Description
Flo-Pro 4-inch downpipe-back for the 2017–2019 L5P Duramax in aluminized steel — cleans up the L5P’s exhaust note and drops backpressure behind the downpipe.
Fits: GM Duramax L5P 6.6L Duramax 2017–2019
Specifications:
– Part #: Flo-Pro 431021
– Diameter: 4 inch
– Material: Aluminized steel
– Muffler: Straight-through, included
– Exit: Single side exit
– Warranty: Flo-Pro factory warranty
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