Walker Quiet-Flow SS 21539 Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.5" Outlet (ID) for Ford F-150

Compatible with 2004 to 2008 Ford F-150 and Lincoln Mark LT models, the Walker Quiet-Flow SS 21539 exhaust muffler features 2.5" inlet and outlet diameters.

Constructed entirely from stainless steel, this muffler offers enhanced corrosion resistance compared to aluminized models, with an internal drainage system that limits moisture buildup. Its internal partitions and mechanically joined tubes accommodate thermal expansion to reduce distortion, while spun-locked heads and OE-style spot welds improve durability.

The direct-fit design includes OE-style hangers, brackets, and pipe routing for straightforward installation without the need for welding or specialized tools. Premium acoustic features like OE-style louvered tubes and domed heads reduce noise to preserve factory-quality sound. Acoustic and flow tested, this muffler delivers reliable OE-style performance.

Verify compatibility with product manufacturer before purchase.