Differential G875390 Ring & Pinion Set Motive Gear 3.90 Ratio Fits GM 7.5"/7.625", 27 Spline Pinion, 10-Bolt, 7.5” Ring Gear, Replaces: Richmond 49-0284-1, Nitro GM7.5-390-NG, EXCEL GM75390
Differential G875390 Ring & Pinion Set Motive Gear 3.90 Ratio Fits GM 7.5"/7.625", 27 Spline Pinion, 10-Bolt, 7.5” Ring Gear, Replaces: Richmond 49-0284-1, Nitro GM7.5-390-NG, EXCEL GM75390
Differential G875390 Ring & Pinion Set Motive Gear 3.90 Ratio Fits GM 7.5"/7.625", 27 Spline Pinion, 10-Bolt, 7.5” Ring Gear, Replaces: Richmond 49-0284-1, Nitro GM7.5-390-NG, EXCEL GM75390
Differential G875390 Ring & Pinion Set Motive Gear 3.90 Ratio Fits GM 7.5"/7.625", 27 Spline Pinion, 10-Bolt, 7.5” Ring Gear, Replaces: Richmond 49-0284-1, Nitro GM7.5-390-NG, EXCEL GM75390
Differential G875390 Ring & Pinion Set Motive Gear 3.90 Ratio Fits GM 7.5"/7.625", 27 Spline Pinion, 10-Bolt, 7.5” Ring Gear, Replaces: Richmond 49-0284-1, Nitro GM7.5-390-NG, EXCEL GM75390
Differential G875390 Ring & Pinion Set Motive Gear 3.90 Ratio Fits GM 7.5"/7.625", 27 Spline Pinion, 10-Bolt, 7.5” Ring Gear, Replaces: Richmond 49-0284-1, Nitro GM7.5-390-NG, EXCEL GM75390
Differential G875390 Ring & Pinion Set Motive Gear 3.90 Ratio Fits GM 7.5"/7.625", 27 Spline Pinion, 10-Bolt, 7.5” Ring Gear, Replaces: Richmond 49-0284-1, Nitro GM7.5-390-NG, EXCEL GM75390
Differential G875390 Ring & Pinion Set Motive Gear 3.90 Ratio Fits GM 7.5"/7.625", 27 Spline Pinion, 10-Bolt, 7.5” Ring Gear, Replaces: Richmond 49-0284-1, Nitro GM7.5-390-NG, EXCEL GM75390
Differential G875390 Ring & Pinion Set Motive Gear 3.90 Ratio Fits GM 7.5"/7.625", 27 Spline Pinion, 10-Bolt, 7.5” Ring Gear, Replaces: Richmond 49-0284-1, Nitro GM7.5-390-NG, EXCEL GM75390
Differential G875390 Ring & Pinion Set Motive Gear 3.90 Ratio Fits GM 7.5"/7.625", 27 Spline Pinion, 10-Bolt, 7.5” Ring Gear, Replaces: Richmond 49-0284-1, Nitro GM7.5-390-NG, EXCEL GM75390
Differential G875390 Ring & Pinion Set Motive Gear 3.90 Ratio Fits GM 7.5"/7.625", 27 Spline Pinion, 10-Bolt, 7.5” Ring Gear, Replaces: Richmond 49-0284-1, Nitro GM7.5-390-NG, EXCEL GM75390
Differential G875390 Ring & Pinion Set Motive Gear 3.90 Ratio Fits GM 7.5"/7.625", 27 Spline Pinion, 10-Bolt, 7.5” Ring Gear, Replaces: Richmond 49-0284-1, Nitro GM7.5-390-NG, EXCEL GM75390

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Differential G875390 Ring & Pinion Set Motive Gear 3.90 Ratio Fits GM 7.5"/7.625", 27 Spline Pinion, 10-Bolt, 7.5” Ring Gear, Replaces: Richmond 49-0284-1, Nitro GM7.5-390-NG, EXCEL GM75390

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Brand : Motive Gear
Motive Gear G875390 Differential Ring & Pinion Set features a 3.90 gear ratio.
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Differential G875390 Ring & Pinion Set Motive Gear 3.90 Ratio Fits GM 7.5"/7.625", 27 Spline Pinion, 10-Bolt, 7.5” Ring Gear, Replaces: Richmond 49-0284-1, Nitro GM7.5-390-NG, EXCEL GM75390
Differential G875390 Ring & Pinion Set Motive Gear 3.90 Ratio Fits GM 7.5"/7.625", 27 Spline Pinion, 10-Bolt, 7.5” Ring Gear, Replaces: Richmond 49-0284-1, Nitro GM7.5-390-NG, EXCEL GM75390
View Detail
Type
Differential Rings & Pinions
Title
Differential G875390 Ring & Pinion Set Motive Gear 3.90 Ratio Fits GM 7.5"/7.625", 27 Spline Pinion, 10-Bolt, 7.5” Ring Gear, Replaces: Richmond 49-0284-1, Nitro GM7.5-390-NG, EXCEL GM75390
Price
$363.70 USD
Vendor
Motive Gear
Description
Motive Gear G875390 Ring & Pinion Set – This 3.90 gear ratio set is engineered for GM 7.5"/7.625" differentials and designed for superior strength and performance.Whether you need better torque for off-roading or improved towing power, this gear set is the perfect upgrade.

More about this item : Differential G875390 Ring & Pinion Set Motive Gear 3.90 Ratio Fits GM 7.5"/7.625", 27 Spline Pinion, 10-Bolt, 7.5” Ring Gear, Replaces: Richmond 49-0284-1, Nitro GM7.5-390-NG, EXCEL GM75390

Motive Gear G875390 Ring & Pinion Set – This 3.90 gear ratio set is engineered for GM 7.5"/7.625" differentials and designed for superior strength and performance.

Whether you need better torque for off-roading or improved towing power, this gear set is the perfect upgrade.

Differential G875390 Ring & Pinion Set Motive Gear 3.90 Ratio Fits GM 7.5"/7.625", 27 Spline Pinion, 10-Bolt, 7.5” Ring Gear, Replaces: Richmond 49-0284-1, Nitro GM7.5-390-NG, EXCEL GM75390
Key Features
  • ✅ High-Performance 3.90 Ratio Gear Set – Optimized for GM 7.5" & 7.625" 10-bolt differentials.
  • ✅ Premium 8620 Steel Construction – Heat-treated for maximum strength and durability under extreme conditions.
  • ✅ Precision-Cut 10-Tooth Pinion & 39-Tooth Ring Gear – Features a 1.438" pinion shaft diameter and 27-spline pinion.
  • ✅ Direct Fitment for GM Cars & Trucks – Compatible with Buick, Cadillac, Chevrolet, GMC, Hummer, and Isuzu models.
  • ✅ 2-Year / 100,000-Mile Warranty – Backed by Motive Gear’s trusted quality for reliability and performance.
  • ✅ Standard Rotation – Ensures smooth engagement and dependable power transfer.
Technical Specifications
  • Length : 15.0 lb
  • Width : 11.0 lb
  • Height : 5.25 lb
  • Weight : 12.2 lb
Product Identifiers
  • ASIN B001CQQA78
  • UPC: 698231700334
Shipping Information
  • Ships From : United States
  • Brand : Motive Gear

Frequently Asked Questions About : Differential G875390 Ring & Pinion Set Motive Gear 3.90 Ratio Fits GM 7.5"/7.625", 27 Spline Pinion, 10-Bolt, 7.5” Ring Gear, Replaces: Richmond 49-0284-1, Nitro GM7.5-390-NG, EXCEL GM75390

01 What is the gear ratio of the Motive Gear G875390?

The gear ratio of the Motive Gear G875390 is 3.90.

02 What vehicles are compatible with the G875390?

The G875390 is compatible with GM vehicles including Buick, Cadillac, Chevrolet, GMC, Hummer, and Isuzu.

03 What material is the G875390 made from?

The G875390 is made from premium 8620 steel.

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