TC Remanufacturing HD3688-6-2 Automatic Transmission Torque Converter

Overview of TC Remanufacturing HD3688-6-2 Torque Converter

The TC Remanufacturing HD3688-6-2 is an automatic transmission torque converter designed specifically for Ford heavy-duty trucks. Engineered to meet the demands of Ford E-250, E-350 Super Duty, F-250 Super Duty, and F-350 Super Duty models, this torque converter offers reliable performance and compatibility.

• Bolt Circle Diameter: 11.375 inches
• Converter Diameter: 12.750 inches
• Multi-disc lock-up converter type for improved efficiency
• Hub Type: Flats / stepped design
• Mounting Type: Studs
• Pilot Diameter: 1.375 inches
• Spline Count: 31
• Stall Speed Range: 1500-1700 RPM
• Converter Codes: 6mm, ww9
• Ring Gear: Not included

Detailed Product Description

This automatic transmission torque converter, part number HD3688-6-2, is built to fit Ford's heavy-duty truck lineup including the E-250, E-350 Super Duty, F-250 Super Duty, and F-350 Super Duty. The multi-disc lock-up design enhances transmission efficiency by reducing slippage and improving fuel economy under load. The 12.750-inch converter diameter and 11.375-inch bolt circle ensure precise fitment and compatibility with the specified Ford models. Featuring a flats/stepped hub type and stud mounting, this torque converter is engineered for secure installation and durability. The 31 spline count and 1.375-inch pilot diameter align with factory specifications to maintain proper drivetrain engagement. The stall speed range of 1500-1700 RPM is optimized for these heavy-duty applications, providing smooth power transfer and reliable performance.

Common Applications and Problem Resolution

• Replacement for worn or damaged torque converters in Ford E-250 and E-350 Super Duty transmissions
• Addresses issues with transmission slippage or overheating
• Resolves poor acceleration or shuddering during lock-up engagement
• Improves fuel efficiency by optimizing lock-up timing
• Restores proper stall speed for heavy-duty towing and hauling

Installation Notes and Tips

• Ensure compatibility with Ford E-250, E-350 Super Duty, F-250 Super Duty, and F-350 Super Duty models before installation
• Verify torque converter codes (6mm, ww9) match vehicle specifications
• Inspect transmission input shaft and seals for wear prior to installation
• Use proper torque specifications on studs during mounting
• Check stall speed requirements to match vehicle usage and engine setup

Quality Assurance and Warranty

TC Remanufacturing provides this torque converter with a focus on durability and performance consistency. Each unit undergoes rigorous testing to meet OEM standards for fit and function. While specific warranty details may vary, TC Remanufacturing typically offers coverage against defects in materials and workmanship to ensure customer confidence in the HD3688-6-2 torque converter.