Description
The Mishimoto MMCP-3035RD is a red, 100-percent silicone transition coupler engineered to bridge tubing from 3 inches to 3.5 inches. Molded with heat-resistant embedded fibers and shaped as a straight transition, this coupler is designed to handle high heat and pressure while sealing the gap between two differently sized pipe ends.
Whether you’re building out a custom cold air intake system, reworking an air intake filter housing, or connecting sections of a cooling circuit, having the right air intake coupler on hand makes the difference between a clean, leak-free install and a sloppy one. This Mishimoto silicone transition coupler is coolant compatible and built from durable silicone rather than rubber, giving it a higher tolerance for heat and pressure than many stock couplers. It’s a straightforward way to adapt 3-inch tubing to 3.5-inch tubing on an air intake, intake filter, or coolant plumbing run without hunting for a hard-to-find factory part.
Vehicle Applications
Because this Mishimoto coupler is a universal 3in-to-3.5in silicone transition piece rather than a vehicle-specific part, it is suited to any custom air intake, cooling, or piping project that calls for stepping tube diameter from 3 inches down to 3.5 inches (or vice versa). It is coolant compatible, making it usable in cooling system plumbing as well as air intake applications where a straight transition coupler is needed.
Features
- 100-percent silicone construction
- Heat-resistant embedded fibers
- High heat and pressure tolerances
- Straight transition shape connecting a 3-inch end to a 3.5-inch end
- Coolant compatible design
- Available in black, blue, and red — this listing is for the red coupler
- Backed by the Mishimoto Lifetime Warranty
Specifications
- Brand: Mishimoto
- Part Number: MMCP-3035RD
- Material: Silicone
- Interior Material: Silicone
- Color: Red
- Shape: Straight Transition
- Coupler Style: Transition
- End 2 Inside Diameter: 3.5 in
- End 1 Outside Diameter: 3.2 in
- End 2 Outside Diameter: 3.7 in
- Maximum Temperature Rating: 330°F
- Coolant Compatible: Yes
- Hose Clamps Included: No
Frequently Asked Questions
What sizes does the Mishimoto MMCP-3035RD transition coupler connect?
This Mishimoto silicone transition coupler is a straight transition piece that connects a 3-inch tube end to a 3.5-inch tube end.
What material is the Mishimoto transition coupler made from?
It is made from 100-percent silicone with heat-resistant embedded fibers, giving it high heat and pressure tolerances.
Is the Mishimoto MMCP-3035RD coupler compatible with coolant?
Yes, this silicone transition coupler is coolant compatible.
Does the coupler come with hose clamps?
No, hose clamps are not included with the Mishimoto MMCP-3035RD transition coupler.
What color options are available for this coupler?
This transition coupler is available in black, blue, and red; this specific listing is the red version, MMCP-3035RD.
What is the maximum temperature rating of this silicone coupler?
The Mishimoto MMCP-3035RD silicone transition coupler has a maximum temperature rating of 330°F.
âš WARNING (California Proposition 65): This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.







