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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 129

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

Part Number: ATM-2283

4.88 out of 5 stars ( 64 )

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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 )

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Temperature Sender Fitting, Radiator, Inline, 1 1/2 in. Hose Diameter, 1/2 in. Sensor Hole, Each

Part Number: ADD-716674

4.67 out of 5 stars ( 6 )

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Temperature Sender Fitting, Brass, Heater Hose, Inlet/Outlet 5/8 in. Hose Barbs, Each

Part Number: ATM-2280

4.85 out of 5 stars ( 13 )

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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 )

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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 )

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Adapter, Tube, 1.50 in. O.D., 6 in. Long, 0.080 in. Wall, 0.375 in. Bung, No.10-32 Threaded Ground Lug, Aluminum, Each

Part Number: BCI-72065

4.67 out of 5 stars ( 3 )

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Adapter, Heater Hose, 0.75 in., Each

Part Number: ATM-2281

4.86 out of 5 stars ( 7 )

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

Part Number: BCI-72102

4.14 out of 5 stars ( 7 )

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Radiator Hose Adapter, 3/8 in. Gauge Port, Aluminum, 1.50 in. to 1.50 in., Each

Part Number: DWR-32-17627

5.0 out of 5 stars ( 2 )

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Fitting and Adapter, Water Temperature Sensor Hose Adapter, Straight, Aluminum, Black, 1 1/2 in. Hose Barb, 1/4 in. NPT Gauge Port Size, Each

Part Number: RAD-TS38

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Hose Adapter 1.25" to 1.5" w/ 1/4" NPT Port

Part Number: RAD-TS32-38

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1.25" Hose Adapter w/ 1/4" NPT Port

Part Number: RAD-TS32

4.5 out of 5 stars ( 2 )

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Radiator Hose to Male AN Fitting - 1.25" x -16AN - Black Anodized

Part Number: CHH-3516-1250-MB

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Radiator Hose to AN Fitting - 1.75" x -16AN - Raw Aluminum

Part Number: CHH-3516-1750

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Estimated Ship Date: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

Radiator Hose to Male AN Fitting - 1.50" x -12AN - Black Anodized

Part Number: CHH-3512-1500-MB

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Radiator Hose to Male AN Fitting - 1.75" x -12AN - Black Anodized

Part Number: CHH-3512-1750-MB

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Radiator Hose to AN Fitting - 1.50" x -16AN ORB - Black Anodized

Part Number: CHH-3516-1500-B

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Radiator Hose to Male AN Fitting - 1.75" x -12AN - Raw Aluminum

Part Number: CHH-3512-1750-M

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Estimated Ship Date: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

Radiator Hose to Male AN Fitting - 1.75" x -16AN - Raw Aluminum

Part Number: CHH-3516-1750-M

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Estimated Ship Date: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

Radiator Hose Adapter, Nylon, Black, Compatible with 1.250 in to 1.575 in. hose, Kit

Part Number: DCW-DC-0409

4.5 out of 5 stars ( 10 )

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Radiator Hose to Male AN Fitting - 1.50" x -16AN - Black Anodized

Part Number: CHH-3516-1500-MB

Not Yet Reviewed

Estimated Ship Date: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

Radiator Hose to AN Fitting - 1.25" x -16AN ORB - Black Anodized

Part Number: CHH-3516-1250-B

Not Yet Reviewed

Estimated Ship Date: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

Radiator Hose to AN Fitting - 1.75" x -16AN ORB - Black Anodized

Part Number: CHH-3516-1750-B

Not Yet Reviewed

Estimated Ship Date: Jan 23, 2026 if ordered today

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Estimated Ship Date: Jan 23, 2026 if ordered today

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

Part Number: PQX-5292337

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