Fleece Performance · New
Fleece Performance GM Automatic Transmission 20-Pin Pigtail
MPN FPE-HAR-GM-AT-20-PT · Store SKU fpeFPE-HAR-GM-AT-20-PT
Supplier stock checked 11/7/2026, 10:42:21 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
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Product details
Our replacement GM Automatic Transmission 20-Pin pigtail features 12" leads that are labeled with the pin positions to aid in installation. Includes 20 heat-sealable butt-style connectors. Produced in-house, our manufacturing process includes fully automated wire cutting and terminal crimping to ensure you get the highest quality replacement parts you need to get your truck back on the road quickly. Replaces discontinued GM part number 12126459 and AC Delco PT729 Application Notes: Fits: Allison 1000/2000, 4L60E, 4L65E, 4L70E, 4L80E, 4L85E, 4T45E, 4T65E, 4T80E GM Automatic Transmission 20-Pin Pigtail
Manufacturer fitment & guides
Check FPE-HAR-GM-AT-20-PT against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y