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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 38

Fitting, Straight, Adapter, -6 AN Male to GM Factory Fuel Line Quick-Connect, 3/4 in. O-Ring Male Port Plug, Aluminum, Black Anodized, Each

Part Number: HLY-534-211

4.5 out of 5 stars ( 2 )

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Oil Pressure Sensor Adapter, Adapts Factory Porsche M14 x 1.5 Sensors to GM LS Engines, Billet Aluminum, Each

Part Number: ICB-551712-M1415

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Oil Pressure Sensor Adapter, Adapts Factory BMW M12 x 1.5 Sensors to GM LS Engines, Billet Aluminum, Each

Part Number: ICB-551712-M1215

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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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Fuel Rail Fitting, Steel, Stainless, -6 AN Male to 3/8 in Female Spring Lock, Each

Part Number: AEI-15101

4.0 out of 5 stars ( 6 )

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Fitting, Coupler, Straight, Aluminum, Black Anodized, -8 AN Male Threads, 3/8 in. Female Quick-connect, Each

Part Number: EAR-AT992086ERL

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Fitting, Adapter, Fuel Rail Type, Straight, Billet Aluminum, Black, 12mm Male Spring Lock, -6 AN Male Thread

Part Number: AEI-15123

5.0 out of 5 stars ( 2 )

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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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Fitting, Adapter, Fuel Rail Type, Straight, Billet Aluminum, Black, 14mm Male Spring Lock, -6 AN Male Thread

Part Number: AEI-15124

5.0 out of 5 stars ( 1 )

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Adapter Fitting, Straight, Aluminum, Black, Ford, Each

Part Number: FHF-FP-HCAN-S

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Heater Core 3/4 (.750) Hose Barb Outlet to -12AN adapter

Part Number: ICB-F12AN750CP

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3/8" Inline Fuel Adapter Kit - Modular

Part Number: NXO-00-01816

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Fitting, Adapter, Fuel Rail Type, Straight, Billet Aluminum, Black, 14mm Male Spring Lock, -8 AN Male Thread

Part Number: AEI-15125

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Fittings, Fuel Rail Fitting, Aluminum, Black, 180 Degree, -8 AN Male, -8 AN Female, Each

Part Number: HLY-534-321

5.0 out of 5 stars ( 1 )

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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

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Fitting, Straight, Adapter, 3/8 in. NPT, 5/8 Male Quick-Disconnect, Billet Aluminum, Black, Each

Part Number: AEI-15140

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99-04 4.6/5.4L 2V Ford Billet Fuel Rail Adapter

Part Number: NXO-00-01804

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Fittings and Adapters, Fuel Rail, Stainless Steel, Natural, -6 AN Male to 5/16 in. Male Quick Connect, without O-rings, Universal, Each

Part Number: AEI-15103

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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03-06, 09+ Nissan 350/370Z Billet Fuel Rail Adapter

Part Number: NXO-00-01814

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

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: Dec 29, 2025 if ordered today

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Fitting, Adapter, NPT to Hose Barb, 90 Degree, Steel, Natural, 3/8 in. NPT, 3/8 in. Hose Barb, Each

Part Number: RSD-IMF67ZZ

4.33 out of 5 stars ( 3 )

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Sender Fitting, Temperature Sender Adapter Bushing, Straight, Steel, Natural, 1/2 in. NPT Male Threads, M16 x 1.5 Female Threads, Each

Part Number: ADD-716023

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Fitting, Fuel Rail Fitting Adapter, Straight, Aluminum, Zinc Color, -6 AN Male AN, 5/8 in.-18 Inverted Flare Female Inverted Flare, Each

Part Number: TNK-R640610

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Fuel Line Adapter, Billet Aluminum, Black Anodized, 3/8 in. Fuel Tube, 1/8 in. NPT Male, Each

Part Number: NOS-17015NOS

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