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Our eBay Store About Us Contact Us Add to Favorite Sellers Holley EFI 558-405 GM 4L60/80E Transmission Harness GM 4L60/80E Transmission Harness - For 1996-2008 Transmissions only.; GM 4L60/80E Transmission Harness - Complete terminated harness with j4 connector to operate GM electronic transmissions. For 2009+ GM 4L60/80E Transmission use Holley EFI Part Number 558-455.; General Policies Payment Method We gladly accept PayPal and All Major Credit Cards. Warranty & Return PolicyHolley Performance...

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