12mm X 1.75 Thread Cleaning Tap 6in OAL

The 12mm X 1.75 Thread Cleaning Tap 6in OAL from ARP is an essential precision tool for any serious automotive mechanic or engine builder working with metric fastener applications. This thread cleaning tap addresses a critical need in high-performance engine work, cylinder head restoration, and custom engine block preparation where damaged or contaminated threads must be restored to factory specifications. Whether you're rebuilding a foreign-manufactured engine, repairing stripped bolt holes, or preparing critical engine components for ARP fastener installation, this specialized tap delivers the precision threading restoration that separates professional results from costly mistakes.

ARP's 12mm X 1.75 metric thread cleaning tap is engineered with precision-ground flutes and hard-wearing cutting edges designed to remove carbon buildup, corrosion, and minor damage from existing threads without enlarging the hole diameter. The 6-inch overall length provides excellent reach into deep engine passages and recessed fastener locations common in cylinder heads and intake manifold bosses. The 12mm diameter with 1.75mm pitch matches the ISO metric standard used across European and Japanese performance vehicles, ensuring compatibility with OEM specifications and ARP's premium fastener lineup. The compact yet durable design makes this tap reliable for both single-use restoration jobs and repeated production applications in engine shops.

This cleaning tap is indispensable for mechanics rebuilding forced-induction engines, restoring vintage import performance vehicles, or preparing components for ARP head studs and engine fastener kits. Machinists and engine builders rely on thread cleaning taps to preserve original bolt hole locations and avoid the expense of helicoil inserts or oversized fasteners. Proper use requires cutting fluid appropriate for the base metal being tapped—typically a quality machine oil for aluminum cylinder heads or specialized threading fluid for cast iron engine blocks. This tool belongs in every professional shop's threading kit and is particularly valuable for anyone committed to precision engine assembly and long-term fastener reliability.