AEM Silicone Reducer Coupler 45 Degree 3.5in to 4in Black

The AEM Silicone Reducer Coupler 45 Degree 3.5in to 4in Black provides a 45° silicone transition for connecting 3.5" to 4" piping, enabling reliable routing for both coolant and air passages.

Designed and distributed by Mishimoto, this coupler is intended for applications that require an angled connection where space or routing demands a 45-degree offset. Its form and materials are specified in the product title and description to suit use in coolant and air systems without changing the intended function.

Key specifications

• 45-degree transition: Allows directional change of piping while maintaining a continuous seal between 3.5" and 4" diameters.
• 3.5" to 4" reducer: Matches two different nominal diameters for system integration where a reduction is required.
• Silicone construction (black): Provides a resilient, flexible junction suitable for routing in confined or angled installations.
• Applicable systems: Specified for use in both coolant and air passage systems as noted in the product description.

Why these features matter:

• Angle control: The 45° geometry simplifies routing where straight couplers would cause interference or require additional fittings.
• Diameter transition: A dedicated 3.5" to 4" reducer eliminates the need for multiple stacked adapters, reducing potential leak points.
• Silicone material: Flexibility in the junction helps accommodate slight misalignment and thermal movement in coolant and air systems.
• System compatibility: Stated suitability for both coolant and air passages allows use across multiple subsystems without altering the product intent.

Manufacturer note: Mishimoto is identified as the product vendor for this AEM-branded silicone coupler, reflecting distribution and branding information provided with the product.