Nissan QG ARP Head Stud Kit

ARP Cylinder Head Stud Kit

Upgrade your engine’s reliability and serviceability with the ARP Cylinder Head Stud Kit. Unlike factory torque-to-yield head bolts—which must be replaced every time the cylinder head is removed—ARP studs are designed for repeated use, making them ideal for performance builds, engine rebuilds, and ongoing diagnostics.

Manufactured from premium-grade ARP 8740 chromoly alloy, these studs deliver exceptional strength and durability. Each stud is heat-treated to 200,000 psi tensile strength and precision centreless-ground for near-perfect concentricity, ensuring consistent clamping force and superior head-to-block sealing.

This makes them particularly beneficial for high-performance or forced-induction engines, where maintaining a secure seal between the cylinder head and engine block is critical.

Key Features

• Compatible with Nissan QG Engines (QG15DE, QG16DE & QG18DE)
• Reusable hardware – unlike OEM stretch head bolts
• Manufactured from ARP 8740 high-strength alloy
• 200,000 psi tensile strength for superior clamping force
• Precision centreless-ground for optimal accuracy and fitment
• Thread-rolled to Mil-S-8879 specification
• Black oxide finish for corrosion and wear resistance
• Includes hardened parallel washers for even load distribution and accurate torque readings

Benefits

• Stronger and more reliable than OEM head bolts
• Ideal for high boost, high compression, or performance engines
• Allows multiple cylinder head removals without replacing hardware
• Improves head gasket sealing and engine durability

What's Included

• Complete ARP cylinder head stud set
• Hardened parallel washers
• Matching high-strength nuts

ARP Part Number: 202-4304