15.5-16 DURAMAX EXHAUST W/ 3 BOLT FLANGE

2015.5–2016 LML Duramax Exhaust Systems (3 Bolt Flange)

Race Pipe, 4 Inch, and 5 Inch Options Available

This exhaust system is built for 2015.5–2016 GM 2500HD/3500HD trucks equipped with the 6.6L Duramax LML. These kits are designed to improve airflow, reduce backpressure, lower EGTs, and give your truck a deeper tone while supporting performance upgrades.

Important Fitment Note (3 Bolt Flange)

These kits are engineered specifically for trucks equipped with the OEM style 3 bolt flange connection at the turbo direct pipe.

Fits:
2015.5–2016 Silverado and Sierra 2500HD/3500HD LML with 3 bolt flange turbo connection

Does not fit:
Trucks with a V band clamp turbo direct pipe

Please verify fitment before ordering.

Built to Last

Constructed from heavy duty T409 stainless steel for long term durability
Mandrel bent tubing for maximum flow and a perfect fit
Improved flanges for a secure, leak free connection

Effortless Installation

Includes clamps, strong flanges, and pre welded contour bent hangers for a factory style fitment and easy installation

Performance Gains

Improved airflow and throttle response
Lower exhaust gas temperatures (EGTs)
Supports upgraded turbos and higher horsepower builds
Deeper, throatier exhaust tone

Features

T409 stainless steel construction
Mandrel bent tubing
OEM style 3 bolt flange
Leak free connections with upgraded clamps
Pre welded contour bent hangers
No sensor bungs

Fitment

2015.5–2016 Chevrolet Silverado and GMC Sierra 2500HD/3500HD
6.6L Duramax LML
EC/CC, SB, LB, and dually configurations
Only compatible with 3 bolt flange style turbo direct pipe

Competition Use Notice

These exhaust systems are intended for off road and competition use only and require aftermarket tuning to prevent codes and ensure proper engine operation. Buyer is responsible for ensuring compliance with local laws and regulations.