MagnaFlow 2003-2004 林肯 Navigator 5.4L 加州等級 CARB合規 直接安裝觸媒轉換器 4583029

The mandrel-bent tubing made a noticeable difference in exhaust flow, and the check engine light has stayed off since installation. Fit perfectly on my 2004 Navigator without any modifications needed.

The direct-fit installation was straightforward on my 2003 Navigator, and it's a relief to have the check engine light finally off. The corrosion-resistant stainless steel gives me confidence it'll last through many more California winters.

Took about two hours to swap on my '03 Navigator in the driveway, and the mandrel-bent tubing lined up perfectly with the factory hangers. No more P0420 code, and the exhaust note is actually a touch deeper now. Went through smog last week without a second look.