What is this part used for?

This is a transition reducer used in exhaust systems. It allows you to connect two sections of exhaust pipe that have different diameters, specifically from 3.5 inches down to 4 inches.

What material is this reducer made from?

This transition reducer is made from aluminum, which makes it lightweight and suitable for custom exhaust builds.

What are the dimensions of this part?

The reducer changes the exhaust diameter from 3.5 inches to 4 inches. Its overall length (OAL) is 1.188 inches.

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Specifications

Brand: Stainless Bros
Part #: 307-10289-0000

Stainless Bros 1.188in OAL 3.5in to 4in Transition Reducer - Aluminum

Name: Stainless Bros 1.188in OAL 3.5in to 4in Transition Reducer - Aluminum
Brand: Stainless Bros
SKU: stainless-bros-stainless-bros-1-188in-oal-3-5in-to-4in-transition-reducer-alumin-t14-1000144
Price: 23.54 USD
Availability: BackOrder

$23.54

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Key Features

Fits 3.5 inch to 4 inch exhaust diameters.
Overall length is 1.188 inches.
Constructed from aluminum.
Designed for exhaust fabrication projects.

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About this part

Product Details

Stainless Bros is known for making a variety of exhaust components, and this aluminum transition reducer is a good example of their fabrication parts. This piece is designed to smoothly change the diameter of your exhaust system from 3.5 inches down to 4 inches. It's a common need when you're building a custom exhaust or adapting different exhaust sections together.

Made from aluminum, this reducer is lightweight and can be a good choice for custom exhaust projects where weight is a consideration. The overall length (OAL) is 1.188 inches, which is fairly compact and should make fitting it into your exhaust layout straightforward. It's a simple, well-made part that gets the job done for exhaust fabrication.