TC Remanufacturing HD3686-6-2 Automatic Transmission Torque Converter

OE-Style Torque Converter for Ford Trucks and Vans

TC Remanufacturing HD3686-6-2 is an automatic transmission torque converter built for Ford applications that use a 31-spline, multi-disc lock-up design. It is a direct-fit replacement for a wide range of Ford E-Series vans, F-Series trucks, and Excursion models with the listed converter codes.

Key Features

• Part number: HD3686-6-2
• 12.750-inch converter diameter
• Multi-disc lock-up converter type
• Multi clutch design for controlled engagement
• 1500-1700 stall speed
• 11.375 bolt circle
• 1.375 pilot diameter
• 31 spline count
• Milled flats hub type
• Stud mounting type
• No ring gear
• Converter codes: AC, AD, AF, WW, XX, ZZ

Detailed Description

This TC Remanufacturing torque converter is specified for Ford automatic transmissions that require the HD3686-6-2 configuration. It is built with a multi-disc lock-up clutch, 12.750-inch diameter, and 1500-1700 stall range to match the transmission and engine calibration used in Ford Excursion, Ford F-150, Ford F-250 Super Duty, Ford F-350 Super Duty, and Ford E-Series applications. The milled-flats hub, 31-spline interface, 11.375 bolt circle, and 1.375 pilot diameter are important fitment details for correct installation and converter alignment.

Compatible With 2000-2005 Ford Excursion, 2003-2004 Ford E-350 Club Wagon, 1999-2004 Ford E-350 Super Duty, 1999-2004 Ford F-250 Super Duty, 1999-2004 Ford F-350 Super Duty, and 2000-2003 Ford F-150. It also fits 2001-2002 Ford E-350 Econoline Club Wagon, 1996-1999 Ford E-350 Econoline Club Wagon, 2000 Ford E-350 Econoline Club Wagon with O.E. replacement note, 1995 Ford E-350 Econoline Club Wagon with O.E. replacement note, 1995-1998 Ford E-350 Econoline, 1997 Ford F-250 HD, 1995-1997 Ford F-350, 1989-1996 Ford F-250, and 1990-1994 Ford E-350 Econoline with O.E. replacement note.

What It Helps Address

• Shudder or slip during torque converter clutch lock-up
• Incorrect stall speed after transmission service
• Converter code mismatch on Ford automatic transmission rebuilds
• Vibration or engagement issues related to worn internal converter components
• Fitment problems when replacing an OE-style Ford torque converter

Installation Notes and Tips

Verify the converter code, spline count, pilot diameter, bolt circle, and hub style before installation. Confirm the transmission build and vehicle application against the listed Ford Excursion, F-150, F-250, F-350, and E-Series fitments. Always inspect the flexplate, front pump, and transmission seals during replacement, and follow the transmission manufacturer’s installation procedures for proper converter seating and fluid fill.

Quality Assurance

TC Remanufacturing supplies remanufactured drivetrain components for transmission service work. This torque converter is built around the listed OE-style dimensions and application codes to support accurate replacement on the specified Ford platforms.