BMW N47D20 Engine Specifications & Problems Introduction: BMW N47 is BMW's latest four-cylinder common rail
diesel engine, with many improvements over its predecessor, the BMW M47. The N47 engine debuted in March 2007 in the face lifted 1 Series BMW E87 and E81 and was available in the 1 Series BMW E82 and E88, which were introduced later in the same year.
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Engine Specification 4 cylinder inline turbocharged diesel engine Predecessor: M41
Successor:
Displacement range: 1995cm3
Built from: 1999-2007
Fuel:
diesel
Recent Model Model: N47D20 Displacement: 2.0 L (1995 cc/121 in³ Compression Ratio: 16.5:1 Injection Pressure (bar): 2000 Power: 160 kW (218 bhp)@4400 rpm Torque: 450 Nm(332 lb ft)@1500-
2500 rpm Introduced in:
2011
N47
Models & Years BMW 520d Engine,
2.0 (E60/61), N47D20 / N47D20A Fits 07-10
BMW X3 Diesel Engine,
2.0 (E83), N47D20 / N47D20A Fits 07-10
BMW 118d Engine,
2.0 (E81/82/87/88), N47D20 / N47D20A Fits 07-11
BMW 120d Engine,
2.0 (E81/82/87/88), N47D20 / N47D20A Fits 07-11
BMW 318d Engine,
2.0 (E90/91/92/93), N47D20 / N47D20A Fits 07-11
BMW 320d Engine,
2.0 (E90/91/92/93), N47D20 / N47D20A Fits 07-11
BMW 116d Engine,
2.0 (E81/82/87/88), N47D20 / N47D20A Fits 08-11
BMW 316d Engine,
2.0 (E90/91/92/93), N47D20 / N47D20A Fits 09-11
BMW X1 Diesel Engine, BMW 520d Engine,
2.0 (E83), N47D20 / N47D20A/O0 Fits 09-10
2.0 (F10/11), N47D20 / N47D20O1 Fits 10-11
BMW X1 Diesel Engine,
2.0 (E83), N47D20 / N47D20U0 Fits 09-11
BMW 123d Engine, 2.0 (E81/82/87/88), N47D20 / N47SD20B/D/T0 Fits 07-11
Common Problems: The BMW N47 engine is a chain driven engine with a timing chain set up at the back of the engine, the timing is controlled by 3 chains 1 camshaft to diesel pump, 2 diesel pump to crankshaft, 3 crankshaft to oil pump. The most prone chain to fail is the 1st chain and then 2nd is the chain for the diesel pump, we have never seen the crankshaft/ oil pump chain fail. The 1st chain fails 1st as it is the thinnest and stretches over time causing the chain to hit the timing tensioner guides and eventually to snap, this timing chain failure also damages the cam carrier at the back of the engine as the shock of the camshaft chain snapping causes a minute crack to appear on the cam carrier. We have also heard of issues with getting injectors out of the engine once the timing chain has failed. This can lead to a very costly repair as the parts involved from BMW are very expensive and far outweigh the cost of a factory remanufactured engine or of a good used hand engine. The N47 engine family is prone to excessive timing chain wear and premature failure. Rattling noise from rear of the engine is indicative of the condition. Timing chain failure may call for engine replacement or a costly repair. The issue applies to all applications and power variants, up to 03/2011 models. BMW does not recognize this problem, thus no proper service is given to BMW customers.
