Fabrication Parts

Fabrication Parts

Fabrication parts and materials provide the raw components needed to build, repair, and modify custom exhaust systems, turbocharger plumbing, intercooler piping, fuel system lines, oil routing, and engine bay heat management on performance and competition vehicles. Stainless steel tubing, titanium tubing, aluminum charge piping, mandrel bends, pie cuts, flanges, merge collectors, V-band clamps, O2 sensor bungs, AN fittings, PTFE hose kits, braided fuel and oil lines, heat shields, and welding supplies are the backbone of any serious custom fabrication project. Professional fabricators, race team mechanics, and advanced DIY builders who want full control over exhaust routing, charge pipe layout, or fuel system plumbing choose raw fabrication materials rather than pre-bent kits because custom fabrication allows fitment solutions that no universal kit can accommodate. Brands including Vibrant Performance, Ticon Industries, Stainless Bros, Radium Engineering, Fragola, and DEI provide the fabrication hardware catalog that makes professional-quality custom work achievable with proper tools and technique.

Popular Upgrades

Top-selling fabrication products include Vibrant Performance stainless mandrel bends, straight sections, and V-band clamps for exhaust and turbo piping, Ticon Industries titanium O2 sensor bungs, titanium brackets, and lightweight fasteners for weight-conscious racing builds, Radium Engineering PTFE hose kits, AN fittings, and fuel rail adapters for clean returnless and return-style fuel system plumbing, Stainless Bros stainless steel tubing in multiple wall thicknesses and diameters for cat-back and header-back exhaust fabrication, and DEI heat shield sleeves, wrap, and exhaust wrap for protecting wiring, fuel lines, and adjacent components from exhaust system radiant heat. AN fitting and hose end sets from Fragola provide clean, serviceable connections for oil cooler, fuel pressure, and catch can plumbing on engine bay builds.

Performance and Handling

Custom exhaust fabrication using mandrel-bent stainless or titanium tubing produces measurably lower exhaust backpressure than OEM crush-bent mild steel systems by maintaining consistent interior diameter around bends that preserve the velocity of exhaust gas flow through the system. Turbocharger plumbing built from properly sized charge pipe diameter with smooth mandrel bends and minimal directional changes reduces pressure drop in the intercooler circuit, which improves boost response and intake charge density at any given boost pressure setting. Heat shield wrap and sleeving applied to fuel lines, wiring harnesses, and coolant hoses within six inches of exhaust components extends the service life of those components by dramatically reducing the sustained surface temperature they experience during highway and track driving.

What type of tubing is best for custom exhaust fabrication?

304 stainless steel is the most widely used exhaust tubing material for street and mild performance builds because of its excellent corrosion resistance, good heat tolerance to approximately 870 degrees Celsius, and ease of TIG welding with common ER308L filler wire. 321 stainless is preferred for high-heat applications including turbocharger downpipes and collector sections because its titanium-stabilized alloy resists carbide precipitation at elevated temperatures that can cause inter-granular corrosion in 304 material. Titanium tubing from Ticon Industries is the premium choice for weight-critical race builds where exhaust weight reduction matters, though it requires pure titanium filler wire and more careful pre-heat management during welding to achieve clean, porosity-free welds.

What AN fitting size do I need for my fuel system?

AN dash size refers to the outer diameter of the tubing the fitting is designed for in 16ths of an inch, with AN-6 fittings sized for 3/8-inch tubing being common on naturally aspirated and mildly modified fuel systems up to approximately 600 horsepower, and AN-8 fittings for 1/2-inch tubing being appropriate for boosted and higher-horsepower builds that require greater fuel volume. AN-10 and larger are used on maximum-effort race engines where fuel delivery requirements exceed what smaller line diameters can provide at the fuel pump's operating pressure. Always confirm the inner diameter of the hose, the thread size of the fitting, and the fitting's pressure rating before ordering to ensure the components are compatible and adequate for the application's operating pressure.

Why These Parts Fit Right

Fabrication components in this collection are listed with diameter, wall thickness, alloy specification, and bend angle data so you can select the correct material and size for your specific fabrication project. AN fitting product pages include thread size, hose compatibility, and pressure rating information to prevent mismatched plumbing connections. Fast shipping and expert support are available for any fabrication material selection or specification question.

Complete your fabrication project with performance systems from our exhaust collection, find suspension hardware in our suspension catalog, and explore induction upgrades in our air intake systems collection.