Engine Block Crack Repair Products, Drill size (inches): 5/16 and 1-1/4

Need to thread castings for a perfect seal with your Irontite B-1 Threaded Plugs? The [407-5303-27] HSS Tapered Tap delivers the exact threads required for a tight, reliable fit. Get the job done right the first time!

J, J-Drilled HSS Tapered Tap. High-speed steel tap for preparing holes for “J” Solid and “J-2 Drilled” ductile iron plugs in casting repair.

Need reliable plugs for your Irontite cold crack repairs? This box contains 50 high-quality B-1 automotive ductile iron plugs, essential for the Irontite system’s effective crack closure in metal castings.

J-2 Drilled Diesel Ductile Iron Repair Plug. Drilled ductile iron plug with a ½” hole, 1 ½” thread length, and 1.312” small end diameter. Used for cold crack repair in diesel castings.

J HSS Tapered Reamer. Used for reaming injector holes in Cummins ISX15/QSX15 engines prior to tapping for “J” Plugs.

Need a reliable seal for your diesel engine? Look no further than our J size Solid Iron Diesel Plugs/Pins. Made from premium ductile cast iron and stress-relieved for optimal performance, these plugs offer a durable and long-lasting solution for your engine’s needs.

Enlarging Counter Bore Cutter (1-¼” Diameter) for Cummins ISX15/QSX15 DOHC & SOHC Engines. Used to prepare the injector hole for repair.