1988 BMW K&N Parts

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325 325i 325iX 325is 528e 535i 535is 635CSi 735i 735iL 750iL M3

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1988 BMW M3 Engine Oil Filter K&N

Oil Filter
H-3.75 in.; OD-3 in.; 3/4 in. - 16 Thread; psi Relief Valve 11-14
K/N Wrench-Off oil filters are engineered to help ensure high flow rates and exceptional protection from contaminants. Each filter comes with a hex nut welded to the top of the canister; allowing for easy removal with a standard wrench.
Performance Gold Oil Filter
Product Attributes:
- Thread Size: .750 In. - 16
- Removal Nut Size: 1.000 In.
- WARNING CA Proposition 65: No
- Bypass Valve: Yes
- Style: Canister
- Item Weight: 0.800 Lbs. (0.4 Kg)
- Product Box Height: 4.000 In. (102mm)
- Filter Material: High Flow Premium Media
- Gasket Material: Viton Rubber
- Product Box Width: 3.190 In. (81mm)
- Package Material: Paperboard
- Product Box Length: 3.190 In. (81mm)
- PSI Relief Valve: 11-14
- Outside Diameter: 3.000 In. (76mm)
- Removal Nut: Yes
- Item Height: 3.750 In. (95mm)
- Package Type: Box
- Anti-Drain Back Valve: Yes
Features:
- OE Replacement Oil Filter
- 1 in. Exposed Nut Designed For Easy Oil Filter Removal
- Heavy Duty Construction For Extreme Conditions
- Anti-Drain Back Valve - Where Applicable - Eliminates Dry Starts
K&N premium oil filters are meticulously engineered to offer outstanding filtration and engine protection. Designed to operate with all synthetic, conventional, and blended motor oils, K&N's pleated synthetic-blend filtration media helps to shield your engine from contaminants and ensure a consistent flow of oil. The heavy-duty canister is engineered to be exceptionally durable, and a one-inch welded hex nut can be used for quick and easy filter removal. Each filter is specifically designed to withstand the service intervals recommended by vehicle manufacturers, and is protected by the K&N 1-Year Limited Warranty.

This Part Fits the Following OEM/Substitute Numbers:

04E115561, 04E115561H, 104044, 11421258039, 1164626, 11715272, 1174416, 1183358, 119139, 1205002, 1220406, 1220645, 130144, 132023, 140517050, 1520813210, 1520813212, 1520855400...VIEW MORE

Additional Fitment Information:

Vehicle
1988 - BMW M3

107 In Stock

$23.89 CAD

$28.67 CAD

Brand	K&N
Part #	K33HP-1002
Condition	New
Warehouse	B

1988 BMW 325is Engine Oil Filter 6 Cyl 2.5L K&N

Oil Filter
H-5.063 in.; OD-3 in.; 3/4 In. - 16 Thread; psi Relief Valve 11-14
K/N Wrench-Off oil filters are engineered to help ensure high flow rates and exceptional protection from contaminants. Each filter comes with a hex nut welded to the top of the canister; allowing for easy removal with a standard wrench.
Performance Gold Oil Filter
Product Attributes:
- Thread Size: .750 In. - 16
- Removal Nut Size: 1.000 In.
- WARNING CA Proposition 65: No
- Bypass Valve: Yes
- Style: Canister
- Item Weight: 1.000 Lbs. (0.4 Kg)
- Product Box Height: 5.630 In. (143mm)
- Filter Material: High Flow Premium Media
- Gasket Material: Viton Rubber
- Product Box Width: 3.250 In. (83mm)
- Package Material: Paperboard
- Product Box Length: 3.250 In. (83mm)
- PSI Relief Valve: 11-14
- Outside Diameter: 3.000 In. (76mm)
- Removal Nut: Yes
- Item Height: 5.063 In. (129mm)
- Package Type: Box
- Anti-Drain Back Valve: Yes
Features:
- OE Replacement Oil Filter
- 1 in. Exposed Nut Designed For Easy Oil Filter Removal
- Heavy Duty Construction For Extreme Conditions
- Anti-Drain Back Valve - Where Applicable - Eliminates Dry Starts
K&N premium oil filters are meticulously engineered to offer outstanding filtration and engine protection. Designed to operate with all synthetic, conventional, and blended motor oils, K&N's pleated synthetic-blend filtration media helps to shield your engine from contaminants and ensure a consistent flow of oil. The heavy-duty canister is engineered to be exceptionally durable, and a one-inch welded hex nut can be used for quick and easy filter removal. Each filter is specifically designed to withstand the service intervals recommended by vehicle manufacturers, and is protected by the K&N 1-Year Limited Warranty.

This Part Fits the Following OEM/Substitute Numbers:

1113566, 1220323, 1220445, 1220469, 1220800, 122A323, 122B323, 276217536, 276513, 277233, 4209146, 42532250, 47352, 480704, 507107, 507631, 51516, 51762...VIEW MORE

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1988 - BMW 325is	L	2494	6 Cyl 2.5L	152

13 In Stock

$23.89 CAD

$28.67 CAD

Brand	K&N
Part #	K33HP-2009
Condition	New
Warehouse	B

1988 BMW 325i Engine Oil Filter 6 Cyl 2.5L K&N

Oil Filter
H-5.063 in.; OD-3 in.; 3/4 In. - 16 Thread; psi Relief Valve 11-17 Pro-Series Oil Filter w/o Wrench Off Nut
K/N Performance Silver 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.
High Flow Oil Filter
Product Attributes:
- Thread Size: .750 In. - 16
- WARNING CA Proposition 65: No
- Bypass Valve: Yes
- Style: Canister
- Item Weight: 0.900 Lbs. (0.4 Kg)
- Product Box Height: 4.700 In. (119mm)
- Filter Material: High Flow Premium Media
- Gasket Material: Nitrile Rubber
- Product Box Width: 3.200 In. (81 Mm)
- Package Material: Paperboard
- Product Box Length: 3.300 In. (84mm)
- PSI Relief Valve: 11-17
- Outside Diameter: 3.000 In. (76mm)
- Removal Nut: No
- Item Height: 5.063 In. (129mm)
- Package Type: Box
- Anti-Drain Back Valve: Yes
Features:
- Designed To Improve Performance
- Designed For Synthetic/Conventional/Blended Oils
- Premium Filtration Media For Increased Capacity
- Helps Improve Engine Performance by Reducing Oil Restriction
K&N Performance Silver Oil Filters have been specially designed for professional installers and service providers. Their high flow design can help to improve engine performance by reducing oil filter restriction. Our Performance Silver Oil Filters have a fluted canister shape so they can be removed with a traditional oil filter wrench commonly available to commercial installers. These Performance Silver oil filters provide outstanding filtration and engine protection throughout their service life. They are engineered to handle all grades of synthetic, conventional and blended motor oils. The pleated media provides high capacity making them suitable for extended oil change intervals when used in accordance with the vehicle and motor oil manufacturers recommendation. K&N Performance Silver Oil Filters are available for canister and cartridge type oil filter applications.

This Part Fits the Following OEM/Substitute Numbers:

06A115561B, 51088, 51342, FL227, FL401, HP2005, L20064, L20252, L24466, L27190, L27252, L30042, M1205, PF2124, PF5561A, PF60, PH2825, PH2870A...VIEW MORE

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1988 - BMW 325i	L	2494	6 Cyl 2.5L	152

9 In Stock

$14.25 CAD

$17.10 CAD

Brand	K&N
Part #	K33PS-2005
Condition	New
Warehouse	B

1988 BMW 325i Engine Oil Filter 6 Cyl 2.5L K&N

Oil Filter
H-5.063 in.; OD-3.0 in.; 3/4 in. - 16 Thread; psi Relief Valve 11-17 Premium Oil Filter w/Wrench Off Nut
K/N Wrench-Off oil filters are engineered to help ensure high flow rates and exceptional protection from contaminants. Each filter comes with a hex nut welded to the top of the canister; allowing for easy removal with a standard wrench.
Performance Gold Oil Filter
Product Attributes:
- Thread Size: .750 In. - 16
- Removal Nut Size: 1.000 In.
- WARNING CA Proposition 65: No
- Bypass Valve: Yes
- Style: Canister
- Item Weight: 1.000 Lbs. (0.4 Kg)
- Product Box Height: 5.750 In. (146mm)
- Filter Material: High Flow Premium Media
- Gasket Material: Viton Rubber
- Product Box Width: 3.190 In. (81mm)
- Package Material: Paperboard
- Product Box Length: 3.190 In. (81mm)
- PSI Relief Valve: 11-17
- Outside Diameter: 3.000 In. (76mm)
- Removal Nut: Yes
- Item Height: 5.063 In. (129mm)
- Package Type: Box
- Anti-Drain Back Valve: Yes
Features:
- OE Replacement Oil Filter
- 1 in. Exposed Nut Designed For Easy Oil Filter Removal
- Heavy Duty Construction For Extreme Conditions
- Anti-Drain Back Valve - Where Applicable - Eliminates Dry Starts
K&N premium oil filters are meticulously engineered to offer outstanding filtration and engine protection. Designed to operate with all synthetic, conventional, and blended motor oils, K&N's pleated synthetic-blend filtration media helps to shield your engine from contaminants and ensure a consistent flow of oil. The heavy-duty canister is engineered to be exceptionally durable, and a one-inch welded hex nut can be used for quick and easy filter removal. Each filter is specifically designed to withstand the service intervals recommended by vehicle manufacturers, and is protected by the K&N 1-Year Limited Warranty.

This Part Fits the Following OEM/Substitute Numbers:

056115561B, 056115561G, 06A115561B, 1062099C1, 11421266773, 1164626, 1172346, 1174417, 1220764, 140516010, 1520813201, 152099J1800, 15209J1800, 1521332090, 1521332091, 1526187, 1526188, 1560033010...VIEW MORE

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1988 - BMW 325i	L	2494	6 Cyl 2.5L	152

14 In Stock

$23.89 CAD

$28.67 CAD

Brand	K&N
Part #	K33HP-2005
Condition	New
Warehouse	B

1988 BMW 535i Air Filter K&N

High Performance

Additional Fitment Information:

Vehicle
1988 - BMW 535i

Brand	K&N
Part #	KN1615777
Condition	New
Warehouse	A

1988 BMW 735iL Air Filter K&N

Replacement Air Filter
Panel; H-1.125 in.; L-14.875 in.; W-5.813 in.
K/N s replacement High-Flow Air Filters are designed to increase horsepower while providing exceptional engine protection; and are covered by K/N s No-Hassle Lifetime Limited Warranty.
Air Filter
Product Attributes:
- Oil Included: Filter Is Pre-oiled
- WARNING CA Proposition 65: Yes
- Width: 5.813 In.
- Item Weight: 1.200 Lbs. (0.6 Kg)
- Machine Washable: Yes
- Product Box Height: 17.190 In. (437mm)
- Filter Material: Cotton Gauze
- Inside Diameter: Oem
- Product Box Width: 1.750 In. (44 Mm)
- Product Box Length: 8.310 In. (211mm)
- Outside Diameter: Oem
- Item Height: 1.125 In. (29mm)
- Prop 65 (C, R or CR): Cr
- Package Content: 1
- Top Style: Open
- Pre-Screened: No
- Automotive Item Grade: High Performance
- Inner Wire: No
- Outside Width: 5.813 In. (148mm)
- Package Contents: 1 Air Filter
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
- Flange Angle: 0 Degree
- Overall Length: N/a
- Package Quantity: 1
- Shape: Panel
- Package Material: Paperboard
- Frame Design: Flexible
- Filter Re-Oiling Amount: 1.35 Oz (40 Ml)
- Prop 65 Warning Label: Https://www.knfilters.com/images/l/prop65.jpg
- Cap Outside Diameter: N/a
- Filter Style: Dry
- Outside Length: 14.875 In. (378mm)
- Package Type: Box
Features:
- Designed To Boost Horsepower And Acceleration
- Washable And Reusable
- High Air Flow With Exceptional Filtration
- Lasts Up To 50000 Miles Before Cleaning
- Works With Original Equip. Mfg. Vehicle Electronics
- Will Not Void Vehicle Warranty
- Million Mile Limited Warranty
K&N washable, reusable High-Flow Air Filters feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's No-Hassle Lifetime Limited Warranty. K&N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!

This Part Fits the Following OEM/Substitute Numbers:

13721707021, 46208, 6208, 88208, A1247C, A24677, A495, AF230, AF974, C39161, CA6559, LX106, TA24677

Additional Fitment Information:

Vehicle
1988 - BMW 735iL

Brand	K&N
Part #	33-2573
Condition	New
Warehouse	C

1988 BMW 635CSi Air Filter K&N

Replacement Air Filter
Panel; H-1.313 in.; L-7 1/16 in.; W-12.5 in.
K/N s replacement High-Flow Air Filters are designed to increase horsepower while providing exceptional engine protection; and are covered by K/N s No-Hassle Lifetime Limited Warranty.
Air Filter
Product Attributes:
- Oil Included: Filter Is Pre-oiled
- WARNING CA Proposition 65: Yes
- Width: 12.500 In.
- Item Weight: 1.800 Lbs. (0.8 Kg)
- Machine Washable: Yes
- Product Box Height: 13.560 In. (345mm)
- Filter Material: Cotton Gauze
- Inside Diameter: Oem
- Product Box Width: 1.750 In. (44 Mm)
- Product Box Length: 7.720 In. (196mm)
- Outside Diameter: Oem
- Item Height: 1.313 In. (33mm)
- Prop 65 (C, R or CR): Cr
- Package Content: 1
- Top Style: Open
- Pre-Screened: No
- Automotive Item Grade: High Performance
- Inner Wire: No
- Outside Width: 7.063 In. (179mm)
- Package Contents: 1 Air Filter
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
- Flange Angle: 0 Degree
- Overall Length: N/a
- Package Quantity: 1
- Shape: Panel
- Package Material: Paperboard
- Frame Design: Flexible
- Filter Re-Oiling Amount: 1.59 Oz (47 Ml)
- Prop 65 Warning Label: Https://www.knfilters.com/images/l/prop65.jpg
- Cap Outside Diameter: N/a
- Filter Style: Dry
- Outside Length: 12.500 In. (318mm)
- Package Type: Box
Features:
- Designed To Boost Horsepower And Acceleration
- Washable And Reusable
- High Air Flow With Exceptional Filtration
- Lasts Up To 50000 Miles Before Cleaning
- Works With Original Equip. Mfg. Vehicle Electronics
- Will Not Void Vehicle Warranty
- Million Mile Limited Warranty
K&N washable, reusable High-Flow Air Filters feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's No-Hassle Lifetime Limited Warranty. K&N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!

This Part Fits the Following OEM/Substitute Numbers:

0420729, 13721271254, 46135, 6135, 73277, 88135, A23087, A477, A972C, AF254, AF865, C3394, CA4521, FA1082, PA3087, RAF172, SA4521

Additional Fitment Information:

Vehicle
1988 - BMW 635CSi

Brand	K&N
Part #	33-2005
Condition	New
Warehouse	C

1988 BMW 325iX Air Filter K&N

Replacement Air Filter
Panel; H-1.063 in.; L-10 in.; W-5.75 in.
K/N s replacement High-Flow Air Filters are designed to increase horsepower while providing exceptional engine protection; and are covered by K/N s No-Hassle Lifetime Limited Warranty.
Air Filter
Product Attributes:
- Oil Included: Filter Is Pre-oiled
- WARNING CA Proposition 65: Yes
- Width: 5.750 In.
- Item Weight: 0.900 Lbs. (0.4 Kg)
- Machine Washable: Yes
- Product Box Height: 13.560 In. (345mm)
- Filter Material: Cotton Gauze
- Inside Diameter: Oem
- Product Box Width: 1.750 In. (44 Mm)
- Product Box Length: 7.720 In. (196mm)
- Outside Diameter: Oem
- Item Height: 1.063 In. (27mm)
- Prop 65 (C, R or CR): Cr
- Package Content: 1
- Top Style: Open
- Pre-Screened: No
- Automotive Item Grade: High Performance
- Inner Wire: No
- Outside Width: 5.750 In. (146mm)
- Package Contents: 1 Air Filter
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
- Flange Angle: 0 Degree
- Overall Length: N/a
- Package Quantity: 1
- Shape: Panel
- Package Material: Paperboard
- Frame Design: Flexible
- Filter Re-Oiling Amount: 0.9 Oz (27 Ml)
- Prop 65 Warning Label: Https://www.knfilters.com/images/l/prop65.jpg
- Cap Outside Diameter: N/a
- Filter Style: Dry
- Outside Length: 10.000 In. (254mm)
- Package Type: Box
Features:
- Designed To Boost Horsepower And Acceleration
- Washable And Reusable
- High Air Flow With Exceptional Filtration
- Lasts Up To 50000 Miles Before Cleaning
- Works With Original Equip. Mfg. Vehicle Electronics
- Will Not Void Vehicle Warranty
- Million Mile Limited Warranty
K&N washable, reusable High-Flow Air Filters feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's No-Hassle Lifetime Limited Warranty. K&N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!

This Part Fits the Following OEM/Substitute Numbers:

11701, 13721707050, 13721715881, 46221, 6221, 88221, A1160C, A43558, A478, AF355, AF3558, AF931, C26110, C261101, CA4576, FA1083, FB11701, PA3558...VIEW MORE

Additional Fitment Information:

Vehicle
1988 - BMW 325iX

Brand	K&N
Part #	33-2059
Condition	New
Warehouse	C

1988 BMW 325iX Air Intake Kit K&N

Performance Air Intake System
Includes Red Air Filter/Tubing/Adaptors/Hardware;Not Legal For Sale Or Use In California
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.
57i Series Induction Kit
Product Attributes:
- Oil Included: Filter Is Pre-oiled
- Air Filter Height: 3.938 In. (100mm)
- Clamp Style: Regular
- Coupler Color: Not Applicable
- Mounting Hardware Included: Yes
- WARNING CA Proposition 65: Yes
- California Restricted: Not Legal For Sale Or Use In California
- TUV Approved (Europe): No
- Intake Pipe Inlet Shape: Round
- Replacement Filter: Ru-5128
- Item Weight: 2.100 Lbs. (0.9 Kg)
- Product Box Height: 7.000 In. (178mm)
- Filter Material: Cotton Gauze
- Air Filter Outlet Shape: Round
- Product Box Width: 7.000 In. (178mm)
- Air Filter Outlet Length: 2.750 In. (70mm)
- Product Box Length: 7.000 In. (178mm)
- Clamp Quantity: 1
- Air Filter Large End Diameter: 5.031 In. (128mm)
- Intake Pipe Color: Black
- Clamp Color: Natural
- Clamp Material: Steel
- Mass Air Flow Sensor Included: Mass Air Flow Sensor Adapter Included When Required
- Prop 65 (C, R or CR): Cr
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
- Intake Pipe Material: Flex Hose
- Air Filter Outlet Width: 2.750 In. (70mm)
- Intake Pipe Inlet Length: 2.705 In. (70mm)
- Air Filter Element Washable: Yes
- Couplers Included: No
- Package Material: Paperboard
- Intake Pipe Inlet Width: 2.750 In. (70mm)
- Filter Color: Red
- Prop 65 Warning Label: Https://www.knfilters.com/images/l/prop65.jpg
- Package Type: Box
- Air Box Included: No
- Street Legal: No
Features:
- Guaranteed To Increase Horsepower
- Designed To Improve Throttle Response And Engine Sound
- Replaces The Entire Factory Air Intake System
- Washable And Reusable Lifetime Air Filter
- Lasts Up To 100 000 Miles Before Service Required
- Easy To Install - Usually in 90 Minutes or Less
- K&N Million Mile Limited Warranty
K&N 57i Series induction kits are specifically designed for each different vehicle and will free your car from the size restriction that comes with the factory air box. These economical kits can take a variety of different forms based on vehicle characteristics and available space under the hood. Each kit is designed to provide power throughout the RPM range. The extra surface area of these open-air air filters provides even more airflow at lower restriction than a K&N O/E replacement filter which is limited to the size of the factory air box. The larger air filter also captures and holds more dirt increasing its service life before a cleaning is required (up to 100,000 miles). The filter is either directly attached to the engine carburetor or throttle body or indirectly through a tube assembly running from the filter to the engine. All adapters are made from high quality materials such as steel, aluminum, silicon or reinforced nylon to ensure long life. 57i Series Intakes are not legal for use in California and other US States adopting California emission standards.

Additional Fitment Information:

Vehicle
1988 - BMW 325iX

Brand	K&N
Part #	57-0070
Condition	New
Warehouse	C

1988 BMW 750iL Air Filter K&N

Replacement Air Filter
Panel; H-1.063 in.; L-10 in.; W-5.75 in.
K/N s replacement High-Flow Air Filters are designed to increase horsepower while providing exceptional engine protection; and are covered by K/N s No-Hassle Lifetime Limited Warranty.
Air Filter
Product Attributes:
- Oil Included: Filter Is Pre-oiled
- WARNING CA Proposition 65: Yes
- Width: 5.750 In.
- Item Weight: 0.900 Lbs. (0.4 Kg)
- Machine Washable: Yes
- Product Box Height: 13.560 In. (345mm)
- Filter Material: Cotton Gauze
- Inside Diameter: Oem
- Product Box Width: 1.750 In. (44 Mm)
- Product Box Length: 7.720 In. (196mm)
- Outside Diameter: Oem
- Item Height: 1.063 In. (27mm)
- Prop 65 (C, R or CR): Cr
- Package Content: 1
- Top Style: Open
- Pre-Screened: No
- Automotive Item Grade: High Performance
- Inner Wire: No
- Outside Width: 5.750 In. (146mm)
- Package Contents: 1 Air Filter
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
- Flange Angle: 0 Degree
- Overall Length: N/a
- Package Quantity: 1
- Shape: Panel
- Package Material: Paperboard
- Frame Design: Flexible
- Filter Re-Oiling Amount: 0.9 Oz (27 Ml)
- Prop 65 Warning Label: Https://www.knfilters.com/images/l/prop65.jpg
- Cap Outside Diameter: N/a
- Filter Style: Dry
- Outside Length: 10.000 In. (254mm)
- Package Type: Box
Features:
- Designed To Boost Horsepower And Acceleration
- Washable And Reusable
- High Air Flow With Exceptional Filtration
- Lasts Up To 50000 Miles Before Cleaning
- Works With Original Equip. Mfg. Vehicle Electronics
- Will Not Void Vehicle Warranty
- Million Mile Limited Warranty
K&N washable, reusable High-Flow Air Filters feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's No-Hassle Lifetime Limited Warranty. K&N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!