TC Remanufacturing B85JMBX Automatic Transmission Torque Converter

OE Replacement Torque Converter for GM Applications

The TC Remanufacturing B85JMBX is an automatic transmission torque converter built for GM trucks, SUVs, and performance cars using the listed OE-style applications. It features a 12.500-inch diameter, lock-up design, and carbon woven single-clutch friction for controlled coupling in everyday driving and towing use.

Use this B85JMBX torque converter when you need a direct-fit replacement for vehicles such as the Chevrolet Silverado 1500, GMC Sierra 1500, and Chevrolet Tahoe with the matching transmission setup.

Key Features

• Part number: B85JMBX
• Automatic transmission torque converter
• Lock-up converter type
• 12.500-inch converter diameter
• 1400-1600 stall speed range
• Carbon woven friction single clutch
• 11.000-inch bolt circle
• 36-spline count
• Slotted / stepped hub type
• Rectangular 2-hole mounting pad shape with 3 pads
• 10mm x 1.5 mounting thread size
• 1.701-inch pilot diameter and 1.000-inch pilot length
• Converter codes: 24236469, 24243222, 24274215, JMBX non flanged hub, purple sticker

Detailed Description

The TC Remanufacturing B85JMBX is an OE replacement automatic transmission torque converter for a wide range of GM fitments, including Chevrolet Express 2500 and 3500, Silverado 2500 HD and 3500 HD, Tahoe, Suburban, Camaro, Caprice, SS, and GMC Savana, Sierra, Yukon, and Yukon XL models. It is also listed for Cadillac Escalade, Escalade ESV, Escalade EXT, STS, Hummer H2, Pontiac G8, and related applications. The lock-up design and carbon woven friction material support consistent torque transfer, while the 1400-1600 stall range matches the listed factory-style application requirements. This part number, B85JMBX, is identified by the OE-related converter codes shown above and is intended for vehicles using the matching transmission and hub configuration.

What It Is Used For

• Replacing a worn or failing torque converter in GM automatic transmissions
• Restoring lock-up clutch operation and drivability
• Addressing shudder, slip, or delayed engagement tied to converter wear
• Correcting stall-speed mismatch after transmission service
• Returning OE-style fitment on listed Chevrolet, GMC, Cadillac, Hummer, and Pontiac applications

Installation Notes and Tips

Verify the converter codes, hub style, spline count, bolt circle, and mounting pad configuration before installation. Confirm transmission compatibility and match the application to the vehicle’s year, make, and model exactly as listed. Inspect the transmission cooler and lines during replacement to reduce the chance of contamination affecting the new converter. For fitment examples, this part fits 2016-2017 Chevrolet Silverado 1500, 2007-2020 GMC Sierra 1500, and 2009-2020 Chevrolet Tahoe, N/A.

Quality Assurance

TC Remanufacturing supplies remanufactured drivetrain components for OE-style replacement use. This part is identified by the listed converter codes and application data for accurate selection on the supported GM vehicles.