TC Remanufacturing GM14421 Automatic Transmission Torque Converter

Automatic Transmission Torque Converter

TC Remanufacturing GM14421 is a standard replacement automatic transmission torque converter built for GM 6T30, 6T35, 6T40, and 6T45 applications. It features a 24 spline count, lock-up design, low stall calibration, and a 10.870-inch converter diameter for direct-fit service on listed Buick and Chevrolet vehicles.

Key Features

• Part number: GM14421
• Automatic transmission torque converter, standard replacement grade
• Lock-up type: Yes
• Low stall converter for OE-style drivability
• 24 spline count with flats/step/flanged hub type
• 10.870-inch converter diameter
• Bolt circle: 9.250
• Mounting type: 3 pads stepped
• Mounting thread size: 10mm x 1.5
• Pilot diameter: 0.824; pilot length: 0.847
• Converter code: 24263354

Detailed Description

This TC Remanufacturing torque converter is built for vehicles using GM 6T30, 6T35, 6T40, and 6T45 transmissions. The GM14421 part number is a useful reference when sourcing a replacement torque converter for a Buick Encore, Chevrolet Trax, Chevrolet Malibu, Chevrolet Impala, Chevrolet Equinox, or Buick Verano with the correct 24 spline configuration. Its lock-up design and low stall specification support smooth engagement characteristics in everyday driving.

Compatible vehicle coverage includes Fits 2013-2019 Buick Encore, N/A; Fits 2018-2019 Chevrolet Equinox, N/A; Fits 2015-2019 Chevrolet Trax, N/A; Fits 2014-2018 Chevrolet Impala, N/A; Fits 2016-2018 Chevrolet Malibu, N/A; Fits 2008-2014 Chevrolet Malibu, N/A; and Fits 2012-2016 Buick Verano, N/A. Use the listed transmission codes and spline count to confirm application before ordering. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Torque converter shudder during lock-up operation
• Delayed or inconsistent engagement from a worn converter
• Transmission slip related to internal converter wear
• Excessive vibration or drivability issues under load
• Fluid contamination caused by converter failure

Installation Notes and Tips

Verify the transmission code, spline count, bolt circle, and mounting style before installation. Confirm the 24 spline count and 10mm x 1.5 mounting thread size match the original unit. Inspect the transmission cooler and lines for debris or contamination, and flush the system as needed before installing the replacement converter. Always follow the vehicle service procedure for proper converter seating and fluid fill.

Quality Assurance

TC Remanufacturing supplies remanufactured drivetrain components for service replacement use. GM14421 is specified as a standard replacement torque converter for the listed GM applications and is identified by converter code 24263354.