Mack Powertrain
PowerLeash
Mack PowerLeash Engine Brake
The Mack PowerLeash™ engine brake provides more braking horsepower through mid-RPM ranges, and weighs less than other engine brakes. It is fully integrated with the MP™ Engine Series, which includes the MP7, the MP8 and the all-new MP10 engine with up to 605 horsepower. And with better braking over the entire speed range, PowerLeash delivers the most horsepower ever in a Mack engine brake. It's everything you want in an engine brake, and it's every bit as durable, powerful and reliable as a Mack truck itself.
Nothing's quicker
Drivers will immediately notice the near-instantaneous engine braking, as its responsiveness gives drivers confidence behind the wheel of every Mack truck. For trucks with automated transmissions, the quick response also enhances downshifting performance.
Less is more
Weighing in at 50 pounds less than other engine brakes, PowerLeash delivers superior braking power while using fewer parts. And its lightweight, streamlined design gives weight-sensitive transporters the benefit of increased payloads.
Designed for smooth, quiet performance
Reliability is built-in with PowerLeash. Made with a one-piece, integral rocker cartridge, all internal components are precision machined to exacting tolerances. The design also makes operation quieter than ever before.
Servicing is a snap
Injectors are easily serviced without removing the rocker shaft as a standard adjusting screw makes setting valve lash easier.
We stand behind it
Mack PowerLeash is backed by an industry-leading, 2-year, 250,000-mile warranty.
For more information, click here to download the PDF sell sheet. (484 KB)
