Proform Parts Line Fitting Wrench Set

Proform Parts Line Fitting Wrench Sets: Precision AN Tools Built for Performance Plumbing

When it comes to working on high-performance fuel, oil, and coolant lines, using the right tool is the difference between a clean job and a costly mistake. Proform Parts has built a well-earned reputation in the performance automotive aftermarket, and their line fitting wrench sets are a prime example of why enthusiasts and builders trust the brand for specialty tooling.

Award-Winning AN Wrench Design

Proform's AN fitting wrenches earned recognition at the 2007 SEMA Show — easy-to-adjust, billet aluminum tools designed as the perfect non-marring solution for underhood plumbing work. That kind of industry recognition is a testament to genuine innovation, not just marketing. The patented adjustable design sets these wrenches apart from fixed-size alternatives, letting a single tool handle a wide span of AN fitting sizes without the need for a separate wrench for every line.

Billet Aluminum Construction with a Blue Anodized Finish

Proform's line fitting wrenches feature a blue anodized finish and are made from high-quality billet aluminum for durability and longevity. The aluminum construction keeps the tools lightweight enough to maneuver in tight engine bay spaces, while the anodized surface resists corrosion and gives the wrenches a professional shop-quality look. Crucially, the soft aluminum-on-aluminum contact means these tools are especially useful when trying to prevent scratching expensive hose fittings, during fuel log adjustment, and when tightening fuel inlet fittings.

Stubby "Compact" and Standard Adjustable Models

Proform offers multiple configurations to cover the full range of AN fitting sizes found in a typical performance build. The set comes with two wrenches — one that fits sizes -3AN to -8AN and one that fits sizes -10AN to -20AN — and the design is patented. For builders who need maximum versatility in a single purchase, Proform's aluminum AN wrench set (PRF-66978) is sized for -03 to -20AN fittings and features color coding for fast identification. Sets are sold as either individual wrenches or as a complete kit. The compact "stubby" versions are specifically engineered for confined underhood spaces where a full-length wrench handle simply won't fit.

The Proform Approach to Specialty Tooling

Proform Parts (Specialty Auto Parts U.S.A., Inc.) is a leader in the high-performance automotive aftermarket, engineering and manufacturing creative products from intelligent concepts, with the goal of providing performance enthusiasts with innovation, quality, and affordability. With dozens of patents, thousands of SKUs, and millions of satisfied customers, Proform has brought that philosophy to enthusiasts for over 30 years. Their line fitting wrenches are a natural extension of a whole line of popular and easy-to-use engine builders' tools made to exacting specifications.

Whether you're assembling a braided fuel system for a street machine, dialing in a race car's plumbing, or simply tightening a loose fitting on a performance-oriented build, Proform's line fitting wrench sets deliver the right combination of fit, protection, and value. Explore the full range of Proform Parts tools and accessories to outfit your build from the inside out.