3'' Downpipe Exhaust for 2011-2016 6.6L Duramax LML

Replace the restrictive factory downpipe on your 2011–2016 6.6L Duramax LML with this 3" performance downpipe, built to improve exhaust flow and support faster turbo response. Manufactured from 201 stainless steel with a polished surface finish, it offers solid corrosion resistance and a clean under-hood look. The 3-inch mandrel-bent tubing reduces backpressure, helping your LML breathe easier and unlock more usable power and torque.

Important Fitment Note: The LML downpipe design changed mid-generation. Please choose the right year.

Key Features

• 3" Diameter: Larger-than-stock tubing for improved exhaust flow and reduced backpressure
• 201 Stainless Steel: Durable, corrosion-resistant construction for daily driving and performance use
• Polished Surface: Smooth mirror-like finish for a premium under-hood appearance
• Mandrel-Bent Tubing: Smooth, consistent bends maintain flow diameter throughout
  
• Performance Gains: Supports quicker turbo spool and increased horsepower & torque output