Description

The HKS Intercooler Piping Kits transform the GT-R R35’s charge air delivery system from restrictive factory rubber components into a robust, high-flow aluminum network engineered for reliability and performance at elevated boost levels. Offered in two configurations—basic piping upgrade (13002-AN003) and complete system with integrated blow-off valve (13002-AN004)—these kits address the critical weak point of stock rubber hoses under high boost while increasing flow capacity for modified applications.

Through precision-machined aluminum pipes, reinforced silicone connections, and intelligent diameter enlargement, they achieve an optimal balance of durability, airflow efficiency, and system integration—whether paired with moderate power upgrades or extreme turbo kits.

Product Highlights

🔩 Aluminum Construction for High-Boost Reliability
Replacing the factory rubber hoses that can rupture under elevated boost pressure, these kits utilize precision-machined aluminum pipes that eliminate expansion, deformation, and failure points—ensuring consistent charge air delivery even in 600+ horsepower applications.

📏 Increased Diameter for Enhanced Flow Capacity
Upgrading from the stock φ60 piping (inside fender) to φ65 diameter reduces restriction and supports higher airflow rates—essential for GT570/GT600 kit applications and other power upgrades that move beyond factory flow limits.

🎨 Premium Finish & Complete System Integration
Featuring buffed aluminum surfaces for superior appearance and purple silicone hoses with HKS branding, these kits deliver both visual and functional upgrades while maintaining seamless integration with HKS’s complete turbo kit ecosystem.

⚙️ Two Configurations for Different Build Requirements

• 13002-AN003: Basic piping kit for users with existing SQV or maintaining factory recirculation valve

• 13002-AN004: Complete system including SQV4 blow-off valve for comprehensive upgrades

Technical Specifications

Product Names:

• HKS Intercooler Piping Kit (13002-AN003)

• HKS Intercooler Piping Kit with SQV4 (13002-AN004)

Model Codes: 13002-AN003 / 13002-AN004

Compatibility: Nissan GT-R R35 (VR38DETT, 07/2007 onwards). Components match those included with GT570/GT600 turbo kits.

Piping Specifications:

• Material: Precision-machined aluminum with buffed finish

• Diameter: φ65 (vs. factory φ60)

• Silicone Hoses: Purple with HKS logo, reinforced construction

Kit Configurations:

13002-AN003:

• Components: 2 IN pipes, 4 OUT pipes, 10 silicone hoses

• Requirements: Separate SQV kit (71008-AN027) needed if replacing factory recirculation valve

13002-AN004:

• Components: 2 IN pipes, 4 OUT pipes, 10 silicone hoses, SQV4 kit

• Features: Complete solution including upgraded blow-off valve

Performance & Reliability Philosophy

Goal: To eliminate the factory rubber hose system’s limitations under high boost conditions while improving airflow capacity for modified GT-Rs—providing a robust foundation that supports power upgrades from moderate to extreme levels.

Focus: Durability under elevated boost pressure, increased flow capacity for power upgrades, and seamless integration with HKS’s complete performance ecosystem. These kits address both immediate reliability concerns and future upgrade potential.

Installation & Application Notes

🔧 Comprehensive System Replacement
Each kit includes all necessary pipes and silicone connectors for complete intercooler piping replacement—ensuring no weak factory components remain in the charge air system.

🔄 Application-Specific Kit Selection

• Choose 13002-AN003: If retaining factory recirculation valve or already using HKS SQV

• Choose 13002-AN004: If needing complete system including blow-off valve upgrade

• Both kits: Provide identical piping and flow characteristics

🎯 Target Application Scenarios

• GT-Rs running elevated boost levels (1.2k+)

• Vehicles equipped with HKS GT570/GT600 turbo kits

• Any modified GT-R experiencing or preventing rubber hose failure

• Builds requiring increased airflow capacity for power upgrades

⚡ Performance Benefits:

• Eliminates boost pressure loss from hose expansion

• Reduces intake air temperature through improved flow

• Prevents catastrophic hose failure during high-boost operation

• Supports power levels beyond factory system limitations

⚠️ Important Considerations:

• Both kits designed for use with HKS intercoolers and turbo upgrades

• Proper clamp torque critical for leak-free operation

• Recommended for professional installation

• Factory airbox modifications may be required for clearance

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