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AN & NPT Fittings & Adapters, Fuel Line Fittings, Hose Couplers & more

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AN & NPT Fittings & Adapters, Fuel Line Fittings, Hose Couplers & more

No matter what you’re plumbing—brakes, fuel, vacuum, oil, nitrous—you can plumb it with help from Summit Racing Equipment! You can find all of the...

No matter what you’re plumbing—brakes, fuel, vacuum, oil, nitrous—you can plumb it with help from Summit Racing Equipment! You can find all of the automotive fittings you need right here, including a wide range of AN, NPT, fuel line and hose fittings, along with adapters and reducers to go from one to another, and so much more. Our huge selection means you can assemble the complex custom plumbing system your competition vehicle needs, restore your classic car with period-accurate components, or just keep your daily driver running right. Take a look at our options for AN Hoses, to go along with your fittings.

No matter what you’re plumbing—brakes, fuel, vacuum, oil, nitrous—you can plumb it with help from Summit Racing Equipment! You can find all of the automotive fittings you need right here, including a wide range of AN, NPT, fuel line and hose fittings, along with adapters and reducers to go from one to another, and so much more. Our huge selection means you can assemble the complex custom plumbing system your competition vehicle needs, restore your classic car with period-accurate components, or just keep your daily driver running right. Take a look at our options for AN Hoses, to go along with your fittings.

Top Brands


Starting now, you can shop from all the best brands of automotive fittings on the market, including Russell, Earl’s, Aeroquip, and Fragola, plus our dependable and budget-friendly Summit Racing brand.

Individual Parts

Results 1 - 25 of 176

Fittings and Adapters, Reducer, 3/8 in. NPT Female, 1/4 in. NPT Male, Straight, Brass, Natural Finish, Each

Part Number: WMR-M482

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Air Hose Fittings, Hose Repair Kit, Brass, Natural Finish, 3/8 in. Air Hose, includes, Hose Clamps, Hose Splice, Hose Ends, Male Thread, Kit

Part Number: WMR-M479

Not Yet Reviewed

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Fitting, Coupler, Union, NPT to NPT, 90 Degree/Straight, Aluminum/Steel, Blue, 1/4 in. NPT, 1/4 in. NPT, Swivel, 3-way, Each

Part Number: APT-3SB40

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Fittings and Adapters, Reducer, 1/2 in. NPT Male, 3/8 in. NPT Female, Straight, Brass, Natural Finish, Each

Part Number: WMR-M487

5.0 out of 5 stars ( 1 )

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Fittings and Adapters, Hose Repair Coupler, Hose Barb Ends, Straight, Brass, Natural Finish, 3.75 in. Long, for 3/8 in. Hose, Pair

Part Number: WMR-M477

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Fuel Line Repair Kit, Male Thread, M16 x 1.5, 3/8 Nipple, 4 in. length, Steel, Each

Part Number: RNB-800-170

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Oil Pressure Adapter, Aluminum, GM Gen IV and V Engines, Each

Part Number: OTC-7297

Not Yet Reviewed

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Tube Coupler 3/4" GOLD EXTENSION TUBE COUPLER

Part Number: SNI-77006

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

COMPRESSOR VALVE

Part Number: SNG-33934

Not Yet Reviewed

Estimated Ship Date: Feb 25, 2026 if ordered today

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Estimated Ship Date: Feb 25, 2026 if ordered today

Oil Pressure Adapter, Aluminum, Chevy, LS, Each

Part Number: OTC-7219

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

SPREADER W/ COUPLER

Part Number: OTC-9102

Not Yet Reviewed

Estimated Ship Date: Mar 30, 2026 if ordered today

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Estimated Ship Date: Mar 30, 2026 if ordered today

Intake Cleaning Adapter, Kit

Part Number: URR-S-TOOL

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

Fitting, Adapter, Hose Barb to Spring Lock, 90 Degree, Plastic, Black, 5/16 in., 5/16 in., Each

Part Number: URR-KP135

2.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Fitting, EFI Adapter, Straight, Female -8 AN to 5/16 in. Male Quick Connect, Aluminum, Black Anodized, Each

Part Number: DWK-6-02-0132-B

Not Yet Reviewed

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6AN Male Flare to 5/16 Inch Female EFI Quick Connect Adapter, Anodized Matte Black

Part Number: DWK-6-02-0121-B

Not Yet Reviewed

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10AN ORB Male to 5/16 Inch Male EFI Quick Connect Adapter (Incl O-Ring), Anodized DW Titanium

Part Number: DWK-6-02-0124

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

10AN ORB Male to 3/8 Inch Male EFI Quick Connect Adapter (Incl O-Ring), Anodized DW Titanium

Part Number: DWK-6-02-0125

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

6AN ORB Male to 3/8 Inch Male EFI Quick Connect Adapter (Incl O-Ring), Anodized Matte Black

Part Number: DWK-6-02-0122-B

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Fitting, EFI Adapter, Straight, Female -6 AN to 5/16 in. Male Quick Connect, Aluminum, Black Anodized, Each

Part Number: DWK-6-02-0130-B

Not Yet Reviewed

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Fitting, EFI Adapter, Straight, Female -6 AN to 3/8 in. Male Quick Connect, Aluminum, Black Anodized, Each

Part Number: DWK-6-02-0131-B

Not Yet Reviewed

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Fitting, EFI Adapter, Straight, Female -8 AN to 3/8 in. Male Quick Connect, Aluminum, Silver Anodized, Each

Part Number: DWK-6-02-0133

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

8AN Male Flare to 5/16 Inch Male EFI Quick Connect Adapter, Anodized Matte Black

Part Number: DWK-6-02-0138-B

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

8AN ORB Male to 5/16 Inch Male EFI Quick Connect Adapter (Incl O-Ring), Anodized Matte Black

Part Number: DWK-6-02-0123-B

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

Fitting, EFI Adapter, Straight, 3/8 Female Quick Connect to 3/8 in. Female Quick Connect, Aluminum, Black Anodized, Each

Part Number: DWK-6-02-0136-B

Not Yet Reviewed

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8AN Male Flare to 5/16 Inch Female EFI Quick Connect Adapter, Anodized Matte Black

Part Number: DWK-6-02-0143-B

Not Yet Reviewed

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