Engine Cold Crack Repair, Drill size (inches): 5/16 and 51/64
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![[407-5303-27] HSS TAPER TAP (B-1)](https://ib.irontite.com/-D9b27603znMUKpqtegEE6XjJtLvMe6ns6G65nUw/407-5303-27-hss-taper-tap-b-1-340x255.jpg)
B-1 HSS Tapered Tap
SKU: 407-5303-27Need 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!
$80.89Piece
GO SOLID DIESEL IRON PLUG
SKU: 452-2608-40$8.08Piece![[407-5308-40] HSS TAPER TAP (G-OVRSZ)](https://ib.irontite.com/GaF1-1ohHx4AplOTaNqW8E7GzH7Zg44q71a1tz8v/407-5308-40-hss-taper-tap-g-ovrsz-340x255.jpg)
G-Oversize HHS Tap
SKU: 407-5308-40G-Oversize HSS Tapered Tap. High-speed steel tap for installing “GO” series ductile iron plugs in GM/Detroit Diesel 71 & 92 engines and other casting repair applications.
$389.96Piece
GO-3 DRILLED DIESEL IRON PLUG
SKU: 452-2608-43$12.70Piece
B-1 Automotive Ductile Iron Plugs, Box of 50
SKU: 401-2103-27Need 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.
$116.86Box![[407-5103-27] 5/16 HSS DRILL (B-1)](https://ia.irontite.com/v7ynNep6amgtk791E2idlRJ5H0tyvUMbHtZctfoK/407-5103-27-5-16-hss-drill-b-1-340x255.jpg)
B-1 5/16" HSS Drill Bit
SKU: 407-5103-27$9.62Piece![[407-5203-27] B-1 HSS TAPERED REAMER](https://ia.irontite.com/Bjn7djzevDTR7j5EEa_pxncYOBKijR0MaoMYwDo4/407-5203-27-b-1-hss-tapered-reamer-340x255.jpg)
B-1 HSS Tapered Reamer
SKU: 407-5203-27$131.36Piece![[452-2608-55] GO SHORT-DSL.IRON.PLG](https://ib.irontite.com/qdtP12R77AsCVpxfU7VfuiucsGGZN1A-G73JsKA6/452-2608-55-go-short-dsl-iron-plg-340x255.jpg)
GO Short Diesel Ductile Iron Repair Plug
SKU: 452-2608-55$31.48Piece
GO-4 DRILLED DIESEL IRON PLUG
SKU: 452-2608-44GO-4 sized Iron Plug with Drilled hole.
$12.70Piece