Availability
1981 CHEVROLET K20 Differential & Rear-End Components
Ring and Pinion Installation Kit, Basic, GM 8.5 in., Front/Rear, Kit
Part Number: MGR-R10RET
Estimated Ship Date: Mar 13, 2026 if ordered today
Estimated Ship Date: Mar 13, 2026 if ordered today
Ring and Pinion Installation Kit, Basic, GM 8.5 in., Front/Rear, Kit
Part Number: MGR-R10RT
Estimated Ship Date: Mar 13, 2026 if ordered today
Estimated Ship Date: Mar 13, 2026 if ordered today
Ring and Pinion Installation Kit, Basic, GM 8.875 in. 12-Bolt, Rear, Kit
Part Number: MGR-R12RT
Not Yet Reviewed
Estimated Ship Date: Mar 13, 2026 if ordered today
Estimated Ship Date: Mar 13, 2026 if ordered today
Ring and Pinion Bearing Kit
Part Number: MGR-GM105IK
Not Yet Reviewed
Estimated Ship Date: Mar 13, 2026 if ordered today
Estimated Ship Date: Mar 13, 2026 if ordered today
Ring and Pinion Installation Kit, GM, 8.875 in., Passenger Car, Kit
Part Number: MGR-GM12IK
Not Yet Reviewed
Estimated Ship Date: Mar 13, 2026 if ordered today
Estimated Ship Date: Mar 13, 2026 if ordered today
Axle Shafts, Ten Factory, Front Left Inner , 4340 Chromoly, Cut to Fit, 22.00 Length, Dana 44, Each
Part Number: MGR-MG20440
Not Yet Reviewed
Estimated Ship Date: Mar 13, 2026 if ordered today
Estimated Ship Date: Mar 13, 2026 if ordered today
Axle Shaft; 22" length, Blank
Part Number: MGR-MG20600
Not Yet Reviewed
Estimated Ship Date: Mar 13, 2026 if ordered today
Estimated Ship Date: Mar 13, 2026 if ordered today
Axle Shaft; 39" length, Blank
Part Number: MGR-MG20601
Not Yet Reviewed
Estimated Ship Date: Mar 13, 2026 if ordered today
Estimated Ship Date: Mar 13, 2026 if ordered today
Axle Shaft, Direct Fit, 4340 Chromoly, 35-Spline, 12.000 in. Length, Chevy, GMC, Each
Part Number: MGR-MG20650B
Not Yet Reviewed
Estimated Ship Date: Mar 13, 2026 if ordered today
Estimated Ship Date: Mar 13, 2026 if ordered today
Axle Shaft, Direct Fit, 4340 Chromoly, 30-Spline, 19.150 in. Length, Chevy, GMC, Each
Part Number: MGR-MG20132B
Not Yet Reviewed
Estimated Ship Date: Mar 13, 2026 if ordered today
Estimated Ship Date: Mar 13, 2026 if ordered today
Lockwasher, LOCKWASHER 3/8" SPLIT ZINC
Part Number: MGR-RGB5-LW
Not Yet Reviewed
Estimated Ship Date: Mar 13, 2026 if ordered today
Estimated Ship Date: Mar 13, 2026 if ordered today
Ring & Pinion Gear, 4.56 Ratio, GM, 10.5 in., 14-Bolt, Set
Part Number: YGA-24136
Estimated Ship Date: Mar 25, 2026 if ordered today
Estimated Ship Date: Mar 25, 2026 if ordered today
Ring Gear Fasteners, Replacement Bolt, Hex Head, Steel, Black Oxide, 1/2-20 in. RH, GM, 10.5 in., 14 Bolt, 4.56 and Up Carrier, Each
Part Number: MGR-331421
Not Yet Reviewed
Estimated Ship Date: Mar 13, 2026 if ordered today
Estimated Ship Date: Mar 13, 2026 if ordered today
CROSS SHAFT 9.5 GM 14 BLT
Part Number: MGR-14012700
Not Yet Reviewed
Estimated Ship Date: Mar 13, 2026 if ordered today
Estimated Ship Date: Mar 13, 2026 if ordered today
Pin, PIN, STOP, PAB, 1038-421
Part Number: PWT-1038421PAB
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
Spring, SPRING, OUTER, ZAG, 1038-461
Part Number: PWT-1038461ZAG
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
DRIVER
Part Number: PWT-424005DFR2
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
COUPLER
Part Number: PWT-5201001CJR
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
COUPLER
Part Number: PWT-5201004CJY
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
COUPLER
Part Number: PWT-5201007CJU
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
COUPLER
Part Number: PWT-5201012CGM
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
Differential Spool Bearing Kit; Fits GM 8.5 in. 10 Bolt; Incl. Bearings/Bearing Races
Part Number: RMG-29-0013-1
Estimated Ship Date: Mar 13, 2026 if ordered today
Estimated Ship Date: Mar 13, 2026 if ordered today
Spool, Full Size, Steel, 28-Spline, 10-Bolt, GM 8.5 in., Each
Part Number: RMG-81-1028-1
Estimated Ship Date: Mar 13, 2026 if ordered today
Estimated Ship Date: Mar 13, 2026 if ordered today
Ring and Pinion Installation Kit, GM, 10.5 in., Kit
Part Number: RMG-83-1063-B
Not Yet Reviewed
Estimated Ship Date: Mar 13, 2026 if ordered today
Estimated Ship Date: Mar 13, 2026 if ordered today
Differential Pinion Shaft, Differential Pinion Shaft
Part Number: PWT-3991018RDY
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
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