The BMW M21 is a straight-six diesel engine developed by the German engine manufacturer BMW. It has swirl chamber injection and is based on the M20 petrol engine [1] and was produced for BMW by the Upper Austrian Steyr engine plant from 1983 to …

NEW UPDATED SITE! BMW M21 diesel engine design notes, list of common problems, photos and all known versions and sizes. Includes 2.4 E30, E28, E34, 324d, 324td, 524td and 524d.

2025年1月2日 · The M21 was BMW’s first 6-cylinder diesel engine. Based largely on the M20 petrol, the M21 has a similar SOHC design with cast iron block and cast steel crankshaft. Its internals are reinforced to cope with higher compression and diesel combustion. The M21 also uses a timing belt.

The BMW M21 is a six-cylinder-inline-diesel engine developed by BMW. The engine with swirl chamber injection is based on the otto engine M20 and was produced for BMW by the upper Austrian Steyr engine plant from 1983 to 1991.

The M21 is an straight-6 Diesel engine of BMW, whose 12-valve, belt-driven SOHC design in three parts, featuring a main Block with a Sump at the bottom and a Head at the top. It is directly related to the M20 engine. The M21 was the only diesel engine fitted to the E30, with a single capacity of 2.4 litres.

2025年3月28日 · The BMW M21D24 is a 2.4 liters (2,443 cc, 149.1 cu-in) straight-six, four-stroke cycle naturally aspirated or turbocharged diesel engine from BMW M21-family. This engine is based on the M20 gasoline engine. The engine was manufactured on Steyr Plant (Upper Austria) since 1983 to 1992.

The 2.4-liter BMW M21 or M21D24 diesel engine was produced from 1983 to 1991 and was installed on the concern's popular models: 3-Series in the back of the E30 and 5-Series in the back of the E28 and E34.

2014年9月27日 · The BMW M21 was a 2.4 L diesel straight-6 engine. It was introduced in 1983 with the BMW M20 design as its basis. It was available with a turbocharger. It was also the last diesel sold in the North American market in the E28 before the reintroduction of a diesel by BMW in the North American market ..

The BMW M21 was a 2.4 L diesel straight-6 engine. It was introduced in 1983 with the BMW M20 design as its basis. It was available with a turbocharger. It was also the last diesel sold in the North American market in the E28 before the reintroduction of a diesel by BMW in the North American market E90 in 2009, the BMW M57.

Der BMW M21 ist ein Sechszylinder-Reihen-Dieselmotor des bayerischen Motorenherstellers BMW. Der Motor mit Wirbelkammereinspritzung wurde aus dem Ottomotor M20 entwickelt und ab März 1983 im oberösterreichischen Steyr in Serie für BMW produziert. Die Ablösung erfolgte ab 1991 durch den Nachfolgemotor M51. Insgesamt wurden 174.407 Einheiten ...