The AP Exhaust X503 is a direct-fit replacement Muffler - Xlerator GMC 6.0L & 8.1L designed to restore factory exhaust performance and sound quality. Constructed from durable aluminized steel and engineered to OE dimensions, this unit installs with minimal modification for a dependable, long-lasting repair. Ideal for technicians and DIY enthusiasts seeking a quality replacement muffler.

AP Exhaust X503 Muffler - Xlerator GMC 6.0L & 8.1L Features:

• Body Material: Aluminized Steel
• Grade Type: Performance
• Muffler Type: Baffled
• Body Shape: Oval
• Body Length: 24.5
• Overall Length: 29
• Inlet Inside Diameter: 3 In. (Left Lower/Right Lower)
• Outlet Inside Diameter: 3 In. (Right Upper)
• Configuration: X503
• Heat Shield Attached: No
• Sound Level: Deep
• Series: Xlerator
• Tunable: No