BUICK Transmission & Drivetrain

Ring and Pinion Kit

Part Number: RMG-GM75355

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Automatic Transmission Rebuild Kit, TransKit, GM, TH375, TH400, Kit

Part Number: BMM-20229

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Automatic Shifter, Floor Mounted, Detent, 6.000 in. Straight Chrome Stick, 3/8-24 in., Brushed Mushroom Knob, 4L80E, Each

Part Number: LOK-FM4L80FM

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Transmission Pan, Deep, Aluminum, Natural, Finned, GM, TH400, Each

Part Number: HUP-HP2280

5.0 out of 5 stars ( 10 )

Estimated Ship Date: Today

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Clutch Kits, Street 450 Clutch Conversion Kits, 1.125 in. - 10-spline, Single Organic Disc, 11.000 in. Diameter, Buick, Chevy, Olds, Pontiac, Kit

Part Number: HAY-91-1004

2.33 out of 5 stars ( 3 )

Estimated Ship Date: Apr 8, 2026 if ordered today

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Ring and Pinion Gears, 3.73:1 Ratio, 27-spline, Standard Ring Gear Rotation, GM 7.5 in., GM 7.625 in., Set

Part Number: SPZ-36197

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 6, 2026 if ordered today

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Manual Shifter, Mastershift, Buick, Chevy, Oldsmobile, Pontiac, Each

Part Number: HUU-3667271

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Ring and Pinion Gears, 3.23:1 Ratio, 30-spline, Standard Ring Gear Rotation, GM 8.5/8.6 in., Set

Part Number: SPZ-36212

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Estimated Ship Date: Apr 3, 2026 if ordered today

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Automatic Shifter, Floor Mounted, Detent, 8.000 in. Single Bend Black Stick, 3/8-24 in., Black Mushroom Knob, 4L80E, Each

Part Number: LOK-FM4L80EXMB

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Automatic Shifter, Outlaw, Forward Shift Pattern, without Cover, Pistol Grip, GM/Ford/Mopar, Each

Part Number: TCI-616531

4.95 out of 5 stars ( 19 )

Estimated Ship Date: Today

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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: Today

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Differential Clutch, Steel Pack, Rear, Posi, GM, 8.875 in., Set

Part Number: YGA-16041

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Estimated Ship Date: Apr 17, 2026 if ordered today

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Gear, Ring and Pinion, 3.55:1 Ratio, GM, 8.2 in., B or P Axle, 10-Bolt, 3 Series, Set

Part Number: RMG-4900821

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Ring and Pinion Gears, 4.11:1 Ratio, 30-spline, Standard Rotation, GM 8.875 in. Passenger Car, Set

Part Number: SVL-2023899

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Tailshaft Housing, Aluminum, GM, TH400, Each

Part Number: TCI-226405

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Automatic Shifter, Floor Mounted, Detent, 10.000 in. Single Bend Chrome Stick, 3/8-24 in., Brushed Mushroom Knob, TH400, Each

Part Number: LOK-FM400DM

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Estimated Ship Date: Apr 2, 2026 if ordered today

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Axles, Direct Fit, C-Clip, Rear, 1541H Steel, 28-Spline, Buick, Chevy, Oldsmobile, Pontiac, 7.5 in., Pair

Part Number: MSR-A102801

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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SUPER KIT

Part Number: PIO-753024

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

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Gear, Ring and Pinion, 3.08:1 Ratio, GM, 8.875 in., 12-Bolt, Set

Part Number: MGR-GM12-308

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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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: Today

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Yukon cast yoke for GM 12P and 12T with a 1350 U/Joint size

Part Number: YGA-41068

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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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: Apr 20, 2026 if ordered today

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Gear, Ring and Pinion, 3.42:1 Ratio, 1.625 in. Pinion, 30 Spline, 8.875 in. Ring Gear, GM 8.875 in., Set

Part Number: YGA-24121

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Flywheel, Science Friction, Billet Steel, Buick, Each

Part Number: AWR-FWBU10001

5.0 out of 5 stars ( 1 )

Estimated Ship Date: May 18, 2026 if ordered today

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Differential Clutch, Steel Pack, Rear, Posi, GM, 8.875 in., Set

Part Number: YGA-16064

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Estimated Ship Date: Apr 20, 2026 if ordered today

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