Diesel truck accessories off road accessories ABOUT US | RETURNS FORM | POLICIES | FAQ'S | VIEW CART | CHECKOUT
100% customer guarantee
join our newsletter Thoroughbred Diesel
brands performance accessories stock parts tractor parts
Code USA10 for 10% off sale
customer guarantee
shop by diesel
shop by
Thoroughbred Apparel
read our low price guarantee
click here for diesel truck gallery
gift cards
diesel resource guide
Pacbrake logo

Pacbrake Loadleash Engine Brake

Pacbrake Loadleash Engine Brake
Fits: 07-13 Dodge 6.7L
free shipping
click here to order
Fits: Dodge RAM 6.7L Cummins 2500-5500 HD
2007-2013 Pick-Up & Chassis Cab Trucks
  • Performance - Doubles the supplemental braking power for unmatched load control
  • Safety - Increases vehicle control and reduces brake fade
  • Savings - Reduced foundation brake wear for 3x longer brake service intervals
  • Weight - Truly integrated engine brake solution with minimal weight increases (compared with traditional engine brake applications)
  • Packaging -Integrated engine brake with no increased valve cover heights
  • Noise Bylaws - Unlike traditional engine brakes which require expensive mufflers to dampen high noise levels, the LoadLeash is virtually silent

loadleash logo

install difficulty
6 Hours
6 Hours
Install Difficulty
difficulty bar
Tow with confidence, brake with authority with the Pacbrake loadleash engine brake. Quick, controlled braking for heavy duty Dodge trucks just got easier with the introduction of Pacbrake’s new P-67 LoadLeash weeper engine brake. Working in conjunction with the OEM Variable Geometry Turbo (VGT) exhaust brake in the 6.7L ISB Cummins diesel engine, the Pacbrake LoadLeash provides an additional 150 retarding horsepower, or roughly double what the VGT can supply alone.

In addition to enhanced control and reduced brake fade, the LoadLeash can extend brake life service intervals by up to 300%.

Pacbrake’s LoadLeash offers straightforward bolt-in installation and is the only true engine brake available for the Class 3-5 truck market. LET PACBRAKE’S NEW INTEGRATED LOADLEASH ENGINE BRAKE SHOW YOU WHAT REAL BRAKING IS ALL ABOUT!

Loadleash Engine Brake Specifics
Loadleash Operation
  • Electric/Hydraulic Mechanical Activation of Exhaust Valve
  • Provides a Pumping Loss on Compression Stroke and Exhaust Stroke
  • Works in Conjunction with Vehicle VGT or Exhaust Valve
Pacbrake’s LoadLeash for Cummins 6.7L engines is a “weeper” or “bleeder” design engine brake, working in tandem with the VGT exhaust braking feature. It functions by the exhaust valves being held slightly off their seats during the complete engine cycle with the VGT providing back pressure and increased boost pressure.

Two braking strokes are achieved, plus, the expansion stroke is eliminated.

1. Standard braking stroke occurs during the normal exhaust stroke with the piston trying to push cylinder pressure past the open exhaust valve against the “closed” VGT.

2. The second braking stroke occurs during the compression stroke with the piston trying to push cylinder pressure past the open exhaust valve against the “closed” VGT.

- Normal expansion stroke after TDC is eliminated by the open exhaust valve.

Results are 50% more retarding horsepower than the VGT alone, as measured at the flywheel.

Testing & Validation
Testing & Validation Pacbrake products are supported by our dynamic in-house engineering and development teams, and validated through stringent design and functionality testing programs.

  • Performance Dyno Testing
  • Endurance Dyno Testing
  • Environmental Testing
  • Vibration Testing
  • Field Testing
Product Description Price Order
2007.5-2012 Dodge 6.7L Cummins
3500/4500/5500 Cab & Chassis
(Automatic Aisin AS68RC Transmission)
Pacbrake Part # P55000
Our Part # PACP55000
2007.5-2009 Dodge 6.7L Cummins
(Automatic 68RFE Transmission)
Pacbrake Part # P55001
Our Part # PACP55001
2010-2012 Sterling Chassis Cab Trucks
(Automatic 68RFE Transmission)
Pacbrake Part # P55002
Our Part # PACP55002
Thoroughbred Diesel logo glowing Thoroughbred Diesel Performance and Repair Shop
4843 Rockwell rd.
Winchester, KY 40391
Call Toll Free: 1-866-737-4966

Copyright© 2003-2015 Thoroughbred Diesel All rights reserved.
Site Map
100% customer guarantee