What Mack engines do you carry?

We supply the modern MP7 and MP8, the larger MP10, and the classic E7 in used, rebuilt and remanufactured form for Class 8 and vocational trucks.

What is the difference between the MP7 and MP8?

The MP7 is an 11-liter engine for regional haul and vocational work, while the MP8 is a 13-liter engine for line haul and heavy vocational duty with higher power and torque.

Is the Mack E7 still worth rebuilding?

Yes. The E7 is a legendary vocational diesel known for torque and durability, and parts and core availability remain strong, making it cost-effective to rebuild or repower an E7 truck.

How do I identify my Mack engine for the correct match?

Use the engine dataplate or serial number along with your truck's year and model. We match displacement, rating and emissions configuration for a correct fit.

Do Mack engines come with a warranty and shipping?

Yes. A 6-month warranty is standard, with extended coverage on remanufactured units, and we arrange crated nationwide freight to your shop or terminal.

Used & Reman Mack Truck Engines

Name: Mack Truck Engines — Used, Rebuilt & Remanufactured
Brand: AutoPartsOcean
Availability: InStock
Rating: 4.8 (2500 reviews)

The Mack Engine Family

Mack's heavy-duty lineup spans the long-running E7 and the modern MP platform shared with Volvo Group. Knowing your engine helps us source the right replacement quickly.

E7 — 12.0L inline-6, mechanical and electronic (E-Tech), ~250–460 HP
MP7 — 11.0L inline-6, regional and vocational, ~325–425 HP
MP8 — 13.0L inline-6, line-haul and heavy vocational, ~415–535 HP
MP10 — 16.0L big-bore for heavy-haul (Volvo D16-based)

The E7 — Vocational Legend

The Mack E7 is one of the most respected vocational diesels ever built, prized in dump trucks, mixers and refuse trucks for its torque and durability. Offered in mechanical and later electronic E-Tech versions, the 12-liter E7 powered countless construction and waste fleets. Used and remanufactured E7 engines remain in steady demand because so many of these trucks are still working hard, keeping replacement pricing competitive.

MP7 & MP8 — The Modern Lineup

The MP7 and MP8 are Mack's modern engines, derived from Volvo Group's 11- and 13-liter platforms. The 11-liter MP7 is lighter and well suited to regional haul and vocational work, while the 13-liter MP8 is the volume engine for line haul and heavy vocational duty in the Anthem, Pinnacle and Granite. We carry both in used, rebuilt and remanufactured form, in long-block and complete configurations, with core exchange explained up front.

Mack Engine Lineup

E7	12.0 L I6 · ~250–460 HP · mechanical & E-Tech
MP7	11.0 L I6 · ~325–425 HP · regional & vocational
MP8	13.0 L I6 · ~415–535 HP · line-haul & heavy vocational
MP10	16.0 L I6 · heavy-haul big-bore
Applications	Dump trucks, mixers, refuse, Class 8 tractors
OEM fitment	Mack Anthem, Pinnacle, Granite and earlier models