Main Stud Kit
5.9L 24V Dodge Cummins · M12
1997.5–2006
PART # MP876
5.9L 24V Dodge Cummins · M12
1997.5–2006
PART # MP876
These are main studs, not head studs. Main and head studs serve different purposes—selecting the right one is crucial. For head studs, search more in our catalog. These studs measure 12 mm. Before purchasing, please confirm that your vehicle is a late 1997 model to 2006, as they are not compatible with early 1997 models.
Main studs provide superior clamping force compared to main bolts, reducing wear on block threads and assisting with main cap alignment. Unlike bolts, which twist during tightening, studs remain stationary, reducing the chance of main cap walking under high loads. They are especially beneficial in high-performance applications where increased stability and durability are required.
Disclaimer: Designed to secure crankshaft main bearing caps. This is NOT a head stud kit.
Your application
Browse the compatible applications below, or check your exact vehicle before adding this product to your cart.
Inside the box
Included components for this product.
| Qty | Component |
|---|---|
| 14 | Main Studs (12 mm) |
| 14 | Nuts |
| 14 | Hardened parallel washers |
| 1 | Allen Wrench |
| 1 | Fastener Assembly Lubricant |
| 1 | Socket |
XOTIC 7200 / Material comparison
Two measures of strength. Explore the comparison for XOTIC 7200 alloy and 8740 chromoly steel.
The maximum tensile stress a material withstands before failure.
232K PSI
222K PSI
The stress at which a material begins to deform permanently.
212K PSI
201K PSI
The original comparison identifies an M14 × 237 specimen.
Original method note: ISO 6892-1:2016 or ASTM A370 / ASTM E8/E8M in the US.
Material specification
The published tensile-strength range for XOTIC 7200 main studs is 220,000–240,000 psi. Tensile strength describes the material under tension; it is not an installed clamping-force or horsepower rating.
The linked ATRONA report records a 240,000 psi tensile result for a submitted stud tested in May 2020. This result applies to the submitted sample.
View source reportSee the details
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Before you begin
Review the instructions and any application-specific requirements before you begin.
This kit uses 12 mm main studs for late 1997 through 2006 applications; early 1997 configurations require a different kit. Use the vehicle checker above to confirm your exact application. For an engine swap or an unusual setup, contact XOTIC before ordering.
Yes. The included sockets, Allen tools and assembly lubricant are listed in the kit contents. Check the installation procedure for any additional equipment needed for the complete job.
Yes. Check the main bearing bores for size, roundness and alignment after changing the fasteners. If correction is needed, have the machine shop use the final assembly fasteners, lubricant and specified torque when checking and machining the main tunnel.
Review the warranty policy for coverage, eligibility, and claim requirements.
Read warranty termsRegister your warrantyWARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov
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