Isuzu has used both its own engines and General Motors-built engines. It has also developed engines for General Motors, Renault, Saab, Honda, Nissan, Opel and Mazda.

Overview

Isuzu engines carry a two-character prefix which designate the number of cylinders and engine family. Engines available currently include the following:

Two-cylinder

Diesel

Three-cylinder

Diesel

A Engines

==== L Engines ====

Four-cylinder

Petrol

GH engine

Isuzu's first petrol engines were license built Hillman units for the locally assembled Minx, from 1953. Called the GH10 it has a bore of 65 mm and a stroke of 95 mm for a displacement of 1260 cc. Power is 37.5 PS. In 1955 this was updated to the GH12, a square design with a 76.2 mm bore and stroke for a displacement of 1390 cc. This was upgraded in 1956 for more power, 46 PS rather than the original's 43 PS, and was renamed GH100. In 1958, power increased yet again, to 50 PS.

GL engine

For 1959 Isuzu developed their own square design (78 mm) called the GL150, Isuzu's first own petrol engine. Still showing unmistakable Hillman origins it displaces 1491 cc and has 60 PS. The GL150 was fitted to the 1959 Isuzu Elf and the 1961 Bellel.

General Motors

Isuzu G engine

Isuzu X engine

Isuzu Z engine

Diesel

Isuzu B engine

Isuzu considered the B engine their "small" truck engine. Initially designed in 1969 as a 3.6-liter four cylinder or a 5.4-liter six-cylinder direct injection unit, other displacements were added later on. In 1980 a 3.3-liter version appeared.

Isuzu C engine

Isuzu's C-series engine was a mainstay for their light truck production, as well as for industrial and marine uses. The engine was introduced in 1959; by 1985 over 2 million units had been produced. It was replaced in 1985 by the larger J-series engine.

Isuzu DL engine

Isuzu E engine

This family of engines started as the swirl chamber design, later modified into direct injection (4EE1), final improvement into a 16-valve direct common rail injection (4EE2).

Isuzu F engine

Isuzu H engine

All engines are SOHC with direct injection and are normally aspirated (N/A) or turbocharged (T) or turbocharged and intercooled (T/I) Three bores: 110 mm, 112 mm, 115 mm Four strokes: 110 mm, 115 mm, 120 mm, 125 mm 4HL1 versions have common rail high-pressure fuel injection system with electronic control system (= CR-ECS)

Isuzu J engine

The J-series direct injection diesel engine was introduced in 1985, in 2.5 or 2.8 liter displacements. Initially installed only in lighter duty versions of the Isuzu Elf, it soon found its way into other Isuzu products. It replaced the somewhat smaller C engine; later on 3.1- and 3.0-liter versions were also introduced - still with four cylinders in line.

Isuzu RZ Engine

CNG

CNG Engines

Isuzu developed the first Compressed Natural Gas (CNG) engine series with low-emissions truck mounted with a clean CNG engine emitting zero black smoke.

Five-cylinder

Gasoline

The Isuzu i-Series uses General Motors-built inline five-cylinder engines.

Six-cylinder

Gasoline

General Motors

Isuzu V engine

The Isuzu V engine is a family of all-aluminum 75° V6 gasoline engines ranging from 3.2 to 3.5 liters.

Diesel

Eight-cylinder

Gasoline

Diesel

Twelve-cylinder

Gasoline

Diesel