Summit Racing SpeedCard - learn how to get 15% back up to $150

Summit Racing SpeedCard - learn how to get 15% back up to $150

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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 309

Fuel Line Adapter, Billet Aluminum, Black Anodized, Late Model Fuel Rail, 3/8 in. Fuel Tube, 1/8 in. Ports, Each

Part Number: NOS-17002NOS

4.8 out of 5 stars ( 5 )

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Fuel Line Adapter, Nitrous, Late Model, Billet, 90 Degree Fitting, 1/8 in. NPT, Female/Male, Anodized, Each

Part Number: NEX-16185D

Not Yet Reviewed

Estimated Ship Date: Jan 27, 2026 if ordered today

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Estimated Ship Date: Jan 27, 2026 if ordered today

Fitting, Fuel Rail Adapter, Late Model, Billet Fuel Line Adapter, 5/16/8MM, Gauge Port, Each

Part Number: NEX-16190

4.86 out of 5 stars ( 7 )

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Fittings, Fuel Rail Adapter, GM/Chrysler EFI Late Model, 3/8/10mm, Gauge Port, Dual Outlets, Each

Part Number: NEX-16185

5.0 out of 5 stars ( 3 )

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Nitrous Oxide Fuel Line Adapter Kit 3/8-10MM LATE MODEL BILLET FUEL LINE ADAPTER, 45 DEGREE

Part Number: NEX-16185-45

Not Yet Reviewed

Estimated Ship Date: Jan 27, 2026 if ordered today

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Estimated Ship Date: Jan 27, 2026 if ordered today

Gauge Adapter, Oil Pressure, NPT to NPT, 45 Degrees, 1/8 in. -NPT Male-Female, Brass Construction, Natural Finish, Each

Part Number: DAK-130070

4.41 out of 5 stars ( 49 )

Estimated Ship Date: Today

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

Part Number: RUS-644123

4.86 out of 5 stars ( 50 )

Estimated Ship Date: Today

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Fitting, Push-On EFI, Straight, Male -6 AN, Female Quick-Connect, Threaded Cap, 5/16 in., Black Anodized, Each

Part Number: RUS-644113

4.89 out of 5 stars ( 35 )

Estimated Ship Date: Today

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Fuel Fitting, Quick-Connect, Chevy LS, LT, Ford Coyote, Aluminum, Black Anodized, Straight, 3/8 in., -6 AN, Each

Part Number: TNK-640853

5.0 out of 5 stars ( 13 )

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Metric Adapters, Accepts 1/8 in. NPT Sender, Kit

Part Number: DAK-SEN-03-6

4.12 out of 5 stars ( 17 )

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Fuel Rail Fitting, Aluminum, Black, Straight, 5/16 in., -6 AN, Each

Part Number: TNK-640863

4.75 out of 5 stars ( 4 )

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Fuel Rail Fitting, Steel, Zinc, Straight, 3/8 in., -6 AN, Each

Part Number: TNK-640940

5.0 out of 5 stars ( 2 )

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Fitting, Adapter, Straight Cut to Hose Barb, Straight, Aluminum, Natural, -16 AN O-Ring, 1 1/2 in. Hose Barb, Each

Part Number: FBR-FB401

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Adapter Fitting; Specialty Adapter Fitting; Black; -06AN Male to 1/4 in. Hard Tube; Push-on EFI Fitting; Fits

Part Number: RUS-641303

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Temperature Adapter, Male 1/2 in. NPT to Female 5/8 in., Brass, Natural, Each

Part Number: ATM-2264

4.86 out of 5 stars ( 7 )

Estimated Ship Date: Today

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Fitting, EFI Adapter, Straight, Male -8 AN to Ford EFI, Aluminum, Black Anodized, Each

Part Number: FRA-491991-BL

5.0 out of 5 stars ( 1 )

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Fuel Line Adapter Fittings, Straight, 3/8 in. Female Quick-connect, 3/8 in. Male Quick-connect, Aluminum, Black Anodized, Ford, Each

Part Number: NXO-00-01812

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Fitting, Adapter, NPT to Hose Barb, Straight, Billet Aluminum, Natural, 3/4 in. NPT, 1 1/2 in. Hose Barb, Each

Part Number: SUM-316101

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Fitting, Adapter, AN to Straight Cut, Straight, Billet Aluminum, Black Anodized, 1 1/4-12 in., -16 AN, Each

Part Number: SUM-01-6704

Not Yet Reviewed

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Gauge Adapters, Quick Connect Gauge Adapter, -6 AN Male, 3/8 in. Quick Connect, 1/8 in. NPT Gauge Port, Billet Aluminum, Black Anodized, Each

Part Number: ICB-AN812-02B

Not Yet Reviewed

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Fuel Line Adapter Fitting 3/8" to 5/16"

Part Number: TNK-IFA3856

Not Yet Reviewed

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Adapter Fitting; Specialty Adapter Fitting; Banjo w/ -6 AN Male Flare; Civics/Integra w/oFuel Pressure Damper

Part Number: RUS-640913

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Fitting, Adapter, NPT to Hose Barb, Straight, Billet Aluminum, Natural, 3/4 in. NPT, 1 3/4 in. Hose Barb, Each

Part Number: SUM-316103

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Fuel Rail Fitting, Inlet Fitting, Adapter Style, Straight, Steel, Natural, -6 AN Male Threads, M16 x 1.5 O-ring Male Threads, Each

Part Number: AAF-ALL50951

5.0 out of 5 stars ( 2 )

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