Solid Contoured Backup Ring 10.500" x 10.875" x 0.076" - Nitrile

Marsoni

M251S

$25.38

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

Solid Contoured Backup Ring 10.500" x 10.875" x 0.076" - NitrileProduct Details : Solid Contoured Backup Ring 10. 500" x 10. 875" x 0. 076" Nitrile Part No: 8 378 N90 Product Category: O Rings Product Type: Solid Contoured Backup Ring Series: 8 XXX Dash No.: 378 Material(s): Nitrile Material Code: NBR Durometer: 90 Temperature Range: 40F to +250F ( 40C to +121C) System Of Measurement: Inch Dimensions: 10. 500" x 10. 875" x 0. 076" Nominal I. D. (d) : 10. 500" Nominal O. D. (D) : 10. 875" Nominal Width (W): 0. 187"

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We offer a 30-day return/exchange service after receiving.
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This has to be the best oil I ever used. I noticed the difference as soon as I put the oil in and started the engine.! I will continue to use this oil for as long as I own, the vehicle and any future cars I may own or drive! I read 75% of the reviews before purchasing this oil . The only thing I’ve noticed. Anyone who gave it below a five star was because they received used motor oil.. in my opinion I think it was returned after somebody filled it up with their used motor oil and returning it for their money back somehow Amazon put it back on the shelf for resale. So take it for what it’s worth but it’s really great oil.

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Reviewed in the United States on March 24, 2026

Verified Purchase

miguel vazquez

Grantham, US

★★★★★ 5

Great oil

Won’t use another brand now that I’ve used these guys. Phenomenal brand, noticeable difference in the engine.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on April 2, 2026