4" OD x 3" ID x 8" Exhaust Reducer Pipe

The Grand Rock R4O-3IA is an exhaust reducer pipe designed to facilitate the connection between exhaust system components of varying diameters. This specific reducer transitions from a 4-inch outer diameter (OD) inlet to a 3-inch inner diameter (ID) outlet. Constructed from aluminized steel, this exhaust component offers a balance of durability and corrosion resistance, making it suitable for the demanding environment of an exhaust system. The pipe measures 8 inches in length, providing adequate space for a secure connection. The R4O-3IA is a connector or reducer type, specifically engineered to bridge different pipe sizes within an exhaust assembly. This part is often found in heavy-duty truck and bus exhaust systems, as indicated by its inclusion in various Grand Rock catalogs for these applications. Its design is straightforward, focusing on functional adaptation between exhaust pipes.