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Extracting sheared, corroded, or flush-broken exhaust manifold bolts from the cast-iron cylinder head on Cummins ISX and ISX15 heavy-duty engines? Attempting to hand-drill broken hardened exhaust studs using standard angle drills, freehand center punches, or welding nuts onto recessed bolt shanks creates catastrophic engine repair failures. Off-center hand drilling instantly walks the drill bit out of the bolt core and into the softer aluminum or cast-iron cylinder head deck—destroying internal M12/M10 head threads, ruining expensive cylinder head castings, and forcing thousands of dollars in unnecessary cylinder head replacements. Engineered for commercial diesel mechanics, fleet overhaul depots, and heavy engine rebuild stalls, the M20195 Broken Exhaust Manifold Bolt Removal Kit provides a 16.00-pound precision-machined alignment plate fixture, hardened drill guide bushings, cobalt drill bits, and specialized tap extractors designed to clamp directly to the ISX manifold mounting face—guaranteeing 100% concentric hole drilling dead-center through broken studs to preserve original cylinder head threads and eliminate rework.

The Critical Physics of Thermal Stress Stud Shearing & Rigid Fixture Guidance

Cummins ISX and ISX15 diesel engines subject their multi-piece exhaust manifolds to extreme thermal expansion and contraction cycles under heavy highway loads. Over time, heat-induced expansion forces cause exhaust studs to crystallize, stretch, and snap flush or deep inside the cylinder head mounting bolt holes. Because these hardened steel studs are work-hardened and rusted solid into cast-iron cylinder heads, breaking an easy-out extractor inside the broken stud multiplies shop downtime exponentially. Freehand drilling is physically incapable of maintaining parallel alignment along the bolt axis in cramped engine compartments behind turbochargers and frame rails. The M20195 Master Extraction Kit completely eliminates drilling wander. By bolting the rigid, precision-machined template plate using adjacent sound bolt holes on the cylinder head, the fixture locks a hardened slip-bushing precisely centered over the broken stud. The hardened steel bushing guides the pilot drill bit straight down the exact neutral axis of the broken bolt, relieving internal thread tension. Subsequent stepped drilling allows the technician to collapse the remaining thin outer shell of the broken stud and chase original threads with the kit’s precision taps—restoring factory clamping force without Helicoils or oversized inserts.

• Targeted Cummins ISX & ISX15 Engine Platform Fitment – Purpose-built specifically for extracting broken exhaust manifold bolts on Cummins ISX and ISX15 heavy-duty diesel engines.
• Preserves Original Cylinder Head Threads – Rigid template alignment plate and hardened drill bushings keep drill bits 100% centered, protecting original M12/M10 head threads.
• Complete In-Frame Extraction Master Kit – Includes heavy-duty mounting plate, drill bushings, pilot & step drill bits, tap guides, and extraction hardware in a blow-molded case.
• Reduces Hours of Repair Labor to Minutes – Transforms a hazardous 6-hour head removal nightmare into a controlled, repeatable 30-minute in-frame service procedure.
• Substantial 16.00 lbs Heavy-Duty Shop Build – Manufactured from high-tensile, heat-treated alloy steel components engineered for continuous daily commercial fleet service.

Stop Ruining Cylinder Heads. Command Total Cummins ISX Stud Extraction Precision.

The M20195 Broken Exhaust Manifold Bolt Removal Kit for use on Cummins ISX & ISX 15 is an essential capital asset for commercial truck repair centers, Cummins dealership service bays, fleet maintenance facilities, and heavy equipment mechanics. Prevent ruined cylinder heads, eliminate drilling wander, and extract broken ISX manifold studs with complete mechanical authority using Apex tools.

Technical Specifications

Technical Metric	Value / Fitment Reference Guidelines
Target Engine Platforms	Cummins ISX and ISX15 Heavy-Duty Diesel Engines (In-Frame & Out-of-Frame)
Primary Operational Function	Guided drilling, tapping, and extraction of broken exhaust manifold mounting studs
Specialty Tool Style Reference	Template-Guided Exhaust Manifold Stud Removal Fixture Master Kit
Part / Model Reference Number	M20195 (M 20195)
Kit Contents Included	Mounting Template Plate, Hardened Drill Bushings, Cobalt Drill Bits, Tap Guides, Extractor Bits
Construction Metallurgy	High-tensile precision-machined structural alloy tool steel and cobalt bits
Total Package Shipping Weight	16.00 lbs (Heavy-duty master engine service shop kit in carrying case)

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