Mack E7 Diesel

250–400 HP Classic Heavy-Duty Workhorse

Power Range: 250 – 400 HP (186 – 298 kW) | Rated Speed: 1,700 – 1,800 RPM

Architecture: Inline-6, four-cycle, direct-injection diesel with turbocharger & chassis-mounted air-to-air aftercooler

The legendary Mack E7 delivers the muscle and reliability that built Mack’s reputation. Its robust inline-six block, efficient turbo-aftercooled design, and 1990-EPA calibration provide a broad power band ideal for vocational trucks, on-highway haulers, and off-road equipment.

Looking for a complete Mack E7 engine, reman long block, or hard-to-find parts? Boots & Hanks Truck Parts has dyno-tested take-outs, turbos, injectors, ECMs, and full overhaul kits—all compression-tested, warrantied, and ready for same-day worldwide shipping.

Power your fleet with proven Mack durability—visit BootsAndHanksTruckParts.com or call 800-738-7802 today.