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Motive Gear Ring and Pinion Sets GM12-308 GM 8.875 in. (12-bolt) truck 3.08 Gears Gear, Pinion, 3.08:1 Ratio, GM, in., 12-Bolt, Set

SKU: MGRGM12-308

Ring and Pinion Gears

Motive Gear Ring and Pinion Sets GM12-308 GM 8.875 in. (12-bolt) truck 3.08 Gears Gear, Pinion, 3.08:1 Ratio, GM, in., 12-Bolt, Set

SKU: MGRGM12-308

Ring and Pinion Gears
A$974.89
BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.
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Description

Motive Gear is the leading manufacturer of driveline products for just about any vehicle, whether it is a stock daily driver or a full-competition 4x4 or race car. They are proud to offer an unmatched selection of quality components engineered and manufactured for the vehicle and for the way it is driven. Motive Gear ring and pinion sets are engineered to meet or exceed OEM specifications at a price that won't break your budget. Their broad selection of ring and pinion ratios is available for just about every vehicle made from the 1940s through the present.

All Motive Gear products meet strict quality standards through advanced manufacturing techniques and are backed by their strong warranty. Their in-house quality control lab utilizes state-of-the-art equipment to continuously check Motive Gear products for strength, tolerance, and hardness. Only after meeting stringent quality standards are Motive Gear products packaged and ready for delivery.

Part Type

Ring and Pinion Gears

Data: v4.2 - Upd: 2026-10-14 11:09:35

Specifications

Product Attributes - Brand
Motive Gear
Product Attributes - Manufacturer's Part Number
GM12-308
Product Attributes - Part Type
Ring and Pinion Gears
Product Attributes - Product Line
Motive Gear Ring and Pinion Sets
Product Attributes - UPC
698231020418
Product Attributes - Differential Case Design Type
GM 8.875 in. (12-bolt), truck
Product Attributes - Ring and Pinion Ratio
3.08:1
Product Attributes - Cover Bolts
12
Product Attributes - Ring Gear Bolts
12
Product Attributes - Pinion Spline Count
30
Product Attributes - Ring Gear Rotation
Standard
Product Attributes - Ring Gear Teeth
40
Product Attributes - Pinion Gear Teeth
13
Product Attributes - Ring Gear Diameter (in.)
8.875 in.
Product Attributes - Pinion Shaft Diameter (in.)
1.438 in.
Product Attributes - Installation Kit Included
No
Product Attributes - Cover Gasket Included
No
Product Attributes - Pinion Shims Included
No
Product Attributes - Carrier Shims Included
No
Product Attributes - Crush Sleeve Included
No
Product Attributes - Pinion Seal Included
No
Product Attributes - Pinion Nut Included
No
Product Attributes - Ring Gear Bolts Included
No
Product Attributes - Head Bearing Included
No
Product Attributes - Tail Bearing Included
No
Product Attributes - Carrier Bearings Included
No
Product Attributes - Axle Seals Included
No
Product Attributes - Axle Bearings Included
No
Product Attributes - Differential Cover Included
No
Product Attributes - Differential Oil Included
No
Product Attributes - Friction Modifier Included
No
Product Attributes - Installation DVD Included
No
Product Attributes - Quantity
Sold as a set.

Reference Information

Brand Name/s Motive Gear
StreetFX SKU mgrGM12-308
SFX Item ID 4797891
Supplier Item Code 4797891
Manufacturer SKU GM12-308
Manufacturer UPC N/A
Alternative References MOTGM12-308, 12-Bolt

Compatibility

Application Data
  • MakeBUICK
    ModelWILDCAT
    SubmodelBASE
    Beginning Year1964
    Ending Year1964
    Engine TypeV8
    Engine Size6.6L/401
    Engine FamilyBuick V8
    Axle LocationRear
    Liter6.6
    CID401
    CC6572
  • MakeBUICK
    ModelWILDCAT
    SubmodelBASE
    Beginning Year1964
    Ending Year1964
    Engine TypeV8
    Engine Size6.6L/401
    Engine FamilyBuick V8
    Axle LocationRear
    Liter6.6
    CID401
    CC6572
  • MakeBUICK
    ModelWILDCAT
    SubmodelBASE
    Beginning Year1964
    Ending Year1964
    Engine TypeV8
    Engine Size7.0L/425
    Engine FamilyBuick V8
    Axle LocationRear
    Liter7.0
    CID425
    CC6966
  • MakeBUICK
    ModelWILDCAT
    SubmodelBASE
    Beginning Year1964
    Ending Year1964
    Engine TypeV8
    Engine Size7.0L/425
    Engine FamilyBuick V8
    Axle LocationRear
    Liter7.0
    CID425
    CC6966
  • MakeBUICK
    ModelWILDCAT
    SubmodelBASE
    Beginning Year1965
    Ending Year1965
    Engine TypeV8
    Engine Size6.6L/401
    Engine FamilyBuick V8
    Axle LocationRear
    Liter6.6
    CID401
    CC6572
  • MakeBUICK
    ModelWILDCAT
    SubmodelBASE
    Beginning Year1965
    Ending Year1965
    Engine TypeV8
    Engine Size6.6L/401
    Engine FamilyBuick V8
    Axle LocationRear
    Liter6.6
    CID401
    CC6572
  • MakeBUICK
    ModelWILDCAT
    SubmodelBASE
    Beginning Year1965
    Ending Year1965
    Engine TypeV8
    Engine Size7.0L/425
    Engine FamilyBuick V8
    Axle LocationRear
    Liter7.0
    CID425
    CC6966
  • MakeBUICK
    ModelWILDCAT
    SubmodelBASE
    Beginning Year1965
    Ending Year1965
    Engine TypeV8
    Engine Size7.0L/425
    Engine FamilyBuick V8
    Axle LocationRear
    Liter7.0
    CID425
    CC6966
  • MakeBUICK
    ModelWILDCAT
    SubmodelBASE
    Beginning Year1966
    Ending Year1966
    Engine TypeV8
    Engine Size6.6L/401
    Engine FamilyBuick V8
    Axle LocationRear
    Liter6.6
    CID401
    CC6572
  • MakeBUICK
    ModelWILDCAT
    SubmodelBASE
    Beginning Year1966
    Ending Year1966
    Engine TypeV8
    Engine Size6.6L/401
    Engine FamilyBuick V8
    Axle LocationRear
    Liter6.6
    CID401
    CC6572
  • MakeBUICK
    ModelWILDCAT
    SubmodelBASE
    Beginning Year1966
    Ending Year1966
    Engine TypeV8
    Engine Size7.0L/425
    Engine FamilyBuick V8
    Axle LocationRear
    Liter7.0
    CID425
    CC6966
  • MakeBUICK
    ModelWILDCAT
    SubmodelBASE
    Beginning Year1966
    Ending Year1966
    Engine TypeV8
    Engine Size7.0L/425
    Engine FamilyBuick V8
    Axle LocationRear
    Liter7.0
    CID425
    CC6966
  • MakeBUICK
    ModelWILDCAT
    SubmodelBASE
    Beginning Year1967
    Ending Year1967
    Engine TypeV8
    Engine Size7.0L/430
    Engine FamilyBuick V8
    Axle LocationRear
    Liter7.0
    CID430
    CC7047
  • MakeBUICK
    ModelWILDCAT
    SubmodelBASE
    Beginning Year1967
    Ending Year1967
    Engine TypeV8
    Engine Size7.0L/430
    Engine FamilyBuick V8
    Axle LocationRear
    Liter7.0
    CID430
    CC7047
  • MakeBUICK
    ModelWILDCAT
    SubmodelBASE
    Beginning Year1968
    Ending Year1968
    Engine TypeV8
    Engine Size7.0L/430
    Engine FamilyBuick V8
    Axle LocationRear
    Liter7.0
    CID430
    CC7047
  • MakeBUICK
    ModelWILDCAT
    SubmodelBASE
    Beginning Year1969
    Ending Year1969
    Engine TypeV8
    Engine Size7.0L/430
    Engine FamilyBuick V8
    Axle LocationRear
    Liter7.0
    CID430
    CC7047
  • MakeBUICK
    ModelWILDCAT
    SubmodelCUSTOM
    Beginning Year1965
    Ending Year1966
    Engine TypeV8
    Engine Size6.6L/401
    Engine FamilyBuick V8
    Axle LocationRear
    Liter6.6
    CID401
    CC6572
  • MakeBUICK
    ModelWILDCAT
    SubmodelCUSTOM
    Beginning Year1965
    Ending Year1966
    Engine TypeV8
    Engine Size7.0L/425
    Engine FamilyBuick V8
    Axle LocationRear
    Liter7.0
    CID425
  • MakeBUICK
    ModelWILDCAT
    SubmodelCUSTOM
    Beginning Year1967
    Ending Year1967
    Engine TypeV8
    Engine Size7.0L/430
    Engine FamilyBuick V8
    Axle LocationRear
    Liter7.0
    CID430
  • MakeBUICK
    ModelWILDCAT
    SubmodelCUSTOM
    Beginning Year1968
    Ending Year1968
    Engine TypeV8
    Engine Size7.0L/430
    Engine FamilyBuick V8
    Axle LocationRear
    Liter7.0
    CID430
    CC7047
  • MakeBUICK
    ModelWILDCAT
    SubmodelCUSTOM
    Beginning Year1969
    Ending Year1969
    Engine TypeV8
    Engine Size7.0L/430
    Engine FamilyBuick V8
    Axle LocationRear
    Liter7.0
    CID430
    CC7047
  • MakeBUICK
    ModelWILDCAT
    SubmodelCUSTOM
    Beginning Year1970
    Ending Year1970
    Engine TypeV8
    Engine Size7.5L/455
    Engine FamilyBuick V8
    Axle LocationRear
    Liter7.5
    CID455
    CC7456
  • MakeBUICK
    ModelWILDCAT
    SubmodelCUSTOM
    Beginning Year1970
    Ending Year1970
    Engine TypeV8
    Engine Size7.5L/455
    Engine FamilyBuick V8
    Axle LocationRear
    Liter7.5
    CID455
    CC7456
  • MakeBUICK
    ModelWILDCAT
    SubmodelCUSTOM
    Beginning Year1970
    Ending Year1970
    Engine TypeV8
    Engine Size7.5L/455
    Engine FamilyBuick V8
    Axle LocationRear
    Liter7.5
    CID455
    CC7456
  • MakeBUICK
    ModelWILDCAT
    SubmodelDELUXE
    Beginning Year1965
    Ending Year1965
    Engine TypeV8
    Engine Size6.6L/401
    Engine FamilyBuick V8
    Axle LocationRear
    Liter6.6
    CID401
    CC6572

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