AP Exhaust 700478 Exhaust Muffler

AP Exhaust 700478 Muffler Overview

The AP Exhaust 700478 is a direct-fit exhaust muffler built for select Dodge Ram heavy-duty trucks. It uses an oval, baffled design with OE-comparable sound level to support factory-style exhaust tone and fitment.

Compatible with 2003-2009 Dodge Ram 2500 and 2003-2008 Dodge Ram 3500 applications, this AP Exhaust muffler is built around a 3-inch inlet and 3-inch outlet with pipe-style connections. The aluminized steel body is sized for service-focused replacement work where original exhaust routing and sound characteristics matter.

• Part number: 700478
• Series: MSL
• Body material: aluminized steel
• Oval muffler body with baffled internal configuration
• 3-inch inlet, right lower location
• 3-inch outlet, left upper location
• OE-comparable sound level
• Direct-fit replacement for select Dodge Ram 2500 and Dodge Ram 3500 trucks

Detailed Product Description

AP Exhaust 700478 is an exhaust muffler for Dodge Ram 2500 and Dodge Ram 3500 trucks that need a direct-fit replacement with factory-style acoustics. The MSL series muffler uses a baffled HH configuration and an oval body measuring 26 inches long, 11.5 inches wide, and 8.5 inches high, with an overall length of 37.5 inches. Its aluminized steel construction is suited for standard exhaust service where fitment and sound control are the primary concerns. The part number 700478 is a practical match for owners searching for a 2003-2009 Dodge Ram 2500 muffler or a 2003-2008 Dodge Ram 3500 exhaust muffler with OE-comparable sound.

Common Replacement Reasons

• Rust or corrosion in the original muffler body
• Exhaust noise increase from a failing internal baffle
• Restricted exhaust flow caused by internal damage
• Need to restore factory-style exhaust tone on a Dodge Ram 2500 or Dodge Ram 3500
• Replacement for a damaged or leaking direct-fit muffler assembly

Installation Notes

Verify inlet and outlet orientation before installation: this muffler uses a right lower inlet and left upper outlet with 3-inch pipe connections. Confirm vehicle-specific exhaust routing and mounting clearance on the 2003-2009 Dodge Ram 2500 and 2003-2008 Dodge Ram 3500 before final fitment. Heat shield is not attached.

Quality Assurance

AP Exhaust manufactures this muffler as a regular-grade replacement part in the MSL series for direct-fit service applications. Part number 700478 is built to match the listed vehicle fitment and OE-comparable sound target for the specified Dodge Ram trucks.