TC Remanufacturing HD1211 Automatic Transmission Torque Converter

Overview of TC Remanufacturing HD1211 Torque Converter

The TC Remanufacturing HD1211 automatic transmission torque converter is engineered for heavy-duty applications in Chevrolet, GMC, and Hummer vehicles. Designed to meet specific fitment requirements, this torque converter supports reliable power transfer and improved transmission performance.

• Compatible with Chevrolet Silverado 2500 HD, 3500 HD, Sierra 2500 HD, 3500 HD, and Hummer H1 models
• Lock-up converter type with a 13.5-inch diameter for efficient torque transfer
• Heavy-duty construction featuring a billet steel cover and milled flats hub
• Mounting thread size of 10mm x 1.5mm with 6-pad mounting type for secure installation
• Stall speed range between 1900-2100 RPM optimized for HD applications

Technical Specifications and Features

The HD1211 torque converter from TC Remanufacturing is built with an 11.5-inch bolt circle and a 1.703-inch pilot diameter, ensuring precise fitment in compatible transmissions. It features a 25-spline count and does not include a ring gear, which is typical for this application. The lock-up design improves fuel efficiency and reduces heat generation during operation. The billet steel cover enhances durability under heavy loads, while the milled flats hub provides a secure connection to the transmission input shaft. This torque converter is designed for use with converter codes 211, 29530318, 29538348, 29538529, 29541293, 29543003, and 29543017.

Applications and Problem Solving

This torque converter is specifically compatible with Chevrolet Silverado 2500 HD, Silverado 3500 HD, Sierra 2500 HD, Sierra 3500 HD, and Hummer H1 models. It addresses several common transmission issues including:

• Excessive slippage during acceleration
• Overheating of the transmission fluid
• Delayed or harsh lock-up engagement
• Reduced fuel efficiency due to inefficient torque transfer
• Premature wear of transmission components due to inadequate torque converter design

Installation Notes and Tips

When installing the HD1211 torque converter, ensure the mounting thread size of 10mm x 1.5mm and 6-pad mounting type are compatible with the transmission housing. Proper alignment of the 25-spline hub and pilot diameter of 1.703 inches is critical for smooth operation. It is recommended to verify converter codes to confirm compatibility. Use appropriate transmission fluid and follow manufacturer torque specifications during installation.

Quality Assurance and Warranty

TC Remanufacturing provides this HD1211 torque converter with a focus on durability and performance for heavy-duty applications. The billet steel cover and heavy-duty construction contribute to extended service life. Warranty details should be confirmed with the manufacturer or distributor, ensuring coverage for defects in materials and workmanship under normal use.