Sentinel™ Exhaust Brake for 8.3L Cummins C8.3 & ISC
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Heavy Loads. Steep Grades. Serious Braking Power
Delivering braking power up to 80% of engine horsepower, the Sentinel Exhaust Brake helps control downhill speed while reducing service-brake heat and wear.
Built for 8.3L Cummins C8.3 & ISC, it combines a heavy stainless-steel valve assembly with a powerful electric worm-drive actuator that operates in less than one second and mechanically holds its position under load.
All Electric. Throttle Automated.
Available Products
Sentinel™ Exhaust Brake for 8.3L Cummins C8.3 & ISC
Powerful Electric Exhaust Braking for Your Working Cummins.
Heavy loads. Long grades. More control.
Give your 8.3L Cummins powerful aftermarket exhaust braking with the Sentinel. Available in Heavy Duty and Commercial options, Sentinel combines a durable valve assembly with a powerful electric worm-drive actuator to deliver dependable braking under load.
Braking power up to 80% of engine horsepower. Fully electric. Backed by a lifetime warranty.
For Cummins C8.3 and ISC 8.3L applications.
FIND YOUR BRAKE, ORDER ONLINE OR BY PHONE
Need assistance? We’re always happy to help at 435-704-2272.
Put Your Cummins to Work—Holding You Back.
Your engine works hard pulling the load uphill. Sentinel puts it to work helping control your descent.
By creating controlled exhaust backpressure, Sentinel uses the engine’s retarding power to help manage downhill speed and reduce reliance on your service brakes.
Greater control on long, steep grades
Less service-brake heat and wear
Reduced risk of brake fade from overheating
Powerful braking while towing or hauling
More confidence behind the wheel
Maximum braking output varies with engine speed, engine configuration, gearing, and operating conditions. Exhaust braking supplements your service brakes.
Choose Heavy Duty or Commercial.
Two options for your 8.3L Cummins. Powerful electric worm-drive actuation in both.
The Strength Is in the Actuator.
An exhaust brake for a working Cummins needs the strength to move—and hold—its valve against substantial exhaust pressure.
Both Heavy Duty and Commercial Sentinel brakes use a powerful electric motor with worm-drive gear reduction. This design delivers strong valve actuation and mechanically holds the valve in position under load.
Powerful actuation. Strong hold. Built for demanding diesel use.
All Electric. Automatically Controlled.
No air compressor. No vacuum pump. No pneumatic hoses or vacuum lines.
Sentinel’s electric actuator eliminates the supporting air or vacuum equipment required by other designs, simplifying installation.
With throttle-automated control enabled:
Release the throttle: the valve closes to provide exhaust braking.
Apply the throttle: the valve opens so you can accelerate.
Use the dash switch: turn the system on or off.
No ECM or TCM programming required.
Installation includes fitting the brake inline in the exhaust, routing the wiring, and connecting the controller. Requirements vary by vehicle and engine configuration.
An Aftermarket Braking Option for Your Cummins.
Whether your vehicle lacks an exhaust brake, needs additional retarding power, or is getting an aftermarket turbo, Sentinel gives you another option.
On compatible applications, it can:
Provide independent exhaust braking
Supplement an existing factory braking system
Provide exhaust braking when changing to an aftermarket turbo
Use our Exhaust Brake Selector to confirm your vehicle configuration and find the correct brake.
Built for Real Diesel Use. Backed for Life.
Heavy Duty and Commercial Sentinel Exhaust Brakes are engineered for high exhaust temperatures, repeated braking cycles, and demanding towing and hauling.
Every Sentinel Exhaust Brake is backed by a lifetime warranty.
Frequently Asked Questions
Will this work with my Cummins C8.3 or ISC?
Sentinel is offered for these 8.3L engine applications. Use our Exhaust Brake Selector to confirm your vehicle configuration and select the correct setup.
Should I choose Heavy Duty or Commercial?
Heavy Duty is designed for heavy towing and daily use. Commercial provides a larger valve and thicker stainless-steel housing for continual, extreme commercial use. The Exhaust Brake Selector helps you choose the appropriate configuration.
Does it require an air system?
No. Both options are fully electric, with no air compressor, vacuum pump, or pneumatic control lines required.
Does it require programming?
No ECM or TCM programming is required.
Can I get help before ordering?
Yes. You can configure and order online through the Exhaust Brake Selector, or call 435-704-2272 if you need assistance.
Give Your 8.3L Cummins the Braking Power It Deserves.
Choose Heavy Duty or Commercial Sentinel and put powerful, fully electric exhaust braking to work.
FIND YOUR BRAKE, ORDER ONLINE OR BY PHONE
Questions? We’re always happy to help at 435-704-2272.
Sentinel™ by Bundy Motors
