Granatelli Motor Sports 4.00 Inch HD Clamp 318540

High-Pressure Quick-Release Coupler for Performance Intake and Boosted Systems

SKU: 318540

The Granatelli Motor Sports HD Tubing Coupler is a premium solution for high-performance and custom automotive applications requiring a secure, serviceable, and leak-free tubing connection. Designed with a unique pin-and-ball quick-release clamping system, this coupler delivers exceptional strength, reliability, and ease of use for boosted and naturally aspirated setups alike.

Precision Construction and Specifications

• Type: Straight coupler
• Material: T-6061 aluminum
• Finish: Black
• Inlet/Outlet Diameter: 4.00 in. (102.00 mm)
• Connection Angle: 12-degree bend interface
• Quantity: Sold individually

Performance-Driven Features

• Pin-and-ball quick-release clamping mechanism for fast service and secure retention
• Fully sealed, integrated joining system for leak-free performance
• Rated to withstand up to 800 psi and temperatures up to 400°F
• Vibration-resistant design for extreme performance environments
• Ideal for repeated assembly and disassembly without wear

Ideal Applications

• Turbocharged and supercharged intake systems
• High-boost and high-horsepower applications
• Custom intake fabrication and charge piping
• Clean, professional installations on naturally aspirated engines

Included Components

• Two weld-in ferrule sets with O-rings
• One precision-machined union sleeve
• One outer clamp assembly
• One ball/pin safety retention pin

Engineered for reliability under extreme pressure and heat, the Granatelli Motor Sports HD Tubing Coupler provides a clean, secure, and professional-grade connection for performance builders who demand strength, serviceability, and precision in their intake and boost plumbing.