SKU: MOTBP882373
UPC: 698231759011
MPN: BP882373
The Motive Gear 8.2 Buick Pontiac 3.73 Ring and Pinion is a performance-grade differential gear set engineered for General Motors 10-bolt differentials, delivering precise power transfer and improved driveline efficiency across a wide range of driving conditions. This complete kit arrives ready to install, featuring a 3.73 gear ratio optimized for balanced acceleration and highway cruising characteristics on classic and modern GM platforms.
The 27-spline pinion design ensures solid engagement with the ring gear, minimizing backlash and reducing drivetrain noise during both load and coast conditions. Motive Gear's ring and pinion sets are manufactured to exacting tolerances and feature premium materials that withstand sustained torque loads common in modified or heavy-duty applications. The 8.2-inch diameter housing specification confirms compatibility with GM 10-bolt rear axle assemblies in Buick and Pontiac models spanning multiple generations, while the BPO-style design integrates seamlessly with factory mounting points and bearing configurations.
Buyers selecting a 3.73 ratio typically seek a middle ground between low-end responsiveness and fuel economy—ideal for street-driven vehicles that see varied duty from neighborhood cruising to occasional highway travel. This gear ratio has become a go-to specification for restorations, performance upgrades, and drivetrain rebuilds where the original differential requires replacement. Installation requires proper pinion depth adjustment and carrier bearing preload setup, making professional installation or detailed technical knowledge essential for reliable operation and longevity.
Motive Gear has established a reputation for delivering OEM-quality and performance-grade differential components at competitive pricing. The 3.73 Ring and Pinion kit is a popular choice among classic car hobbyists, hot rod builders, and owners performing complete rear axle restoration or upgrade work on Buick, Pontiac, and other GM vehicles using the 8.2-inch 10-bolt platform.
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