The M20111‑70 Headbolt Hole Repair Fixture Service Kit is a specialized add-on kit designed to expand the compatibility of the existing repair fixture tool to include the Cummins ISX engine line. Intended for use with the base fixture M20111-A or Equivalent, this kit enables precise alignment, reeming and tapping to insert a thread repair bushing to repair stripped or damaged head-bolt holes in ISX series blocks.
Key features of this add-on kit include:
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Designed exclusively as a supplemental adapter to the M20111-A fixture — it cannot be used standalone.
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Enables correct tap size of M22 × 1.5 for Cummins ISX head-bolt repair bushing.
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Manufactured for heavy-duty engine rebuild environments — supports machinists, remanufacturers and service professionals working on ISX blocks.
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Facilitates faster turnaround and better alignment than using generic repair tools, helping prevent head-gasket leaks due to mis-aligned or damaged bolt holes.
This service-kit add-on is ideal for engine rebuilders, fleet maintenance shops or remanufacturers who already own the M20111-A fixture and wish to extend its use to Cummins ISX engines. With the adapter kit, one fixture can cover both the NT/NH/N14 Detroit Diesel 60 Series & ISX engine platforms, reducing tool investment and shop footprint.
