Main Stud Kit
Jaguar Land Rover · AJ133 5.0L V8 / AJ126 3.0L V6
2009–2024 AJ133; 2013–2020 AJ126 Supercharged
PART # MP886
Jaguar Land Rover · AJ133 5.0L V8 / AJ126 3.0L V6
2009–2024 AJ133; 2013–2020 AJ126 Supercharged
PART # MP886
Designed to secure crankshaft main bearing caps. This is NOT a head stud kit.
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.
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 |
|---|---|
| 20 | Main studs |
| 10 | Outer bolts |
| 20 | Hardened parallel washers |
| 20 | Nuts |
| 1 | Assembly lubricant |
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.
Confirm the AJ133 5.0L V8 or AJ126 3.0L V6 engine configuration. Use the vehicle checker above to confirm your exact application. For an engine swap or an unusual setup, contact XOTIC before ordering.
Yes. Assembly lubricant is included in this kit. Apply it only where the installation procedure specifies.
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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