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

Ring and Pinion Gears and Installation Kit, 12P 8.875" GM 3.73 REAR R&P GEAR/ INSTALL KIT PACKAGE with AK 1563 AXLE BRGS (2.25" OD)

Part Number: YGA-12607

Not Yet Reviewed

Estimated Ship Date: Jan 9, 2026 if ordered today

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Axle Shafts, Rear Axle Conversion, C-clip Type, Steel, GM 8.875 in. Truck, Chevy, Pair

Part Number: CLP-70RAC-5

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Estimated Ship Date: Tomorrow

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Differential Carrier Cases, GM 8.5 in., 28/30 Spline, 2.73 and Up Ratio, Each

Part Number: YGA-20083

4.6 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

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Differential Carrier, Grizzly Locker, Chromium Alloy Steel, 30-spline, Rear, GM 8.5 in., GM 8.6 in., Each

Part Number: YGA-28035

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Jan 9, 2026 if ordered today

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Differential, Lock-Right, Locker, 35-Spline, Dana 60, Each

Part Number: PWT-2620-LR

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Jan 27, 2026 if ordered today

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• Mfr. Rebate

$35.00 Mail-In Rebate

Price after Manufacturer Rebate: $422.99

Rebate Expires: 12/31/2025

Get $35 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

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Gear, Ring and Pinion, EXCel, 3.08:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, Set

Part Number: RMG-GM85308

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Estimated Ship Date: Tomorrow

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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: Tomorrow

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Axle Shaft, Front, 4340 Chromoly, 19 Spline, 9.940 in. Length, Dana 44, GM, Chevy, GMC, Jeep, Each

Part Number: YGA-21355

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Spider Gear Kit, Open Differential, Dana 44, 30 Spline, Kit

Part Number: YGA-16077

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

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Pinion Bearing, 1.187 in. Inside Diameter, Each

Part Number: TMK-M86649

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

Gear, Ring and Pinion, 3.23:1 Ratio, 1.625 in. Pinion, 30 Spline, 8.500 in. Ring Gear, GM 8.5/8.6 in., Set

Part Number: YGA-24493

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Gear, Ring and Pinion, 5.13:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-6901711

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Axle Shaft, 30-Spline, 30.063 in. Length, Chevy, Pontiac, 8.875 in., Rear, Each

Part Number: RMG-92-25122

4.89 out of 5 stars ( 9 )

Estimated Ship Date: Jan 9, 2026 if ordered today

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Gear, Ring and Pinion, EXCel, 3.73:1 Ratio, GM, 7.5/7.625 in., 10-Bolt, Set

Part Number: RMG-GM75373TK

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Differential Cover, Steel, Chrome, GM, 8.5 in., 10-Bolt, Kit

Part Number: MRG-9891

4.17 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

Differential, No-Slip Traction System, 30-Spline, GM 10.5 in., Each

Part Number: PWT-92-0705-3000

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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• Mfr. Rebate

$40.00 Mail-In Rebate

Price after Manufacturer Rebate: $340.66

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

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Ring and Pinion Gears, 3.73:1 Ratio, 26-spline, Standard Ring Gear Rotation, Dana 44, Set

Part Number: SPZ-36040

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Differential Cover Bolts, Steel, Black, Hex, Each

Part Number: SDH-34279

Not Yet Reviewed

Estimated Ship Date: Tomorrow

Ring and Pinion Gears, 3.08:1 Ratio, GM 8.20 in., Set

Part Number: YGA-24148

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Jan 8, 2026 if ordered today

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Ring and Pinion Gears, 4.56:1 Ratio, 26-spline, Standard Ring Gear Rotation, Dana 44, Set

Part Number: SPZ-36045

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Estimated Ship Date: Tomorrow

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Differential Pinion Bearing, 1.375 in. Inside Diameter, Each

Part Number: TMK-HM88649

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

Differential Pinion Bearing Kit, GM 8.875 in. Truck, Koyo Bearings, Chevy, GMC, Kit

Part Number: MGR-R12RPK

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Estimated Ship Date: Tomorrow

Gear, Ring and Pinion, 3.54:1 Ratio, 1.375 in. Pinion, 26 Spline, 8.500 in. Ring Gear, Dana 44, Set

Part Number: YGA-24030

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Estimated Ship Date: Tomorrow

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Differential Carrier Rebuild Kits and Spider Gears, GM 8.875 in. (12-bolt) Car/Truck, Side Gears, Rear, Limited Slip, Eaton, Posi, 30-spline, Kit

Part Number: SVL-2023882

4.0 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

Axle Shaft, 31.281 in. Overall Length, 6 x 5.5 Lug Pattern, 30 Spline, GM

Part Number: MGR-14071750

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 30, 2026 if ordered today

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