★★★★★ 5
It fits 09 ram, works great!
Style: CA9401
Works great on my 09 ram
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 28, 2025
K&N Universal Clamp-On Air Filter 3-1/8in FLG / 4-15/16in B / 3-1/2in T / 4-3/8in H
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
K&N Universal Clamp-On Air Filter 3-1/8in FLG / 4-15/16in B / 3-1/2in T / 4-3/8in HK&N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles, radio controlled cars, generators, snowmobiles, tractors, and other applications. Regardless of the angle or offset diameter of the air intake, there is probably a K&N Universal air filter for your equipment. All filters are constructed with ultra strong molded pliable rubber flanges which absorb vibration and allow for secure
Quick Dispatch:
Your K&N Universal Clamp-On Air Filter 3-1/8in FLG / 4-15/16in B / 3-1/2in T / 4-3/8in H orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your K&N Universal Clamp-On Air Filter 3-1/8in FLG / 4-15/16in B / 3-1/2in T / 4-3/8in H ships.
Need Help?
Questions about K&N Universal Clamp-On Air Filter 3-1/8in FLG / 4-15/16in B / 3-1/2in T / 4-3/8in H, sizing, or delivery? We're just an email away.
Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for K&N Universal Clamp-On Air Filter 3-1/8in FLG / 4-15/16in B / 3-1/2in T / 4-3/8in H in your area.
Get Shipping Estimates
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
You may also like
Mishimoto 86-92 Toyota Supra Turbo Aluminum Fan Shroud Kit
128.94
Mishimoto 00-09 Honda S2000 Aluminum Fan Shroud Kit
127.99
Mishimoto 10-16 Toyota Tacoma 4.0L V6 Black Silicone Hose Kit
114.50
Mishimoto 92-97 Audi S4/S6 C4 Turbo Black Silicone Hose Kit
164.97
Mishimoto -8ORB to -8AN Aluminum Fitting - Black
27.75
Mishimoto 95-97 Chevy Camaro / Pontiac Firebird EPDM Replacement Hose Kit
132.53
Mishimoto 98-02 Chevy Camaro / Pontiac Firebird Red Silicone Hose Kit (LS1 (V8) Engines Only)
165.57
4.8 ★★★★★
Based on 1051 reviews
Sort
Product Reviews
★★★★★ 5
Quality filter at a great price.
Style: CA9401
Great filter, very similar to K&N at a way cheaper price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 14, 2026
★★★★★ 3
Fit perfectly, but questionably thin.
Style: CA11053A
This was an exact fit for my 2017 Kia Forte S. My only convern is that it is half the width of the stock filters. Hopefully the different material will make the difference over time. Didn't notice a loss or gain of torque or acceleration after swapping for my old dirty filter.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 15, 2025
★★★★★ 5
Increased MPG!
Style: 33-3131
I don't know if it increases power, but it for sure has an increase of 1-2 MPG. About the same MPG increase as a K&N, but half the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
★★★★★ 4
Time will tell
Style: CA11053A
As another reviewer pointed out, the OEM paper filter is almost 3 times thicker than this one. All things equal, thicker would mean for filtering surface area. So with less filter media surface area, the filter would clog up quicker. However, since this is washable, maybe that's a moot point. I also noticed on my Hyundai Tucson, the rim of this filter must be slighter thicker because I had a tougher time clipping the filter box closed with this one installed. I am keeping my OEM for now, just in case.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 6, 2025
