PitStopUSA.com - Fittings & Plugs

Pit Stop USA is proud to offer the most complete line of adapter fittings for aviation fluid transfer technology in the automotive performance market. With over 25 years of experience, we have earned the trust of top racing teams worldwide. Our standard range of AN adapters in aluminum and steel is complemented by an extensive line of specialty adapter fittings. We carry the most comprehensive selection of AN plumbing products from leading brands such as Aeroquip, A-1 Performance Plumbing, Allstar Performance, Earl's, Fragola, Magnafuel, Mr. Gasket, Peterson Fluid Systems, Russell, Vibrant Performance, XRP, and more. From racing hose and hose ends to fittings, adapters, brake lines, and more, Pit Stop USA has everything you need for high-performance plumbing. Trust us for all your aviation fluid transfer technology needs and experience the difference in performance today!

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AN Bulkhead Fittings and Adapters

Bulkhead Fittings are used to allow AN Plumbing to pass through a bulkhead or panel, and eliminate potential damage to the hose since there is no need for a grommet & this fitting eliminates the...More Details »

AN O-Ring Port Fittings and Adapters

AN O-Ring Port Adapters are used with oil pump, fuel rails, filters, filter adapters, and other parts that are machined with AN Female straight threads. The O-ring on these adapters is used to seal the fitting to other component.

AN Tube Nuts

Tube sleeves and tube nuts are used to transition from hardline tubing to AN fittings & AN plumbing. These parts are used with a 37 degree flaring tool that is used to form the end of the tubing.

AN Tube Sleeves

Tube sleeves and tube nuts are used to transition from hardline tubing to AN fittings & AN plumbing. These parts are used with a 37 degree flaring tool that is used to form the end of the tubing.

AN to AN Fittings and Adapters

AN to AN Adapters include fittings that have AN male & female AN Threads or flares on both ends of the fittings. These fittings are available in a wide variety of styles for most plumbing applications.

BSPT To AN Adapters

Pit Stop USA offers BSPT To AN Adapters at low everyday prices.

Banjo Fittings and Bolts

Many calipers are designed for use with a banjo style connection to the caliper. These adapters allow the use of AN brake hoses w/ these calipers. Be sure to use the correct brake banjo bolts and...More Details »

Caps and Plugs

Choose from several styles of caps and plugs. Most caps and plugs are available in 6061 aluminum, Plastic, and more durable 2024 aluminum.

Compression Ferrules

Replacement Ferrules (also called Olives) allow for re-use of compression style fittings.

Compression Fitting to AN Flare Adapters

Finish that plumbing project off professionally with Compression Fitting to AN Flare Adapters from Pit Stop USA.

Distribution and Y-Block Adapters

Distribution and "Y" blocks are an ideal way to plumb fuel systems, cooling systems & other applications that require joining more than one hose connection.

Dust Caps & Plugs

Pit Stop USA is The Online Motorsports Superstore! We feature Caps & Plugs at low everyday prices.

Female Inverted Flare to AN Fittings and Adapters

Inverted Flare Adapters are Normally Used on Power Steering, Fuel Pumps and Brake Systems. Inverted Flare Adapters are designed to screw into brake components (wheel cylinders, calipers, master...More Details »

Gauge Fittings and Adapters

Gauge Adapter Fittings Allow Installation of Electric or Mechanical Gauge Sending Units. Ideal for Use on Fuel Pressure Gauge, Oil Pressure Gauges, Temperature Gauges, Data Acquisition Systems,...More Details »

Grease Fittings

Hose Barb Fittings and Adapters

Hose barb fittings are ideal for general plumbing applications using traditional rubber hose. These fittings are available in straight, 45 degree and 90 degree versions that are suitable for most plumbing applications.

Hose Ends

Aviation fluid transfer technology was introduced to the automotive performance market over five decades ago and top racing teams everywhere rely on them. PitStopUSA.com carries the most extensive...More Details »

Inverted Flare Nuts

Flare nuts are used for building custom hard brake lines, transmission cooler lines, oil lines and fuel lines. 3/16" and 1/4" nuts are available to fit most master cylinder and...More Details »

Male Inverted Flare to Male AN Flare Fittings and Adapters

Male to Female Inverted Flare Fittings and Adapters

Metric Fittings and Adapters

Metric Adapters are Available for Most Common Applications. Use w/ Crush washer or sealing washer since the metric threads are straight threads and won't seal without these washers.

NPS to AN Fittings and Adapters

NPS to AN Fittings and Adapters are needed for applications that use this type of thread. Both NPT and NPS have the same thread angle, shape, and pitch (threads per inch). However, NPT threads are...More Details »

NPT to AN Fittings and Adapters

NPT to AN Adapters are used to transition from NPT threads to an AN Male or Female flare. There are several different styles of adapters for the most common plumbing applications.

NPT to BSPT Fittings and Adapters

NPT to BSPT Fittings and Adapters are required for applications that include this thread configuration. BSPT (British Standard Pipe Taper) is similar to NPT except there are important differences....More Details »

NPT to NPT Fittings and Adapters

NPT to NPT adapters have NPT threads on both ends of the fittings. These fittings are available in aluminum and stainless steel.

Power Steering Fittings and Adapters

These adapters are used with power steering systems. Depending on your power steering pump, you may need inverted flare fittings, or bump tube style fittings.

Push Lock Fittings

Push Lock Fittings are widely used in air suspension, Co2 lines, and brake line applications. Their ease of use and lightweight construction make them a popular choice for many applications.

Quick Disconnect Fittings and Adapters

Quick Disconnect Fittings provide so many advantages over traditional AN fittings, its no wonder so many racers and automotive enthusiasts are making the switch! If you want to eliminate these major problems, just make the switch too.

SAE to AN Fittings and Adapters

SAE to NPT Fittings and Adapters

SAE to NPT Fittings and Adapters are primarily used as Gauge Adapter Fittings. They Allow Installation of Electric or Mechanical Gauge Sending Units. Ideal for Use on Temperature Gauges and Many Other Uses.

AN-NPT Fittings and Components

At Pit Stop USA, we have everything you need for your automotive plumbing needs. From AN and NPT fittings to fuel line and hose fittings, we offer a wide range of products to help you assemble a...More Details »

PitStopUSA.com - Fittings & Plugs

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