Aluminum Adjustable AN Wrench Set -3an to -20an

The Aluminum Adjustable AN Wrench Set -3AN to -20AN from PROFORM is a precision tool engineered for technicians and enthusiasts working with fluid systems, fuel lines, and hydraulic fittings across automotive, aerospace, and motorsport applications. AN (Army Navy) fittings require specialized wrenches that grip flats precisely without rounding, making this two-piece aluminum set an essential addition to any serious mechanic's toolkit. The set covers critical sizes from -3AN through -20AN, addressing the vast majority of real-world system configurations found in high-performance engines and custom builds.

Constructed from aluminum and finished in blue anodize, the Aluminum Adjustable AN Wrench Set -3AN to -20AN utilizes a single-end design that reduces weight while maintaining structural integrity under typical wrench loads. The blue anodized finish provides corrosion resistance and improves visibility in engine bays and under-vehicle work. Two-piece configuration—one wrench covering -3AN to -8AN and a second handling -10AN to -20AN—ensures optimal leverage and fit for each size range, preventing the flex and slippage common with oversized universal wrenches. Aluminum construction keeps the overall weight at just 1.07 lbs, allowing extended use without fatigue.

This wrench set is ideal for fuel system upgrades, nitrous oxide plumbing, cooling system modifications, and any project requiring AN-fitting connections. Mechanics servicing fuel injectors, bypass lines, and custom fuel rails will find these wrenches indispensable for leak-free assembly and maintenance. Compact dimensions (6.35 x 1.05 x 13.25 inches) make the set easy to store in a toolbox or roll bag, ready for on-track or roadside repairs. Compatible with all standard AN male and female fittings (-3 through -20), the set delivers the precision grip needed to prevent cross-threading and fitting damage.