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Powerful Exhaust Braking with or without Stock Turbo
The Sentinel Exhaust Brake delivers strong, fully automated exhaust braking for 2017–2027 Chevy Silverado HD and GMC Sierra HD trucks equipped with the 6.6L Duramax (L5P), creating dependable downhill control when factory exhaust braking is not sufficient or the OEM turbo is upgraded.
With the ability to generate braking force up to 80% of your engine’s maximum output, Sentinel provides consistent engine braking with or without the OEM turbo, making it an ideal solution for stock trucks or trucks where the factory turbo has been replaced. The system operates as a dedicated external exhaust brake, delivering reliable braking performance independent of turbo configuration.
The Sentinel Exhaust Brake is fully automated, opening and closing seamlessly with throttle input. Installation is quick and straightforward—often completed in under an hour—and every system is backed by a lifetime warranty. Sentinel requires no ECM or TCM programming, no air compressor, and no special equipment, operating instead with a durable, gear-reduced electric motor built for real diesel work.
Available Products
Why L5P Duramax Owners Choose Sentinel
Many L5P Duramax owners turn to Sentinel when:
· Factory exhaust braking is no longer working
· The turbo has been replaced with an aftermarket unit
· Stronger downhill control is needed for heavy towing
· Consistent exhaust braking is required for long grades
Sentinel restores dependable exhaust braking by moving exhaust braking duties outside of the turbocharger, providing a purpose-built solution for towing and demanding use.
Sentinel Exhaust Brake for the L5P Duramax
Sentinel is a high-capacity electric inline exhaust brake engineered to handle the exhaust flow and braking demands of the L5P Duramax platform.
Key Features
- Up to 80% engine braking capability
- Fully automated operation with throttle input
- Electric inline design — no air system required
- Reliable braking with or without OEM turbo
- No ECM or TCM programming required
- High-torque gear-reduced electric motor
- Simple installation — often under one hour
- Backed by a lifetime warranty
🟩 Buy Sentinel Exhaust Brake
SAFETY
Engine Braking Designed for Heavy Loads & Long Descents
Long downhill grades and heavy trailers place extreme stress on braking systems.
The Sentinel Exhaust Brake enhances safety by:
- Helping manage speed on long descents
- Reducing brake overheating and fade
- Supporting consistent braking under load
- Improving driver confidence while towing
By slowing the engine instead of relying solely on service brakes, Sentinel delivers safer, more predictable braking performance.
HOW SENTINEL WORKS
Sentinel uses an electric inline exhaust valve to create controlled exhaust back pressure during deceleration, slowing the engine and reducing the load placed on service brakes.
What Makes Sentinel Different
- No air compressors or air lines
- No tuning or software changes
- Independent of turbocharger operation
- Automated braking tied directly to throttle input
INSTALLATION
Sentinel Exhaust Brakes are designed for straightforward installation using basic tools.
Typical Installation Includes
- Installing the exhaust brake inline
- Routing wiring
- Connecting the controller
Many installations are completed in under one hour.
DURABILITY & WARRANTY
Sentinel Exhaust Brakes are engineered to withstand:
- High exhaust temperatures
- Repeated braking cycles
- Heavy towing and hauling loads
- Real-world diesel use
Every Sentinel Exhaust Brake is backed by a lifetime warranty.
FITMENT
✔ 2017–2027 Chevy Silverado HD & GMC Sierra HD 6.6L Duramax (L5P)
Fitment
depends on exhaust pipe diameter, available clearance, and exhaust
configuration.
Bundy Motors can assist with fitment confirmation before ordering.
📞 435-704-2272
FREQUENTLY ASKED QUESTIONS — L5P DURAMAX
Does
Sentinel work with aftermarket turbos?
Yes. Sentinel provides reliable exhaust braking with or without the OEM
turbo, making it ideal for turbo upgrades or replacements.
Is
the exhaust brake automatic?
Yes. Sentinel operates fully automatically with throttle input. (Can be installed for manual operation)
Do
I need tuning or programming?
No. Sentinel requires no ECM or TCM programming.
Is
this suitable for heavy towing and hauling?
Absolutely. Sentinel is designed specifically for heavy towing, hauling, and
long downhill grades.
Upgrade Your L5P Duramax with Sentinel Exhaust Braking
Add dependable, fully automated exhaust braking to your L5P Duramax and protect your service brakes on every downhill grade.
🟩 Buy Sentinel Exhaust Brake
📞
Questions before ordering?
Contact Bundy Motors for expert fitment support: 435-704-2272
Mon–Fri 6AM–6PM • Most Saturdays
