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

Differential Carrier Rebuild Kits and Spider Gears, Spider Gear Sets, GM 8.875 in. (12-bolt), Car/Truck, 30-spline, Buick, Chevy, GMC, Pontiac, Kit

Part Number: SPZ-39021

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Axles, Replacement, Driver Side, Passenger Side, Rear, Chevy, GMC, 8.875 in., Pair

Part Number: MSR-A30-70GMT4

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Gear, Ring and Pinion, 4.10:1 Ratio, GM, 7.5 in./7.625 in., 10-Bolt, 3 Series, Set

Part Number: RMG-6903221

4.0 out of 5 stars ( 7 )

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Differential Carrier Rebuild Kits and Spider Gears, GM 8.5 in., Side Gears, 28-spline, 10-bolt, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, Kit

Part Number: SPZ-39026

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Differential, Posi Performance, Limited Slip, 30-Spline, 3.73 Gear Ratios, GM, 12-Bolt, Each

Part Number: HUU-02-125

5.0 out of 5 stars ( 1 )

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Gear, Ring and Pinion, 2.73:1 Ratio, GM 8.5 in., Set

Part Number: RNB-697-812

4.0 out of 5 stars ( 1 )

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Gear, Ring and Pinion, 2.73:1 Ratio, GM, 8.5/8.6 in., Set

Part Number: MGR-GM10-273

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Ring and Pinion Kit

Part Number: RMG-GM75308

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Ring and Pinion Gears, 3.73:1 Ratio, 30-spline, Standard Ring Gear Rotation, GM 8.875 in. Passenger Car, Set

Part Number: SPZ-36167

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Axle Shaft, Dana 44, 30 Inner Spline, 36.130 in. Length, Front Driver Side, GM, Each

Part Number: SDH-27902-2X

5.0 out of 5 stars ( 1 )

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

Part Number: MGR-GM10-456

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Dec 29, 2025 if ordered today

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Differential, Grip Pro Traction System, 30-Spline, GM 8.875 in. 12-Bolt Truck, Each

Part Number: PWT-GT248730

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 29, 2025 if ordered today

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• Mfr. Rebate

$40.00 Mail-In Rebate

Price after Manufacturer Rebate: $896.99

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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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: Today

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Axle Shaft, 30-Spline, 6 x 5.50 in. Bolt Circle, 30.75 in. Length, Chevy, GMC, Rear, Each

Part Number: YGA-21284

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Ring and Pinion Gears, Ring and Pinion Gear with Installation Kits, Dana 44, 3.54:1 Ratio, 26-spline, Standard, Dana 44, Chevy, Dodge, Ford, GMC, Kit

Part Number: SDH-22856-5X

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 16, 2025 if ordered today

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Axle Shaft, OEM Replacement, 30-Spline, 31.813 in. Length, Chevy, GMC, 8.6 in., Rear, Each

Part Number: RMG-92-25130

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Ring and Pinion, GM 10.5 in., 5.38:1 Ratio, Standard Rotation, Requires a 4.10:1 Ratio Carrier Set

Part Number: MGR-GM105-538X

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Differential, Lock-Right, Open Case, Locker, 35-Spline, Dana 80, Each

Part Number: PWT-2810-LR

3.6 out of 5 stars ( 5 )

Estimated Ship Date: Jan 27, 2026 if ordered today

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• Mfr. Rebate

$35.00 Mail-In Rebate

Price after Manufacturer Rebate: $566.99

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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Pinion Bearing, 1.437 in. i.d., BMW, Buick, Cadillac, Chevy, GMC, Chrysler, Dodge, Mercedes-Benz, Volvo, Each

Part Number: TMK-HM89449

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Ring and Pinion Complete Kits, 3.07:1 Ratio, 26-spline, Standard Rotation, Dana 44, Chevy, Dodge, Ford, GMC, International, Isuzu, Jaguar, Jeep, Kit

Part Number: SDH-706017-1X

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Spider Gears, Side Gears, Cross Shaft Pin, Yukon Dura Grip Carrier Style, Rear, GM 8.875 in., 30 Spline, Kit

Part Number: YGA-16039

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Estimated Ship Date: Jan 8, 2026 if ordered today

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Ring and Pinion Gears, EXCel, 3.73:1 Ratio, 30-spline, Standard Rotation, GM 10.5 in., Chevy, GMC, Rear, Set

Part Number: RMG-GM105373

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Zip Locker, Air Locker, Dana 60/61, 35 Spline, 4.10 Down Ratio, Each

Part Number: YGA-34022

Not Yet Reviewed

Estimated Ship Date: Jan 8, 2026 if ordered today

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Ring and Pinion Gears, 5.38:1 Ratio, 26-spline, Standard Ring Gear Rotation, Dana 44, Set

Part Number: SPZ-36053

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Gear, Ring and Pinion, 4.33:1 Ratio, GM, 12-Bolt Car, 4 Series, Set

Part Number: RMG-79-0074-1

3.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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