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- USA
- CAN
Ships within 48 hours · Estimated delivery Oct 11 - Oct 16
For Your Every Summer RSVP, with Code: SUMMER15
Description
K&N Replacement Air Filter (33-3138)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
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!- REUSABLE K&N FILTER SAVES YOU MONEY: A K&N washable, reusable air filter will save you up to $125 vs. purchasing multiple disposable filters (compared to MSRP in USD of corresponding OE filters for 200,000 miles of highway driving)
- CLEAN ONCE EVERY 5 YEARS: Engine air filter only needs cleaning every 75,000 miles under normal highway driving conditions (5 years based on the average miles driven per year of 15,000 miles)
- RUGGED CONSTRUCTION: K&N Air Filters are manufactured with durable, premium materials and state-of-the-art construction methods to last a lifetime
- REDUCES WASTE: Over 200 million disposable air filters and their packaging waste wind up in landfills each year- reusable filters help reduce waste in our landfills
- ENGINEERED POWER: State-of-the-art air filter media is designed to increase horsepower and acceleration as well as improve overall engine performance
- EASY INSTALLATION: K&N Air Filters are pre-oiled and ready to drop into your factory air box- they are one of the easiest and most cost-effective vehicle upgrades for quick performance gains
- 4 LAYERS OF PROTECTION: Multiple layers of premium cotton gauze treated with a specially-designed tacking agent work together to create an intricate mesh of engine filter media that is designed to block and trap harmful contaminants
- ULTIMATE LONGEVITY: No-hassle lifetime limited warranty on stock replacement K&N air filters- limitations apply
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
As advertised
It’s an oil filter - what else can I say but it was as advertised
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Reviewed in the United States on March 15, 2025
★★★★★ 5
Car part
Exact fit
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Reviewed in the United States on January 19, 2026
★★★★★ 5
Perfect Fit for Full Cooling System Overhaul on BMW 330xi
I ordered this Engine Coolant Hose (part #11537545890) for my 2006 BMW 330xi as part of a comprehensive cooling system overhaul. Along with this hose, I had my mechanic replace the thermostat, water pump, radiator, expansion tank, and all other related hoses.
This hose fit exactly as expected—no issues during installation. It’s been three weeks since the job was completed, and everything is performing flawlessly. No leaks, no warning lights, and the engine temperature remains stable under all driving conditions.
Although this is not a genuine OEM part, the quality appears solid and it matched up perfectly with the original in terms of length, shape, and connector alignment. For anyone looking to refresh their aging BMW’s cooling system, this hose is a reliable and cost-effective option. Just be sure to verify the part number for compatibility before purchasing.
Highly recommended if you’re doing preventive maintenance or replacing a failed hose as part of a larger cooling system repair.
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Reviewed in the United States on August 3, 2025
★★★★★ 5
Highly recommend
Perfect fit for my Mercedes C300 V6
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Reviewed in the United States on March 1, 2026
★★★★★ 5
good quality
easy to install, works great , good value
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Reviewed in the United States on December 29, 2025