ACDelco Reverse Input Drum for GM TH700-R4 4L60E No Check Ball 24245624

Reverse Input Drum For GM TH700-R4 / 4L60 / 4L60E Automatic Transmissions

Replacement reverse input drum for applicable GM TH700-R4, 4L60, and 4L60E automatic transmission rebuild projects. This component uses OEM reference numbers 24245624 and 8681295 for identification and interchange comparison.

Part Details

• Part Type: Reverse input drum / band drum

• Transmission Family: GM TH700-R4, 4L60, 4L60E

• Configuration: No check ball

• OEM Reference Numbers: 24245624, 8681295

• Use: Internal automatic transmission repair or rebuild

Application And Fitment Guidance

This reverse input drum provides the band-running surface and supports the reverse input clutch assembly in applicable GM transmissions. Replace the drum when inspection finds scoring, cracking, heat damage, excessive wear, or other damage that could affect the rebuild.

Confirm the original drum configuration before ordering. Reverse input drums used across the TH700-R4 and 4L60E family can differ by check-ball design, feed-hole configuration, and compatibility with associated pump or stator components. Match the original part, transmission model, and internal configuration rather than relying on vehicle make, model, or year alone.

Installation Planning

Professional installation or experienced transmission-rebuild knowledge is recommended. Inspect the related band, clutches, steels, piston components, bushings, seals, pump assembly, and other internal transmission parts before reassembly.

Use the manufacturer-specified transmission fluid when completing service. If compatible with the application and fluid type, Lubegard ATF Protectant can be used according to its product directions as part of a complete transmission service.