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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 1530

Transmission Line Adapter, Aluminum, Clear Anodized, Male 1/8 in. NPS, Male -6AN, Each

Part Number: SUM-220572C

5.0 out of 5 stars ( 1 )

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LINE ADAPTER

Part Number: RUS-644143

5.0 out of 5 stars ( 1 )

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Fuel Line Adapter, Billet Aluminum, Black Anodized, Late Model Fuel Rail, 5/16 in. Fuel Tube, 1/8 in. Ports, Each

Part Number: NOS-17003NOS

4.5 out of 5 stars ( 2 )

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Fuel Line Fitting, -6 AN Male Flare to 5/16 in. Female EFI Quick Connect Adapter, Aluminum, Silver Anodized, Each

Part Number: DWK-6-02-0121

Not Yet Reviewed

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Fuel Line Adapter Fittings, Female Threads, 1/2-20 in., Brass, Natural, Each

Part Number: BDR-B-9243-A

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Fuel Line Repair Kit, Male Thread, M16 x 1.5, 3/8 Nipple, 4 in. length, Steel, Each

Part Number: RNB-800-170

5.0 out of 5 stars ( 3 )

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Fittings, Fuel Line Adapters, Straight, Black, 5/16 in. Female Quick-connect, 6mm Hose Barb, Pair

Part Number: RNB-800-188

5.0 out of 5 stars ( 1 )

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Fitting, Fuel Line Adapter, Straight, 7/16 in. Inverted Flare Male Threads, 1/4 in. Hose Barb, Each

Part Number: RNB-785-400

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5 Fuel Line Quick Connectors- Adapts 3/8 In. Steel To 5/16 In Nylon Tubing

Part Number: RNB-800-085-5

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Fuel Line Adapter, Straight, Polished, 14mm Male Spring Lock, 5/16 in. Hose Barb, Ford, Lincoln, Mercury, Each

Part Number: RNB-800-131

5.0 out of 5 stars ( 1 )

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Fitting, Fuel Line Adapter, Straight, M16 x 1.5 Female Threads, 3/8 in. Nipple, Each

Part Number: RNB-800-078

5.0 out of 5 stars ( 1 )

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Fuel Line Adapter Fittings, 1/4 in. Male NPT, 5/16 in. Male NPT, Straight, Brass, Natural, Each

Part Number: SBC-9180K

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Fitting, Adapter, AN to Tubing, Straight, Aluminum, Black/Silver Anodized, -6 AN, 3/8 in., Each

Part Number: RUS-639213

4.0 out of 5 stars ( 2 )

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Fuel Line Adapter Fittings, Fuel Line Adapters, Straight, 1/4 in. Male Quick-connect, 5/16 in. Hose Barb, Steel, Natural, Pair

Part Number: URR-K160

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5/16 GM Line Adapter 2

Part Number: URR-K070

Not Yet Reviewed

Estimated Ship Date: Dec 30, 2025 if ordered today

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Estimated Ship Date: Dec 30, 2025 if ordered today

3/8 GM Line Adapter 2

Part Number: URR-K075

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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: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

2015-2020 BMW F80 M3/M4 Oil Line Fitting Adapter Kit

Part Number: MIO-MMOCF-F80

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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

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

Part Number: MOR-65140

4.81 out of 5 stars ( 16 )

Estimated Ship Date: Tomorrow

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Fitting, Adapter, AN to Tubing, Straight, Aluminum, Red/Blue Anodized, -8 AN, 1/2 in., Swivel, Each

Part Number: RUS-639220

5.0 out of 5 stars ( 5 )

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Fitting, Coupler, Union, Hose Barb to Hose Barb, 90 Degree, Steel, Galvanized, 3/8 in. Hose Barb, 3/8 in. Hose Barb, Pair

Part Number: URR-3890

1.0 out of 5 stars ( 1 )

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Fitting, EFI Adapter, Straight, Female -8 AN to 3/8 in. Male Quick Connect, Aluminum, Black Anodized, Each

Part Number: DWK-6-02-0133-B

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Fitting, EFI Adapter, Straight, 3/8 Female Quick Connect to 3/8 in. Female Quick Connect, Aluminum, Black Anodized, Each

Part Number: DWK-6-02-0136-B

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8AN Male Flare to 5/16 Inch Female EFI Quick Connect Adapter, Anodized Matte Black

Part Number: DWK-6-02-0143-B

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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 )

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