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Granatelli Motor Sports HD 4.00 Inch Clamshell 318540CS

SKU: 318540CS

Granatelli Motor Sports HD 4.00" Clamshell (318540CS)

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

Heavy-Duty Clamshell Clamp – Securely holds 4.00" hoses and tubing
High-Strength Construction – Designed to withstand pressure, heat, and vibration
Performance-Ready – Ideal for turbocharged engines, intercoolers, and racing applications
Leak-Free Connection – Ensures reliable sealing under extreme conditions
Easy Installation – Quick and secure setup for performance and racing systems

Was: $110.25

Sale: $104.74

Save: 5%

Save: $5.51

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Description

Granatelli Motor Sports Dual Seal HD 4.0 Inch Tubing Coupler Clamp

SKU: 318540CS

Heavy-Duty Quick-Release Clamshell Clamp for Extreme Turbo and High-Boost Applications

The Granatelli Motor Sports Dual Seal HD 4.0 Inch Tubing Coupler Clamp is built for extreme-performance applications where maximum airflow, boost retention, and reliability are non-negotiable. Precision-machined from T-6061 aluminum, this clamp is engineered to handle the demands of high-horsepower turbocharged and forced-induction systems while maintaining a clean, professional appearance.

Featuring Granatelli’s patented pin-and-ball quick-release clamping mechanism, this clamshell-style clamp provides a secure mechanical lock that resists vibration, heat cycling, and extreme boost pressure. Designed for 4.0-inch (102mm) tubing couplers, it delivers consistent, leak-free sealing in large-diameter intake and charge pipe systems.

Product Specifications

Tubing Coupler Type: Straight
Material: T-6061 Aluminum
Finish: Black
Inlet Diameter: 4.00 in. (102.00 mm)
Outlet Diameter: 4.00 in. (102.00 mm)
Quantity: Sold individually

Performance Features

Dual-seal HD design for maximum boost retention and leak prevention
Pin-and-ball quick-release system for fast installation and servicing
Vibration-resistant under extreme boost and engine movement
Maintains sealing integrity under high pressure and elevated temperatures
Ideal for repeated disassembly without clamp fatigue or loss of clamping force

Included Components

One heavy-duty outer clamp assembly
One ball/pin safety retention pin

Designed for professional fabricators, racers, and serious performance enthusiasts, the Granatelli Motor Sports Dual Seal HD 4.0 Inch Clamshell Clamp is the ideal solution for large-frame turbo systems, high-boost charge piping, intercooler connections, and extreme horsepower builds. When airflow, strength, and serviceability matter most, Granatelli Motor Sports delivers proven performance.