Nissan Main Stud Kit KA24DE

The Nissan Main Stud Kit KA24DE from OPTITORQUE TECHNOLOGIES LLC is engineered for builders and mechanics who demand reliability in high-output four-cylinder engine builds. Designed specifically for the Nissan KA24DE platform, this 2-bolt main stud kit addresses the critical weak point in any performance upgrade: the main bearing fasteners. Whether you're building a drift car, turbo application, or street performance engine, upgraded main studs prevent catastrophic crankshaft movement and bearing failure under increased boost, nitrous, or high RPM load.

This kit features premium steel construction with black oxide finish, delivering corrosion resistance and durability in engine bay environments. The 12-point nut design provides superior grip geometry compared to standard 6-point fasteners, reducing the risk of fastener slippage during critical engine assembly and operation. Black oxide coating not only protects against rust but also improves friction characteristics for consistent torque-down procedures. The two-bolt main configuration matches the OEM Nissan block design, ensuring proper fitment and load distribution across the main bearing saddles without requiring block modifications.

Mechanics and engine builders working on KA24DE swaps, turbocharged conversions, or naturally aspirated performance builds will find this main stud kit essential for bottom-end integrity. The kit's compact dimensions (4.5 x 2.5 x 9.5 inches) and lightweight footprint (1.75 lbs) make storage and transport practical for shop environments. Installation requires standard engine assembly practices and appropriate torque specifications; this kit pairs seamlessly with Nissan four-cylinder engine blocks and restores OEM-equivalent fastening standards with professional-grade materials.