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37-9 Teeth, 4.11 Ratio

KWD 118.500
KWD 131.500
Brand
Motive Gear
Weight
7.3 kg
Size37-9 Teeth, 4.11 Ratio
– 1 +

Special Features

  • Performance Upgrade for GM 7.75" IRS The Motive Gear G80390 Differential Ring and Pinion provides a high-performance upgrade with a 3.90 gear ratio, designed for GM 7.75" IRS applications, perfect for enhancing driving dynamics.
  • High-Quality Construction Made from durable 8620 steel, the ring gear measures 7.75 inches in diameter, ensuring long-lasting reliability and strength for superior handling and performance in your vehicle's differential.
  • Precise Gear Tooth Count The pinion gear features 11 teeth, while the ring gear has 43 teeth, providing optimal gear engagement and efficient power transfer, contributing to better acceleration and overall vehicle performance.
  • Easy Compatibility with Pontiac GTO This ring and pinion set replaces part numbers 69-0461-1, GMBW-390-NG, and SS78-391, and is designed for the 2004-2006 Pontiac GTO with GM 7.75" IRS, ensuring a perfect fit for these models.
  • 2-Year or 100,000 Miles Warranty Motive Gear offers a 2-year or 100,000 miles warranty on the G80390 differential ring and pinion, providing peace of mind with a reliable, high-performance product for your GM 7.75" IRS differential.

Description

3.90 Ratio GM 7.75 IRS For 7.75 (9) Differential Ring and Pinion
3.90 Ratio GM 7.75 IRS For 7.75 (9) Differential Ring and Pinion Brand: Motive Gear
Specifications:Cover Bolt Quantity: 9
Differential Model: GM 7.75 IRS
Gear Ratio: 3.90
Pinion Gear Tooth Quantity: 11
Pinion Shaft Diameter: 1.376 Inch
Pinion Spline Count: 27
Prop 65: No
Ring Gear Bolt Quantity: 8
Ring Gear Material: 8620 Steel
Ring Gear Outside Diameter: 7.75 Inch
Ring Gear Rotation: Standard
Ring Gear Tooth Quantity: 43
Taxonomy:A: LD Differential
B: Ring and Pinion
C: Rear
D: 3.90
Notes: For GM 7.75" IRS; Performance Ring and Pinion; 3.90 Ratio
Warranty:Warranty Period: 2 Years or 100,000 Miles
Replaces:Richmond Gear: 69-0461-1
Nitro Gear & Axle: GMBW-390-NG
OE Aftermarket: SS78-391
Applications:2004-2006 Pontiac GTO

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