SKU: RHP5468-04-2
UPC: 848487007903
MPN: 5468-04-2
The REDHORSE PERFORMANCE 5468-04-2 is a double-ended aluminum AN wrench built to fit 4AN and 6AN B-nut fittings from a single tool. It's made for fabricators, racers, and home builders running braided line in fuel systems, oil coolers, and hydraulic brake circuits. Each end is cut to the exact hex profile of its fitting size, so the wrench seats fully on the B-nut instead of rounding off the corners. If you're plumbing an engine swap or a turbo setup that mixes -4 and -6 lines, this one wrench covers both common sizes without forcing a tool swap mid-assembly.
The body is machined from 6061 T-6 aluminum and finished in black anodize, the same material spec REDHORSE PERFORMANCE uses across its 5468 wrench series. Aluminum is the deliberate choice here: it's softer than the anodized fittings it turns, so it grips and tightens B-nuts without scratching or galling the colored finish that steel wrenches tend to mar. The 4AN end and 6AN end are sized to their respective B-nut hex dimensions for full-contact engagement, which spreads load across the flats and reduces the risk of slipping under torque. The double-ended layout keeps two of the most-used AN sizes on one lightweight tool that lives easily in a fabrication kit or pit box. Pair it with the matching AN wrench set to cover larger line sizes.
Reach for this wrench any time you're assembling or backing off AN hose ends and adapters where finish matters. It earns its place during fuel cell plumbing, dry-sump oil routing, brake and clutch line builds, and any job where you're snugging a B-nut against an adapter without wanting to chew up the anodizing. Builders who run color-matched fittings will appreciate that it tightens without leaving tool marks. Browse the rest of our black wrenches and broader shop tools to round out an AN fitting kit for the bench or the trailer.
It fits 4AN and 6AN B-nut fittings, one size on each end. The B-nut is the nut you turn to install an assembled fitting onto an adapter or accessory. Having both sizes on one tool covers the two most common AN line sizes used in fuel and brake plumbing.
The 6061 T-6 aluminum body is softer than the anodized fittings it turns, so it tightens B-nuts without scratching or galling the colored anodized finish. Steel wrenches are more likely to mar that finish. The trade-off is a tool sized specifically for AN hardware rather than general use.
It is custom-fitted for REDHORSE PERFORMANCE 4AN and 6AN B-nut fittings. AN sizing is a standard, so it generally engages other manufacturers' -4 and -6 B-nuts as well, but the closest fit is with REDHORSE PERFORMANCE hose ends and adapters.
Each AN fitting has two sides. The B-nut is the swivel nut you turn to install an assembled fitting onto a vehicle, accessory, or adapter. This wrench is profiled for the B-nut hex, which is the side you tighten during installation.
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