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Ships within 48 hours · Estimated delivery Sep 25 - Sep 30
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Description
K&N Performance Air Intake System (57S-4902)The K&N 57S 4902 Performance Airbox replaces the restrictive factory air filter and air box. K&N performance air boxes are designed to dramatically reduce air flow restriction as well as smooth and straighten air flow. This allows your engine to inhale a larger amount of air than the factory air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range. The 57S 4902 Performance Airbox comes with a conical K&N
The K&N 57S-4902 Performance Airbox replaces the restrictive factory air filter and air box. K&N performance air boxes are designed to dramatically reduce air flow restriction as well as smooth and straighten air flow. This allows your engine to inhale a larger amount of air than the factory air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range. The 57S-4902 Performance Airbox comes with a conical K&N high-flow air filter and a fully enclosed injection molded air box with an intake pipe that connects up to the factory air intake hose. The air box has a removable lid for easy access to the filter when cleaning is required. The air filter can be used for up to 100,000 miles before servicing is needed depending on driving conditions. This performance air box is relatively easy to install into the previous air box space with commonly available tools. K&N builds these air box systems to last for the life of your vehicle and they are backed by K&N's Million Mile Limited Warranty. Some K&N 57S Series Performance Airboxes are compliant with the latest TUV emissions and sound regulations. Check the K&N catalog or website for vehicle applications and specific TUV status for each vehicle and air intake.- Guaranteed to increase horsepower
- Designed to improve torque and acceleration
- Replaces entire factory air box and air filter system
- Washable and reusable lifetime air filter
- Easy to install, usually in 90 minutes or less
- Lasts up to 100,000 miles before service is required (depending on driving conditions)
- K&N Million Mile Limited Warranty
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
4.9 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 5
very comfortable, good looking
Size: X-Large, Color: Deep Blue
Perfect for my husband. So comfortable and look like regular jeans like he used to be able to wear. All his life he would only wear Levi shrink to fit, but in last few years they were too stiff and uncomfortable due to injuries and poor health, so has been wearing stretch pants and hating them. I ordered these not expecting them to work, but they fit him perfectly and are so comfortable I ordered him 2 more pair. He is so happy to be wearing blue jeans again. One caution, other styles of this brand do not fit the same as these jeans, I ordered another and have to return them and order 1 or 2 sizes bigger than the jeans
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Reviewed in the United States on January 23, 2026
★★★★★ 3
Sizing issue
Size: 3X-Large, Color: Beau Blue
The Material is nice and stretchy but the sizing is way off I had to get it tailored
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Good quality, stress, jeans I recommend them
Size: Large, Color: Beau Blue
Great fit I never seen jeans at stretch but they are comfortable. I tried to order a 30 for some reason they gave me a 36. It’s a little too big but I guess I’ll watch hot water. The waist will shrink. I’m gonna try to order another pair, but I want them in 34 not 36 and it’s giving me a problem when I try to order 34 pops up 36. I’ll figure it out but other than that nice jeans good quality
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Reviewed in the United States on February 9, 2026
★★★★★ 5
Comfortable Casual Jeans
Size: Medium, Color: Deep Blue
Soft material, perfect stretch without loosing its shape and super comfortable.
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Reviewed in the United States on April 19, 2026
★★★★★ 5
It’s nice and soft and fits well
Color: Slate Blue, Size: X-Large
The shirt is fantastic. It’s nice and soft and keeps me warm.
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Reviewed in the United States on May 16, 2026
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