SoCal Diesel's CARB-Compliant Downpipe

February 2017 Products, News DT Staff

If you’re looking for a CARB-compliant downpipe for your LLY, LBZ, LMM, or LML Duramax that’s also not so restrictive, SoCal Diesel has your product! This 3-inch-diameter downpipe is among the highest quality downpipes in the industry, using 304SS material for excellent thermal and structural qualities, a far better quality material than 409SS or mild steel. You wouldn’t want to use mild steel for a turbo downpipe, would you? The downpipes come with thermal heat wrap to reduce heat expulsion and are a direct replacement for the stock OEM downpipe. For more information, call 661-775-5620 or visit

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