HKS 23001-AN002 Metal Head Gasket Stopper 0.7 mm for 2003-2007 VQ35DE Engines

Vehicle Fitment

• 2003-2007 Nissan 350Z (Z33, VQ35DE)
• 2003-2007 Infiniti G35 Coupe/Sedan (VQ35DE)
• 2002-2008 Nissan Altima/Maxima/Murano with VQ35DE engines (select models)
• 2001-2003 Infiniti QX4 and 2003-2006 Infiniti M35/FX35 with VQ35DE
• Applicable to VQ35DE-equipped naturally aspirated engines in specified platforms

Features

• High-quality multi-layer steel construction for superior sealing
• Stopper-type design with molded ring around combustion chambers
• 0.7 mm thickness engineered for improved dynamic compression ratio
• Optimized seal for high-heat and high-load conditions
• Fluorine rubber coating for exceptional fluid sealing
• Sets right and left gaskets for complete installation
• Ideal for performance builds and high-output engines
• Designed to resist warping and blowout under elevated pressures

Specifications

• Part Number: 23001-AN002
• Gasket Type: Stopper-type multi-layer steel head gasket
• Bore Size: 97 mm
• Thickness: 0.7 mm
• Compression Ratio (nominal): ~10.3:1
• Engine Compatibility: VQ35DE 3.5 L naturally aspirated V6
• Application Platforms: Nissan/Infiniti models listed above
• Installation: Engine head gasket replacement during rebuild or performance upgrade

Included Components

• 1x Left-side metal head gasket
• 1x Right-side metal head gasket

Product Description

The HKS 23001-AN002 Metal Head Gasket (0.7 mm, stopper-type) is a precision-engineered engine rebuild component designed for VQ35DE 3.5 L naturally aspirated engines found in Nissan and Infiniti models from 2003 through 2007. Constructed from multiple layers of high-strength steel and finished with a specialized fluorine rubber seal, this head gasket delivers reliable combustion chamber sealing under high thermal and mechanical stress. The stopper-type design features a molded ring around each combustion opening that enhances sealing integrity and helps resist gasket failure in performance or high-load applications.

With a 0.7 mm thickness and a nominal compression ratio of around 10.3:1, this head gasket is suitable for tuned engines and engines undergoing rebuilds where maintaining or slightly increasing compression is desired. Included as a left and right complete set, the HKS head gasket is ideal for performance enthusiasts and professional engine builders seeking durable, high-temperature head sealing for naturally aspirated VQ35DE engines in vehicles like the Nissan 350Z, Infiniti G35, and other compatible platforms. Proper installation during an engine teardown ensures optimal sealing and longevity, especially in high-output or track-focused builds.