AEM Silicone 90 Degree Reducer Coupler 2.5in To 3in Red

AEM Silicone 90 Degree Reducer Coupler 2.5in To 3in Red provides a 90-degree transition coupler for coolant and air passage systems, improving routing reliability and reducing installation stress in tight plumbing runs.

Designed as part of Mishimoto’s expanding line of silicone couplers, this 90-degree reducer enables a compact change in direction while stepping between 2.5in and 3in hose diameters. It is intended for use in both coolant and air applications, offering a durable silicone construction suited to repeated assembly and maintenance cycles common in motorsports and performance installations.

Key features and why they matter

• 90-degree reducer geometry — allows compact directional changes in piping layouts, reducing the need for additional bends or assemblies.
• 2.5in to 3in transition — simplifies integration between different-diameter hoses without multiple adapters, streamlining turbo upgrade or intercooler plumbing tasks.
• Silicone construction — provides flexibility and resistance to vibration and mechanical fatigue, which helps maintain reliable seals in dynamic engine environments.
• Red finish — provides visual identification and engine-bay styling that complements aftermarket components.
• Applicable for coolant and air passage systems — supports use in charge piping, intercooler plumbing, or heater/coolant lines where silicone couplers are specified.

Technical specifications

• Type: 90-degree reducer coupler
• Inlet / Outlet sizes: 2.5in to 3in
• Material: Silicone
• Color: Red
• Brand: Mishimoto (part of Mishimoto’s silicone coupler range)

This coupler is suitable for performance exhaust-adjacent plumbing tasks such as high-flow charge piping and turbo upgrade routing where a reliable, flexible transition is required. Use as part of a complete hose assembly with appropriate clamps and supporting hardware to ensure leak-free operation.