Motive Gear Differential Ring and Pinion GM12-411; 4.11 GM 8.875 in. (Truck) 12 Bolt for 1969 to 1966 Chevy, GMC Blazer (69 to 74), C10 (75 to 82), C10 Panel (65 to 67), C10 Pickup (64 to 74), C10 Suburban (67 to 82), C20 (75 to 81), C20 Pickup (69 to 74), C20 Suburban (73 to 81), G10 (75 to 81), G10 Van (64 to 74), G20 (75 to 81), G20 Van (67 to 74), K10 (75 to 81), K10 Pickup (64 to 74), K10 Suburban (67 to 82), K20 (75 to 81), K20 Pickup (69 to 74), K20 Suburban (73 to 81), K5 Blazer (75 to 81), P10 (75 to 80), P10 Series (65 to 67), P10 Van (67 to 74), P20 (75 to 81), P20 Series (66 to 67), P20 Van (68 to 74), Suburban (65 to 66), C15 (75 to 78), C15 Suburban (75 to 78), C15/C1500 Pickup (67 to 74), C15/C1500 Suburban (67 to 74), C1500 (79 to 82), C1500 Suburban (79 to 81), C25 (75 to 78), C25 Suburban (75 to 78), C25/C2500 Pickup (69 to 74), C25/C2500 Suburban (69 to 74), C2500 (79 to 81), C2500 Suburban (79 to 81), G1000 Series (65 to 66), G15 (75 to 78), G15/G1500 Van (67 to 74), G1500 (79 to 81), G25 (75 to 78), G25/G2500 Van (67 to 74), G2500 (79 to 81), Jimmy (70 to 81), K1000 Pickup (66 to 66), K15 (75 to 78), K15 Suburban (75 to 78), K15/K1500 Pickup (66 to 74), K15/K1500 Suburban (67 to 74), K1500 (79 to 82), K1500 Suburban (79 to 82), P15 (75 to 78), P15/P1500 Van (67 to 74), P1500 (79 to 80), P25 (75 to 78), P25/P2500 Van (67 to 74), P2500 (79 to 81), PB1000 Series (65 to 66), PB15 Series (66 to 66), PB1500 Series (65 to 65), PB2500 Van (66 to 66)

Specifications

Year:

1969 to 1966

Make:

Chevy, GMC

Model:

Blazer (69 to 74), C10 (75 to 82), C10 Panel (65 to 67), C10 Pickup (64 to 74), C10 Suburban (67 to 82), C20 (75 to 81), C20 Pickup (69 to 74), C20 Suburban (73 to 81), G10 (75 to 81), G10 Van (64 to 74), G20 (75 to 81), G20 Van (67 to 74), K10 (75 to 81), K10 Pickup (64 to 74), K10 Suburban (67 to 82), K20 (75 to 81), K20 Pickup (69 to 74), K20 Suburban (73 to 81), K5 Blazer (75 to 81), P10 (75 to 80), P10 Series (65 to 67), P10 Van (67 to 74), P20 (75 to 81), P20 Series (66 to 67), P20 Van (68 to 74), Suburban (65 to 66), C15 (75 to 78), C15 Suburban (75 to 78), C15/C1500 Pickup (67 to 74), C15/C1500 Suburban (67 to 74), C1500 (79 to 82), C1500 Suburban (79 to 81), C25 (75 to 78), C25 Suburban (75 to 78), C25/C2500 Pickup (69 to 74), C25/C2500 Suburban (69 to 74), C2500 (79 to 81), C2500 Suburban (79 to 81), G1000 Series (65 to 66), G15 (75 to 78), G15/G1500 Van (67 to 74), G1500 (79 to 81), G25 (75 to 78), G25/G2500 Van (67 to 74), G2500 (79 to 81), Jimmy (70 to 81), K1000 Pickup (66 to 66), K15 (75 to 78), K15 Suburban (75 to 78), K15/K1500 Pickup (66 to 74), K15/K1500 Suburban (67 to 74), K1500 (79 to 82), K1500 Suburban (79 to 82), P15 (75 to 78), P15/P1500 Van (67 to 74), P1500 (79 to 80), P25 (75 to 78), P25/P2500 Van (67 to 74), P2500 (79 to 81), PB1000 Series (65 to 66), PB15 Series (66 to 66), PB1500 Series (65 to 65), PB2500 Van (66 to 66)

Application:

GM 8.875 in. (Truck)

Ratio:

4.11

Ring Gear Diameter:

8.875 in.

Pinion Diameter:

1.438 in.

Pinion Splines:

30 Spline

Number of Bolts on Cover:

12 Bolt

Ring Gear and Pinion Teeth Cut:

37 to 9

Cases:

Fits 3.73 and Numerically Higher Carriers

Material:

8620 Steel

Number of Ring Gear Bolts:

12 Bolt

Standard or Reverse Rotation:

Standard

Quantity:

Sold As Kit