Walker 74047 Exhaust Resonator and Pipe Assembly

Walker 74047 Resonator Assembly for Volt

Walker 74047 is a welded exhaust resonator and pipe assembly built for the 2011-2015 Chevrolet Volt. It is engineered to match original-system fit, flow, and OE-style sound characteristics for a direct replacement on the Volt exhaust path.

Key Features

• Fits 2011-2015 Chevrolet Volt
• Welded resonator and pipe assembly
• Round steel body and steel pipe construction
• 1.750 in. inlet inside diameter and 1.750 in. outlet outside diameter
• Premium grade type for replacement use
• Overall length: 38.380 in.
• Body dimensions: 3.000 in. height, 3.000 in. width, 19.000 in. length
• Pipe connection inlet and outlet design

Product Details

This Walker exhaust resonator assembly is built around precise tuning to help preserve the factory exhaust character on Chevrolet Volt models. The steel body and steel pipe construction support a durable replacement solution, while the welded design helps maintain consistent alignment and exhaust routing. Part number 74047 is a direct-fit style option for drivers replacing a worn or damaged resonator and pipe assembly on the 2011-2015 Chevrolet Volt.

This part cross-references GM OE (e.g., 20970644) for the same application.

Common Issues It May Solve

• Exhaust noise from a damaged resonator section
• Rust or corrosion in the resonator and pipe assembly
• Factory exhaust tone changes after component wear
• Fitment problems caused by a bent or failing exhaust pipe section
• Need for a replacement resonator assembly on a Chevrolet Volt

Installation Notes and Tips

Verify inlet and outlet diameters, overall length, and vehicle application before installation. This assembly uses pipe connections and does not include mounting hardware. Confirm exhaust hanger condition, inspect adjoining pipes for corrosion, and check for proper alignment during installation on the Volt exhaust system.

Quality Assurance

Walker designs this welded resonator assembly to fit, perform, and sound like the original system, using tuning methods aimed at OE-style flow characteristics and sound control.