Harness Pigtail

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

Part Type

Transmission Wiring Harness

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Reference Information

Transmission Harness, Replacement, 20-Pin Pigtail, GM Automatic Transmission, Gray Connector, 12 in. Wire Leads, Butt-Style Connectors, Each

Fleece Performance GM Automatic transmission 20-pin pigtails feature 12 in. leads labeled with the pin positions to aid in installation and they include 20 heat-sealable butt-style connectors. These Fleece replacements are produced in-house with 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.