Stainless Works Catted Downpipe + Y-Pipe (3.5L EcoBoost, dual-bank)
Fits 2011-2014 3.5L EcoBoost
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Price tracked 15 times since Jul 12, 2026 across the stores we check daily: low $995, high $1,695, currently $995.
where to buy · 3 retailers tracked
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.
No manufacturer or independent dyno figure found for this specific product (checked manufacturer site + major retailers). Downpipes in this category are marketed as tune-supporting parts; standalone hp/tq figures are not published.
Estimated from comparable claims: cp-e ~5% gain (no absolute hp figure given)
NOT LEGAL FOR SALE OR USE IN CALIFORNIA.
No published gain figure for this part, and nothing here is a guarantee. Price is a list price and can lag the retailer; confirm at checkout. See how we check a price and our affiliate disclosure.