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.

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.

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Results 1 - 25 of 114

AutoMeter Radiator Hose Adapters 2282

Radiator Hose Adapter, Aluminum, 1 in. to 1.25 in., with Sending Unit Port, Kit

Part Number: ATM-2282

4.27 out of 5 stars ( 11 )

Estimated Ship Date: Monday 9/22/2025

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Estimated Ship Date: Monday 9/22/2025

Allstar Performance Radiator Inlet AN to Straight Cut Fittings ALL30040

Fitting, Adapter, AN to Straight Cut, Straight, Aluminum, Natural, -20 AN, -20 AN, Each

Part Number: AAF-ALL30040

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/22/2025

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Estimated Ship Date: Monday 9/22/2025

PRW Radiator Fittings 5292417

Fitting, Adapter, AN to Straight Cut, Straight, Aluminum, Black Anodized, -20 AN, -20 AN, Each

Part Number: PQX-5292417

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/22/2025

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Estimated Ship Date: Monday 9/22/2025

PRW Radiator Fittings 5292413

Fitting, Adapter, AN to Straight Cut, Straight, Aluminum, Silver Anodized, -20 AN, -20 AN, Each

Part Number: PQX-5292413

Not Yet Reviewed

Estimated Ship Date: Nov 3, 2025 if ordered today

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Estimated Ship Date: Nov 3, 2025 if ordered today

Be Cool Inline Radiator Hose Adapters 72065

Be Cool Inline Radiator Hose Adapters 72065

Tube, Aluminum, .080 in. Wall, 1.50 in. O.D., 6 in. Long, 0.375 in. Bung, Each

Part Number: BCI-72065

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 9/22/2025

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Estimated Ship Date: Monday 9/22/2025

Frostbite Radiator Inlet Nipple to Straight Cut Fittings FB401

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: Monday 9/22/2025

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Estimated Ship Date: Monday 9/22/2025

Allstar Performance Radiator Inlet Nipple to Straight Cut Fittings ALL30038

Fitting, Adapter, Straight Cut to Hose Barb, Straight, Aluminum, Natural, -20 AN, 1 1/2 in. Hose Barb, Each

Part Number: AAF-ALL30038

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 9/22/2025

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Estimated Ship Date: Monday 9/22/2025

PRW Radiator Fittings 5292333

RADIATOR FITTING, STRAIGHT, -20 AN O-Ring Male to 1.75 in. Hose, Aluminum, Silver Anodized, incl raw bung, Each

Part Number: PQX-5292333

Not Yet Reviewed

Estimated Ship Date: Nov 3, 2025 if ordered today

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Estimated Ship Date: Nov 3, 2025 if ordered today

Allstar Performance Radiator Overflow Fittings ALL99312

Fitting, Adapter, NPT to Hose Barb, Straight, Aluminum, Natural, 1/8 in. NPT, 5/16 in. Hose Barb, Each

Part Number: AAF-ALL99312

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Monday 9/22/2025

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Estimated Ship Date: Monday 9/22/2025

Frostbite Radiator Inlet Nipple to Straight Cut Fittings FB400

Fitting, Adapter, Straight Cut to Hose Barb, Straight, Aluminum, Natural, -16 AN, 1 1/4 in. Hose Barb, Each

Part Number: FBR-FB400

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/22/2025

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Estimated Ship Date: Monday 9/22/2025

AutoMeter Radiator Hose Adapters 2283

Radiator Hose Adapter with Gauge Port, Aluminum, 1.50 in. to 1.50 in., Kit

Part Number: ATM-2283

4.87 out of 5 stars ( 62 )

Estimated Ship Date: Monday 9/22/2025

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Estimated Ship Date: Monday 9/22/2025

Flex-A-Lite In-Line Radiator Hose Adapters 108426

Radiator Hose Adapter, Aluminum, Natural, 1 3/4 in. Hose, 1/4 in. NPT Ports, Each

Part Number: FLX-108426

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/22/2025

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Estimated Ship Date: Monday 9/22/2025

PRW Radiator Fittings 5292323

RADIATOR FITTING, STRAIGHT, -20 AN O-Ring Male to 1.50 in. Hose, Aluminum, Silver Anodized, incl raw bung, Each

Part Number: PQX-5292323

Not Yet Reviewed

Estimated Ship Date: Monday 9/22/2025

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Estimated Ship Date: Monday 9/22/2025

Frostbite Radiator Inlet Nipple to Straight Cut Fittings FB402

Fitting, Adapter, Straight Cut to Hose Barb, Straight, Aluminum, Natural, -16 AN, 1 3/4 in. Hose Barb, Each

Part Number: FBR-FB402

Not Yet Reviewed

Estimated Ship Date: Monday 9/22/2025

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Estimated Ship Date: Monday 9/22/2025

PRW Radiator Fittings 5292337

RADIATOR FITTING, STRAIGHT, -20 AN O-Ring Male to 1.75 in. Hose, Aluminum, Black Anodized, incl raw bung, Each

Part Number: PQX-5292337

Not Yet Reviewed

Estimated Ship Date: Nov 3, 2025 if ordered today

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Estimated Ship Date: Nov 3, 2025 if ordered today

Allstar Performance Radiator Inlet AN to Straight Cut Fittings ALL30039

Fitting, Adapter, AN to Straight Cut, Straight, Aluminum, Natural, -16 AN, -20 AN, Each

Part Number: AAF-ALL30039

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/22/2025

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Estimated Ship Date: Monday 9/22/2025

Allstar Performance Radiator Inlet Nipple to Straight Cut Fittings ALL30041

Fitting, Adapter, Straight Cut to Hose Barb, Straight, Aluminum, Natural, -20 AN, 1 3/4 in. Hose Barb, Each

Part Number: AAF-ALL30041

Not Yet Reviewed

Estimated Ship Date: Monday 9/22/2025

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Estimated Ship Date: Monday 9/22/2025

Be Cool Inline Radiator Hose Adapters 72102

Coolant Tube Drain, Aluminum, 1.25 in. Diameter, Threaded Bung, Each

Part Number: BCI-72102

4.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 9/22/2025

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Estimated Ship Date: Monday 9/22/2025

PRW Radiator Fittings 5292410

RADIATOR FITTING, ADAPTER, Union, Straight, -20AN O-Ring Male to -20AN Male, Aluminum, incl raw bung, Blue Anodized, Each

Part Number: PQX-5292410

Not Yet Reviewed

Estimated Ship Date: Nov 3, 2025 if ordered today

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Estimated Ship Date: Nov 3, 2025 if ordered today

PRW Radiator Fittings 5292327

RADIATOR FITTING, STRAIGHT, -20 AN O-Ring Male to 1.50 in. Hose, Aluminum, Black Anodized, incl raw bung, Each

Part Number: PQX-5292327

Not Yet Reviewed

Estimated Ship Date: Nov 3, 2025 if ordered today

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Estimated Ship Date: Nov 3, 2025 if ordered today

Flex-A-Lite In-Line Radiator Hose Adapters 107078

Radiator Hose Adapter, Aluminum, Fits 1 1/2 in. Hose, Has Two 1/4 in. NPT Ports, Includes One Plug, Each

Part Number: FLX-107078

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/22/2025

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Estimated Ship Date: Monday 9/22/2025

DeWitts Inline Temperature Adapters with Ground 32-17627G

Fitting, TemperatureGauge, 1 1/2 in. Hose Barb to 1 1/2 in. Hose Barb, 3/8 in. NPT Gauge Port, M6 x 1.0 Threaded Ground Point, Aluminum, Natural, Each

Part Number: DWR-32-17627G

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/22/2025

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Estimated Ship Date: Monday 9/22/2025