AP Exhaust 2557 Exhaust Muffler

AP Exhaust 2557 Muffler for Ford Super Duty

AP Exhaust 2557 is a baffled oval exhaust muffler built with aluminized steel for service on select Ford Super Duty trucks. It uses a 3.5-inch pipe inlet and 3.5-inch pipe outlet with an OE-comparable sound level for a direct replacement approach on the factory exhaust path.

Key Features

• Part number 2557 from AP Exhaust
• Challenge series muffler
• Oval body with baffled muffler construction
• Aluminized steel body material
• 3.5-inch inlet and 3.5-inch outlet
• Right-center inlet and left-center outlet layout
• OE-comparable sound level
• Fits Ford F-250 Super Duty and Ford F-350 Super Duty applications listed below

Product Details

AP Exhaust 2557 is a regular-grade exhaust muffler in the Challenge series, sized with an 8.5-inch body height, 11.5-inch body width, 20-inch body length, and 25-inch overall length. The oval, baffled design is intended for factory-style exhaust routing and sound control, while the aluminized steel body provides a practical balance of durability and value for daily-driven trucks. This AP Exhaust 2557 muffler is listed for 1999-2003 Ford F-250 Super Duty and Ford F-350 Super Duty models with the wide frame configuration, including applications with and without a converter as noted in the fitment data.

This part cross-references Ford OE number YC3Z5230DA for the same application.

Vehicle Fitment

• Fits 2001-2003 Ford F-250 Super Duty, N/A; Challenge LTW; OE system was a welded assembly; recommended that all parts noted [1] should be replaced; w/ Wide Frame, w/ Converter.
• Fits 2001-2003 Ford F-350 Super Duty, N/A; Challenge LTW; OE system was a welded assembly; recommended that all parts noted [1] should be replaced; w/ Wide Frame, w/ Converter.
• Fits 1999-2001 Ford F-250 Super Duty, N/A; Challenge LTW; OE system was a welded assembly; recommended that all parts noted [1] should be replaced; w/ Wide Frame, w/o Converter.
• Fits 1999-2001 Ford F-350 Super Duty, N/A; Challenge LTW; OE system was a welded assembly; recommended that all parts noted [1] should be replaced; w/ Wide Frame, w/o Converter.

Installation Notes and Tips

Verify inlet and outlet orientation before installation: this muffler uses a right-center inlet and left-center outlet with pipe-style connections. Because the OE system was a welded assembly on the listed Ford Super Duty trucks, replacement work may require attention to the full exhaust section noted in the fitment details. Confirm wide-frame configuration and converter application before ordering.

Quality Assurance

AP Exhaust manufactures this muffler as a Challenge series replacement part with OE-comparable sound characteristics and application-specific fitment for the listed Ford F-250 Super Duty and Ford F-350 Super Duty trucks.