SKF BR3730 Differential Pinion Race - Rear Inner or Rear Outer
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SKF

SKF BR3730 Differential Pinion Race - Rear Inner or Rear Outer

Brand SKF BR3730
Position Rear Inner and Rear Outer
Width 1.187
Outside Diameter 3.672
Fits Chevrolet, Dodge, and GMC · 20 vehicles

Tapered roller race. Supports smooth bearing contact in differential service.

Precision raceway. Logarithmic profile and smooth finish help reduce noise.

SKF engineering. Built to high manufacturing standards for driveline use.

Cross-references 1458BR3730, 9759BR3730 and 450527 for the same application. See all 8.

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SKF differential pinion race

The SKF BR3730 is a differential pinion race for driveline and axle service. It is built as a tapered roller bearing race with a smooth raceway profile to support quiet, consistent operation in the differential assembly.

Key features

  • Tapered roller bearing race for differential pinion applications
  • Logarithmic raceway profile for smooth rolling contact
  • Ultra-smooth surface finish for quieter operation
  • Width: 1.187 in.
  • Outside diameter: 3.672 in.

Detailed description

SKF BR3730 is engineered for differential service where accurate bearing support and stable operation matter. The raceway design and finished surface help promote smooth movement under load, while the bearing race construction supports the pinion bearing assembly in the axle housing. This part number, BR3730, is used in select Chevrolet G30, GMC G3500, Dodge D400, and Dodge D450 applications listed below.

SKF has supplied bearing solutions for more than a century, and this race reflects that focus on precision manufacturing and consistent quality. If you are servicing a Chevrolet G30 or GMC G3500 rear inner differential application, or a Dodge D400 or Dodge D450 rear outer axle application, BR3730 provides the specified race dimensions and bearing style for the listed fitments. This part cross-references Monroe Shocks & Struts (e.g., 1458BR3730, 9759BR3730) for the same application.

What it is used for

  • Restoring proper pinion bearing support in the differential
  • Addressing noise caused by worn or rough bearing races
  • Correcting bearing fit issues from surface wear
  • Supporting smooth axle and driveline operation

Installation notes and tips

Verify axle configuration, ring gear size, ratio, and brake setup against the listed fitment before installation. Fits 1979-1984 Chevrolet G30, rear inner, with 10.50" ring gear and 4.10 or 4.56 ratios. Fits 1979-1984 GMC G3500, rear inner, with 10.50" ring gear and 4.10 or 4.56 ratios. Fits 1978-1981 Dodge D400, rear outer, Spicer 70 axle with 15" x 4" brakes. Fits 1978-1981 Dodge D450, rear outer, Spicer 70 axle with 15" x 4" brakes.

Quality assurance

SKF manufactures bearing components to high quality standards for long service life and safe operation.

This part fits 20 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
1984ChevroletG30Rear Innerw/10.50" Ring Gear, 4.10 & 4.56 Ratios
1984GMCG3500Rear Innerw/10.50" Ring Gear, 4.10 & 4.56 Ratios
1983ChevroletG30Rear Innerw/10.50" Ring Gear, 4.10 & 4.56 Ratios
1983GMCG3500Rear Innerw/10.50" Ring Gear, 4.10 & 4.56 Ratios
1982ChevroletG30Rear Innerw/10.50" Ring Gear, 4.10 & 4.56 Ratios
1982GMCG3500Rear Innerw/10.50" Ring Gear, 4.10 & 4.56 Ratios
1981ChevroletG30Rear Innerw/10.50" Ring Gear, 4.10 & 4.56 Ratios
1981DodgeD400Rear OuterSpicer 70 Axle w/ 15" X 4" Brks.
1981DodgeD450Rear OuterSpicer 70 Axle w/ 15" X 4" Brks.
1981GMCG3500Rear Innerw/10.50" Ring Gear, 4.10 & 4.56 Ratios
1980ChevroletG30Rear Innerw/10.50" Ring Gear, 4.10 & 4.56 Ratios
1980DodgeD400Rear OuterSpicer 70 Axle w/ 15" X 4" Brks.
1980DodgeD450Rear OuterSpicer 70 Axle w/ 15" X 4" Brks.
1980GMCG3500Rear Innerw/10.50" Ring Gear, 4.10 & 4.56 Ratios
1979ChevroletG30Rear Innerw/10.50" Ring Gear, 4.10 & 4.56 Ratios
1979DodgeD400Rear OuterSpicer 70 Axle w/ 15" X 4" Brks.
1979DodgeD450Rear OuterSpicer 70 Axle w/ 15" X 4" Brks.
1979GMCG3500Rear Innerw/10.50" Ring Gear, 4.10 & 4.56 Ratios
1978DodgeD400Rear OuterSpicer 70 Axle w/ 15" X 4" Brks.
1978DodgeD450Rear OuterSpicer 70 Axle w/ 15" X 4" Brks.
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
1458BR37309759BR3730450527550763291458870659149-2EX-1803CV31378