Granatelli 3.50 Inch HD Clamp - 318535

Granatelli 3.50 Inch HD Clamp - 318535

Heavy-Duty Quick-Release Coupler for Turbocharged and High-Boost Applications

SKU: 318535

The Granatelli Motor Sports HD Tubing Coupler is engineered specifically for demanding turbocharged, supercharged, and high-boost intake systems where strength, sealing, and serviceability are critical. Featuring a unique pin-and-ball quick-release clamping mechanism, this coupler delivers a secure, leak-free connection while allowing fast disassembly for maintenance or track-side service.

Precision Construction and Specifications

• Type: Straight coupler
• Material: T-6061 aluminum
• Finish: Black
• Inlet/Outlet Diameter: 3.50 in. (88.90 mm)
• Connection Angle: 12-degree bend interface
• Quantity: Sold individually

Performance-Driven Features for Turbo Systems

• Pin-and-ball quick-release clamp system for rapid service and secure retention
• Fully sealed, integrated joining system to prevent boost leaks
• Rated to withstand up to 800 psi of boost pressure and temperatures up to 400°F
• Vibration-resistant design ideal for turbocharged and race applications
• Maintains consistent sealing under high boost, high heat, and extreme airflow

Ideal Applications

• Turbocharged intake and charge pipe systems
• High-boost street and race vehicles
• Custom turbo piping and intercooler plumbing
• Supercharged and forced-induction builds
• Clean, professional connections for naturally aspirated performance intakes

Included Components

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

Designed for builders who refuse to compromise, the Granatelli Motor Sports 3.50 Inch HD Tubing Coupler is the ideal solution for turbo intake systems, boosted charge piping, and high-horsepower applications. Whether on the street, strip, or track, this coupler delivers the strength, reliability, and serviceability required for serious forced-induction performance.

Key Features & Benefits

• Application-focused Granatelli Motor Sports design
• Built for dependable performance and service
• Designed for enthusiasts, professional installers, and performance builds

Fitment & Installation

Confirm the part number, vehicle or engine application, dimensions, and supporting components before installation. Modified vehicles may require additional clearance, fabrication, calibration, or related hardware depending on the combination.

Frequently Asked Questions

How do I confirm fitment?
Match the part number and listed application to your vehicle, engine, dimensions, and supporting components before ordering.

Will this work on a modified vehicle?
Compatibility depends on the complete vehicle combination. Confirm the listed application and supporting components before installation.

Why Choose Granatelli Motor Sports?

Granatelli Motor Sports develops performance components for real-world street, street/strip, race, and custom applications, with an emphasis on practical performance, dependable construction, and integration into serious automotive builds.