Transmission Line Adapter Fittings

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!

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ICT Billet Transmission Line Adapters 551121-8AN

ICT Billet Transmission Line Adapters 551121-8AN

Transmission Line Adatper Fittings, Male AN O-Ring, -6 AN, Male AN, -8 AN, Aluminum, Natural, 6L80E, 6L90E, 8L90E, Each

Part Number: ICB-551121-8AN

5.0 out of 5 stars ( 1 )

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Summit Racing™ Transmission Line Adapter Fittings SUM-220576C

Transmission Line Adapter, Aluminum, Clear Anodized, Male 1/4 in. NPS 4L80E, 4L85E, Male -6 AN, Each

Part Number: SUM-220576C

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S.U.R.&R. Transmission Oil Cooler Line Adapters SRRTR975

Transmission Line Adapters, 90 Degree, 3/8 in. Line, GM Quick Connect to Hose Barb, Steel, Pair

Part Number: URR-TR975

5.0 out of 5 stars ( 2 )

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Bowler Performance Transmissions Transmission Line Adapter Fittings 2410140

Transmission Cooler Manifold, FORD 10R140, With -8AN Fittings

Part Number: BTM-2410140

Not Yet Reviewed

Estimated Ship Date: Nov 3, 2025 if ordered today

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Estimated Ship Date: Nov 3, 2025 if ordered today

Earl's Performance Transmission Cooler Line Adapters 1133ERL

Transmission Cooler Adapter, Billet Aluminum, Black Anodized, -6AN, 6L80, 6L80E, 6L90, 6L90E, Each

Part Number: EAR-1133ERL

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ATI Transmission Cooler Line Fittings ATI960002

Fitting, Adapter, 1/4 in. NPT Male, -6 AN Male, Aluminum, Blue Anodized, Superglide, Each

Part Number: ATI-960002

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ATI Transmission Cooler Line Fittings ATI925143

Fitting, Transmission Line into Case Adapter, -6 AN Male to 9/16 in.-18 Male, Aluminum, Black Anodized, Each

Part Number: ATI-925143

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Dorman Transmission Line Connectors 800-617

Oil Cooler Connector, Steel, Zinc Chromate Finish, Ford, Mercury, Each

Part Number: RNB-800-617

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TCI Transmission Cooler Line Fittings 831011

Transmission Line Adapter Fittings, 1/4 in. 4L80E to -6 AN, 4L80E, 4L85E, 1997 -2008, Pair

Part Number: TCI-831011

3.5 out of 5 stars ( 8 )

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Fragola Performance Systems Transmission Line Adapter Fittings 481672-BL

Transmission Line Adapter, Aluminum, Black, Male -6 AN, to Male 1/4 in. NPS, Long for 4L80E, 4L85E, Rear, Each

Part Number: FRA-481672BL

5.0 out of 5 stars ( 1 )

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TCI Transmission Cooler Line Fittings 831010

Transmission Line Adapter Fittings, 1/4 in. 4L80E to -6 AN, 4L80E, 4L85E, 1997 -2008, Pair

Part Number: TCI-831010

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Mopar Replacement Quick Connect Transmission Fittings 52119547AA

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

5.0 out of 5 stars ( 1 )

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Derale Transmission Line Fittings 13018

Transmission Line Adapters, Aluminum, Black Anodized, 5/8 in. Inverted Flare to Male Hose Barb, Fittings, Pair

Part Number: DER-13018

1.0 out of 5 stars ( 2 )

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Redhorse Performance 8248 Series Tee Adapter Fittings 8262-06-04-1

Transmission Line Adapter, Aluminum, Blue Anodized, Male -6 AN, to Male 1/4 in. NPS, Pair

Part Number: HSE-8262-06-04-1

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Redhorse Performance 8248 Series Tee Adapter Fittings 8262-08-04-2

Transmission Line Adapter, Aluminum, Black Anodized, Male -8 AN, to Male 1/4 in. NPS, Pair

Part Number: HSE-8262-08-04-2

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Hayden Transmission Line Adapter Fittings 393

Transmission Line Adapter, Brass, 1/2 in.-20 I.F., Chevy, GMC, Oldsmobile, Each

Part Number: HDA-393

5.0 out of 5 stars ( 4 )

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Hayden Transmission Line Adapter Fittings 388

Cooler Fitting, 1/2 in. Hose Barb x 7/8-14 in., Each

Part Number: HDA-388

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Derale Transmission Line Fittings 13025

Transmission Line Fittings, Brass, Natural, 3/8 in. Hose Barb, 5/8 in.-18 Inverted Flare, Pair

Part Number: DER-13025

4.0 out of 5 stars ( 2 )

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ICT Billet Transmission Line Adapters AN799-4L-06A

2008-up 4L80E 4L85 Transmission Adapter Fitting Rear Port 6AN Flare 6 AN 9/16-18

Part Number: ICB-AN799-4L-06A

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S.U.R.&R. Transmission Oil Cooler Line Adapters SRRTR970

Transmission Line Adapters, 45 Degree, 3/8 in. Line, GM Quick Connect to Hose Barb, Steel, Pair

Part Number: URR-TR970

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Bowler Performance Transmissions Transmission Line Adapter Fittings 2410007

Trans Cooler Fittings, 4L80E 04'-UP LARGE 9/16 THREADS IN CASE, Converts to -6AN, Includes O-rings, Set of 2

Part Number: BTM-2410007

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Derale Transmission Line Fittings 13014

Transmission Line Adapters, Brass, 1/4 in. NPT to Hose Barb, One Male and One Female Fitting, Pair

Part Number: DER-13014

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Dorman Transmission Line Connectors for 1994-2003 RAM 2500, RAM 3500 - 800-716

Transmission Line Connector, Brass, Dodge, 47RE, Each

Part Number: RNB-800-716

5.0 out of 5 stars ( 1 )

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Racing Automotive Group Transmission Line Adapter Fittings 710-06-2

GM Transmission Cooler Line Adapter -6AN to 1/4 NPSM (2) Pack

Part Number: RAU-710-06-2

Not Yet Reviewed

Estimated Ship Date: Oct 23, 2025 if ordered today

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Estimated Ship Date: Oct 23, 2025 if ordered today

Bowler Performance Transmissions Transmission Line Adapter Fittings 2410006

Trans Cooler Fittings, 4L80E LATE '97-up, CONVERTS TO -6AN, Includes O-rings, 1/4" NPSM, Set of 2

Part Number: BTM-2410006

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Estimated Ship Date: Nov 3, 2025 if ordered today

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Estimated Ship Date: Nov 3, 2025 if ordered today

ACDelco Automatic Transmission Oil Cooler End Fittings 24233367

Transmission Line Adapter Fittings, Rear Fitting, Female Quick Connect, Male 1/4 in. NPT, Steel, Chevrolet, 4L80E, Each

Part Number: ADO-24233367

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