Automotive Components

General Engine Products
General Engine Products, a wholly-owned subsidiary of AM General is the Original Equipment Manufacturer (“OEM”) and designer of diesel engines and transmissions used in military and commercial applications.

We are the sole producer of the Optimizer 6500 V8 Diesel Engine and the 6.5L service engine to General Motors Service and Parts Operations. The engine and transmission are produced in multiple variants in order to meet a broad array of customer applications. The Optimizer 6500® has one of the best torque-to-horsepower ratios in today’s heavy-duty diesel market.

Optimizer 6500®-290 — 160 hp / 290 lb.-ft.

Naturally-aspirated and mechanically controlled

Optimizer 6500®-380 — 190 hp / 380 lb.-ft.

Turbocharged and mechanically controlled

Optimizer 6500®-410 — 205 hp / 410 lb.-ft.

Turbocharged and mechanically controlled

Optimizer 6500®-440 — 205 hp / 440 lb.-ft.

Turbocharged and electronically controlled

Optimizer 6500®-550 — 250 hp / 550 lb.-ft.

Turbocharged and electronically controlled

General Transmission Products
The 4L85E transmission is a close-ratio four-speed automatic transmission that serves the heavy-duty service market, including AM General’s Humvee, General Motors’ HUMMER H1® SUV, full-size vans, shuttle buses, delivery trucks and light motor homes.

The transmission has been refined and improved over 18 years, has been used in the Humvee for 15+ years and continues to provide reliable performance on extreme terrain and climate conditions. Incorporating electronic controls that consist of using a transmission control module (TCM) interfacing with an engine control module (ECM), the 4L85E transmission provides consistent and precise shift points and shift quality.

These controls continuously monitor shift timing, internal and external conditions and adjust shifts for consistency. Shift stabilization limits the amount of hunting between gears when traveling through mountains, with or without a trailer.

The transmission of choice for AM General’s Humvee family of vehicles

Robust, durable, reliable and smooth shifting

Low warranty costs

Global distribution and service parts network

Through strategic partnerships, AM General has developed ABS systems that are specifically designed to operate in extremely difficult terrain and environments.

From -50° F (-45° C) to being completely submerged in saltwater, the AM General ABS system provides reliable durability and performance to our customers. We offer a full feature system that incorporates automatic braking with traction control and stability control. This ABS development has significantly improved stopping distance and reduced brake pad wear providing our customers improvements in safety, performance, and life cycle cost.
Suspension Systems
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General Engine Products (GEP), a wholly owned subsidiary of AM General, manufactures powertrain and drivetrain components to support AM General vehicle platforms and for the commercial, military and industrial markets.

The GEP assembly facility located in Franklin, Ohio manufactures engines and transmissions in a 92,000 square-foot assembly plant. A dedicated technical staff of engineers and support personnel are assigned to provide manufacturing support for the current product production. The engineering staff supporting these products are also engaged in introducing product improvements through design and technology insertion in current production components and developing new products. The GEP Engineering staff has a number of active projects, one of which involves developing a 6-speed heavy duty transmission that will provide a 15% fuel savings to our customers.

Also, the team is developing a new fuel delivery and head design for a diesel engine providing better performance, efficiency and emissions. The GEP engineering development team is skilled and experienced at understanding and providing solutions to our customers demanding requirements.