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Stainless Works Catted Downpipe + Y-Pipe (3.5L EcoBoost, dual-bank)

Fits 2011-2014 3.5L EcoBoost

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gain
~20 hp
est. from comparable claims
price
$1,356
install
2/5 difficulty · ~2 hrs
Buy at Stainless Works Direct

A 304 stainless steel catted downpipe and Y-pipe set for 2011-2014 3.5L EcoBoost trucks, TIG welded and mandrel bent with built-in high-flow catalytic converters, replacing both bank downpipes and the Y-pipe as one kit.

why this one — No standalone horsepower figure is published for this part, checked against the manufacturer site and major retailers - it is meant to support a tune rather than add power on its own.

heads up

Aftermarket catted downpipe. Manufacturer states not legal for sale/use in California or CARB states.

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Gain shown is a no published number, not a guarantee. Price is a list price and can lag the retailer; confirm at checkout. See our affiliate disclosure.