K&N Custom Air Filter 7in OD X 5 1/2in ID x 2in H

K&N Custom Air Filter 7in OD X 5 1/2in ID x 2in H

Marsoni

M251S

$68.99

Get it in 3 business days with 1 day shipping. Friday, May 29

K&N Custom Air Filter 7in OD X 5 1/2in ID x 2in HK&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 10 Year Million Mile Limited Warranty. K&N drop in replacement filters are designed to install easily into your

Easy Shipping

Quick Dispatch:

Your K&N Custom Air Filter 7in OD X 5 1/2in ID x 2in 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 Custom Air Filter 7in OD X 5 1/2in ID x 2in H ships.

Need Help?
Questions about K&N Custom Air Filter 7in OD X 5 1/2in ID x 2in 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 Custom Air Filter 7in OD X 5 1/2in ID x 2in H in your area.

Get Shipping Estimates

Country Zip/Postal Code

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

When I received it, it was so small that I thought it was a toy, or maybe for some 4cyl engine. It is significantly smaller than the original one. When I looked closer, the mount holes did line up, so I tried it. I did have to get shorter mount bolts. To my surprise, it works great! I don't know what the longevity will be, but it made it through a busy august! Considering the price and how small it is, I might just buy a second one to keep on board. Just in case.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on September 14, 2025

Verified Purchase

Bob Valentine

New York, US

★★★★★ 1

Warning!!!

I was so impressed after install!! Fired right up faster that it ever has in the past, had the boat out about 8 times and CACK!!! They say they will stand behind the product and replace it, but do I risk another day ruined on the river? Btw, I have a Volvo penta 5.0 21.5' Larson I/O

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on September 28, 2025

Verified Purchase

Maris I.

New York, US

★★★★★ 5

Perfect fit and functioning. Excellent support

The starter fit perfectly, in my Mercruiser 4.3 from 2004, although it was awkward to replace on my engine due to space constraints. I had a few questions for the supplier and quickly received very descriptive answers. Now the starter works perfect in my boat. In all a very good choice which I really can recommend others.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on June 27, 2024

Verified Purchase

A. WEAVER

Whiting, US

★★★★★ 5

New starter

Part came promptly and was a direct match to the original starter. I did a bench test prior to install and had no issues.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on July 16, 2025

Verified Purchase

Roy W.