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Choosing fittings and hoses
Fluid lines are sized by AN numbers: -6, -8 and -10 are common for fuel and oil. The AN number is also the thread, so a -8 hose end needs a -8 fitting. Mixing AN fittings with NPT or metric threads needs an adapter, and tapered pipe threads should not be reused.
Match the hose to the fluid. Rubber and PTFE-lined stainless braided hose handle fuel, oil and coolant, and each has its own rated temperature and pressure. Use fittings made for the hose type you buy, and pressure test the system before you run the engine.
Keep hoses away from heat and sharp edges, and use clamps or mounts so lines do not rub against moving parts.
Brands we carry in this category include Allstar Performance, Comp Cams, Proform, Ferrea, Aeroquip, Edelbrock and Brian Crower.
Common questions
What does AN mean on a fitting?
AN stands for Army-Navy and is a standard for thread and size. The number after AN is the size in sixteenths of an inch, so -8 is 1/2 inch.
How do I check a fitting is compatible?
Check the size, thread, connector or mounting details in the product title and description against what you have, and look at the photos. If you are unsure, contact our support team and we will help you check before you order.
What if the part does not fit?
Returns are accepted within 60 days, unused and in the original packaging, and return shipping is free. See Shipping & Returns for the details.
All Fittings Hoses and Valves products, page 9
Every product in this category, page by page. To see only the parts that fit your vehicle, use the vehicle selector at the top of the page.
- Brian Crower Dual Valve Spring Steel Retainer Kit For Honda Prelude H22 BC0030S $339.00
- CROWER 86107X1-16 Valve Locks - 7 Degree, For 11/32 In Valve Stem, Set Of 16 $86.99
- Moroso 1/2in NPT One Way Oil Check Valve Flapper Brass Spring Loaded $53.99
- Holley Tall Valve Cover Set Baffled Aluminum Red for GM LS-Series Engines $368.99
- Brian Crower BC3605-S Exhaust Valves +1mm Set For Subaru WRX STI EJ205 EJ257 $197.00
- Mishimoto For 2016+ Infiniti Q50/Q60 3.0T Ancillary Coolant Hose Kit - Blue $112.99
- For SBC C/6 2.020in Intake Valve $44.99
- Allstar Performance Hose 18in, 4 AN Female to 1/8in NPT Male, Stainless Steel $28.99
- Allstar 6" 3AN Braided SS Hose -3AN Straight to 90° PTFE ALL46304-6 $32.99
- Brian Crower High Mileage Dual Spring Retainer Set for 2000-2009 Honda Civic $402.00
- COMP Cams Valve Spring Shim Set 1.250 O.D. 0.015 Thickness 16 Pieces for Engines $33.99
- Brian Crower Dual Valve Spring Kit For Subaru EJ205 EJ207 EJ257 Titanium BC0610 $542.00
- Mishimoto For 6.4L Powerstroke Silicone Boot Kit Fits Ford F-250 & F-350 $250.99
- For SBC C/6 2.080in Intake Valve $44.99
- COMP Cams 3/8in 7 Degree Valve Locks for Chrysler Steel 602-16 $69.99
- Mishimoto For 91-99 Nissan Sentra W/ SR20 Black Silicone Hose Kit $116.99
- Supertech Dual Valve Springs Kit For Mazda Miata 1.8L High Performance Set $630.57
- Proform 141-905 Tall Chrome Steel Valve Covers Chevy SBC 262-400 V8 Bowtie Pair $117.99
- ALLSTAR Universal Hose Adapter 2.75in to 1.25in Plastic Clear $39.99
- For SBC C/6 2.020in Intake Valve $48.99
- Sb For Ford R.A.C.E. Set 351W ENGINE.69-7/10/83 $53.99
- ARP 155-6003 Rod Bolt Kit 8740 Chromoly for 429 460 BBF Set of 16 $97.99
- 1/4in Brake Line 40in Stainless Steel $40.99
- Gates 5/16in x 50ft Stainless Steel Heater Hose for 1983-2025 Mitsubishi/Nissan $71.99
- For BBC C/P 2.250 Intake Valve $49.99
- Proform 141-925 SBC Tall Valve Covers Slant Edge Gray Crinkle Bowtie Logo Pair $331.99
- Edelbrock Signature Chrome Valve Covers for AMC V8 Engines Steel Pair 4431 $96.99
- Moroso Big Block Chevy Crankshaft Scraper Kit 0.035in Zinc Coated $38.99
- COMP Cams 7 Degree Steel Valve Locks 11/32in Stem Standard Height Set of 16 $58.99
- Allstar Performance Aluminum Line Clamps 5/16 Inch 2-Piece Set of 4 $32.99
- Mishimoto For 05-06 Jeep Liberty 2.8 CRD Silicone Turbo Hose Kit * Fits Diesel $348.95
- ARP Universal Valve Cover Bolt Kit Chromoly Steel 1/4-20 Thread Black Set of 8 $29.99
- Moroso Valve Cover Gasket Set For Mopar B/RB 0.188in Steel Core Silicone 93055 $74.99
- Gates 28412 Heater Hose 3/4in x 50ft Safety Stripe Audi VW Universal 50 PSI $94.99
- Allstar 9 Inch 3AN PTFE Braided Stainless Hose -3 Straight to -3 90 Deg $32.99
- Allstar Performance 24-In Braided Stainless Steel Hose 3 AN Fittings $39.99
- Radiator Hose Adapter - 1 to 1-1/4 $78.99
- DURA-BOND Valve Spring Shims Set of 100 - 1.270 OD .570 ID .030 Thick $42.99
- Brian Crower KA24DE Dual Spring Titanium Retainer Seat Kit Nissan 240SX $459.00
- Proform 141-920 SBC Slant Edge Tall Valve Covers Bowtie Logo Polished Alum $331.99
- Ford Crankshaft Pulley Spacer 0.950 in Thick Aluminum M-8510-B351 $86.99
- Check Valve 6AN Male to 6AN Male Black Anodize $77.99
- Moroso Valve Cover Hold Down Tabs Small Block Chevy V6 Engines Set of 4 $43.99
- Allstar Performance Steel Quick Disconnect Kit 1/8in NPT Fittings $48.99
- Breather Push In For 3/4in $27.99
- Ford Valve Cover Fastener Set 1/4-20 Black Crinkle Logo for Ford Engines Set 4 $41.99
- Edelbrock Universal Sure Seat Dual Spring Valve Springs High-Performance Engines $182.99
- COMP Cams Valve Spring Locator Set 1.670 in O.D. 0.060 in Thickness - Set of 16 $88.99