Solid Backup Ring 12.000" x 12.500" x 0.085" - Polyurethane

Marsoni

M251S

$25.14

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

Solid Backup Ring 12.000" x 12.500" x 0.085" - PolyurethaneProduct Details : Solid Backup Ring 12. 000" x 12. 500" x 0. 085" Polyurethane Part No: 8 453 U Product Category: O Rings Product Type: Solid Backup Ring Series: XXX U Dash No.: 453 Material(s): Polyurethane Material Code: AU Durometer: 95A Temperature Range: 60F to +250F ( 51C to +121C) Surface Speed: < 1. 6 ft s (0. 5 m s) System Of Measurement: Inch Dimensions: 12. 000" x 12. 500" x 0. 085" Nominal I. D.: 12. 000" Nominal O. D.: 12. 500" Nominal

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Good product, not much to say. The product arrived quickly, looks to be of high quality construction, fit perfectly and took me only a couple of minutes to install. I love it when a product is no frills and delivers as advertised. I've used various filters from K&N before and have always had very good success with them so I will be buying more of these for sure when the time comes.

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Reviewed in the United States on November 9, 2025

Verified Purchase

john A.

Chelsea, US

★★★★★ 5

Better than most.

Size: (Pack of 1)

Looks good, perfect fit.

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Reviewed in the United States on May 25, 2026

Verified Purchase

Willy Bill

Carnegie, US

★★★★★ 5

Great Filter

Size: (Pack of 1)

This fits fine. Just wish it was a little easier to change.

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Reviewed in the United States on April 26, 2026

Verified Purchase

Omaha, US

★★★★★ 5

More power, slightly lower (8%) MPG.

Size: (Pack of 1)

Installed on a 2.0 liter Subaru Impreza. I drive up/down the I5 in california 3-4 times a year. For those that don't know there is about a 200 mile flat stretch where everyone runs at 75-85mph. With various filters (FRAM, BOSCH, Subaru OEM), I would consistently get 29.8 mpg. Once I installed the K&N, I could feel the car pulling with a bit more power, but I noticed that I was getting about 27.5 mpg. Totally worth it as the impreza is a little under powered and I don't drive many miles (6k/year) but if you are putting a lot of miles on your car, you may want to have more mpg.

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Reviewed in the United States on May 24, 2026

Verified Purchase

GregUPerkio

Los Angeles, US

★★★★★ 5

fits my 2013 chevy suburban 5.3 and appears to be high quality

Size: (Pack of 1)

fits my 2013 suburban perfectly. looks to be a well constructed unit.

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Reviewed in the United States on March 29, 2026