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Differential Ring and Pinion for 1964-1972 Buick Sportwagon
InfoVehicle Info Needed
EXCELPART NUMBER: 857-12BC373T

Differential Ring and Pinion for 1964-1972 Buick Sportwagon

$18514
ShippingShips on 11/06/2026
Lowest PriceLowest Price Guarantee

Differential Ring and Pinion
  • 1964-1972 Buick Sportwagon
  • 3.73 Gear Ratio with 41-Tooth Ring Gear
  • 8620 Steel Ring and Pinion Construction
  • 30-Spline Pinion Shaft, 1.625 in. Diameter

    This differential ring and pinion is manufactured to OEM specifications for 1964-1972 Buick Sportwagon and other listed applications, restoring correct drivetrain fit and function.

    Technical Specifications:

    • 1964-1972 Buick Sportwagon
    • 3.73 Gear Ratio with 41-Tooth Ring Gear
    • 8620 Steel Ring and Pinion Construction
    • 30-Spline Pinion Shaft, 1.625 in. Diameter
    • Requires 3.07 to 3.73 Ratio Carrier
    • 12-Bolt Ring Gear
    • Part TypeRing and Pinion
    BrandEXCEL
    Package Height6.0
    Package Width12.0
    Package Length14.0
    Weight16.25 PG
    Part CategoryReplacement Parts
    Ring Gear RotationStandard
    Ring Gear Tooth Quantity41
    Differential Case Design TypeGM 8.875 Car
    PositionRear
    Differential Carrier Break3.07 to 3.73 Ratio
    Cover Bolt Quantity12
    Pinion Spline Count30
    Ring Gear Material8620 Steel
    Ring Gear Outside Diameter8.875 in.
    Pinion Shaft Diameter1.625 in.
    Pinion Gear Tooth Quantity11
    Gear Ratio3.73
    Ring Gear Bolt Quantity12
    Part FitmentDirect Fit
    Mounting LocationRear
    ApplicationGM 8.875 Car (12-Bolt Car)
    Vendor Part Number12BC373T
    Package Qty1
    Package TypeEA
    Please click here to download the instructions PDF file

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