PONTIAC CATALINA Differential & Rear-End Components

Spool, Mini, Steel, 30-Spline, 12-Bolt, GM 8.875 in., Each

Part Number: RMG-78-1230-1

Not Yet Reviewed

Estimated Ship Date: Mar 13, 2026 if ordered today

• Drop Ship
• Special Order

59-64 GM B-Body 9-Inch Crate, Black PC, 31-Spline Axle, 3.70 Ratio, Helical Worm Gear Differential, Brakes Not Included

Part Number: CUR-CR-GB237TNBB

Not Yet Reviewed

Estimated Ship Date: Mar 18, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Ring and Pinion Installation Kit, GM, 7.5 in./7.625 in., 10-Bolt, 1977-1981, 27-Spline Pinion, Kit

Part Number: RMG-8310161

2.0 out of 5 stars ( 1 )

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

• Free Shipping

USA Standard Ring & Pinion "thick" gear set for GM 7.5" in a 4.11 ratio

Part Number: SPZ-36200

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 9, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Differential Clutch, Steel Pack, Dura-Grip, Eaton, 18-Plate, GM, 8.875 in., Set

Part Number: YGA-16110

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 25, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Ring and Pinion Kit

Part Number: RMG-GM75308

Not Yet Reviewed

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

• Free Shipping

Differential Internals, Yukon Dura Grip or Eaton Positraction Internals for 8.5" GM with 28 Spline Axles, Kit

Part Number: YGA-16052

Not Yet Reviewed

Estimated Ship Date: Mar 25, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Ring and Pinion Gears, 3.42:1 Ratio, 27-spline, Standard Ring Gear Rotation, GM 7.5 in., GM 7.625 in., Set

Part Number: SPZ-36195

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Pinion Crush Sleeves, Steel, GM, 8.5 in., 8.6 in., 8.75 in., Pair

Part Number: RNB-81057

3.67 out of 5 stars ( 3 )

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

Differential Carrier, Spartan Locker, Steel, 30-spline, Rear, GM 8.5 in., Each

Part Number: SPZ-17041

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Gear, Ring and Pinion, 3.08:1 Ratio, GM, 8.5/8.6 in., Set

Part Number: MGR-G885308

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Mar 13, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Ring Gear Spacer, 0.200 in. Thick, 10-bolt, GM 8.5 in., Each

Part Number: MGR-085050

4.5 out of 5 stars ( 6 )

Estimated Ship Date: Mar 13, 2026 if ordered today

• Drop Ship
• Special Order

Carrier Shims, Super, Steel, Set of 18

Part Number: YGA-16042

3.11 out of 5 stars ( 9 )

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

Ring and Pinion Installation Kit, GM 8.2 in. BOP Axle, Rear, Kit

Part Number: SPZ-37054

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Ring and Pinion Installation Kit, Basic, GM 8.5 in., Front/Rear, Kit

Part Number: MGR-R10RTPK

Not Yet Reviewed

Estimated Ship Date: Mar 13, 2026 if ordered today

• Drop Ship
• Special Order

Differential Cross Shaft, Steel, 0.795 in. Diameter, Each

Part Number: YGA-33401

5.0 out of 5 stars ( 1 )

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

Gear, Ring and Pinion, 3.73:1 Ratio, 1.438 in. Pinion, 27 Spline, 7.500 in. Ring Gear, GM 7.5/7.6 in., Set

Part Number: YGA-24146

5.0 out of 5 stars ( 1 )

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

• Free Shipping

Ring and Pinion Gear Installation Kit, Bearing Overhaul, 25 Spline, GM 8.2 in. BOP, Kit

Part Number: YGA-11066

Not Yet Reviewed

Estimated Ship Date: Mar 25, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Gear, Ring and Pinion, 5.57:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-6901751

5.0 out of 5 stars ( 1 )

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

• Free Shipping

Ring & Pinion set, 3.90:1 Ratio, GM "O" Axle, Set

Part Number: YGA-24688

Not Yet Reviewed

Estimated Ship Date: Mar 23, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

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

Part Number: SPZ-36217

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Differential Ring and Pinion, USA Standard Ring & Pinion set for 8.2" Buick, Olds & Pontiac, 3.55

Part Number: SPZ-36368

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Carrier Shims, Ford 8.8 in., GM 12-Bolt Truck, GM 9.3 in. C-Axle, Kit

Part Number: RMG-3800071

4.13 out of 5 stars ( 8 )

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

Gear, Ring and Pinion, 4.56:1 Ratio, GM, 7.5 in., Set

Part Number: MGR-GM75-456

Not Yet Reviewed

Estimated Ship Date: Mar 13, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Gear, Ring and Pinion, 4.56:1 Ratio, 1.438 in. Pinion, 27 Spline, 7.500 in. Ring Gear, Series 3 Carrier, GM 7.5/7.6 in., Set

Part Number: YGA-24483

Not Yet Reviewed

Estimated Ship Date: Mar 23, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order