1981 CHEVROLET K20 Differential & Rear-End Components

Mini Spool, 30-spline, Steel, GM 10.5 in. (14-bolt), Each

Part Number: ALY-GM14MSPL

4.13 out of 5 stars ( 8 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Bearing, Differential Carrier, Kit

Part Number: TMK-SET45

4.44 out of 5 stars ( 9 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Ring and Pinion Installation Kit, Super Kit, GM, 8.875 in., Kit

Part Number: MGR-R12RSKT

4.14 out of 5 stars ( 7 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Gear, Ring and Pinion, 3.90:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, Set

Part Number: MGR-GM10-390

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Ring and Pinion-GM 8.5/8.625

Part Number: MGR-GM10-373A

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Ring and Pinion Gear, 3.73:1 Ratio, GM, 8.5 in./8.6 in., Rear, Set

Part Number: SPZ-36214

4.5 out of 5 stars ( 6 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Gear, Ring and Pinion, 4.30:1 Ratio, GM, 8.5/8.6 in., Set

Part Number: MGR-G885430

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Differential Carrier Bearings, Steel, Races, Shims, Rear, GM 8.2 in., GM 8.5 in., Kit

Part Number: YGA-57008

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Gear, Ring and Pinion, EXCel, 4.56:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, Set

Part Number: RMG-GM85456

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Yukon front 4340 Chromoly axle kit for 1979-87 GM 8.5 in. 1/2 ton truck and Blazer

Part Number: YGA-21325

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Ring & Pinion Gear, 3.42 Ratio, GM, 10.5 in. 14-Bolt, Set

Part Number: YGA-24466

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Gear, Ring and Pinion, 4.10:1 Ratio, GM, 9.5 in., 14-Bolt, Truck, Set

Part Number: MGR-GM9-5-410

3.4 out of 5 stars ( 5 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Gear, Ring and Pinion, EXCel, 3.08:1 Ratio, GM, 8.875 in., 12-Bolt Truck, Set

Part Number: RMG-12BT308

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Gear, Ring and Pinion, 4.56:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-6901671

2.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Locking Hubs, Manual, Street Master, Stainless Steel, Polished, Chevy, Dodge, Ford, GMC, Jeep, Plymouth, Pair

Part Number: MMK-302

4.25 out of 5 stars ( 8 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Ring and Pinion Installation Kit, Master Kit, GM, 8.5 in., 30-Spline Pinion, Kit

Part Number: MGR-R10REMKT

4.0 out of 5 stars ( 7 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Ring and Pinion Installation Kit, Master Kit, GM, 8.5 in., Kit

Part Number: MGR-R10RMKT

4.5 out of 5 stars ( 16 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Gear, Ring and Pinion, 3.42:1 Ratio, GM, 9.5 in., 14-Bolt, Truck, Set

Part Number: MGR-GM9-5-342

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Ring and Pinion Gears, 4.56:1 Ratio, 30-spline, Standard Ring Gear Rotation, GM 10.5 in. (14-bolt), Set

Part Number: YGA-24137

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Gear, Ring and Pinion, 3.90:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-4900341

4.67 out of 5 stars ( 9 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Ring and Pinion Gear Installation Kit, Master Overhaul Kit, 30 Spline, GM 10.5 in., 14-Bolt, Truck, Kit

Part Number: YGA-14070

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Differential Carrier Bearings, Steel, GM 8.5 in., Kit

Part Number: YGA-57009

4.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping

Bearing Race, Differential Pinion, 2.687 in. Outside Diameter, Each

Part Number: TMK-M88010

5.0 out of 5 stars ( 8 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Ring and Pinion Installation Kit, GM, 8.5 in., GM, Kit

Part Number: MGR-R10R

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Differential, Lock-Right, Locker, 30-Spline, GM, 10.5 in., Each

Part Number: PWT-1955-LR

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

• Free Shipping