TC Remanufacturing DA25 Automatic Transmission Torque Converter

1989 Isuzu I-Mark Torque Converter

TC Remanufacturing DA25 is an automatic transmission torque converter for the 1989 Isuzu I-Mark. It is a lock-up converter with a 12.250-inch diameter, 13.300 bolt circle, and 24-spline hub configuration for the listed application.

Key Features

• Part number DA25 for the 1989 Isuzu I-Mark
• Lock-up torque converter design
• 12.250-inch converter diameter
• 13.300 bolt circle
• 24-spline count
• Milled flats hub type
• Mount plate with 6 holes and no threads
• 0.785 pilot diameter
• No ring gear
• Converter code reference: Some A20

Detailed Description

This TC Remanufacturing torque converter is built for the 1989 Isuzu I-Mark automatic transmission application. The DA25 uses a lock-up design to match the transmission’s intended operating characteristics, while the 12.250-inch diameter, 24-spline count, and milled flats hub help define the correct physical fitment for the vehicle. The mount plate uses 6 holes with no threads, and the 0.785 pilot diameter supports proper alignment during installation.

For buyers searching for a 1989 Isuzu I-Mark torque converter, automatic transmission torque converter DA25, or a lock-up converter for Isuzu I-Mark, this part provides the listed dimensions and mounting style needed for the application.

Common Replacement Reasons

• Transmission shudder or slip during lock-up operation
• Incorrect converter fitment after transmission service
• Vibration or engagement issues related to worn internal converter components
• Need for a replacement torque converter with the correct spline and pilot dimensions

Installation Notes and Tips

Verify the transmission code, converter code, spline count, pilot diameter, and mounting pattern before installation. Confirm that the 1989 Isuzu I-Mark uses the same lock-up converter configuration and that the mount plate, hub style, and bolt circle match the original unit. Inspect the transmission fluid, cooler lines, and flexplate condition during replacement to help avoid repeat failures.

Quality Assurance

TC Remanufacturing supplies remanufactured drivetrain components for transmission service applications. Part number DA25 is cataloged for the listed 1989 Isuzu I-Mark fitment and should be matched to the vehicle’s transmission specifications before installation.