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!

Individual Parts

Part Groups

Results 1 - 25 of 213

Earl's Performance Transmission Cooler Line Adapters 940006ERL

Transmission Cooler Adapter -6AN Male to ¼-18 NPS

Part Number: EAR-940006ERL

4.25 out of 5 stars ( 16 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Summit Racing™ Transmission Line Adapter Fittings SUM-220027

Transmission Line Adapters, Aluminum, Black, Male -6 AN to 1/4 in.-18 NPSM, Pair

Part Number: SUM-220027

4.03 out of 5 stars ( 29 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

ICT Billet Transmission Line Adapters 551121-6AN

ICT Billet Transmission Line Adapters 551121-6AN

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

Part Number: ICB-551121-6AN

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

ICT Billet Transmission Line Adapters 551114

Fittings, Transmission Line Adapters, Aluminum, Natural, -6 AN Male Threads, 1/4 in. NPSM Male, O-Rings, Pair

Part Number: ICB-551114

4.34 out of 5 stars ( 32 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Earl's Performance Transmission Cooler Line Adapters 1128ERL

Transmission Cooler Adapter, Billet Aluminum, Black Anodized, 6AN, 6L80, 6L90, 8L90E, Each

Part Number: EAR-1128ERL

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

ICT Billet Transmission Line Adapters 551124

Fittings, Transmission Line Adapters, Aluminum, Natural, -6 AN Male Threads, 1/4 in. NPS Male Threads, 4L80E, Pair

Part Number: ICB-551124

4.0 out of 5 stars ( 8 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Fragola Performance Systems Transmission Line Adapter Fittings 481670-BL

Transmission Line Adapter, Aluminum, Black, Male -6 AN, to Male 1/4 in. NPS, Each

Part Number: FRA-481670-BL

4.62 out of 5 stars ( 13 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Bowler Performance Transmission Cooler Manifolds 2410003

Transmission Line Adapter Fitting, Transmission Cooler Manifold, -6 AN Male Threads, Angled Access Port, Aluminum, Clearcoat, Each

Part Number: BTM-2410003

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Russell Transmission Cooler Line Fittings 641390

Fittings, Transmission Cooler Lines to Case, -6 AN to 1/4 in. 4L80E, 4L85E, Straight Thread, Black Anodized, Pair

Part Number: RUS-641390

4.85 out of 5 stars ( 20 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Russell Transmission Cooler Line Fittings 640520

Fittings, Transmission Cooler Lines to Case, -6 AN to 1/4 in. NPSM Straight Thread, Black Anodized, Pair

Part Number: RUS-640520

4.7 out of 5 stars ( 33 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Summit Racing™ Transmission Line Adapter Fittings SUM-220571B

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

Part Number: SUM-220571B

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 10, 2025 if ordered today

...Loading

Estimated Ship Date: Nov 10, 2025 if ordered today

Need It Sooner?

We recommend these similar substitute parts:

Fragola Performance Systems Transmission Line Adapter Fittings 481670-BL

4.5 out of 5 stars ( 13 )

Estimated Ship Date: Today

...Loading

Bowler Performance Transmission Cooler Manifolds 2410002

Transmission Line Adapter Fitting Cooler Manifold, Aluminum, Black, Ford, 6R80E, 10R80, Each

Part Number: BTM-2410002

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Sonnax Cooler Line Repair Kits 22000-01K

Transmission Line Adapter Fittings, Cooler Line Repair, Chrysler, Kit

Part Number: SOX-22000-01K

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Bowler Performance Transmission Cooler Line Adapters 2410004

Transmission Line Adapters, Aluminum, Black, Male -6 AN to 1/4 in., Pair

Part Number: BTM-2410004

Not Yet Reviewed

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Fragola Performance Systems Transmission Line Adapter Fittings 481671-BL

Transmission Line Adapter, Aluminum, Black, Male -6 AN, to Male 1/8 in. NPS, Each

Part Number: FRA-481671-BL

4.73 out of 5 stars ( 11 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

TCI Transmission Cooler Line Fittings 831013

Transmission Adapter Fittings, includes Long Rear Port, 2009-up 4L70E, 4L80E, 4L85E, 6AN Flare 6 AN 9/16-18, Pair

Part Number: TCI-831013

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

ICT Billet Transmission Line Adapters AN710-06A

Transmission Line Adapter Fittings, Billet Aluminum, Natural, 1/4 in. NPS Male Threads, -6 AN Male AN, 4L60E, AOD, C5, TH350, TH400, Each

Part Number: ICB-AN710-06A

Not Yet Reviewed

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Russell Transmission Cooler Line Fittings 641400

Fittings, Transmission Cooler Lines to Case, -8 AN to 1/4 in. 4L80E, 4L85E, Straight Thread, Black Anodized, Pair

Part Number: RUS-641400

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Russell Transmission Cooler Line Fittings 640530

Fittings, Transmission Cooler Lines to Case, -8 AN to 1/4 in. NPSM Straight Thread, Black Anodized, Pair

Part Number: RUS-640530

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

ICT Billet Transmission Line Adapters AN799-06A

Transmission Line Adapter Fittings, Billet Aluminum, Natural, 9/16-18 in. Male AN O-ring, -6 AN Male AN, 4L60E, 4L65E, 4L70E, 4L80E, Each

Part Number: ICB-AN799-06A

3.83 out of 5 stars ( 6 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Earl's Performance Transmission Cooler Line Adapters 961982ERL

Transmission Line Adapter Fittings, Transmission Cooler Line Adapters, Steel, Nickel Plated, 9/16-18 in. Male AN O-ring, -6 AN Male AN, Each

Part Number: EAR-961982ERL

4.71 out of 5 stars ( 7 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Advance Adapters Transmission Cooler Line Adapters 23-2001

Transmission Cooler Adapter -6AN Male to 1/2-20 in. Male Inverted Flare, Each

Part Number: ADD-23-2001

4.33 out of 5 stars ( 6 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Summit Racing™ Transmission Line Adapter Fittings SUM-220574B

Transmission Line Adapter, Aluminum, Black Anodized, Male 1/8 in. NPT, Male -6 AN, Each

Part Number: SUM-220574B

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

ATI Transmission Cooler Line Fittings ATI925137

Fitting, Transmission Line into Case Adapter, -6 AN Male to 1/4 in. NPSM Male, Aluminum, Black Anodized, Pair

Part Number: ATI-925137

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

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 )

Estimated Ship Date: Today

...Loading

Estimated Ship Date: Today

Page 1 of 9
Next