Walker 47820 Exhaust Resonator and Pipe Assembly

Walker 47820 Exhaust Resonator Assembly

Walker 47820 is an exhaust resonator and pipe assembly built to match the original system’s fit, flow, and sound profile. It uses tuned resonator design and OE-style construction for 2001 Nissan Altima applications, plus 1998-2000 Nissan Altima models with the California Emission System.

• Part number: 47820
• Exhaust resonator and pipe assembly for OE-style replacement
• 2-bolt welded flange inlet for secure connection
• 2 in. outlet outside diameter with pipe connection outlet
• Steel body and steel pipe construction
• Aluminized finish for added corrosion resistance
• Overall length: 75 in.
• Round resonator body: 14 in. long x 3 in. high x 3 in. wide

Fitment Details

Compatible With 2001 Nissan Altima, N/A. Compatible With 1998-2000 Nissan Altima, N/A, with California Emission System. This part cross-references AP Exhaust 68292 and BRExhaust 285-007 for the same application.

Product Overview

Walker 47820 is engineered as a direct-style exhaust resonator replacement for Nissan Altima models that require OE-like sound control and flow characteristics. The aluminized steel construction, welded flange inlet, and pipe connection outlet support a factory-style exhaust repair where the original resonator and pipe assembly has worn, rusted, or become noisy. For buyers searching for a 2001 Nissan Altima exhaust resonator or a 1998-2000 Nissan Altima California emissions resonator, this assembly provides the correct configuration in a single unit.

Common Issues This Part Can Address

• Exhaust rattling or resonance from a damaged resonator
• Rust-through or corrosion in the original pipe assembly
• Exhaust leaks at the resonator or flange connection
• Excessive exhaust noise compared with factory operation
• Fitment problems when replacing a worn OE-style resonator section

Installation Notes

Verify the vehicle’s emission configuration before ordering, since 1998-2000 Nissan Altima fitment is listed for California Emission System applications. Confirm inlet and outlet orientation, flange style, and overall length against the removed part before installation. Professional exhaust installation is recommended to ensure proper alignment and sealing at the welded flange connection.

Quality Assurance

Walker designs its resonators to follow original-system fit, performance, and sound targets using precise tuning methods and OE-style construction. The steel body, aluminized finish, and application-specific dimensions support a factory-type replacement for the listed Nissan Altima fitments.