Eaton GM 8.5in/8.6in Rear Master Install Kit

Eaton GM 8.5in/8.6in 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/8.6in 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 2004 2007 Buick Rainier CXL 2004 2005 Buick Rainier CXL Plus 1999 2000,2002 2008 Cadillac

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Pros: Extremely Durable: Survived an aggressive chewer where tennis balls failed. Dual-Visibility: Features both internal flashing lights and a glow-in-the-dark "chargeable" surface. Perfect Size: Fits comfortably in the mouth of a 40lb medium-sized dog. Same size as a tennis ball. Cons: Battery Life: Unsure how long the internal flashing lights will last (though it has held up well so far).

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Reviewed in the United States on February 8, 2026

Verified Purchase

Andrea S.

Carnegie, US

★★★★★ 5

Great for night time play!

Size: One-Size-for-Most

This ball is great! It is a 2-for-one light up feature so we love the flashing lights and if she drops it in the snow after those lights stop, we can still find it because of the strong glow that gets its charge from the flashing LED lights. Our first one lasted a few years, we lost it on a trip so now back for our second one so we can keep the night time fetch going! She is a golden retriever for size reference. Any bigger of a breed and I would worry it might be too small for her mouth. It’s a bit smaller than a tennis ball. Just don’t make the same mistake I did and let them have it in the house at night, she walked up to my bedside while I was asleep one night and squeezed it to activate it. Those lights are so bright it was a rude awakening!

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Reviewed in the United States on November 11, 2025

Verified Purchase

Katie

Whiting, US

★★★★★ 4

Good option for playing at night

Size: One-Size-for-Most

This ball is a good option if your dog likes to fetch at night. It stays lit for about 20 minutes or so, but that is me only leaving it out of the counter, being "charged" by whatever house lights are on. My dog isn't a big chewer, but it seems as though it would hold up well. I like that it is easy to rinse and clean. It seems to be a good value.

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Reviewed in the United States on January 16, 2026