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The M115 engine family was a straight-4 automobile engine from Mercedes-Benz in the 1970s. The same engine was produced in several versions with differing volume, compression, and horse power according to its application.

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Mercedes-Benz M115 engine
Overview
Manufacturer	Mercedes-Benz
Layout
Configuration	Straight-4
Displacement	2.0 L (1,988 cc) 2.2 L (2,178 cc) 2.3 L (2,277 cc) 2.3 L (2,307 cc)
Cylinder bore	87 mm (3.43 in) 93.8 mm (3.69 in)
Piston stroke	83.6 mm (3.29 in) 92.4 mm (3.64 in)
Combustion
Fuel type	Gasoline
Cooling system	Water cooled
Output
Power output	85–120 hp (63–89 kW; 86–122 PS)

M115.920

The M115.920 is a 2.2 L (2,178 cc) engine with a power output 103–105 hp (77–78 kW; 104–106 PS). The cylinder bore on this type is 87 mm and piston stroke is 92.4 mm. This type shares the crankshaft with OM615 220D.

Applications:

• 1968-1973 220 (W115.010) with oil radiator

M115.921

The M115.921 is a 2.2 L (2,178 cc) 85 hp (63 kW; 86 PS) engine.

Applications:

• L 408 G

M115.923

The M115.923 is a 2.0 L (1,988 cc) 70 kW (95 PS; 94 hp) engine.

Applications:

• 1968-1976 200 (W115.015)

M115.924

The M115.924 is a 2.2 L (2,178 cc), 90–120 hp (67–89 kW; 91–122 PS) engine, depending on compression.

Applications:

• 1968-1973 220 (W115 coupé)

M115.926

The M115.926 is a 2.2 L (2,178 cc), 63–70 kW (86–95 PS; 84–94 hp) engine, depending on compression.

Applications:

• 1968-1977 220

M115.938

The M115.938 is a 2.0 L (1,988 cc) engine with a bore and stroke of 87 mm × 83.6 mm (3.43 in × 3.29 in). Power output was 70 kW (95 PS; 94 hp).

Applications:

• 1975-1980 200

M115.939

The M115.939 is a 2.0-litre 84 hp (63 kW; 85 PS) engine with reduced compression, which follows from a different head. Was e.g. built for export to Switzerland.

Applications:

• 1976-1980 200

M115.951

The M115.951 is a 2.3-liter 110 hp (82 kW; 112 PS) engine.

Applications:

• 1973-1979 230.4 (W115.017)

M115.952

The M115.952 is a 2.3 L (2,277 cc) engine with 89 hp (66 kW; 90 PS).

Applications:

• 409 LF Transporter

M115.954

The M115.954 is a 2.3 L (2,307 cc) version with a 93.8 mm (3.69 in) bore and the same 83.6 mm (3.29 in) stroke. Power output was 81 kW (110 PS; 109 hp).

Applications:

• 1976-1981 230
• 1976-1981 230C
• 1976-1981 230T

M 115.973

The M 115.973 is a 2.3 L (2,307 cc) version with a 93.8 mm (3.69 in) bore and the same 83.6 mm (3.29 in) stroke. Power output was 67–93 kW (91–126 PS; 90–125 hp).

Applications:

• 1979–1982 230 G
• 1972–1990 230 GE

M 115.973 2.6 Brabus

The M 115.973 2.6 Brabus is a 2.6 L (2,587 cc) version with a 93.8 mm (3.69 in) bore and the same 83.6 mm (3.29 in) stroke. Power output was 114 kW (155 PS; 153 hp).

Applications:

• 1989–1990 230 GE 2.6 Brabus

See also

• List of Mercedes-Benz engines

На других языках

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- [en] Mercedes-Benz M115 engine

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[it] Mercedes-Benz M115

La sigla Mercedes-Benz M115 (o Daimler-Benz M115) indica un motore a scoppio prodotto dal 1967 al 1980 dalla Casa tedesca Daimler-Benz per il suo marchio automobilistico Mercedes-Benz.

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