Description
Heavy Duty 3.5" Sentinel Exhaust Brake – Product Overview
Electric inline exhaust brake designed for diesel vehicles with 3.5-inch exhaust piping. Sentinel delivers up to 80% engine braking capability to improve downhill safety, reduce brake fade, and protect service brakes. Fully automated, easy to install, no air systems or programming required, and backed by a lifetime warranty.
- Heavy Duty 3.5" electric inline exhaust brake
- Fully automated operation with throttle input
- No air system required
- No ECM or TCM programming required
- Durable worm dirve gear-reduced electric motor
- Simple installation with basic tools
- Backed by a lifetime warranty
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How to Choose the Correct Size
The Sentinel Exhaust Brake lineup is sized by exhaust pipe diameter.
Choose the 3.5" Sentinel Exhaust Brake if your exhaust pipe measures 3.5 inches at the installation location. All Sentinel exhaust brakes share the same core features and performance characteristics—the only difference between sizes is the exhaust diameter they are designed to fit.
If you’re unsure of your exhaust size, Bundy Motors can help confirm fitment before ordering.
Performance & Safety Benefits
The 3.5" Sentinel Exhaust Brake helps:
- Maintain safer downhill speeds
- Reduce reliance on service brakes
- Minimize brake fade caused by overheating
- Improve control while towing or hauling
- Increase driver confidence on long grades
By slowing the engine instead of relying solely on wheel brakes, Sentinel provides more consistent and predictable braking under load.
Ideal Applications
The 3.5" Sentinel Exhaust Brake is commonly used on:
- Diesel pickup trucks
- Diesel vans and SUVs
- Compact and specialty diesel engines
- Light, commercial and utility vehicles
- Custom builds with 3.5" exhaust systems
If your diesel vehicle uses a 3.5" exhaust pipe, this Sentinel exhaust brake is likely a perfect fit.
SAFETY
Engine Braking Designed for Safer Descents
Long downhill grades and towing loads can quickly overwhelm service brakes.
The Sentinel Exhaust Brake enhances safety by:
- Helping manage speed on long descents
- Reducing brake overheating
- Supporting consistent braking under load
- Providing smoother, more controlled deceleration
This results in improved safety and peace of mind when hauling heavy loads.
INSTALLATION
Straightforward Installation — Often Under an Hour
Sentinel is designed for easy installation using basic tools.
Typical installation includes:
- Installing the exhaust brake inline
- Routing wiring
- Connecting the controller
The automated system ensures consistent exhaust braking without requiring constant driver input.
DURABILITY + WARRANTY
Built for Real Diesel Use — Backed for Life
Sentinel Exhaust Brakes are engineered to handle:
- High exhaust temperatures
- Repeated braking cycles
- Towing and hauling loads
- Real-world diesel use
Every Sentinel Exhaust Brake is backed by a lifetime warranty.
FAQ — 3.5" Sentinel Exhaust Brake
Is
this the same exhaust brake as other Sentinel sizes?
Yes. All Sentinel exhaust brakes share the same core design, features, and
automation. The only difference is exhaust diameter or the Heavy Duty.
Will this work automatically with my throttle?
Yes. All Sentinel exhaust brakes have the ability to detect throttle signal and functions automatically with the throttle pedal. This includes newer and older year, make and models.
Do
I need an air system or programming?
No. Sentinel is fully electric and requires no ECM or TCM programming.
Is
this suitable for towing?
Yes. When matched correctly to your exhaust system, the 3.5" Sentinel
Exhaust Brake provides excellent braking performance for towing and hauling.
What
if I’m not sure which size I need?
Bundy Motors can help confirm exhaust size and recommend the correct Sentinel
exhaust brake.
Upgrade Your Diesel with the Sentinel Exhaust Brake
Add dependable, fully automated exhaust braking to your diesel vehicle and protect your service brakes on every downhill grade.
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Questions
before ordering?
📞
435-704-2272
Mon–Fri 6AM–6PM • Most Saturdays
