GMC SIERRA 2500 HD Transmission Line Adapter Fittings

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

Part Number: EAR-1133ERL

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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

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

• $20 Summit Bucks

Transmission Line Adapter, Brass, Male 5/8 in.-18 Inverted Flare, Pair

Part Number: HDA-390

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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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Transmission Line Adapter, Brass, Snap-In, Each

Part Number: HDA-397

4.78 out of 5 stars ( 18 )

Estimated Ship Date: Today

Trans. Line Connector, Brass, Each

Part Number: RNB-800-604

3.0 out of 5 stars ( 3 )

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

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CONNECTOR-ENG OIL CLR HOSE (1/2")

Part Number: NAL-23378668

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Estimated Ship Date: Mar 30, 2026 if ordered today

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