{"product_id":"fleece-performance-engineering-internal-20-pin-wire-harness-connector-seal-black-1-pack-includes-o-ring-connector","title":"Fleece Performance Engineering Internal 20‑Pin Wire Harness Connector Seal — Black 1‑Pack, Includes O‑Ring \u0026 Connector","description":"\u003cp\u003e\u003cstrong\u003eA direct-fit 20-pin internal wiring harness seal that replaces worn OE seals to stop oil intrusion in Allison LCT1000\/LCT2000 and GM 4T65-E connectors.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen an automatic transmission harness seal fails it can allow oil into the connector, causing corrosion, electrical issues, and intermittent faults. Fleece Performance Engineering supplies a complete replacement kit that restores a clean, dry connection: a new 20-pin internal seal sized for the OE harness, a replacement O-ring for the connector body, and a fresh connector shell. This kit is intended as a straightforward repair part for technicians and DIYers servicing Allison LCT1000 (2001–2019), LCT2000, and GM 4T65-E transmissions.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this seal stop oil getting into the transmission harness?\u003c\/h3\u003e\n\u003cp\u003eThe seal forms a barrier around each of the 20 internal terminals and mates with the connector body O-ring to prevent fluid migration into the electrical cavity. Properly seated, it restores the original moisture- and oil-resistant path.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e20-pin internal seal matches OE dimensions for tight fit\u003c\/li\u003e\n  \u003cli\u003eIncludes connector-body O-ring to renew the mating surface\u003c\/li\u003e\n  \u003cli\u003eNew connector body replaces cracked or deformed shells\u003c\/li\u003e\n  \u003cli\u003eBlack elastomer resists oil and aging under normal operating temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this fit my Allison LCT or GM 4T65-E harness?\u003c\/h3\u003e\n\u003cp\u003eYes — the part is designed for internal OE-style harnesses used on Allison LCT1000 (2001–2019), LCT2000, and GM 4T65-E transmissions. It replaces several hard-to-find original seals and fits harnesses listed by the OE part numbers.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with Allison LCT1000 (2001–2019) and LCT2000\u003c\/li\u003e\n  \u003cli\u003eEngineered for GM 4T65-E transmission harnesses\u003c\/li\u003e\n  \u003cli\u003eDirect substitute for OE internal seals P\/Ns: 29545307, 29541371, 29539792, 29543336\u003c\/li\u003e\n  \u003cli\u003eSold as a single 1-pack kit for one connector repair\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat does the kit include and how easy is installation?\u003c\/h3\u003e\n\u003cp\u003eThe kit bundles the internal 20-pin seal, a replacement connector body, and the mating O-ring so you can complete a repair in a single service procedure. Installation requires basic terminal release tools and careful seating of the seal to ensure the correct compression with the connector body.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncluded: 20-pin internal seal, connector body, and connector O-ring\u003c\/li\u003e\n  \u003cli\u003eInstallation needs terminal removal\/retention tools and clean mating surfaces\u003c\/li\u003e\n  \u003cli\u003eFollow harness terminal orientation and index tabs when reassembling\u003c\/li\u003e\n  \u003cli\u003eRecommended inspection of pins and wiring for corrosion or damage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long can I expect the repair to last and what should I check?\u003c\/h3\u003e\n\u003cp\u003eWhen installed correctly and used under normal operating conditions, the replacement seal and O-ring restore the original sealing function and should last through routine vehicle service intervals. Periodic inspection is advised after heavy use or fluid exposure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMaterial resists oil and typical underhood temperatures\u003c\/li\u003e\n  \u003cli\u003eInspect for oil residue, pin corrosion, and O-ring compression during service\u003c\/li\u003e\n  \u003cli\u003eReplace immediately if connector body is cracked or pins are damaged\u003c\/li\u003e\n  \u003cli\u003eKeep connector and cavity clean before reassembly for best sealing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: technicians, fleet maintenance teams, and experienced DIY mechanics who need an OEM-compatible internal connector seal for Allison LCT1000\/LCT2000 or GM 4T65-E transmissions. If you’re replacing a hard-to-find OE internal seal or repairing a connector that has oil intrusion, this Fleece Performance Engineering one-pack kit gives the parts required to restore a sealed, reliable electrical connection.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this seal fit Allison LCT1000 models from 2001–2019?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The 20-pin internal seal is designed for Allison LCT1000 (2001–2019) and LCT2000 harnesses.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are OE part numbers supported by this replacement kit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It fits OE internal harnesses with P\/Ns 29545307, 29541371, 29539792, and 29543336.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Fleece Performance Engineering","offers":[{"title":"Default Title","offer_id":48083022807198,"sku":"B0DWLZN8B8","price":50.62,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/fleece-performance-engineering-front-connector-view.jpg?v=1785822875","url":"https:\/\/northtrailauto.ca\/products\/fleece-performance-engineering-internal-20-pin-wire-harness-connector-seal-black-1-pack-includes-o-ring-connector","provider":"North Trail Auto","version":"1.0","type":"link"}