AP Exhaust 700489 Exhaust Muffler

AP Exhaust 700489 Muffler for Silverado and Sierra

AP Exhaust 700489 is a direct-fit exhaust muffler for select Chevrolet Silverado 1500 and GMC Sierra 1500 applications. It uses an oval, baffled design with OE-comparable sound level to maintain factory-style exhaust tone while matching the specified inlet and outlet layout.

Key Features

• Part number: 700489
• AP Exhaust MSL series muffler
• Oval body construction in aluminized steel
• Baffled muffler type with regular grade construction
• 3-inch center lower inlet, pipe type
• 2.75-inch right upper outlet, pipe type
• OE comparable sound level
• No heat shield attached

Product Details

This AP Exhaust muffler is built with an aluminized steel body measuring 24 inches long, 11.5 inches wide, and 8.5 inches high, with an overall length of 29 inches. The baffled internal design supports a factory-style exhaust note, making it a practical replacement for drivers who want to restore the original sound profile on a Chevrolet Silverado 1500 or GMC Sierra 1500. AP Exhaust 700489 is listed for 2007-2008 Chevrolet Silverado 1500 and GMC Sierra 1500, excluding Classic models, and for 2009-2013 Chevrolet Silverado 1500 and GMC Sierra 1500.

Vehicle Fitment

• Fits 2007-2008 Chevrolet Silverado 1500, N/A; DIRECT FIT MSL/MAXIMUM Muffler; (Exc. Classic Models)
• Fits 2007-2008 GMC Sierra 1500, N/A; DIRECT FIT MSL/MAXIMUM Muffler; (Exc. Classic Models)
• Fits 2009-2013 Chevrolet Silverado 1500, N/A; DIRECT FIT MSL/MAXIMUM Muffler
• Fits 2009-2013 GMC Sierra 1500, N/A; DIRECT FIT MSL/MAXIMUM Muffler

Common Replacement Uses

• Restoring a damaged or rusted factory muffler
• Replacing a muffler with excessive exhaust noise
• Addressing exhaust restriction from internal muffler wear
• Returning a Silverado 1500 or Sierra 1500 to OE-style sound

Installation Notes

Verify inlet and outlet orientation before installation: 3-inch center lower inlet and 2.75-inch right upper outlet. Confirm vehicle year and model details, especially for 2007-2008 Silverado 1500 and Sierra 1500 applications that exclude Classic models. Professional exhaust installation is recommended to ensure proper alignment and sealing.

Quality Assurance

AP Exhaust manufactures replacement exhaust components for direct-fit applications, and this muffler follows the listed MSL series specifications for the stated vehicle coverage.