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Take the hassle out of plumbing your transmission lines with our selection of transmission line adapter fittings. Whether you want to upgrade your OEM lines to aftermarket...
Take the hassle out of plumbing your transmission lines with our selection of transmission line adapter fittings. Whether you want to upgrade your OEM lines to aftermarket stainless steel or add a separate transmission cooler, we’ve got the transmission line adapter fittings to get the job done right. Choose from a huge variety of fitting sizes and attachment styles. We carry adapter fittings from Fragola, Derale, Russell, TCI, Be Cool, Dorman, and more. Find the right transmission line adapter fittings for your project at Summit Racing today!
Take the hassle out of plumbing your transmission lines with our selection of transmission line adapter fittings. Whether you want to upgrade your OEM lines to aftermarket stainless steel or add a separate transmission cooler, we’ve got the transmission line adapter fittings to get the job done right. Choose from a huge variety of fitting sizes and attachment styles. We carry adapter fittings from Fragola, Derale, Russell, TCI, Be Cool, Dorman, and more. Find the right transmission line adapter fittings for your project at Summit Racing today!
Showing In Stock Items. Show All 35 Items.
Transmission Cooler Adapter, Billet Aluminum, Black Anodized, -6AN, 6L80, 6L80E, 6L90, 6L90E, Each
Part Number: EAR-1133ERL
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Transmission Line Adapter, Brass, Snap-In, Each
Part Number: HDA-397
Estimated Ship Date: Today
Estimated Ship Date: Today
Transmission Line Adapter, Brass, Male 5/8 in.-18 Inverted Flare, Pair
Part Number: HDA-390
Estimated Ship Date: Today
Estimated Ship Date: Today
Fitting, Transmission Line Adapter, 1/4 in. NPS to 1/2-20 in. Inverted Flare, Each
Part Number: RNB-800-753
Estimated Ship Date: Today
Estimated Ship Date: Today
Estimated Ship Date: Today
Estimated Ship Date: Today
Fitting, Transmission Cooler Line Connector, Steel, Natural, 9/16-18 in. Male Threads, 3/8 in. Quick-connect, 4T65E, Buick, Chevy, Pontiac, Saturn
Part Number: RNB-800-614
Estimated Ship Date: Today
Estimated Ship Date: Today
Transmission Line Connector - Tube Size 1/2 - Thread 9/16-18 UNF
Part Number: RNB-800-619
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Fitting, Transmission Cooler Line to Case, 1/4 in. NPS, Long, Most 1997-2008 4L80E Rear, Each
Part Number: RNB-800-759
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Transmission Line Adapter Fittings, 1/4 in. NPS Male Threads to 3/8 in. Quick-connect Female Threads, Steel, Natural, GM, Hummer, Each
Part Number: ADO-19125677
Estimated Ship Date: Today
Estimated Ship Date: Today
Transmission Line Adapter Fittings, Transmission Oil Cooler Fittings, Steel, 5/16 in. Male Threads, Female Inverted Flare, AMC, Chevy, Ford, GMC, Each
Part Number: FSS-53020
Estimated Ship Date: Today
Estimated Ship Date: Today
Transmission Line Adapter Fitting, Oil Cooler End Fitting, Steel, Natural, Buick, Cadillac, Chevy, GMC, Each
Part Number: ADO-19210848
Estimated Ship Date: Today
Estimated Ship Date: Today
Fitting, Transmission Line, Quick Connect, 1/2 in.Thread, 3/8 in. Line, Cooler Line to Case, Chrysler, Dodge, Jeep, Mits, Ram, Confirm Size, Each
Part Number: MOP-52119547AA
Estimated Ship Date: Today
Estimated Ship Date: Today
CONNECTOR-ENG OIL CLR HOSE (1/2")
Part Number: NAL-23378668
Not Yet Reviewed
Estimated Ship Date: Mar 23, 2026 if ordered today
Estimated Ship Date: Mar 23, 2026 if ordered today
Fitting, Transmission Cooler Line Connector, Steel, 3/8 NPT Male Threads, Quick-connect, Cadillac, Chevy, GMC
Part Number: RNB-800-606
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Transmission Line Adapter Fittings, Transmission Line Connectors, Steel, Natural, 1/4 in. NPS Male Threads, 5/16 in. Female Threads, Ford, Each
Part Number: RNB-800-609
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
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