Eaton GM 8.5in Rear Master Install Kit

Marsoni

M251S

$149.99

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

Eaton GM 8.5in Rear Master Install KitEaton master installation kits make upgrading your differential easier by providing all the components needed to properly install your Eaton differential or replace your ring and pinion, in one box. Premium bearings and components ensure long life and quiet operation. This Part Fits: Year Make Model Submodel 1973 1975 Buick Apollo Base 1975 Buick Apollo SR 1973 1977 Buick Century Base 1975 1977 Buick Century Custom 1976 Buick Century Indianapolis 500

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Arrived on time as promised. I was able to install it easily on my Jeep Cherokee with 3.2L engine. Good instructions and the part seems to be of good quality. Four Stars only as I have just installed it. Filters are passive components, usually can't tell of their long term quality or reliability unless they leak or cause immediate problems. I recommend this part.

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Reviewed in the United States on May 26, 2026

Verified Purchase

Joey Robbins

Lexington, US

★★★★★ 5

Perfect fit

Size: One Size, Style: Select

Been using these for years and always hold up well.

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Reviewed in the United States on March 9, 2026

Verified Purchase

Side Hug

Draper, US

★★★★★ 5

Solid Price for Quality

Size: (Pack of 1)

Awesome filter, my engine told me it loves the fit and ease of installation. It also it very good value for money as they aren’t expensive and you are getting a high value for the money. My engine also told me it’s getting slightly better fuel efficiency as well.

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Reviewed in the United States on February 22, 2026