Description
The Mishimoto 90-Degree Silicone Transition Coupler, part number MMCP-R90-2540BL, is a purpose-built piping component that steps intake tubing down from 2.50 inches to 4.00 inches while routing the connection through a smooth 90-degree bend. Molded in Mishimoto’s signature blue silicone, this coupler gives fabricators and DIY builders a reliable way to join mismatched tubing sizes without sacrificing a clean bend in the piping run.
Whether you’re piecing together a custom cold air intake, upgrading an existing air intake system, or fabricating fresh intake piping around an air intake filter housing, a transition coupler like this one is the connector that makes odd-size tubing work together. Because it handles both a diameter change and a directional bend in a single piece, it reduces the number of joints needed in a cool air intake or cold air intake filter setup, which can simplify overall intake plumbing on custom builds. It’s the kind of small but essential part that intake filter and piping projects rely on to keep an air intake system properly sealed and routed.
Vehicle Applications
This Mishimoto coupler is a universal fitment component rather than a part designed around one specific make or model. Its 2.50-in to 4.00-in transition with a 90-degree bend makes it useful for custom air intake system fabrication, cold air intake modifications, and general intake piping work wherever a builder needs to join tubing of these two diameters at a right angle.
Features
- 90-degree bend for routing intake piping around tight spaces
- Transitions tubing diameter from 2.50 inches to 4.00 inches
- Constructed from silicone in Mishimoto’s blue finish
- Manufactured by Mishimoto under part number MMCP-R90-2540BL
- Suited for custom cold air intake and air intake system piping projects
Specifications
- Brand: Mishimoto
- Part Number: MMCP-R90-2540BL
- Product Type: Air Intake Systems
- Component: Silicone Transition Coupler
- Angle: 90-Degree
- Size: 2.50-in to 4.00-in
- Color: Blue
Frequently Asked Questions
What size tubing does the Mishimoto MMCP-R90-2540BL coupler fit?
It is a transition coupler that steps down from 2.50 inches to 4.00 inches in diameter.
What angle is this Mishimoto silicone coupler?
It is a 90-degree coupler, allowing the piping to change direction at the transition point.
What color is the MMCP-R90-2540BL coupler?
It is molded in Mishimoto’s blue silicone finish.
What is this coupler made from?
The Mishimoto MMCP-R90-2540BL is a silicone transition coupler.
Is this coupler designed for a specific vehicle?
No, it is a universal-fit component intended for custom air intake and piping builds rather than one specific make or model.
What is the part number for this Mishimoto coupler?
The part number is MMCP-R90-2540BL.







