CHEVROLET Chevy big block Mark IV Differential & Rear-End Components

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: Today

• Free Shipping

Axles, Rear, 1541H Alloy Steel, 30-Spline, Chevy, GMC, Truck 12-Bolt, .875 in., 31.313 in. Length, Pair

Part Number: MSR-A30-70GMT2

3.83 out of 5 stars ( 6 )

Estimated Ship Date: Today

• Free Shipping

Gear, Ring and Pinion, 3.55:1 Ratio, GM, 12-Bolt Car, 3 Series, Set

Part Number: RMG-4900951

4.6 out of 5 stars ( 10 )

Estimated Ship Date: Today

• Free Shipping

Axle Shaft, OEM Replacement, 30-Spline, 31.313 in. Length, Chevy, GMC, 8.875 in., Rear, Each

Part Number: RMG-92-25192

4.57 out of 5 stars ( 7 )

Estimated Ship Date: Today

• Free Shipping

Pinion Bearing Spacer, Crush Sleeve Eliminator, Steel, Chrysler 9.25 in., GM 8.5 in., Each

Part Number: YGA-55048

4.85 out of 5 stars ( 26 )

Estimated Ship Date: Today

Ring and Pinion Complete Kit, 4.11:1 Ratio, 30-spline, Standard Rotation, GM 8.875 in., Rear, Kit

Part Number: YGA-10629

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Gear, Ring and Pinion, 3.42:1 Ratio, 1.625 in. Pinion, 30 Spline, 8.500 in. Ring Gear, GM 8.5/8.6 in., Set

Part Number: YGA-24157

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

• Free Shipping

Gear, Ring and Pinion, 3.55:1 Ratio, Chevy, Set

Part Number: MGR-V885355

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

• Free Shipping

Differential, Eaton Detroit Truetrac, 30-Spline, GM, 10.5 in. Ring Gear, 4.56 and Higher Ratios, Each

Part Number: ETN-915A547

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

• Free Shipping
• $75 Summit Bucks

Differential, Posi Performance, Limited Slip, 30-Spline, 12-Bolt, 4 Series, Chevy, GMC, Truck, Each

Part Number: ETN-19556-010

4.5 out of 5 stars ( 8 )

Estimated Ship Date: Today

• Free Shipping

Gear, Ring and Pinion, 4.10:1 Ratio, GM, 10.5 in., 14-Bolt, Fits 4.10:1 and Numerically Lower Carrier, Set

Part Number: MGR-GM10-5-410

4.86 out of 5 stars ( 7 )

Estimated Ship Date: Today

• Free Shipping

Ring and Pinion Gears,Yukon Gear & Axle 8.2" GM, 3.73 Ratio Rear Ring & Pinion GearInstall Kit 2.25" OD Axle Bearings & Seals

Part Number: YGA-10611

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Gear, Ring and Pinion, 3.73:1 Ratio, 1.438 in. Pinion, 30 Spline, 8.875 in. Ring Gear, GM 8.875 in., Set

Part Number: YGA-24128

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

• Free Shipping

Differential Carrier, Air Locker, Nodular Iron, Dana 60-HD, Kit

Part Number: ARB-RD167

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Axle Shaft, Rear, C-Clip, 1541H Alloy, 30 Spline, 31.438 in. Length, GM 8.875 in., ChevyGMC, Pickup/SUV, Each

Part Number: YGA-21256

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

• Free Shipping

Differential, Grip Pro Traction System, 30-Spline, GM 8.5in., 8.6 in., Each

Part Number: PWT-GT201030

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

• Free Shipping
• Mfr. Rebate

$40.00 Mail-In Rebate

Price after Manufacturer Rebate: $539.20

Rebate Expires: 12/31/2025

Get $40 back after rebate on this Powertrax Product! Go to https://www.richmondgear.com/rebate.pdf for details. ...Read More

Get UP TO $55 back after rebate on select Powertrax Products! Go to https://www.richmondgear.com/rebate.pdf for details. Valid on purchases made between 11/1/25 and 12/31/25. Claims must be submitted within 30 days of purchase. Allow 6-8 weeks for processing. Valid in USA and Canada. Limit two qualifying purchases per household or address. This offer cannot be combined with other discounts or offers. Rebate intended for end consumer only. Show Less

×

Differential Cover, GM 8.5 in., 10-bolt, Nodular Iron, Black Powdercoated, Cadillac, Chevrolet, GMC, Each

Part Number: YGA-29113

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Grizzly Locker, GM 10.5 in., 30 Spline, Each

Part Number: YGA-28015

4.22 out of 5 stars ( 9 )

Estimated Ship Date: Today

• Free Shipping

Gear, Ring and Pinion, 5.38:1 Ratio, GM, 12-Bolt Car, 4 Series, Set

Part Number: RMG-7900291

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

• Free Shipping

Gear, Ring and Pinion, 3.73:1 Ratio, GM, 12-Bolt Passenger Car, Set

Part Number: MGR-G888373

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping

Gear, Ring and Pinion, 3.55:1 Ratio, GM, 12-Bolt Passenger Car, Set

Part Number: MGR-G888355

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Today

• Free Shipping

Axles, Direct Fit, Rear, 1541H Alloy Steel, 30-Spline, Chevy, GMC, C/K Pickup, 8.875 in., Pair

Part Number: MSR-A30-65GMTK

4.64 out of 5 stars ( 11 )

Estimated Ship Date: Today

• Free Shipping

Differential Carrier, Open, GM 8.625 in., 30-Spline, Each

Part Number: MGR-GM8-6L

4.0 out of 5 stars ( 9 )

Estimated Ship Date: Today

• Free Shipping

Differential Cover, Aluminum, Black Powdercoated, GM, 12-Bolt 8.875 in., Passenger, Kit

Part Number: SUM-730513B

Not Yet Reviewed

Estimated Ship Date: Today

• 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: Today

• Free Shipping