ARP 202-4301 Head Stud Kit for Nissan RB20/RB25 Engines (2.0L/2.5L I6)

Vehicle Fitment

• 1979-1993 Nissan/Datsun 200SX/240SX/300ZX/Maxima (RB20DE/RB20DET/RB25DE/RB25DET)
• Applicable to all models using RB20/RB25 engines, naturally aspirated or turbocharged

Features

• Manufactured from premium 8740 chrome moly steel for maximum strength
• Heat-treated to 190,000 psi for superior clamping force
• Thread-rolled after heat treatment to enhance fatigue resistance
• Includes high-quality parallel-ground washers for proper sealing
• 12-point nuts ensure precise torque application
• Designed for both RB20 and RB25 engine configurations
• Ideal for high-performance and racing applications
• Facilitates accurate alignment of gaskets and cylinder heads

Specifications

• Material: 8740 chrome moly steel
• Finish: Black oxide
• Strength: 190,000 psi
• Nut Style: 12-point
• Socket Size: 1/2"
• Thread Size: OEM RB20/RB25 standard
• Compatibility: Front cylinder head (all RB20DE, RB20DET, RB25DE, RB25DET engines)

Included Components

• 1x ARP 202-4301 Head Stud Kit
• 1x Set of 12-point nuts
• 1x Set of parallel-ground washers

Product Description

The ARP 202-4301 Head Stud Kit is engineered for Nissan RB20 and RB25 engines, including both naturally aspirated and turbocharged variants. Crafted from premium 8740 chrome moly steel and heat-treated to 190,000 psi, these studs deliver exceptional strength and durability for high-performance builds.

Thread rolling after heat treatment improves fatigue resistance, ensuring long-lasting performance under extreme conditions. The kit includes high-quality parallel-ground washers and 12-point nuts for precise torque application, promoting proper cylinder head alignment and gasket sealing.

Perfect for street performance or track-focused engines, the ARP 202-4301 Head Stud Kit provides reliable clamping force and peace of mind for builders seeking maximum engine performance.

Note: Fitment confirmed through 2024. 2025 coverage unconfirmed at time of listing.