Irontite Engine Block Crack Repair Products
92 results(1 filter applied, reset)Irontite Ductile Plugs use the finest quality iron to make your crack repair as tight and long lasting as can be. Merging metal has always been the best solution to restoring cracked cylinder blocks and heads.

C-1 Special Diesel Ductile Iron Repair Plug
SKU: 452-2604-24$10.09Piece
D-1 SPECIAL DIESEL IRON PLUG
SKU: 452-2604-94It’s made from ductile cast iron, which is a type of cast iron that’s more malleable and resistant to cracking than traditional cast iron.
$12.15Piece![[407-5302-35] HSS TAPER TAP (A-235)](https://ib.irontite.com/GrbLjlbiDQq7NhoA6nA7rT0wMbl2gwFZiIMiBx5H/407-5302-35-hss-taper-tap-a-235-340x255.jpg)
A-235 HSS Tapered Tap
SKU: 407-5302-35$54.88Piece![[407-5311-41] H-OVERSIZED HSS TAPERED TAP](https://ia.irontite.com/HSDTvzIrl5ShwjLrW35yX54MBZDCfdd6fkUm92R_/407-5311-41-h-oversized-hss-tapered-tap-340x255.jpg)
H-Oversize HSS Tapered Tap
SKU: 407-5311-41H-Oversize HSS Tapered Tap. HO w/ Pilot Hole. High-speed steel tapered tap for use with HO Ductile Iron Plugs.
$532.81Piece
Lo-Temp Heat Tabs (Pack of 100) Alloy flows at 220-235 degrees F.
SKU: 411-5811-90Need to monitor temperatures in the 220-235°F range? This pack of 100 Lo-Temp Heat Tabs provides a simple and reliable way to identify if a specific temperature has been reached or exceeded. SKU: 411-5811-90
$64.50Pack![[407-5304-20] C, C-1, C-1 SPECIAL HSS TAPERED TAP](https://ia.irontite.com/DDizAtwh1eVS8iCfMyRgGh3_Sidoqe6BE6kQssXb/407-5304-20-c-c-1-c-1-special-hss-tapered-tap-340x255.jpg)
C, C-1, C-1 Special HSS Tap
SKU: 407-5304-20$166.26Piece![[452-2607-80] G SOLID DSL.IRON.PLUG](https://ia.irontite.com/fqs6hBdBBt8U2IBqVXk57d3L_SgbJr_U_BT9buIq/452-2607-80-g-solid-dsl-iron-plug-340x255.jpg)
G Solid Diesel Ductile Iron Repair Plug
SKU: 452-2607-80$6.95Piece![[452-2610-80] H SOLID - DSL.IRON.PLUG](https://ia.irontite.com/RFAr9Y5BKNZXVAVaEIUaJZc810ZeFaWLD9h3HiQf/452-2610-80-h-solid-dsl-iron-plug-340x255.jpg)
H Solid Diesel Ductile Iron Repair Plug
SKU: 452-2610-80$10.30Piece![[407-5303-86] HSS TAPER TAP (B-1/8) CS](https://ib.irontite.com/yrgmdwsnaBE6aMe7l_80xMuoPrmISqYC89PPuoIg/407-5303-86-hss-taper-tap-b-1-8-cs-340x255.jpg)
B-1/8" HSS Tapered Tap
SKU: 407-5303-86$51.88Piece![[407-5204-20] HSS TAPER.REAM(C C1 SPCL)](https://ia.irontite.com/Dt_0bW20T7wFmFIejZS714TbOsRVj9L5fAblygAW/407-5204-20-hss-taper-ream-c-c1-spcl-340x255.jpg)
C, C-1, C-1 Special HSS Tapered Reamer
SKU: 407-5204-20$151.63Piece![[452-2615-84] 1-1/4-12 STANDARD CATERPILLAR PLUGS](https://ib.irontite.com/g9ukoKIkKAcKc897_TwtAZc04ucAH6D-pr-4738b/452-2615-84-1-1-4-12-standard-caterpillar-plugs-340x255.jpg)
1-1/4- x 12 Thread (Standard) Caterpillar Ductile Iron Repair Plug
SKU: 452-2615-841 ¼ inch threaded ductile iron plug used in cold casting repairs.
$56.42Piece![[407-5301-55] HSS TAPER TAP (A-155)](https://ia.irontite.com/h1_25cKmoxl8uIszFxCDA5aEcfgQgA7RqWqKAgwG/407-5301-55-hss-taper-tap-a-155-340x255.jpg)
A-155 HSS Tapered Tap
SKU: 407-5301-55$92.19Piece![[407-5310-80] HSS TAPER TAP (H)](https://ia.irontite.com/TyoCoNXZeUoRqe6uw1A5jALWaLAwqDqytDO5oJjt/407-5310-80-hss-taper-tap-h-340x255.jpg)
H-HSS Tapered Tap
SKU: 407-5310-80H-HSS Taper Tap. High-speed steel taper tap for installing “H” series ductile iron plugs in casting repair.
$362.74Piece![[407-5302-00] HSS TAPER TAP (A-200)](https://ia.irontite.com/fyauWDJ39mBU2E6_bZ9ySJboENpIi7lqHG_IfRVj/407-5302-00-hss-taper-tap-a-200-340x255.jpg)
A-200 HSS Tapered Tap
SKU: 407-5302-00$68.52Piece![[407-5302-36] HSS TAPER TAP T.N.(A-235)](https://ib.irontite.com/g0UHogKHzv8akyJV5r3C1vthikc1G2VWYGAmyDFF/407-5302-36-hss-taper-tap-t-n-a-235-340x255.jpg)
A-235 HSS Tapered Tap (Longer Lasting)Titanium Nitrite Coated
SKU: 407-5302-36$54.68Piece![[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
J, J-DRILLED HSS TAPERED TAP
SKU: 407-5313-10J, 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.
$435.21Piece![[407-5207-80] G - HSS TAPER REAMER](https://ib.irontite.com/5ogNj0bzG6nhom5fyfrK8Wmchxr72-vAkEdA2HuF/407-5207-80-g-hss-taper-reamer-340x255.jpg)
G HSS Tapered Reamer
SKU: 407-5207-80$258.72Piece![[407-5304-90] D, D-1, D-1 SPECIAL HSS TAPERED TAP](https://ia.irontite.com/nz_qRo02nyNubBfzZh7kmemPiafpD77JZLY7WnxE/407-5304-90-d-d-1-d-1-special-hss-tapered-tap-340x255.jpg)
D, D-1, D-1 Special HSS Tap
SKU: 407-5304-90$167.20Piece![[401-2104-91] D-1 AUTOMOTIVE IRON PLUGS -BOX OF 25](https://ia.irontite.com/0AkAWd4RhOR3SqZGqwIpbKqYowtC6vhXDhaRIRbL/401-2104-91-d-1-automotive-iron-plugs-box-of-25-340x255.jpg)
D-1 Automotive Ductile Iron Plugs, Box of 25
SKU: 401-2104-91$138.76Box![[407-5104-20] 25/64 HSS DRL (C C-1 SPCL](https://ib.irontite.com/yH0U8p-IJY5LTtKyk4JQFE7NMR7LVm3-seoP02yc/407-5104-20-25-64-hss-drl-c-c-1-spcl-340x255.jpg)
C, C-1, C-1 Special 25/64" HSS Drill Bit
SKU: 407-5104-2025/64 inch HSS Drill Bit
$14.50Piece![[452-2607-83] G-3 DRILLED-DSL.IRON.PLGS](https://ib.irontite.com/-y54PdAK_IfRdyzTUIgp1TGf9WKR24N5vJ46om5q/452-2607-83-g-3-drilled-dsl-iron-plgs-340x255.jpg)
G-3 Drilled Diesel Ductile Iron Repair Plug
SKU: 452-2607-83$11.23Piece![[407-5305-90] E, E1, E1-SPECIAL HSS TAPERED TAP](https://ia.irontite.com/VGxgvHaJu-ZXTNHK3k1GsN_0NAi7Us_U_GoQ9djH/407-5305-90-e-e1-e1-special-hss-tapered-tap-340x255.jpg)
E, E-1, E-1 Special HSS Tap
SKU: 407-5305-90High-Speed Steel (HSS) Tapered Tap designed for creating threads for E, E-1, and E-1 Special plugs, including diesel ductile iron plugs.
$172.88Piece
E-1 SPECIAL DIESEL IRON PLUG
SKU: 452-2605-94It’s used to repair cracks or holes in various engine components.
$13.71Piece$6.86Piece
GO SOLID DIESEL IRON PLUG
SKU: 452-2608-40$8.08Piece
3/4-12 J STANDARD CATERPILLAR PLUG
SKU: 452-2615-24$53.15Piece![[452-2615-28] 3/4-12 OVERSIZE CATERPILLAR PLUG](https://ib.irontite.com/3La-PmZcb_mFmqTr14Cm2tB4kUtYJ6PqNG4tkBuW/452-2615-28-3-4-12-oversize-caterpillar-plug-340x255.jpg)
3/4" x 12 Thread (Oversize) Caterpillar Ductile Iron Repair Plug
SKU: 452-2615-28$53.15Piece![[407-5307-80] HSS TAPER TAP (G)](https://ib.irontite.com/MkKBXulwUkL9O98p8HpMkOmpgHBZ2cpMrCdWGNB9/407-5307-80-hss-taper-tap-g-340x255.jpg)
G HSS Tapered Tap
SKU: 407-5307-80$207.51Piece![[401-2105-90] E AUTOMOTIVE IRON PLUGS - BOX OF 25](https://ia.irontite.com/rbOM8uXNIl_hUvJ194117URS9GKyKt96g1oPFeA0/401-2105-90-e-automotive-iron-plugs-box-of-25-340x255.jpg)
E Automotive Ductile Iron Plugs, Box of 25
SKU: 401-2105-90E Automotive Ductile Iron Plugs sold in boxes of 25. Features 1-inch thread length and 0.590-inch small end diameter. Recommended drill, reamer, and tap part numbers provided for installation within Irontite’s crack repair system.
$98.85Box![[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![[411-5811-81] HEAT TABS (100/PKG)](https://ia.irontite.com/Fol-VLn-YwiQitKUfNzO6Qq9eQrDcX1l1FANGaw9/411-5811-81-heat-tabs-100-pkg-340x255.jpg)
Heat Tabs (Pack of 100) Alloy flows at 255-260 degrees F.
SKU: 411-5811-81Need to monitor temperatures in the 255-260°F range? This pack of 100 Heat Tabs offers a straightforward and dependable way to visually confirm if a specific temperature has been reached or exceeded.
$53.25Pack
7/8-12 J STANDARD CATERPILLAR REPAIR PLUG
SKU: 452-2615-44$53.15Piece
A-235 13/64" HSS Drill Bit
SKU: 407-5102-35$4.94Piece![[407-5132-00] 11/64 HSS EXT.DRILL(A-200](https://ib.irontite.com/QWUpbqgT11pqdTr-131zumBwS9ODOIBCrJJI_G0Z/407-5132-00-11-64-hss-ext-drill-a-200-340x255.jpg)
A-200 11/64" HSS Extended Drill Bit
SKU: 407-5132-00$18.18Piece![[452-2610-82] H-2 DRILLED DSL.IRON.PLUG](https://ib.irontite.com/Asxca2qYIZdplcMjAUiCmRHo46wTBEUsVaFwvwp4/452-2610-82-h-2-drilled-dsl-iron-plug-340x255.jpg)
H-2 Drilled Diesel Ductile Iron Repair Plug
SKU: 452-2610-82$15.58Piece![[411-5811-11] COPING SAW BLADES](https://ia.irontite.com/JKS7PWZ-QrM6H2aYUJ6ARXpe2B4Ph1myaYUSX8ZE/411-5811-11-coping-saw-blades-340x255.jpg)
Coping Saw Blades (replacements for Coping Saw)
SKU: 411-5811-11Coping Saw Blade (each)
$3.40Piece![[403-3130-12] 12MM X1.75 THIN.MTRC.REG](https://ib.irontite.com/KC5KsYxy1-H74lwfg4JYI309yJKG8lVZGJdUiplH/403-3130-12-12mm-x1-75-thin-mtrc-reg-340x255.jpg)
12mm x 1.75 Thinwall Insert, Metric, Regular Pitch
SKU: 403-3130-12Stripped a 12mm x 1.75 thread? Don’t sweat it! The Irontite thin wall threaded insert [403-3130-12] delivers a quick and robust repair, creating threads stronger than the original in many cases. Get back to work with confidence!
$9.97Piece![[407-5105-90] E, E1, E1-SPECIAL 9/16” HSS DRILL BIT](https://ib.irontite.com/Qc_X1azlVXM3gRedEB4byIXQnduBfeIGaf-icVlj/407-5105-90-e-e1-e1-special-9-16-hss-drill-bit-340x255.jpg)
E, E-1, E-1 Special 9/16" HSS Drill Bit
SKU: 407-5105-90$44.92Piece![[403-3122-04] 3/8"-16 THIN WALL INSERT-COURSE](https://ia.irontite.com/dOm0vsh2v_rZxOcx5i1Pyh3JMxcTxAYiXFIJovVa/403-3122-04-3-8-16-thin-wall-insert-course-340x255.jpg)
3/8"-16 Thinwall Insert, Course Thread
SKU: 403-3122-04Stripped a ⅜”-16 thread? Get a solid fix fast with the Irontite thin wall insert [403-3122-04]! Restore strength and ensure a reliable hold with this easy-to-install solution.
$4.54Piece
H-4 DRILLED DIESEL IRON PLUG
SKU: 452-2610-84$15.58Piece![[407-5204-90] HSS TAPER.REAM(D D1 SPCL)](https://ia.irontite.com/zOU48Z8YGmX3mlJCTf3NwRhCg2DFPcfMDzcDr1FM/407-5204-90-hss-taper-ream-d-d1-spcl-340x255.jpg)
D, D-1, D-1 Special HSS Tapered Reamer
SKU: 407-5204-90HSS Tapered Reamer for Irontite Casting Crack Repair Prepares holes for D, D-1, D-1 Special ductile iron plugs, extending tap lifespan, especially when working with thick castings.
$273.47Piece
E-1 SOLID DIESEL IRON PLUG
SKU: 452-2605-91E-1 Solid Diesel Iron Plug sold individually. Specifications include a 1 7/16 inch thread length and a 0.590 inch small end diameter. Recommended drill, reamer, and tap part numbers provided.
$8.69Piece![[407-5102-00] 11/64 HSS DRILL(A-200)](https://ia.irontite.com/6opdQOZsGfxd2yJkdAQfxg7i9iZPn__Zy7lDo1fJ/407-5102-00-11-64-hss-drill-a-200-340x255.jpg)
A-200, TPA 11/64" HSS Drill Bit
SKU: 407-5102-00$4.21Piece![[452-2615-78] 1-1/8-12 OVERSIZE CATERPILLAR PLUG](https://ib.irontite.com/5Glhmg7R_vf9CDUXsatVcQ6S0c--JLomPfChLa-a/452-2615-78-1-1-8-12-oversize-caterpillar-plug-340x255.jpg)
1-1/8" x 12 Thread (Oversize) Caterpillar Ductile Iron Repair Plug
SKU: 452-2615-78Cold Crack Repair Plug with hole
$55.76Piece![[401-2104-20] C-BX AUTOMOTIVE IRON PLUGS – BOX OF 25](https://ib.irontite.com/IALora4u2fJHrAIrN_MsWByEaHE-_4VgSastMEpm/401-2104-20-c-bx-automotive-iron-plugs-box-of-25-340x255.jpg)
C Automotive Ductile Iron Plugs, Box of 25
SKU: 401-2104-20$95.99Box
J SOLID DIESEL IRON PLUG
SKU: 452-2613-13Need 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.
$44.99Piece![[468-9190-56] 235 PACK](https://ib.irontite.com/QV1mZLojuEhQIkx3bL82rEMKoyRwnk6xur-OJC-D/468-9190-56-235-pack-340x340.jpg)
235 Crack Repair Kit
SKU: 468-9190-56Expand your cold crack repair capabilities! The Irontite 235 Crack Repair Kit focuses on the popular A-235 plug size, providing essential components in larger quantities for efficient and effective repairs on metal castings.
$313.95Piece
GO-3 DRILLED DIESEL IRON PLUG
SKU: 452-2608-43$12.70Piece![[403-3130-10] 10MM X1.5 THIN.METRIC.RE](https://ib.irontite.com/yzdHfGeZxiyMbXuVCq_rnepuGxYiXEbfbpRLe6f2/403-3130-10-10mm-x1-5-thin-metric-re-340x255.jpg)
10mm x 1.5 Thinwall Insert, Metric, Regular Pitch
SKU: 403-3130-10Stripped or weak threads got you down? Get a grip with the Irontite [403-3130-10] 10mm x 1.5 thin wall threaded insert! This metric, regular pitch insert provides a fast, reliable way to restore damaged threads or create stronger ones in softer materials.
$7.76Piece![[403-3130-08] 8MM X 1.25 METRIC THIN.](https://ia.irontite.com/V6NgFyBJJ7ilE0EoJGMhHeG7wm5lJlNq5Ld3clTq/403-3130-08-8mm-x-1-25-metric-thin-340x255.jpg)
8mm x 1.25 Thinwall Insert, Metric, Regular Pitch
SKU: 403-3130-08Struggling with a stripped 8mm x 1.25 thread? The Irontite thinwall insert [403-3130-08] is your quick, dependable fix! Restore strength and get back to the job with a thread that holds tight.
$6.22Piece
7/8-12 OVERSIZE CATERPILLAR REPAIR PLUG
SKU: 452-2615-48$102.48Piece
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![[452-2613-14] J-2 DRILLED-DSL.IRON.PLU](https://ib.irontite.com/9wtd1QByKzoxzgS0f-pBeqqvwTG5LhBjIfEVm4l2/452-2613-14-j-2-drilled-dsl-iron-plu-340x255.jpg)
J-2 Drilled Diesel Ductile Iron Repair Plug
SKU: 452-2613-14J-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.
$53.96Piece![[407-5132-35] 13/64 HSS EXT.DRILL(A235)](https://ib.irontite.com/w8s5v0_FGDE5IvNU3JMzeiWuiWl-6wEOrDllqP5_/407-5132-35-13-64-hss-ext-drill-a235-340x255.jpg)
A-235 13/64" HSS Extended Drill Bit
SKU: 407-5132-35$24.46Piece![[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![[401-2103-86] NLA B-1/8-BX AUTO IRON PLUGS 50/BOX](https://ia.irontite.com/lKYWytDGdqNHsDxxEuIavigZgyaKZYZvIBhCilma/401-2103-86-nla-b-1-8-bx-auto-iron-plugs-50-box-85x77.jpg)
B-1/8 Automotive Ductile Iron Plugs, Box of 50
SKU: 401-2103-86$68.90Box![[407-5104-90] 15/32 HSS DRILL(D D1 SPCL](https://ia.irontite.com/DyJKY42p6GFCJi0dk4wHomkyhPoP0nY36gYOqOq8/407-5104-90-15-32-hss-drill-d-d1-spcl-340x255.jpg)
D, D-1, D-Special 15/32" HSS Drill Bit
SKU: 407-5104-90$20.46Piece![[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![[401-2102-01] A-200 1/2-BX AUTO.IRON.PL](https://ib.irontite.com/agsJxAlP49k5GSBJhfOzOgUiUYJeVC9_mItgrFIF/401-2102-01-a-200-1-2-bx-auto-iron-pl-85x64.jpg)
A-200 1/2" Height, Automotive Ductile Iron Plugs, Box of 100
SKU: 401-2102-01$147.35Box![[401-2102-00] A-200-BX AUTO.IRON.PLUGS](https://ia.irontite.com/VaDyIgbJATU6_VApgfphSwg0TBc7QpMCCnyoIeix/401-2102-00-a-200-bx-auto-iron-plugs-85x64.jpg)
A-200 Automotive Ductile Iron Plugs, Box of 100
SKU: 401-2102-00$145.53Box