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Granatelli Motor Sports 4.00 Inch HD Clamp 318540

HD Clamp

SKU: 318540

Granatelli Motor Sports 4.00" HD Clamp (318540)

The Granatelli Motor Sports 318540 HD Clamp is a heavy-duty 4.00" performance clamp designed for high-pressure automotive applications. Engineered for maximum strength and leak-free performance, it is ideal for turbo systems, intercoolers, and high-performance racing or custom builds.

Heavy-Duty HD Clamp – Securely holds 4.00" hoses and tubing
Durable Construction – Withstands heat, pressure, and vibration
Performance-Ready – Perfect for turbocharged engines, intercoolers, and racing setups
Leak-Free Connection – Maintains reliable sealing under extreme conditions
Quick Installation – Easy and secure setup for high-performance systems

Was: $165.90

Sale: $157.60

Save: 5%

Save: $8.30

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Description

Granatelli Motor Sports HD Tubing Coupler

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

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: 4.000 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.