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Custom Sentinel Exhaust Brake (Heavy Duty)

Order any inlet and outlet size to match your truck. The Heavy Duty Sentinel Exhaust Brake fits any diesel exhaust system. This high-output, all-electric exhaust brake delivers up to 80% engine retarding force, providing industry-leading braking power for towing and heavy use. By eliminating air lines, vacuum systems, and complex plumbing, Sentinel’s electric design delivers fast, reliable braking with fewer failure points. That’s why it’s backed by a true lifetime warranty. No ECM or TCM tuning required. Installs in about one hour using basic hand tools and is guaranteed to fit any diesel vehicle.

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$1,650.00


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Description


Heavy Duty Custom Sentinel Exhaust Brake – Product Overview

The Heavy Duty Sentinel Custom Exhaust Brake provides the same powerful, fully automated exhaust braking performance found in all Heavy Duty Sentinel exhaust brake systems, with the flexibility of custom inlet and outlet sizes selected by the customer before checkout

Designed for late-model diesel trucks, older trucks equipped with performance turbos and upgraded fuel systems, and demanding commercial applications.

Choose the inlet and outlet pipe sizes to match your existing exhaust. The exhaust brake can also be used as a straight-pipe adapter, making it ideal for custom exhaust setups and simplifying installation.

Features

  • Durable heavy dutyelectric inline exhaust brake
  • Optional Inlet/Outlet sizes
  • Fully automated operation with throttle input
  • No air system required
  • No ECM or TCM programming required
  • Durable 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 Custom Sentinel Exhaust Brake if your exhaust pipe measures different from inlet to outlet 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 Custom 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 Custom 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 different inlet & outlet sizes

If your diesel vehicle uses different exhaust pipe sizes, the Custom Sentinel exhaust brake is likely what you need. 


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:

  1. Installing the exhaust brake inline
  2. Routing wiring
  3. 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 — Custom 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. 

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 Custom 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

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