Best Union Fuel System Fittings in 2026

Fuel cell bulkhead size is -6 AN

Radiused entries for unrestricted flow

Allows you to connect fuel lines to fuel cells

Size: Female AN10 to Male AN6, the thread size of 10an is 7/8-14 UNF, the thread size of 6an is 9/16-18 UNF.

Parameter: Max working pressure: 1500PSI.Temperature range: -65°F-252°F.

Material: Made of aluminum alloy 6061-T6, anodized black surface.

Use these fittings to adapter a -8 ORB port to a -6 hose end.

37 degree flare fitting (automotive standard)

Black Anodized Aluminum Finish

The female to male fitting adapter size: female 8an to male -8an (3/4-16 UNF) thread pipe connectors, 90 degree swivel hose fitting adapter

Forged swivel 6an elbow design fitting can be used with fuel, oil, gas, fluid, water, air line. 90 degree adapter fitting can allow for the connection of hose ends to other components like oil pumps, fuel pumps and fuel filters

The 90 degree adapter fitting forged swivel elbow design, swivel 360° elbow design allows you to get things reasonable tight while still maintaining the swivel functionality so that you can ensure a proper connection and positioning before doing that final. The swivel fitting has 37-degree sealing angle design assures leak free performance

Handy brass fittings can be used on electric fuel pumps and regulators

Fit type: Vehicle Specific

Package Dimensions: 11.938 H x 2.54 L x 7.874 W (centimetres)

GlowShift 3/8” Fuel Line Fuel Pressure Barbed Push Lock T-Fitting Adapter Allows Users to Install a Fuel Pressure Sensor to a 3/8" Inner Diameter Fuel Line

Features 3/8" (9.5mm I.D) Barbed Push Lock Fittings, 1/8-27 NPT Port for Fuel Pressure Gauge Sensor & 2 Hose Clamps

Manufactured from 304 Stainless Steel that Prevents Corrosion

JIC -6 AN male thread (9/16-18) to 3/8" tube hardline connector with 3/8 ID brass insert

Constructed of 6061 T6 aircraft grade lightweight aluminum material

Black anodized finish

For use with some regulators

Connect a 1/4" inverted flare pigtail to a regulator with 1/4" female NPT port(s)

Sold brass construction

PACK OF 10: Get 10 pieces of the Performance Tool W54240 1/4" x 28 Straight SAE Zerk Grease Fitting in one convenient pack.

1/4" X 28 STRAIGHT: This grease fitting features a 1/4 inch diameter and 28 thread count, making it compatible with a variety of grease fittings and grease guns.

SAE ZERK DESIGN: The SAE Zerk design of this grease fitting ensures a secure, leak-proof connection to your grease gun, ensuring efficient and effective lubrication.

The female to male fitting adapter size: female 10an to male -10an (7/8-14 UNF) thread pipe connectors, 90 degree swivel hose fitting adapter

The 90 degree bulkhead fitting can allow for the connection of hose ends to other components like oil pumps, fuel pumps and fuel filters

The 90 degree adapter fitting forged swivel elbow design, swivel 360° elbow design allows you to get things reasonable tight while still maintaining the swivel functionality so that you can ensure a proper connection and positioning before doing that final. The swivel fitting has 37-degree sealing angle design assures leak free performance

1/8" NPT to 4AN Adapter, 1/8 to 4AN

CNC Machined Aluminum

Anodized to provide corrosion resistance and shine.

What you will receive: there are a total of 2 pieces fitting adapters, and equipped with 2 pieces brass inserts in the package, adequate quantity can meet your daily use and replacement demands, which can replace the broken one or old one, and you can share with your close friends, family members, colleagues and people who need them

Sturdy material: these fuel fittings are made of quality aluminium alloy, firm and solid, will not break or deform easily, with metallic luster, can keep bright after long term use, the surface and edge are polished carefully, skillful workmanship makes them smooth to touch, do not worry they will scratch your hands or cars while using, not easy to wear and tear

Size details: this fuel line adapter fitting is measured approx. 1.77 inches in length and 0.59 inch in width, appropriate in size and light in weight, convenient for you to use and store; And which is 6 AN to 3/ 8 inch, the thread size of the 6 AN is 9/ 16 UNF, and it fits to 3/ 8 inch OD hardline, please measure before purchase

Package Dimensions: 28.397 H x 2.387 L x 21.209 W (centimetres)

Package Weight: 0.258 kilograms

Fit type: Vehicle Specific

EZ Coupler Bayonet Fitting

Creates an extension hose with F02-3101

Self-threaded and secure

Size: JIC -8 AN Male (3/4-16) Thread Flare to 3/8" SAE tube connector

Made of High Performance Lightweight 6061-T6 CNC Machined Billet Aluminum Material

Black Anodized Finish for Durability and Strength

Designed with the correct length handle to avoid over tightening

Each wrench has the fitting size stamped on it for easy identification

The set includes one AN 3, AN 4, AN 6, AN 8, AN 10, AN 12, AN 16 and AN 20 wrench, as well as a roll case

100% Brand New pair of fuel rail fitting adapters.

CNC Machined from 6061-T6 Aluminum. Black anodized for great appearance and anti-corrosion

Specification : 6 AN (male) to 3/8 & 5/16 (female) GM Quick Connect Straight Adapter Fitting

Function : Swivel Hose End Fitting usually used for Oil/ Fuel/ Water/ Fluid/ Airline etc. Connect engine transmission oil cooler, engine and air filtration system, engine and cooling system. Suitable for EFI systems rubber push-lock oil hose. (Not compatible with PTFE hose, nylon baided hose or stainless steel braided hose.)

Three Anti-leakage Designs : 1. Push on with 37- degree mating angle which provided superior sealing 2. Push on lock fitting raised edges stop the hose from sliding and prevent leakage 3.Aluminum hose cover for hose sliding and protection of hose ends, have a smooth snag-free performance.

Size : 8AN 90 degrees hose fitting; Push lock hose fitting made of lightweight 6061-T6 aluminum, black anodized surface has anti-corrosion effect.

COMPATIBILITY: Work well on model 4 valve ISC 8.3 liter and ISB 5.9 liter and others, Fit For Dodge RAM 2500 engine, Detroit DD15 engine, 24 valve Cummins etc. (not for ISM engines)

PERFORMANCE: This unique 3/4" Fuel Injection Flare Nut Socket gives the technician the ability to access and remove fuel pump lines with little effort

USAGE: Used with a ratchet and extension, the socket slides along the fuel line onto the flare nut which now can be loosened for pump removal, also used to tighten the fuel line nuts when the injection pump is reattached to the fuel lines

✿UNIVERSAL FITMENT:Mostly worked with coolant, fuel, diesel, oil, hydraulic fluid, pump gas, alcohol and air. NOT FIT E85. 6an nylon braided hose can be used in brake system, pump, oil return, fuel return system, turbo cooler system and transmission system.

✿HIGH PERFORMANCE:The black braided nylon fuel hose features an all-black nylon fiber braided outer cover and a Chlorinated Polyethylene (CPE) synthetic rubber inner line. Maximum Working Pressure (psi): 500 psi. Bursting Pressure (psi): 2000psi. Working Temperature: -40℉ to 257℉ (-40℃ to 125℃).

✿MATERIAL:Nylon fiber and stainless steel braid 6an cover for excellent flexibility and resistance to abrasion. 3/8 Braided nylon CPE fuel line can be used for a long time at -40℃ to 100℃ oil temperature and has about two-year life. Installation in corrosive environment is not remommended, otherwise 6an braided fuel line's life will decrease. Outer nylon braided has excellent inflaming and safer to use.

ANTI-CORROSION - This fuel line T-fitting adapter is made from 304 stainless steel that prevents Corrosion.

LEAK-FREE - The barbed design increase the sealing of adapter and fuel line and The two hose clamps are for installation in tight-fittings and secure the vehicle’s fuel line to the barbed fittings for a leak-free connection.

FUNCTION - Fuel line fuel pressure barbed push lock t-fitting adapter allows users to install a fuel pressure sensor to a 3/8 In inner diameter fuel line,T-fittings allows you to tee off your vehicle,s fuel line for accurate fuel pressure readings directly from the source.Protect your engine!

Female -6 AN (9/16"x18) swivel to 3/8 inch barb fuel line quick disconnect tube adaptor, straight

Made of High Performance Lightweight 6061-T6 CNC Machined Billet Aircraft Aluminium Material

Black Anodized Finish for Durability and Strength

Dorman Fuel Line Connectors, Retainers & Repair Kit (800-082)

Fuel Line Quick Connector That Adapts 3/8 In. Steel to 3/8 In. Nylon Tubing.

Fitting Attachment End 1: Quick Disconnect ; Fitting Attachment End 2: Barb

Features 8mm (5/16") Barbed Fittings, 1/8-27 NPT Female Thread Port for Fuel Pressure Gauge Sensor & 2 Hose Clamps to Secure Fuel Line to T-Fitting

Packing Including: 2 Brass Barbed Fittings 5/16"(8mm) ，2 stainless steel clamp with handle and Teflon tape

Fuel Line Fuel Pressure T-Fitting Adapter Allows Users to Install a Fuel Pressure Sensor to the Fuel Line

JIC 4 AN male flare to female AN 4 hose union take off pipe fitting with 1/8" gage port

Made from aerospace-quality lightweight 6061 t6 cnc machined billet aluminum alloy

Black Anodized Finish for Long Last, Strength and Durability

3/8 inch national pipe thread to 3/8 inch hose barb

90 degree elbow

Triple chrome plated

Material: 304 Stainless Steel; Highly resistant to corrosion.

Inlet Thread Size: 1/8" NPT Male; Outlet Thread Size: 1/8" NPT Female;

Center Tap Thread Size: 1/8" NPT Outlet Female.

AN8 JIC -8 AN female to AN8 male flare 3/4-16 thread fuel check valves for select fuel cells

Black anodized finish, made of lightweight 6061 t6 cnc machined billet aluminium alloy

Roll-over valve #8, for select fuel cells, When fitted its stays open which allows the cell/tank to breathe

Design for Push-on hose ends. Light-weight, Low pressure application

Material: High-Grade Synthetic rubber tube with Polyester Braided and Chloroprene Elastomer Shielding

Operation Temperature Ranges from -40F to 210F

For Use With: 10mm (3/8") ID (inner diameter) hose. Valve can safely be used with water, fuel, gas, diesel, and oils.

Includes: (ONE) check valve and (TWO) high quality stainless steel smooth edge band clamps that will not cut into your hoses

Valve is made from high quality aluminum and measures about 2.36 inches long by .86 inches wide