Walker 22004 Exhaust Muffler

Walker Heavy Duty 22004 Exhaust Muffler

Walker Heavy Duty 22004 is a universal exhaust muffler built for hard-working on-road and off-road commercial vehicle applications. It uses an oval steel body with an aluminized finish to support exhaust system replacement where a 4-inch pipe connection is required at both the inlet and outlet.

For buyers searching for a universal 4-inch exhaust muffler, Walker 22004 provides a straightforward replacement option with offset inlet and outlet configuration. It is a practical choice for commercial trucks and equipment where Walker exhaust components are used to restore proper exhaust routing and flow.

Key Features

• Universal fit exhaust muffler for commercial vehicle applications
• Oval muffler body with regular grade construction
• Steel body with aluminized finish for added corrosion resistance
• 4-inch inlet and 4-inch outlet with pipe connection ends
• Offset inlet and offset outlet configuration
• Combination muffler type for replacement exhaust service
• Walker Heavy Duty line coverage for engine-to-tailpipe exhaust components

Product Details

Walker Heavy Duty 22004 is part of Walker’s commercial-focused exhaust lineup, which covers a wide range of replacement emissions and exhaust system needs from the engine to the tailpipe. The oval muffler body measures 27 inches long, 11.5 inches wide, and 8.25 inches high, with an overall length of 34 inches. Its 4-inch inlet and outlet dimensions, along with the 2.5-inch inlet offset, make it suitable for exhaust routing where a direct pipe connection is required. This part cross-references Anchor 3632 for the same application.

What It Helps Address

• Damaged or rusted muffler replacement in a commercial exhaust system
• Exhaust noise caused by a worn internal muffler structure
• Restricted exhaust flow from a deteriorated muffler body
• Fitment needs for a universal 4-inch pipe connection muffler
• Replacement requirements for Walker exhaust system service on commercial vehicles

Installation Notes and Tips

Confirm inlet and outlet diameter, offset configuration, and available space before installation. Because this is a universal muffler, fitment depends on exhaust system layout rather than a vehicle-specific mounting pattern. Verify pipe alignment, body clearance, and weld or clamp requirements during exhaust service. Fits are not listed for this part number, so it is not tied to a specific year, make, or model application.

Quality Assurance

Walker Heavy Duty exhaust components are built for replacement service across domestic, import, and commercial vehicle applications. Part number 22004 is designed as a practical exhaust service component for technicians and buyers who need a universal muffler with standard pipe connections and heavy-duty construction.