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AAM 74040887 Differential Spider & Pinion Gear Kit GM 8.6
American Axle & Manufacturing

AAM 74040887 Differential Spider & Pinion Gear Kit GM 8.6"

$127.55 In Stock Sold out
SKU: 74040887
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  • Description
  • Fitment
  • Warranty and Refund
  • Reviews

Keep your GM truck or SUV's rear differential running smoothly with the American Axle & Manufacturing 74040887 Spider and Pinion Gear Kit. Engineered specifically for the GM 8.6-inch rear axle found in a wide range of 2009-2018 Cadillac, Chevrolet, GMC, and Hummer trucks and SUVs, this kit is built to match the original axle's ring gear diameter and cover bolt configuration. Sold as a new, complete kit with one required per application, it's designed to simplify differential service by supplying the gear components needed for a proper rebuild. Whether you're restoring towing capability, addressing worn internal gears, or performing routine differential maintenance on your Silverado, Suburban, Yukon XL, or Escalade, this AAM kit offers a straightforward path to getting your axle back to reliable service.

Features

  • Matches GM 8.6-inch axle ring gear diameter for correct differential fitment
  • Compatible with 10-bolt differential covers for straightforward installation
  • Complete kit supplies spider and pinion gears needed for one differential rebuild
  • New-condition components sourced from American Axle & Manufacturing, the OE axle maker
  • Covers a broad range of 2009-2018 GM trucks and SUVs

Application Summary

2009 Chevrolet Avalanche 5.3L 5328CC 325CID V8 OHV 16 Valve Naturally Aspirated GAS
2009 Chevrolet Express 1500 5.3L 5328CC 325CID V8 OHV 16 Valve Naturally Aspirated GAS
2009 Chevrolet Silverado 1500 4.8L -CC 294CID V8 OHV 16 Valve Naturally Aspirated GAS
2009 Chevrolet Suburban 1500 5.3L 5328CC 325CID V8 OHV 16 Valve Naturally Aspirated GAS
2009 Chevrolet Suburban 2500 6.0L 5967CC 364CID V8 OHV 16 Valve Naturally Aspirated GAS
2009 Chevrolet Trailblazer 4.2L -CC 256CID L6 DOHC 24 Valve Naturally Aspirated GAS
2009 GMC Envoy 4.2L -CC 256CID L6 DOHC 24 Valve Naturally Aspirated GAS
2009 GMC Savana 1500 5.3L 5328CC 325CID V8 OHV 16 Valve Naturally Aspirated GAS
2009 GMC Sierra 1500 4.8L -CC 294CID V8 OHV 16 Valve Naturally Aspirated GAS
2009 GMC Yukon XL 2500 6.0L 5967CC 364CID V8 OHV 16 Valve Naturally Aspirated GAS
2009 Hummer H3 3.7L 3654CC 223CID L5 DOHC 20 Valve Naturally Aspirated GAS
2009 Saab 9-7x 4.2L -CC 256CID L6 DOHC 24 Valve Naturally Aspirated GAS
2009, 2011-2012 GMC Canyon 5.3L 5328CC 325CID V8 OHV 16 Valve Naturally Aspirated GAS
2009, 2015-2016 GMC Sierra 5.3L 5328CC 325CID V8 OHV 16 Valve Naturally Aspirated GAS
2009-2010 Chevrolet Colorado 2.9L 2921CC 178CID L4 DOHC 16 Valve Naturally Aspirated GAS
2009-2013 Cadillac Escalade EXT 6.2L 6162CC 376CID V8 OHV 16 Valve Naturally Aspirated FLEX
2009-2013, 2015-2018 GMC Yukon 6.2L 6162CC 376CID V8 OHV 16 Valve Naturally Aspirated FLEX
2009-2014 GMC Yukon XL 1500 6.2L 6162CC 376CID V8 OHV 16 Valve Naturally Aspirated FLEX
2009-2018 Cadillac Escalade 6.2L 6162CC 376CID V8 OHV 16 Valve Naturally Aspirated FLEX
2009-2018 Cadillac Escalade ESV 6.2L 6162CC 376CID V8 OHV 16 Valve Naturally Aspirated FLEX
2010 GMC Canyon 2.9L 2921CC 178CID L4 DOHC 16 Valve Naturally Aspirated GAS
2010 Hummer H3 5.3L 5328CC 325CID V8 OHV 16 Valve Naturally Aspirated FLEX
2010, 2013 GMC Savana 1500 5.3L 5328CC 325CID V8 OHV 16 Valve Naturally Aspirated FLEX
2010, 2013-2014 Chevrolet Express 1500 5.3L 5328CC 325CID V8 OHV 16 Valve Naturally Aspirated FLEX
2010-2013 Chevrolet Avalanche 5.3L 5328CC 325CID V8 OHV 16 Valve Naturally Aspirated FLEX
2010-2013 Chevrolet Silverado 1500 6.0L 5967CC 364CID V8 OHV 16 Valve Naturally Aspirated FULL HYBRID EV-FLEX (FHEV)
2010-2013 Chevrolet Suburban 2500 6.0L 5967CC 364CID V8 OHV 16 Valve Naturally Aspirated FLEX
2010-2013 GMC Sierra 1500 6.0L 5967CC 364CID V8 OHV 16 Valve Naturally Aspirated FULL HYBRID EV-FLEX (FHEV)
2010-2013 GMC Yukon XL 2500 6.0L 5967CC 364CID V8 OHV 16 Valve Naturally Aspirated FLEX
2010-2013, 2017 GMC Sierra 5.3L 5328CC 325CID V8 OHV 16 Valve Naturally Aspirated FLEX
2010-2014 Chevrolet Suburban 1500 5.3L 5328CC 325CID V8 OHV 16 Valve Naturally Aspirated FLEX
2011-2012 Chevrolet Colorado 5.3L 5328CC 325CID V8 OHV 16 Valve Naturally Aspirated GAS
2011-2012 Chevrolet Express 1500 4.3L -CC 262CID V6 OHV 12 Valve Naturally Aspirated GAS
2011-2012, 2014 GMC Savana 1500 4.3L -CC 262CID V6 OHV 12 Valve Naturally Aspirated GAS
2014 GMC Sierra 1500 4.3L -CC 262CID V6 OHV 12 Valve Naturally Aspirated FLEX
2014 GMC Yukon 5.3L 5328CC 325CID V8 OHV 16 Valve Naturally Aspirated FLEX
2014, 2016, 2018 Chevrolet Silverado 1500 5.3L 5328CC 325CID V8 OHV 16 Valve Naturally Aspirated FLEX
2014, 2018 GMC Sierra 6.2L 6162CC 376CID V8 OHV 16 Valve Naturally Aspirated GAS
2014-2018 Chevrolet Suburban 5.3L 5328CC 325CID V8 OHV 16 Valve Naturally Aspirated FLEX
2015 Chevrolet Silverado 1500 4.3L -CC 262CID V6 OHV 12 Valve Naturally Aspirated FLEX
2015-2017 GMC Sierra 1500 5.3L 5328CC 325CID V8 OHV 16 Valve Naturally Aspirated FLEX
2015-2018 GMC Canyon 2.5L 2457CC 153CID L4 DOHC 16 Valve Naturally Aspirated GAS
2015-2018 GMC Yukon XL 6.2L 6162CC 376CID V8 OHV 16 Valve Naturally Aspirated FLEX
2017 Chevrolet Silverado 1500 6.2L 6162CC 376CID V8 OHV 16 Valve Naturally Aspirated GAS
2018-2019 GMC Sierra 1500 5.3L 5328CC 325CID V8 OHV 16 Valve Naturally Aspirated GAS
2020 GMC Sierra 1500 2.7L 2720CC 166CID L4 DOHC 16 Valve Turbocharged GAS
2021 GMC Sierra 1500 3.0L 2993CC 183CID L6 DOHC 24 Valve Turbocharged DIESEL
Part Numbers: 74040887

Specifications

  • Brand: American Axle & Manufacturing
  • Part Number: 74040887
  • Part Type: Differential Spider and Pinion Gear Kit
  • GTIN: 00840382503184
  • Package Dimensions: 5.0000 x 5.0000 x 5.0000 IN
  • Package Weight: 4.2500 PG
  • Package Quantity: 1 EA

Warranty

  • Warranty Type: Limited
  • Warranty Duration: 1X Years
  • Warranty Description: Limited, see demandaam.com

Returns

30-Day Money-Back Guarantee

We want you to be completely satisfied with your purchase! If you are not happy for any reason, you may return the item within 30 days for a refund, minus shipping fees, provided that: The part is brand new, uninstalled, and undamaged in any way.

To initiate a return, please contact us or email support@mizumoauto.com for a Return Authorization Number (RMA) and the return shipping address. Returns without an RMA number will be refused and returned to you at your expense.

Return Requirements:

  • Items must be securely packed in the original manufacturer's packaging.
  • All original materials must be included, such as hardware, manuals, protective caps, wrapping, and instructions.
  • You must obtain and retain the tracking number for your return.

Non-Returnable Items:

  • Piston rings, main bearings, and rod bearings are non-returnable if the manufacturer’s seal or shrink-wrapped plastic has been opened. No exceptions—this ensures the integrity of the parts you receive.

We are not responsible for lost or damaged returns. If your return is lost or damaged during shipping, a refund cannot be issued, as the item cannot be resold or returned to the supplier. Please file a claim directly with your shipping carrier for reimbursement.

Refunds are processed within 1-2 business days after we receive and inspect the returned item. Please allow this processing time before inquiring about your refund status.

 

Warranty

Mizumo Auto provides a 90-day Limited Warranty against defects in workmanship and materials under normal service conditions, effective from the original delivery date.

This warranty is non-transferable and applies only to the original purchaser. Coverage is limited to the replacement or refund of defective products.

Exclusions:

The warranty does not cover labor costs, damage resulting from accidents, misuse, alterations, or unauthorized modifications, as well as additional expenses such as towing, fluids, oils, car rentals, and any other parts not included in the original purchase.

Warranty Claims Process:

  • All warranty claims must be pre-authorized and returned prepaid to Mizumo Auto for inspection and approval.
  • No exchanges will be made for products that have been damaged, misused, or improperly installed. We strongly recommend professional installation.
  • The buyer assumes all risk of damage resulting from improper installation.

All disputes related to transactions shall be resolved by a court of competent jurisdiction in Los Angeles County, California.

 

Shipping

We offer Free UPS Ground or USPS Ground Advantage shipping within the continental U.S. (48 states).

Shipping to Other Locations:

A delivery surcharge applies to shipments to: Alaska, Hawaii, Puerto Rico, U.S. territories, APO/FPO addresses, Canada, and international destinations.

Order Processing & Tracking:

  • Orders are shipped Monday through Friday, excluding holidays.
  • Orders placed before 3:00 PM PST will ship the same day, unless unexpected delays occur.
  • A tracking number will be emailed within one business day after shipping.

If you do not receive a tracking number, please:

  • Check your spam/junk folder.
  • If it's not there, contact us via phone or eBay message for assistance.

International Orders:

Import duties, taxes, and brokerage fees are not included in the shipping fee. Please check with your shipping carrier and local customs office regarding any applicable fees before placing your order.

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