BUICK ROADMASTER Transmission & Drivetrain

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: Monday 12/22/2025

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Gear, Ring and Pinion, 3.73:1 Ratio, GM, 7.5 in., Set

Part Number: MGR-GM75-373

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Automatic Transmission Pan, Stock, Aluminum, Polished, GM, 700R4, 4L60E, Kit

Part Number: TCI-378010

4.43 out of 5 stars ( 14 )

Estimated Ship Date: Monday 12/22/2025

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Flexplate Bolts, SCM-4141 Alloy Steel, 12--point, 7/16 in.- 20 RH, .688 in. length, Chevy, Ford, Set of 6

Part Number: PQX-1003902

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

Torque Converter, Holeshot, 1,900-2,000 rpm Stall Range, Chevy, 4L60E/700R4, Each

Part Number: BMM-70417

1.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/22/2025

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Gear, Ring and Pinion, 4.88:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-6901691

4.6 out of 5 stars ( 5 )

Estimated Ship Date: Monday 12/22/2025

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

Part Number: RMG-8310441

4.53 out of 5 stars ( 17 )

Estimated Ship Date: Monday 12/22/2025

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Torque Converters, Remanufactured, OEM Style, 1.750 in. Slotted Hub, 3 Pad Mount, 12.00 in. Diameter, 2,025 Stall, 30 Spline Input, Avanti, GM, Each

Part Number: CCV-TQBU18AH

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/22/2025

• Core Charge $75.00
• Free Shipping

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

Part Number: MGR-GM10-342

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/22/2025

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Yokes, GM 3RL/S44/Mechanics 3/American Axle 1344, 30-spline Inner, Cast Steel, for GM 8.5 in. or GM 9.5 in. Axle As the Pinion Yoke, Strap Style, Each

Part Number: MGR-MG3R-8500

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/22/2025

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Flexplate, Performance, External Balance, 168 Tooth, Chevy, 1986-97 Small Block, Each

Part Number: HAY-10-025

3.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 12/22/2025

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Transmission Dipstick, Braided Stainless Steel, Black, Black Handle, Firewall Mount, Chevy, 4L60, Each

Part Number: LOK-XTD-34L60FM

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/22/2025

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Gear, Ring and Pinion, 3.23:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-4900191

4.25 out of 5 stars ( 8 )

Estimated Ship Date: Monday 12/22/2025

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Transmission Dipstick, Braided Stainless Steel, Natural, Transmission Mount, 4L60E, Each

Part Number: LOK-TD-34L60ETM

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Monday 12/22/2025

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Ring and Pinion Installation Kit, EXCel, GM, 8.5 in., 10-Bolt, 30 Spline Pinion, Koyo Bearings, Kit

Part Number: RMG-XL-1021-1

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/22/2025

Differential Carrier Bearings, Standard Replacement, 1.625 in. Bore, AMC, GM, Mopar, Jeep, International, Studebaker, Hummer, Each

Part Number: TMK-LM501349

3.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 12/22/2025

Gear, Ring and Pinion, 3.73:1 Ratio, GM, 7.5in./7.625 in., 2 Series, Set

Part Number: MGR-G875373X

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 12/22/2025

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Transmission Bellhousing Spacer, Universal, Bellhousing to Block, Steel, Zinc Plated, 0.375 in Thick, Chevy, Ford Small Block, Each

Part Number: QTI-RM-6013

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Pilot Bearings and Bushing, Replacement, Clutch Pilot Bearing, Steel, 1.378 in. OD, 0.590 in. ID, Buick, International, Oldsmobile, Pontiac, Each

Part Number: NTL-7109

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

Torque Converter, Remanufactured, Stock Use, 30-spline Input, 10.625 in. Bolt Circle, 12.00 in. Diameter, Buick, Cadillac, Chevy, GMC, Pontiac, Each

Part Number: CCV-TQBU18A

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

• Core Charge $75.00
• Free Shipping

Differential, Eaton Detroit Locker, 30-Spline, GM, 8.5 in., Each

Part Number: ETN-187C148A

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Jan 14, 2026 if ordered today

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• Special Order

Ring and Pinion Gears, EXCel, GM 7.5/7.625 in., 3.90:1 Ratio, 27-spline, Standard, for 3.23 or Numerically Higher Ratio Carrier, Chevy, GMC, Olds, Set

Part Number: RMG-GM75390

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/22/2025

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

Part Number: RMG-GM85456

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/22/2025

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Universal Joint, Super Strength, 1344 Style, Greasable, Steel, Each

Part Number: MOG-235

4.34 out of 5 stars ( 44 )

Estimated Ship Date: Monday 12/22/2025

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: Monday 12/22/2025

• Free Shipping