8.6″ AXLE ASSY ’06-’09 GM ENVOY & TRAILBLAZER 3.42 POSI Rear Differential Assembly

8.6″ axle assembly For over 30 years, Zumbrota Drivetrain has been a trusted provider serving a nationwide customer base. We offer a comprehensive selection of new, remanufactured, OE replacement, and performance manual transmissions, transfer cases, and differentials. Our inventory also includes top-quality components for rebuilding and repair.

We supply drivetrain parts for a wide range of foreign and domestic passenger cars, SUVs, and light-duty trucks.

Premium Remanufactured Rear Differentials

Many companies claim to offer rear differentials, but at Zumbrota Drivetrain, we truly understand what it takes to provide a superior remanufactured rear differential assembly.

For nearly 30 years, rear differentials have been a core part of our business. We don’t cut corners, and we avoid marketing gimmicks. Instead, we focus on delivering a best-in-class product that meets the demands of various applications, including passenger vehicles, OHVs, race cars, and pulling trucks.

Rear Differential Features: 8.6″ axle assembly

• Surface Wear & Crack Testing: Housings are rigorously tested to ensure durability and performance.
• Comprehensive Internal Inspections: 100% inspection of all key internal components, including:
  • Ring & Pinions
  • Internal Gears
  • Clutches
  • Carriers
• Complete Bearing & Seal Replacement: All bearings, seals, crush sleeves, pinion nuts, and shims are replaced.
• State-of-the-Art Cleaning Process  Our hydroblasting and rinsing process restores housings to an OEM finish.
• Optimized Gear Patterns: Gear patterns are checked during remanufacturing to ensure optimal tooth contact, increasing the gear set’s lifespan.
• Precision Rolling Torque Setup: Using inch-pound measurements, we establish the correct rolling torque for improved longevity.
• Backlash Clearance Adjustments: ensuring proper gear lubrication and minimizing noise.

Note: A refundable core charge will be applied to the purchase of this product.

Product Details: 8.6″ axle assembly

Specifications:

• Engine Compatibility: 5.3L | 4.2L
• Gear Ratio: 3.42
• Rear Differential Type: GM 8.5
• Ring Gear Size: 8.5 Inch
• Ratio Option: GU6
• Wheel Size: 18 Inch
• Traction Type: With Posi-Traction

Vehicle Compatibility to 8.6″ axle assembly

This remanufactured rear differential is compatible with the following vehicles:

Chevrolet

• 2002-2009 Chevrolet TrailBlazer (GM 8.5”)

GMC

• 2002-2009 GMC Envoy (GM 8.5”)