BUICK 3.7L/225 Transmission & Drivetrain - Free Shipping on Orders Over $109 at Summit Racing

B&M Tork Master 2,300-2,500 Stall Torque Converter 20404

Torque Converter, Tork Master, 2,300-2,500 rpm Stall Range, Chevy, THM350/THM400, Each

Part Number: BMM-20404

4.4 out of 5 stars ( 35 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

B&M Tork Master 1,900-2,100 Stall Torque Converter 20400

Torque Converter, Tork Master, 1,900-2,100 rpm Stall Range, Chevy, THM350/THM400, Each

Part Number: BMM-20400

4.32 out of 5 stars ( 77 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

B&M Holeshot 1,800-2,200 Stall Torque Converter 20416

Torque Converter, Holeshot, 1,800-2,200 rpm Stall Range, Chevy, THM350/THM400, Each

Part Number: BMM-20416

4.35 out of 5 stars ( 17 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Hurst Competition/Plus Installation Kits 3733163

Shifter Installation Kit, Competition Plus, Muncie, M-21, Buick, Chevy, Oldsmobile, Pontiac, Kit

Part Number: HUU-3733163

4.35 out of 5 stars ( 43 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Richmond Gear Ring and Pinion Sets 49-0039-1 GM 8.875 in. (12-bolt) passenger car 3.73 Gears

Ring and Pinion Gears, 3.73:1 Ratio, GM, 12-Bolt Passenger Car, 3 Series, Set

Part Number: RMG-4900391

4.82 out of 5 stars ( 17 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

McLeod 1300 Series Hydraulic Throwout Bearings 1300

Throwout Bearing, Hydraulic, Muncie Four Speed, Each

Part Number: MCL-1300

3.75 out of 5 stars ( 8 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Hurst Indy 3-Speed Shifters 5010002

Manual Shifter, Indy 3-Speed, GM/Ford/Mopar, Each

Part Number: HUU-5010002

4.19 out of 5 stars ( 21 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Richmond Gear Ring and Pinion Sets 49-0094-1 GM 8.875 in. (12-bolt) passenger car 3.08 Gears

Gear, Ring and Pinion, 3.08:1 Ratio, GM, 12-Bolt Car, 3 Series, Set

Part Number: RMG-4900941

4.36 out of 5 stars ( 11 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Hurst Street Super Shifter Installation Kits 3738616

Shifter Installation Kit, Street Super Shifter, Buick, Chevy, Oldsmobile, Pontiac, Kit

Part Number: HUU-3738616

4.3 out of 5 stars ( 10 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Richmond Gear Ring and Pinion Sets 49-0096-1 GM 8.875 in. (12-bolt) passenger car 3.73 Gears

Gear, Ring and Pinion, 3.73:1 Ratio, GM, 12-Bolt Car, Set

Part Number: RMG-4900961

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Richmond Gear Ring and Pinion Sets 49-0113-1 GM 8.875 in. (12-bolt) passenger car 3.42 Gears

Gear, Ring and Pinion, 3.42:1 Ratio, GM, 12-Bolt Car, 3 Series, Set

Part Number: RMG-4901131

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Powertrax Lock-Right Lockers GM 8.875 Inch (12-bolt), Car/Truck 1910-LR

Differential, Lock-Right, Locker, 30-Spline, GM, 12-Bolt, Car/Truck, Each

Part Number: PWT-1910-LR

4.07 out of 5 stars ( 15 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Richmond Gear Ring and Pinion Sets 49-0095-1 GM 8.875 in. (12-bolt) passenger car 3.55 Gears

Gear, Ring and Pinion, 3.55:1 Ratio, GM, 12-Bolt Car, 3 Series, Set

Part Number: RMG-4900951

4.6 out of 5 stars ( 10 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Motive Gear Performance Ring and Pinion Sets BP882373 GM 8.2 in. BOP axle 3.73 Gears

Gear, Ring and Pinion, 3.73:1 Ratio, GM, 8.2 in., Buick, Pontiac, Set

Part Number: MGR-BP882373

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

American Powertrain Hydramax Master Cylinder Kits HMGM-30001G

Clutch Master Cylinder, Hydramax, Cast Aluminum, Black, Buick, Chevy, GMC, Oldsmobile, Pontiac, Kit

Part Number: AWR-HMGM30001SR

2.88 out of 5 stars ( 8 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Motive Gear Performance Ring and Pinion Sets BP882355 GM 8.2 in. BOP axle 3.55 Gears

Gear, Ring and Pinion, 3.55:1 Ratio, GM, 8.2 in., Buick, Pontiac, Set.

Part Number: MGR-BP882355

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Yukon Gear & Axle Ring and Pinion Sets YG GMBOP-336 GM 8.2 in. BOP axle 3.36 Gears

Ring & Pinion Gear, 3.36 Ratio, GM, 8.2 in. BOP, Set

Part Number: YGA-24503

4.57 out of 5 stars ( 7 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Hays Classic Conversion Clutch Kits 83-1102

Clutch Kit, 5/6-Speed Conversion, Organic, 1 .125 in.-26-Spline, 11 in. Diameter Disc, Buick, Checker, Chevy, GMC, Pontiac, Oldsmobile, Kit

Part Number: HAY-83-1102

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Yukon Gear & Axle Dura Grip Positraction Carriers GM 8.2 Inch, BOP axle YDGGM8.2BOP-3-28-1

Dura Grip Positraction Carrier, Traction-Loc, GM 8.2 in. BOP, 28 Spline, 3.31 Up Ratio, Each

Part Number: YGA-26024

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Sep 8, 2025 if ordered today

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Estimated Ship Date: Sep 8, 2025 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Auburn Gear Grip-N-Loc 28 Spline Differential GM 8.2 Inch, BOP axle 546099

Not Yet Reviewed

Estimated Ship Date: Monday 8/4/2025

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Richmond Gear Ring and Pinion Sets 69-0304-1 GM 8.875 in. (12-bolt) passenger car 4.10 Gears

Gear, Ring and Pinion, 4.10:1 Ratio, GM, 12-Bolt Car, 3 Series, Set

Part Number: RMG-6903041

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Hays Street 450 Clutch Conversion Kits 91-1002

Clutch Kits, Street 450 Clutch Conversion Kits, 1.125 in. - 10-spline, Single Organic Disc, 10.500 in. Diameter, Buick, Chevy, Olds, Pontiac, Kit

Part Number: HAY-91-1002

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Motive Gear Performance Ring and Pinion Sets G882373 GM 8.2 in. 3.73 Gears

Gear, Ring and Pinion, 3.73:1 Ratio, GM, 8.2 in., Set

Part Number: MGR-G882373

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Motive Gear Performance Ring and Pinion Sets BP882411 GM 8.2 in. BOP axle 4.11 Gears

Ring and Pinion Gears, 4.11:1 Ratio, Standard Rotation, 8.20 in. Diameter, GM, BOP, Set

Part Number: MGR-BP882411

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Motive Gear Performance Ring and Pinion Sets G888373 GM 8.875 in. (12-bolt) passenger car 3.73 Gears

Gear, Ring and Pinion, 3.73:1 Ratio, GM, 12-Bolt Passenger Car, Set

Part Number: MGR-G888373

Not Yet Reviewed

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

Richmond Gear Ring and Pinion Sets 69-0033-1 GM 8.875 in. (12-bolt) passenger car 4.88 Gears

Gear, Ring and Pinion, 4.88:1 Ratio, GM, 12-Bolt Car, 4 Series, Set

Part Number: RMG-6900331

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025