Best Gm Torque Converters in 2026

Recommended replacement part for your GM vehicle’s original factory component

Offering the quality, reliability, and durability

Manufactured to GM OE specification for fit, form, and function

Package Include: 1Pc TCC Lock Up Converter Clutch Solenoid.

Interchange Part Numbers: 8654122, 8654124, 8654126, 8654125.

Fits 1982-Up TH700-R4 4L60 4L60E 4L65E TH200-4R Transmission.

✔️【PREFECT DESIGNED】Flexplate Adapter Spacer compatible with GM LS series Xtreme Duty Flexplate with a 4mm thick centerplate, to GM automatic transmission For 1998-2004 LS based engines using a TH350 or TH400 transmission.

✔️【STABLE & GOOD DUCTILITY】Crankshaft adapter has good ductility, conduction and thermal conductivity, and has strong ferromagnetic. Stable characteristics, high reliability. Perfect match for the original car.

✔️【EASY INSTALLATION】Ls Adapter sleeves allow you to bolt a GM automatic transmission to an engine or an older GM automatic transmission to an LS-series engine. These adapter sleeves insert into the crankshaft flange with no modifications, giving you the correct distance and pilot size.

【Compatible Models】Compatible with GM LS series Xtreme Duty Flexplate with 4mm thick center plate, suitable for GM automatic transmission with 1998-2004 LS engine using TH350 or TH400 transmission.

【High Quality Material】The aluminum alloy crankshaft adapter has good ductility, electrical conductivity and thermal conductivity, and has strong ferromagnetic properties. Stable characteristics and high reliability. Perfect match with the original car.

【Easy to Install】Crankshaft Adapters allow you to bolt GM automatic transmissions to the engine, or older GM automatic transmissions to LS series engines. Just plug in the rear of the crankshaft. If using a curved flex board, you will need this adapter spacer to give you the correct distance and guide dimensions.

PERFORMANCE FOR STREET AND TRACK USE for improved launch and acceleration

3500-3800 RPM STALL SPEED to match your engine and camshaft needs

IDEAL for small block applications up to 500 horsepower without nitrous or super/turbochargers

Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)

GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors

GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle

Allows automatic transmission to come to a stop while still in gear, and move forward when brakes are released

EC3 material maintains appropriate heat range to prevent overheating

Designed to help with noise reduction, vibration, and harshness when shifting

Recommended replacement part for your GM vehicle’s original factory component

Offering the quality, reliability, and durability

Manufactured to GM OE specification for fit, form, and function

Allows automatic transmission to come to a stop while still in gear, and move forward when brakes are released

EC3 material maintains appropriate heat range to prevent overheating

Designed to help with noise reduction, vibration, and harshness when shifting

Package Dimensions- 12.62Inches L X12.62Inches W X6.88Inches H

Allows automatic transmission to come to a stop while still in gear, and move forward when brakes are released

Country Of Origin- United States

3/4 Race series converters are built, tested, and proven to support up to 650 HP.

State of the art Spray Welding process is used in select areas. Spray Welding provides clean, strong and consistent fusion while also increasing strength through hardening from higher process temperature

Each converter is hand-built and inspected in every step of assembly to ensure top of the line quality

Package Dimensions: 36.83 H x 27.686 L x 35.56 W (centimeters)

Offering the quality, reliability, and durability

Package Weight: 15.513 kilograms

Allows automatic transmission to come to a stop while still in gear, and move forward when brakes are released

EC3 material maintains appropriate heat range to prevent overheating

Designed to help with noise reduction, vibration, and harshness when shifting

Allows automatic transmission to come to a stop while still in gear, and move forward when brakes are released

EC3 material maintains appropriate heat range to prevent overheating

Designed to help with noise reduction, vibration, and harshness when shifting