ARP 202-4702 Undercut Head Stud Kit for 1987-1994 Nissan 200SX, 1989-1990 Silvia

Vehicle Fitment

• 1987-1994 Nissan 200SX (CA16DE/DET, CA18DE/DET)
• 1989-1990 Nissan Silvia S12 (CA18DE/DET)
• 1989-1990 Nissan 180SX (CA18DE/DET)

Features

• Premium ARP 8740 alloy construction
• Undercut stud design for improved clamping force
• Cold-forged for superior molecular integrity
• Heat-treated to 190,000 psi tensile strength
• 12-point nuts with 3/16" Allen wrench compatibility
• Designed for high-boost and high-performance applications
• Ideal for engine rebuilds, gasket replacements, and performance upgrades
• Trusted by professional engine builders worldwide

Specifications

• Material: ARP 8740 alloy
• Socket Size: 1/2" 12-point, 3/16" Allen
• Thread Size: M11
• Finish: Black oxide
• Includes: 12-point nuts and hardened parallel washers
• Compatibility: CA16DE/DET, CA18DE/DET engines

Included Components

• 1x ARP 8740 undercut head studs
• 1x 12-point nuts
• 1x Hardened parallel washers

Product Description

The ARP 202-4702 Undercut Head Stud Kit is engineered for the Nissan CA16DE/DET and CA18DE/DET engines, found in the 1987-1994 Nissan 200SX, 1989-1990 Nissan Silvia S12, and 1989-1990 Nissan 180SX models. This kit provides superior clamping force and reliability, making it ideal for high-performance applications such as turbocharging, engine rebuilds, and gasket replacements.

Constructed from premium ARP 8740 alloy, the studs are cold-forged to ensure superior molecular integrity and heat-treated to 190,000 psi tensile strength. The undercut design improves clamping force by reducing the stud's diameter in the unthreaded portion, allowing for more consistent stretch and better load distribution. The kit includes 12-point nuts and hardened parallel washers, which distribute load evenly across the cylinder head for consistent torque readings and reduced risk of warping. The precision heat treatment and thread rolling process enhance the studs' strength and durability, making them a preferred choice for professional engine builders worldwide.

Installation is straightforward, requiring standard tools. Whether you're upgrading your engine for increased performance or replacing aging factory bolts, the ARP 202-4702 Undercut Head Stud Kit offers the strength and reliability needed to support your modifications.