BMW gasoline straight-6 2.5 L N52 B25 A 188 HP engine DIY maintenance and service manual

General Information

BMW gasoline straight-6 2.5 L N52 B25 A 188 HP is an 2497 cc (2.2 UK qt.) internal combustion reciprocating Inline 6 engine. It has bore/stroke ratio of 82 mm × 78.8 mm (3.23 in × 3.1 in). This engine was rated 140 kW (187.74 hp). It was used in BMW cars.

Engine Performance Rating

SAE J1349 (SAE Net)

BMW gasoline straight-6 2.5 L N52 B25 A 188 HP engine performance rating according to SAE J1349 (SAE Net) standard.
Parameter	Output
Power Rating	140 kW (187.74 hp)

Specifications

General

BMW gasoline straight-6 2.5 L N52 B25 A 188 HP engine general specifications.
Parameter	Value
Type	Internal Combustion Reciprocating
Fuel Type	Gasoline
Cylinder Configuration	Inline 6
Engine Displacement	152.38 in³152.38 in³2497 cc
Bore	3.23 in3.23 in82 mm
Stroke	3.1 in3.1 in78.8 mm

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Engine head and valvetrain

BMW gasoline straight-6 2.5 L N52 B25 A 188 HP engine head and valvetrain specifications.
Parameter	Value
Valves per Cylinder	4

Fuel Injection

BMW gasoline straight-6 2.5 L N52 B25 A 188 HP fuel injection specifications.
Parameter	Value
Injection Type	Carburetor
Injection Info	Intake Manifold Injection/ Carburettor