Track OrderOrder Status & ReturnsHelpGift CardsHelpHelp CenterPhone1-800-345-4545
Logo
Cart0
$000
3.31 Ratio Ring and Pinion Set for GM 12-Bolt 8.875 in. Rear Ends [30-Spline]
InfoVehicle Info Needed
MOSER ENGINEERINGPART NUMBER: 718-12B331

3.31 Ratio Ring and Pinion Set for GM 12-Bolt 8.875 in. Rear Ends [30-Spline]

$33500
ShippingShips Tomorrow
Lowest PriceLowest Price Guarantee

Ring and Pinion Set
  • GM 12-Bolt 8.875 in. Rear Ends
  • 3.31:1 Ratio
  • 30-Spline
  • Standard Rotation
  • 12 Cover Bolts
  • Sold as a Set

    A GM 12-bolt running a tall factory ratio struggles to get a heavier car moving, and re-gearing is the most direct fix short of changing the rear end entirely. This 3.31 set is CAD-designed and CNC-machined specifically for the 8.875 in. 12-bolt case, so it drops in without hunting for an adapter or spacer.

    Moser Engineering 12B331 Ring and Pinion Set Features:

    • Fits GM 12-bolt 8.875 in. rear ends, passenger car
    • 3.31:1 ratio
    • 30-spline
    • Standard rotation
    • 12 cover bolts
    • CAD-designed and CNC-machined
    • Computer-controlled heat treatment
    • Sold as a set
    • Part TypeRing and Pinion
    BrandMOSER ENGINEERING
    Part CategoryPerformance Parts
    QuantitySold as a Set
    Gear Ratio3.31
    Cover Bolts12
    Spline Count30
    Part FitmentDirect Fit
    RotationStandard
    Vendor Part Number12B331
    Package Qty1
    Package TypeEA
    Some parts are not legal for use in California or other states with similar laws / regulations
    p65 warning