Mishimoto Silicone Transition Coupler 3in to 3.5in - Black | Durable Silicone | Performance Intake Coupler

Overview

The Mishimoto Silicone Transition Coupler 3in to 3.5in in black is designed to provide a reliable and flexible connection between different diameter intake or intercooler piping. This coupler is ideal for Subaru enthusiasts who are upgrading or modifying their intake or turbo piping systems and need a smooth transition between 3-inch and 3.5-inch tubing. Whether you’re enhancing airflow or fitting aftermarket components, this coupler ensures a secure and leak-free seal.

Engineered with high-quality silicone, Mishimoto’s transition coupler offers excellent resistance to heat, pressure, and environmental wear. The thick silicone walls and reinforced internal fibers provide durability and flexibility, preventing cracks or leaks under boost conditions. Available in multiple colors, including black, this coupler blends well with engine bays while maintaining a professional OEM+ appearance.

For Subaru owners, especially those running WRX, STI, or BRZ platforms with upgraded intake or intercooler piping, this transition coupler supports smooth airflow transitions that can help maintain consistent boost pressure and reduce turbulence. Its robust construction ensures long-term reliability, making it a practical choice for both street and track applications.

Features & Specifications

This Mishimoto Silicone Transition Coupler is engineered for universal fitment and features a 3-inch to 3.5-inch diameter transition. Constructed from high-grade silicone with internal fiber reinforcement, it delivers durability and flexibility for Subaru enthusiasts seeking reliable intake and intercooler connections.

• Brand: Mishimoto
• Product: Silicone Transition Coupler 3in to 3.5in - Black
• Part Number: MMCP-3035BK
• Fitment: Universal / N/A
• Material: High-grade Silicone with fiber reinforcement
• Finish: Black
• Construction: Molded silicone with internal fiber mesh
• Origin: Made in China

Key Benefits

• Durability: High-quality silicone resists heat, pressure, and cracking for long-lasting performance.
• Fitment Flexibility: Smooth 3in to 3.5in transition accommodates various intake and intercooler piping setups.
• Leak Prevention: Reinforced construction ensures a secure, airtight seal under boost conditions.
• OEM+ Appearance: Clean black finish blends seamlessly with engine bay components for a professional look.
• Heat Resistance: Silicone material withstands elevated temperatures common in turbocharged Subaru engines.
• Ease of Use: Flexible design simplifies installation and alignment of piping systems.

What's Included

• 1× Mishimoto Silicone Transition Coupler 3in to 3.5in - Black

Installation & Compatibility

This silicone transition coupler is a straightforward bolt-on component that requires no special tools beyond standard hose clamps and basic hand tools. Its flexible design makes it DIY-friendly for Subaru enthusiasts comfortable with intake or intercooler piping modifications. While universal in fitment, verify your specific piping diameters before purchase to ensure compatibility. No tuning is required for installation, but proper clamp torque and alignment are essential to prevent leaks.

• Professional Installation: DIY-Friendly
• Modifications Required: None
• Verify Compatibility: Confirm pipe diameters and application fitment before installation

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