K/N Select Oil Filters have been specially designed for professional installers. Their high flow design can help to improve engine performance by reducing oil filter restriction while they provide ...
Description: K/N Select Oil Filters have been specially designed for professional installers. Their high flow design can help to improve engine performance by reducing oil filter restriction while they provide outstanding filtration.
Condition: New
Price: $14.65
K&N Oil Filter Spin-On - SO-2001New024844386687
K/N Select Oil Filters have been specially designed for professional installers. Their high flow design can help to improve engine performance by reducing oil filter restriction while they provide ...
Description: K/N Select Oil Filters have been specially designed for professional installers. Their high flow design can help to improve engine performance by reducing oil filter restriction while they provide outstanding filtration.
Condition: New
Price: $14.65
K&N Oil Filter Spin-On - SO-2004New024844386694
K/N Select Oil Filters have been specially designed for professional installers. Their high flow design can help to improve engine performance by reducing oil filter restriction while they provide ...
Description: K/N Select Oil Filters have been specially designed for professional installers. Their high flow design can help to improve engine performance by reducing oil filter restriction while they provide outstanding filtration.
Condition: New
Price: $14.65
K&N Oil Filter Spin-On - SO-2006New024844386700
K/N Select Oil Filters have been specially designed for professional installers. Their high flow design can help to improve engine performance by reducing oil filter restriction while they provide ...
Description: K/N Select Oil Filters have been specially designed for professional installers. Their high flow design can help to improve engine performance by reducing oil filter restriction while they provide outstanding filtration.
Condition: New
Price: $14.65
K&N Oil Filter Spin-On - SO-2009New024844386717
K/N Select Oil Filters have been specially designed for professional installers. Their high flow design can help to improve engine performance by reducing oil filter restriction while they provide ...
Description: K/N Select Oil Filters have been specially designed for professional installers. Their high flow design can help to improve engine performance by reducing oil filter restriction while they provide outstanding filtration.
Condition: New
Price: $14.65
K&N Oil Filter Spin-On - SO-2010New024844386724
K/N Select Oil Filters have been specially designed for professional installers. Their high flow design can help to improve engine performance by reducing oil filter restriction while they provide ...
Description: K/N Select Oil Filters have been specially designed for professional installers. Their high flow design can help to improve engine performance by reducing oil filter restriction while they provide outstanding filtration.
Condition: New
Price: $14.65
K&N Oil Filter Spin-On - SO-3002New024844386755
K/N Select Oil Filters have been specially designed for professional installers. Their high flow design can help to improve engine performance by reducing oil filter restriction while they provide ...
Description: K/N Select Oil Filters have been specially designed for professional installers. Their high flow design can help to improve engine performance by reducing oil filter restriction while they provide outstanding filtration.
Condition: New
Price: $14.65
K&N Oil Filter Spin-On - SO-3003New024844386762
K/N Select Oil Filters have been specially designed for professional installers. Their high flow design can help to improve engine performance by reducing oil filter restriction while they provide ...
Description: K/N Select Oil Filters have been specially designed for professional installers. Their high flow design can help to improve engine performance by reducing oil filter restriction while they provide outstanding filtration.
Condition: New
Price: $14.65
K&N Oil Filter Spin-On - SO-4003New024844386779
K/N Select Oil Filters have been specially designed for professional installers. Their high flow design can help to improve engine performance by reducing oil filter restriction while they provide ...
Description: K/N Select Oil Filters have been specially designed for professional installers. Their high flow design can help to improve engine performance by reducing oil filter restriction while they provide outstanding filtration.
Condition: New
Price: $14.65
K&N Performance Air Intake System - 57-0331-1New024844113467
K/N s 57i induction kits are easy to install economical and come with K/N s No-Hassle Lifetime Limited Warranty. They consist of a large washable/reusable K/N air filter with adapters for connectio...
Description: K/N s 57i induction kits are easy to install economical and come with K/N s No-Hassle Lifetime Limited Warranty. They consist of a large washable/reusable K/N air filter with adapters for connection to the engine s throttle body.
Condition: New
Price: $350.65
K&N Performance Air Intake System - 57-0366New024844088550
K/N s 57i induction kits are easy to install economical and come with K/N s No-Hassle Lifetime Limited Warranty. They consist of a large washable/reusable K/N air filter with adapters for connectio...
Description: K/N s 57i induction kits are easy to install economical and come with K/N s No-Hassle Lifetime Limited Warranty. They consist of a large washable/reusable K/N air filter with adapters for connection to the engine s throttle body.
Condition: New
Price: $350.65
K&N Performance Air Intake System - 57-0432New024844096326
K/N s 57i induction kits are easy to install economical and come with K/N s No-Hassle Lifetime Limited Warranty. They consist of a large washable/reusable K/N air filter with adapters for connectio...
Description: K/N s 57i induction kits are easy to install economical and come with K/N s No-Hassle Lifetime Limited Warranty. They consist of a large washable/reusable K/N air filter with adapters for connection to the engine s throttle body.
Condition: New
Price: $350.65
K&N Performance Air Intake System - 57-0479New024844099471
K/N s 57i induction kits are easy to install economical and come with K/N s No-Hassle Lifetime Limited Warranty. They consist of a large washable/reusable K/N air filter with adapters for connectio...
Description: K/N s 57i induction kits are easy to install economical and come with K/N s No-Hassle Lifetime Limited Warranty. They consist of a large washable/reusable K/N air filter with adapters for connection to the engine s throttle body.
Condition: New
Price: $350.65
K&N Performance Air Intake System - 57-0594New024844108289
K/N s 57i induction kits are easy to install economical and come with K/N s No-Hassle Lifetime Limited Warranty. They consist of a large washable/reusable K/N air filter with adapters for connectio...
Description: K/N s 57i induction kits are easy to install economical and come with K/N s No-Hassle Lifetime Limited Warranty. They consist of a large washable/reusable K/N air filter with adapters for connection to the engine s throttle body.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-0615New024844110244
K/N s 57i induction kits are easy to install economical and come with K/N s No-Hassle Lifetime Limited Warranty. They consist of a large washable/reusable K/N air filter with adapters for connectio...
Description: K/N s 57i induction kits are easy to install economical and come with K/N s No-Hassle Lifetime Limited Warranty. They consist of a large washable/reusable K/N air filter with adapters for connection to the engine s throttle body.
Condition: New
Price: $350.65
K&N Performance Air Intake System - 57-0626New024844111067
K/N s 57i induction kits are easy to install economical and come with K/N s No-Hassle Lifetime Limited Warranty. They consist of a large washable/reusable K/N air filter with adapters for connectio...
Description: K/N s 57i induction kits are easy to install economical and come with K/N s No-Hassle Lifetime Limited Warranty. They consist of a large washable/reusable K/N air filter with adapters for connection to the engine s throttle body.
Condition: New
Price: $350.65
K&N Performance Air Intake System - 57-1003New024844109118
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-1514-1New024844094865
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-1516New024844095909
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-1517-2New024844109965
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $559.99
K&N Performance Air Intake System - 57-1528New024844103826
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-1533New024844104205
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-1535New024844109439
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $466.65
K&N Performance Air Intake System - 57-2525-2New024844095077
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-2529-1New024844095060
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-2530New024844100078
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-2532New024844100566
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-2537New024844103895
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $466.65
K&N Performance Air Intake System - 57-2538New024844103888
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-2539New024844103871
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-2541New024844104434
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-2546-1New024844232229
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-2550New024844109361
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-2551New024844109347
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-2552New024844109545
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-2553New024844109293
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-2555New024844109538
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-2562New024844109620
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-2563New024844109569
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-3021-1New024844088888
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-3023-1New024844088987
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-3030-1New024844095480
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-3031-1New024844095497
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-3033New024844090454
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-3034New024844100153
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-3035New024844100337
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $699.99
K&N Performance Air Intake System - 57-3037New024844103956
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $699.99
K&N Performance Air Intake System - 57-3040New024844109392
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-3046New024844109606
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $559.99
K&N Performance Air Intake System - 57-3048New024844109637
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-3513New024844094803
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-6005New024844100658
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-6010New024844103994
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-6011New024844109521
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-9016-1New024844094780
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57-9020New024844104021
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 57A-6015New024844189967
K/N Apollo cold air induction systems incorporate a washable/reusable K/N high-flow air filter within a protective shell. They come with custom mounting hardware to fit specific vehicle applications.
Description: K/N Apollo cold air induction systems incorporate a washable/reusable K/N high-flow air filter within a protective shell. They come with custom mounting hardware to fit specific vehicle applications.
Condition: New
Price: $399.99
K&N Performance Air Intake System - 57S-9501New024844257178
K/N s easy-to-install performance air box replaces the restrictive factory air filter and air intake housing delivering a guaranteed power gain.
Description: K/N s easy-to-install performance air box replaces the restrictive factory air filter and air intake housing delivering a guaranteed power gain.
Condition: New
Price: $490.65
K&N Performance Air Intake System - 63-1050New024844097989
K/N s easy to install air intake systems replace the restrictive factory air filter and air intake housing allowing for virtually unrestricted air flow. K/N air intakes come with K/N s famous milli...
Description: K/N s easy to install air intake systems replace the restrictive factory air filter and air intake housing allowing for virtually unrestricted air flow. K/N air intakes come with K/N s famous million mile limited warranty.
Condition: New
Price: $630.65
K&N Performance Air Intake System - 63-9022New024844182982
K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.
Description: K/N s roto-molded cold air intake systems are guaranteed to provide an increase in horsepower and torque and are protected by the K/N No-Hassle Lifetime Limited Warranty.