Description

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Sentinel Exhaust Brake for 2001–2016 Chevy & GMC 6.6L Duramax

Features:

·       Electric inline exhaust brake — no air system required

·       Designed specifically for the 6.6L Duramax platform

·       Works with or without factory OEM exhaust brakes

·       Installs in under an hour with minimal tools

·       Up to 80% engine braking capability

·       Backed by a lifetime warranty

 

🟩 Buy Now – Select Option

Choose the Right Sentinel Exhaust Brake for Your Truck

Not sure which to choose?

If your Duramax is tuned, equipped with a performance turbo, or used for heavy or commercial towing, we recommend the Heavy Duty option. For stock trucks used for daily driving or recreational towing, the Standard option delivers excellent exhaust braking performance.

Heavy Duty ( CLICK HERE)

Need help confirming fitment?
Contact Bundy Motors: 435-704-2272
Mon–Fri 6AM–6PM • Most Saturdays

Built for Chevy & GMC Heavy Duty Diesel Trucks

Compatible with common applications including:
Silverado 2500HD • 3500HD / Sierra 2500HD • 3500HD
(Model years 2001–2016, varies by configuration)

SUPPORTED DURAMAX ENGINE APPLICATIONS

• LB7 (2001–2004)
• LLY (2004.5–2005)
• LBZ (2006–2007)
• LMM (2007.5–2010)
• LML (2011–2016)

Regardless of generation, Sentinel provides consistent exhaust braking that does not rely on turbo-based braking behavior.

WHY ADD AN EXHAUST BRAKE TO A DURAMAX?

More Power Requires Better Braking Control

The Duramax platform delivers impressive horsepower and torque, but even factory exhaust brake–equipped models can benefit from stronger, more consistent braking—especially when towing heavy loads or descending long grades.

When towing or hauling, Sentinel helps:

·       Maintain safer downhill speeds

·       Reduce reliance on wheel brakes

·       Minimize brake fade caused by overheating

·       Improve control in mountainous or heavy-load conditions

Sentinel is a practical safety upgrade for Duramax owners who tow frequently, haul heavy loads, or demand maximum downhill control.

SAFETY

Engine Braking Designed for Safer Descents

Long downhill grades and heavy trailers place extreme demands on braking systems.

The Sentinel Exhaust Brake enhances safety by:

·       Helping manage speed on long descents

·       Reducing brake overheating

·       Supporting consistent braking under load

·       Improving driver confidence while towing 

By slowing the engine instead of relying solely on service brakes, Sentinel helps maintain safer, more predictable control.

HOW SENTINEL WORKS

Simple Electric Exhaust Braking

Sentinel uses an electric inline valve to create controlled exhaust back pressure, slowing the engine during deceleration.

What makes Sentinel different:

·       No air compressors or air lines

·       No engine tuning required

·       Independent operation

·       Automated braking control (manual option available) 

This design keeps the system simple, reliable, and well-suited for all Duramax generations.

INSTALLATION

Straightforward Installation — Often Under an Hour

Sentinel is designed for easy installation using basic tools.

Typical installation includes:

1.     Inline exhaust brake mounting

2.     Wiring routing

3.     Controller connection

Because Sentinel operates automatically, it provides consistent braking support without requiring constant driver input—supporting safer downhill braking behavior.

DURABILITY + WARRANTY

Built for Real Diesel Use — Backed for Life

Sentinel Exhaust Brakes are engineered to handle:

·       High exhaust temperatures

·       Heavy towing loads

·       Long downhill grades

·       Years of real-world diesel use 

Every Sentinel Exhaust Brake is backed by a lifetime warranty.

FITMENT

2001–2016 Chevy & GMC 6.6L Duramax

Fitment depends on:

·       Exhaust pipe diameter at the install location

·       Available clearance for inline mounting

·       Existing exhaust routing or modifications

Bundy Motors can assist with fitment confirmation before or after purchase.

FAQ — 6.6L Duramax

Does it work with factory OEM exhaust brakes?
Yes. Sentinel works with or without an OEM exhaust brake.

Do I need an air system or compressor?
No. Sentinel is fully electric.

Is installation difficult?
No. Most installations are completed in 1–3 hours with basic tools.

Is this suitable for heavy towing and commercial use?
Absolutely. Sentinel is built specifically for heavy diesel applications.

Upgrade Your Duramax for Safer Towing and Descents

Add dependable exhaust braking to your Chevy or GMC Duramax and protect your service brakes on every downhill grade.

Purchase Today!

Questions before ordering? 

Contact Bundy Motors: 435-704-2272 - Mon–Fri 6AM–6PM • Most Saturdays