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 - 24 of 24

Gauge Adapters, Swivel Manifolds, Straight, Aluminum, Black Anodized, -6 AN Male Threads, -6 AN Female Swivel, 1/8 in. NPT Female Threads, Each

Part Number: NXO-00-01705

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Gauge Adapters, Swivel Manifolds, Straight, Aluminum, Black Anodized, -4 AN Male Threads, -4 AN Female Swivel, 1/8 in. NPT Female Threads, Each

Part Number: NXO-00-01701

4.0 out of 5 stars ( 4 )

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Heater Hose Adapters, Plug Fittings, Steel, Zinc, Set of 6

Part Number: HLY-97-365

Not Yet Reviewed

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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 )

Estimated Ship Date: Today

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Adapter Fitting, Brass, Straight, 3/8 in. NPT Male, 5/8 in. NPT Female, Each

Part Number: LNG-46160

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

Fitting and Adapters, Holley, Replacement, Plugs and Fittings, NPT to BSPT, Straight, Aluminum, Chrome, for 20-242 and 20-242BK Manifolds, Kit

Part Number: HLY-97-319

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Nitrous Outlet 6AN Female To Male Swivel Adapter with Dual 1/8" NPT Ports

Part Number: NXO-605807606D

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Adapter Fitting, Brass, Straight, 1/2 in. NPT Male, 5/8 in. NPT Female, Each

Part Number: LNG-46150

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Fitting and Adapters, Holley, Replacement, Plugs and Fittings, NPT to BSPT, Straight, Aluminum, Chrome, 3/4 in. NPT, for LT/LS Cooling Manifold, Kit

Part Number: HLY-97-177

4.5 out of 5 stars ( 2 )

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Gauge Adapters, Dual Inline Oil Sensor Manifold Blocks, Straight, Aluminum, Black, -10 AN O-ring, -10 AN O-ring, 1/8 in. NPT, Female Threads, Each

Part Number: IRP-ENV-150

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Fitting and Adapters, Holley, Replacement, Plugs and Fittings, NPT to BSPT, Straight, Aluminum, Chrome, for 20-240 and 20-240BK Manifolds, Kit

Part Number: HLY-97-301

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Nitrous Outlet 4AN Female To Male Swivel Adapter with Dual 1/8" NPT Ports

Part Number: NXO-605807604D

Not Yet Reviewed

Estimated Ship Date: Dec 11, 2025 if ordered today

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Estimated Ship Date: Dec 11, 2025 if ordered today

-16AN MANIFOLD OUTLET BB FORD W/ O-RING BLACK

Part Number: MEZ-WN0816S

Not Yet Reviewed

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Nitrous Manifold, Flo-Thru Manifold, D6 Swivel

Part Number: NEX-15502

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Nitrous Manifold, Flo-Thru Manifold, D4 Swivel

Part Number: NEX-15501

5.0 out of 5 stars ( 2 )

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Fitting, Adapter, NPT to Hose Barb, Straight, Steel, Chrome, 1/2 in. NPT, 5/8 in. Hose Barb, Each

Part Number: TFF-4450C

5.0 out of 5 stars ( 5 )

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Fitting, Temperature Gauge, 5/8"-18 Threaded Hole for 1/2" NPT Hole, Brass

Part Number: MOR-63645

4.0 out of 5 stars ( 4 )

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Adapter Fitting, Straight, Aluminum, Black, Ford, Pair

Part Number: FHF-FP-HCAN-P

Not Yet Reviewed

Estimated Ship Date: Dec 19, 2025 if ordered today

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Estimated Ship Date: Dec 19, 2025 if ordered today

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

Part Number: FHF-FP-HCAN-S

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Fitting, Adapter, NPT to Hose Barb, Straight, Steel, Chrome, 1/2 in. NPT, 3/4 in. Hose Barb, Each

Part Number: TFF-4450B

4.43 out of 5 stars ( 7 )

Estimated Ship Date: Today

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BRASS BUSHING, 1/2"MPT X 3/8"FPT

Part Number: FST-30278-1

5.0 out of 5 stars ( 1 )

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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, Adapter, NPT to Hose Barb, Straight, Steel, Chrome, 1/2 in. NPT, 3/4 in. Hose Barb, Each

Part Number: TFF-4450A

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Fitting, Adapter, NPT to Hose Barb, Straight, Brass, Natural, 1/8 in. NPT, 3/16 in. Hose Barb, Each

Part Number: RUS-697000

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