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Yukon Gear

GM Chevy 8.5" Chevy 10-Bolt Rearend Posi - 30 Spline, Gear, Bearing Kit Package - 3.73 Ratio

  • Based on 99 reviews
Condition: New
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$525.00 Why this price?
Save $373.89 was $898.89

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To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: Only 4 left in stock, order soon!
Fulfilled by Quick Performance Racing
Arrives Monday, May 11
Order within 5 hours and 46 minutes
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Features

  • BRAND NEW Chevy 8.5" Yukon Dura-Grip (Clutch) Posi Unit (30 Spline)
  • BRAND NEW Chevy 8.5" Ring & Pinion (3.73 Ratio)
  • BRAND NEW Chevy 8.5" Master Bearing/Installation Kit

Description

Everything that you need to Upgrade or Re-Build your Chevy 8.5" 10-Bolt - 30 Spline Application

Manufacturer: ‎Yukon, Richmond, KOYO


Brand: ‎Yukon Gear


Manufacturer Part Number: ‎YDGGM8.5-3-30-1, GM85373, ZK GM8.5-HD


Date First Available: May 22, 2013


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, May 11

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Great kit
Great quality I’ve order multiple kits and always been satisfied
Reviewed in the United States on September 16, 2025 by lane
    • I've used Quick performance products with no problems.
I have this same setup on my 72 Cutlass with a 455, 84 C10 with 406 SBC, this time on 89 GMC that is ls powered.
Reviewed in the United States on February 10, 2026 by William Gore
    • Great gear/diff/bearing package!
Great price for what you get. Yukon diff is tough and reliable, Richmond gears are good quality and run quiet (when installed correctly) and the bearing kit contains quality components. I’d buy again in a heartbeat. For the do-it-yourself mechanic. No gears and/or bearings run quiet and smooth when installed incorrectly...don’t hammer on bearings (False brinelling) and make sure the gears are set up properly! ... show more
Reviewed in the United States on June 19, 2020 by DJ
    • 99-06 truck guys beware!
First off, I would like to say this is a nice kit, however if your a 99-06 gm guy the bearing kit is going to be incorrect. The correct bearing kit is a ra-321-C or you can get away with just changing the carrier bearings to the bigger OD set36 (3.062 OD) the kit comes with a 2.891OD. Been chasing this problem for my mechanic for the last couple of days, just want to make sure that whomever else purchases this kit gets the correct information. ... show more
Reviewed in the United States on March 22, 2023 by Derrick M
    • Wrong bearings for 99-06 truck
This kit has the wrong bearings for a 99-06 truck. I didn't notice until assembly.
Reviewed in the United States on February 4, 2026 by Erik
    • Good with problems
Good for the money but the bearing to came with the kit was wrong so I had to take them to the parts store and get new ones and nobody told you in the instructions that you have to use dummy bearings to set your pinion dip and the numbers on the opinion you cannot read them So I found some on YouTube and just went with those numbers and I got it within a 1000s ... show more
Reviewed in the United States on March 7, 2022 by Jacob Campbell
    • Bearing do not fit the indicated application
Tje bearings did not fit and the gear set has a noticeable whine above 30mph. Update to my original review, since then the noise had gotten quiter. Fast forward to last week, vehicle developed a popping noise in the differential, I removed the cover and found a broken tooth in the housing. Contacted yukon via Amazon, Erin had tech dept contact via phone. Described the issue at hand and informed me that it would be covered under warranty. Super super nice people to deal with ... show more
Reviewed in the United States on August 30, 2022 by Tatt2oed
    • The spline works great
I ordered the wrong possi spline I paid to have it shipped back and was charged again for having the right one shipped back after I had already paid over $500 for the first one I mistakenly ordered it should have been some sort of return label but nope it wasn't but the spline works great
Reviewed in the United States on May 7, 2024 by ding dong

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