![]() It’s fully integrated with the MP Engine Series, and with better braking over the entire speed range, PowerLeash delivers the most retarding horsepower ever in a Mack engine brake. The Mack PowerLeash™ engine brake provides more braking horsepower through mid-RPM ranges, and weighs 50 pounds less than competitive engine brakes. The MP Engine Series is designed with fewer parts, including one-piece steel pistons and stronger bearings and cylinder heads, giving operators a true powerplant that’s built to last. The electronically controlled Variable Geometry Turbocharger incorporates the latest technology to control turbo boost at all RPM ranges and engine loads. This MP Engine Series uses a robust single overhead camshaft that reduces stress and incorporates an ultra-high-pressure fuel injection system. These engines are designed with convenient access points that make servicing a snap. The MP Engine Series features 35,000-mile service intervals for highway trucks and 450-hour or 15,000-mile oil drain intervals (whichever comes first) for vocational applications. The MP7 engine is also well suited for refuse applications and is available in our TerraPro® models. This lightweight engine is ideal for weight-sensitive applications, helping you boost payload when used with our Granite® and Pinnacle™ models. This 11-liter engine has an amazing power-to-weight ratio with a horsepower range from 325 to 405 HP and torque ratings from 1,200 to 1,560 lb.-ft. The MP7® engine is powerful and lightweight to maximize your payloads and your bottom line. ![]() ![]() ![]()
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