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Dorman Transmission Line Connectors

4.59 out of 5 stars 17 Customer Reviews

Dorman transmission line connectors are designed to thread-in your automatic transmission case and allow you to connect to an external cooler. They're manufactured from high-quality material that meets or exceeds OEM standards. Available in different thread sizes and configurations, Dorman transmission line connectors will help get you connected. Order the adapters compatible with your application.

Results 1 - 19 of 19

Fitting, Transmission Line Adapter, 1/4 in. NPS to 1/2-20 in. Inverted Flare, Each

Part Number: RNB-800-753

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Fitting, Transmission Line Adapter, 1/4 in. NPS Male Threads, 5/8-18 in. Inverted Flare, Buick, Chevy, Each

Part Number: RNB-800-754

Not Yet Reviewed

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Fitting, Transmission Cooler Line Connector, Steel, 3/8 NPT Male Threads, Quick-connect, Cadillac, Chevy, GMC

Part Number: RNB-800-606

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Trans. Line Connector, Brass, Each

Part Number: RNB-800-605

5.0 out of 5 stars ( 3 )

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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

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Trans. Line Connector, Brass, Each

Part Number: RNB-800-604

3.0 out of 5 stars ( 3 )

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

Part Number: RNB-800-716

5.0 out of 5 stars ( 1 )

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

Part Number: RNB-800-617

Not Yet Reviewed

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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

5.0 out of 5 stars ( 1 )

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Fitting, Transmission Cooler Line Connector, 1/4 in. NPT Male Threads, 5/8-18 in. Male Inverted Flare, Dodge

Part Number: RNB-800-713

5.0 out of 5 stars ( 1 )

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Transmission Line Adapter Fittings, Transmission Line Connectors, Steel, Natural, 1/4 in. NPS Male Threads, 5/16 in. Quick-connect, Ford, Each

Part Number: RNB-800-608

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Transmission Line Connector - Tube Size 1/2 - Thread 9/16-18 UNF

Part Number: RNB-800-619

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Quick-Disconnect Fitting, Transmission Cooler Line, Plastic, Black, Jeep, Each

Part Number: RNB-800-750

Not Yet Reviewed

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Fitting, Transmission Line Adapter, 1/4 in. NPT to 3/8 in. Tube, Each

Part Number: RNB-800-610

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Transmission Line Connector

Part Number: RNB-800-621

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Engine Oil Cooler Line Connector, Brass, Each

Part Number: RNB-800-603

Not Yet Reviewed

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Transmission Connector M18x1.5

Part Number: RNB-800-721

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Transmission Connector for 5/8 In. Tube 7/8-14 UNF

Part Number: RNB-800-613

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Transmission Fitting

Part Number: RNB-800-728

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

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