The Unix Nerd's Domain

BMW E Numbers List



Ever talked to somebody about BMWs? Of course you have. If you tell him/her you've got a 5 series he/she may ask what type. Then it dawns on you, 5 series could mean FOUR different types of BMW! An original late 70's model, the revised 81-87 car, the radically new 88-96 car or a brand spanking new 97 model.

Now imagine you need to order a part from BMW. Clearly asking for a front bumper for a 5 series isn't going to get you far. Neither will the year as a 1996 5 series could be one of two models. What we need is a model code for both the car and the engine. People on the BMW digest also use these codes frequently to avoid confusing between models so knowing them is useful. Feeling a little lost and overwhelmed yet? Fear not! Practice a few meditation techniques, take a deep breath and check out the chart below. Once you get a handle on things, you'll be a "Bimmer Head" in no time!

If anyone finds errors or omissions please tell me. Eventually a dedicated page will appear for each model and engine, sleep is for wimps!

Car Model Designations

Model Year Cars
114 / E6
E10 / E12
67 - 77 1502, 1600, 1602, 1800, 1802, 2000, 2002ti/tii
E10 was the touring three door model
E20 was the 2002 tii & turbo
E3 68 - 77 2500, 2800, Bavaria, 3.0S/Si, 3.3Li
E9 65- 75 2000CS, 2500CS, 2800CS, 3.0CS/i/L
E12 72- 81 518, 518i, 520, 520i, 535, 525i, 528i, 530i, M535i
E21 75-83 316, 318i, 320, 320i/s, 323i
E23 78-87 725i, 728, 728i, 730i, 732i, 733i, 735i, 745i, L7
E24 77-89 628i, 630CS/i, 633CSi, 635CSi, M635CSi, L6 (highline)
E26 78-81 M1
E28 82-88 518i, 520i, 524td, 525i/e, 528e, 533i, 535i, M535i, M5
E30 83-91 316, 316i, 318i/s, 320i, 323i, 324td, 325e, 325i/ix/is, M3
E31 90 on 840i, 840Ci, 850i, 850Ci, 850CSi
E32 88-94 730i, 735i/iL, 740i/iL, 750iL
E34 88-96 518i, 520i, 525i/x, 525td/s, 530i, 535i, 540i, M5
Z1 (E30) 89-91 Z1 convertible
Z3 (E36/7) 96 on Z3 convertible and Z3 coupe (Z5)
E36 91 - 99 316i, 318i/s/ti/tds, 320i, 323i, 325i/td/tds, 328i/s, M3,Z3
E38 95 - 2002 728i, 730i, 730d, 735i, 740i/iL, 750i/L
E39 97 - 2003 late 1990s 5 series 520i, 523i, 528i, 530d, 535i, 540i, M5
E46 late 98 - 2005 Fourth 3 series
E52 2000 - 2002 Z8 Roadster
E53 2000 - 2007 X5 four wheel drive SAV
E60 E61 2002 Current five series, E61 is touring variant
E63 late 2001 New six series at last! 635Ci, 645Ci, M6.
E64 2003 Six series cabriolet
E65 / E67 2002 "Bangle" seven series (the ugly one)
E66 / E68 2002 long wheel base E65 seven series
E70 2007 Second generation X5
E71 E72 2007 X6, Coupe version of X5
E81 E82 E87 E88 late 2002 1 series
E83 2003 X3 SAV
E85 2002 Z4 Roadster
E86 2006 Z4 Coupe
E89 2009 Second generation Z4
E90 2005 Fifth three series, 4 door saloon
E91 2005 Fifth three series, touring five door
E92 2006 Fifth three series, coupe
E93 2007 Fifth three series, cabriolet
F01 F02 F03 F04 2009 New seven series
F10 F11 2010 New five series

Engine Designations

Not all engines are available in all markets. For example, smaller engines tend not to be available in the US. Diesel engines were not available in the UK until fairly recently. Power figures are for european models, most older US engines tend to be restricted by emissions regulations.

Engines are designated in the format M10B20, which is the 2.0 version of the M10.

S implies a Motorsport engine for an //M car, such as S14B23 for the E30 M3 2.3's engine.

BMW changed the M in favour of N for engines developed after about 2001, so we now have N52B30. N engines tend to be Valvetronic unless they're turbocharged.

You can also read this page about BMW engine history.

BMW
Code
Size(litres) Cyl Valves
per Cyl
Power
(bhp@rpm)
Torque
(lb/ft@rpm)
BHP/
litre
Torque/
litre
Manufactured Bore x Stroke
(mm)
Timing Weight
(kg)
VANOS Used in Notes & Comments
M10 1.5

1.6

1.8

1.8i

2.0

2.0i

2.0tii

2.0 turbo

4 2 75 @ ?

85 @ 5700

90->98 @ 5250

105 @ ?

100 @ 5500

125 @ 5700

130 @ 5800

170 @ 5800

?

91@ 3000

108 @ 3000

106 @ ?

116 @ 3000

129 @ 4350

131 @ 4500

181 @ 4000

50

53.1

52.2

58.3

50

62.5

65

85

?

56.9

60

59

58

65

65

90.5

75

66 -> 69?

71 -> 87

81 -> 87

68 -> 75

E21 320i / E12 520i

71 -> 75

73 -> 74

82x71

84x71

89x71

89x71

89x80

89x80

89x80

89x80?

Chain 82 No 1502

1600-2

1802, E21/E30 316

E28 518i, early E30 318i

2002, E21 320

2002 tii

2002 turbo

2002 turbo was world's
first production turbo.

2002ti had 120bhp

Also in E21 316, 318i,
320/4, E30 316

M20

(little six)

2.0

2.0i

2.3i

2.5i

2.7eta

6 2 ?

129 @ 6000

143 @ 5300

170 @ 5800

125 @ 4250

?

120 @ 4000

151 @ 4000

167 @ 4000

177 @ 3250

?

64.5

62.2

68

46.3

?

60

65.7

66.8

65.6

77->92 80x66

80x66

80x76.8

84x75

84x81

Belt 117 No E21 320

E21 320i/6, E30, E34

E21/30 323i

325i, E34 525i

325e,528e

The "little six", called M60 initially.

Early 2.3 in E21 323i was Jetronic-K, E30 323i was Jetronic-L. Later E30 323i's have 10bhp more.

Eta is lower rpm fuel saver. Can be identified bt longer intake manifold runners, has fewer camshaft bearings.

M30

(big six)

2.5 carb

2.5i

2.8 carb

2.8i

3.0 early

3.0 late

3.3

3.5

6 2 150 @ ?

150 @ 5500

165?

184 @ 5800

185->208 @ ?

188@ 5800

200->206 (euro)

218@ 5200

?

159 @ 4000

?

177 @ 4000

188 @ ?

192 @ 4000

209 @ ?

229 @ 4000

60

60

58.9

65.7

61.7

62.7

60.6

62.3

?

63.6

?

63.2

62.7

64

63.3

67.4

73->81

81->88

74->77

81->87/8

1970s

1987->93

early 80s

77/8 -> 93

?

?

86x80

86x80

89x80

89x80

86x86

92x86

Chain 143 No E12 525

E28 525i, E23 725i

E12 528, 2800/CS

E28 528i, E23 728i

3.0CS/i/L,3.0Si

6 cyl 530i & 730i

3.3Li/633, 732i/733i

535i,635i,735i

Classic "big six".
M102 3.4 6 2 252 @ 5200 279 @ 2200 74.1 82.1 84-> 86? ? Chain 145 No E23 745i M30 with turbo. Early versions wee 3.3.
M40 1.6

1.8

4 2 102 @ 5500

115 @ 5500

105 @ 4250

122 @ 4250

63.8

63.9

63.8

67.8

87? -> late 93 84x72

84x81

Belt 81 No post -87 E30 316i, 318i, 518i, Pre-93 E36 316i, euro 318i. Replaced by M43
M42 1.8 4 4 140 @ 6000 129 @ 4500 77.8 71.7 89 -> 96 84x81 Chain 100 No E30/36 318is, Z3 Beware of proile gasket
in pre 93 engines.
M43 1.6

1.8

4 2 102 @ 5500

115 @ 5500

111 @ 3900

124 @ 3900

63.8

63.9

69.3

68.9

late '93 -> late 98 84x72

84x81

Chain 83 No Post '93 E36 316i, euro 318i (except Coupe), 518i Euro only,
replaced M40
M43TU 1.9 4 2 103 @ ?

118 @ 5500

122 @ ?

133 @ 3900

54.2

62.1

64.2

70

98 on 85x83.5 Chain 83? No E46 318i all models inc. Coupe 316i used detuned 1.9.

Replacement for M43. Has twin balancer shafts to improve smoothness.

Easy to spot, M43tu has plastic intake manifold vs metal on M43.

M44 1.9 4 4 140 @ 6000 133 @ 4300 73.7 70 96 on 85x83.5 Chain 102 No E36 318iS, Z-3 Improved M42, low friction valve gear and MAF instead of AFM.
M50/M50TU 2.0

2.5

3.0

6 4 150 @ 5900

192 @ 5900

240 @ 6000

140 @ 4700

181 @ 4700
(4200 for TU)

225 @ 4250

75

76.8

80

70

72.4

75

89? -> 98

89? -> 95

95

80x66

84x75

?

Chain 136 Single
on TU
320i,520i

325i, 525i

Early US E36 M3

TU model had VANOS.
I don't have earlier M50 figures.
M52/M52TU 2.0

2.5

2.8

3.0

3.2

6 4 150 @ 5900

170 @ 5500

193 @ 5300

241 @ 6900

140 @ 4200

180 @ 3950

207 @ 3950

236 @ 3600

75

68

68.9

75.3

70

72

74

73.8

96 on

95 on

95 on

96->99

80x66

84x75

84x84

?

Chain 118 euro

140? USA

Single

Double on TU

E39 520i

E36 323i, E39 523i

E36 328i, E39 528i, 728i

Late US E36 M3

Iron block in US,
Alloy in europe.
M54 2.2

2.5

3.0

6 4 170 @ ?

192 @ ?

231 @ ?

155 @ 3500

181 @ 3500

221 @ 3500

77.3

76.8

77

70.5

72.4

73.7

autumn 2000

autumn 2000

early 2000

? Chain 126 Double '99 Z3, E39 and E46 six cylinder models Based on M52. Shows what the M52 should have been!

Main difference is double VANOS and a less restrictive intake manifold.

M60 3.0

4.0

V8 4 218 @ 5800

286 @ 5800

229 @ 4500

295 @ 5100

72.7

71.5

76.3

73.8

April 92 -> 96 84x67.6

89x80

Chain 146 No 530i 730i

540i, 740i, 840i

All alloy.
M62 3.5

4.4

4.6

V8 4 235 @ 5700

286 @ 5700

350?

236 @ 4700

310 @ 3900

?

67.1

65

76?

67.4

70.5

?

late 96 on 84x78.9

92x82.7

?

Chain 140 Single
after 98
730i

540i, 740i,840i

Improved M60
M70 5.0 V12 2 300 @ 5200 332 @ 3900 60 66.4 88-> 94 84x75 Chain 155 No 750il 850i Classic V12
M73 5.4 V12 2 326 @ 5000 361 @ 3900 60.4 66.9 95/6? on 85x79 Chain 150 Single
after 98
E38 750iL ? Newest V12
N42 1.8

2.0

4 4 113 @ 5500

140 @ 6000

129 @ 3750

147 @ 3750

62.8

70

71.7

73.5

2001 - 2003 ? Chain 100 (short) Valvetronic E46 three BMW's first Valvetronic engine
N43 1.8

2.0

4 4 143 @ 6000

170 @ 6700

139 @ 4250

154 @ 4250

79.4

85

77.2

77

2007 only 84x90 Chain 103 (short) Valvetronic E90 three Replaced by N46, quite rare. Used High Precision injection.

1.8 version was a detuned 2.0, same block

N45 / N45N 1.6

2.0

4 4 115 @ 6000

173 @ 7000

110 @ 4300

147 @ 4250

71.9

86.5

68.8

73.5

2007 on ?

?

Chain 79 (short) NOT Valvetronic E90 316i / 116i 2.0 was used in rare E90 320Si saloon homologation special. Normal throttle body makes more high end bhp than valvetronic.
N46 / N46N 1.8

2.0

4 4 115 @ 5500

150 @ 6200

129 @ 3750

147 @ 3750

63.9

75

71.7

73.5

2004 on ?

?

Chain 96 (short) Valvetronic E90 three, 1 series 1.8 version was a detuned 2.0, same block but different ecu and camshafts
N52 / N52N 2.5 (523i)

2.5

3.0

6 4 175 @ 5800

215 @ 6500

272 @ 6650

170 @ 3500-5000

184 @ 2750-4250

232 @ 2750-4250

70

86

90.7

68

73.6

77.3

2004 to 2007 ?

?

85x88

Chain 161 Valvetronic. Used in E90, E65, etc. BMW's first Valvetronic six. Magnesium and aluminium block!

US late e60 528 / e90 328 had detuned 3.0 engines.

e60 523i had detuned N52B25.

N53 2.5

3.0

6 4 ?

272 @ 6700

?

236 @ 2750

?

90.7

?

78.7

2007 on ?

?

Chain 126 (short) Non Valvetronic.

Dual VANOS

E90 / 1 series / E60 Replacement for N52 using high pressure injection (GDI).

Not sold in USA.

N54 3.0 6 4 306 @ 5800 295 @ 1300-5000 102 98.3 2006 on 84x89.6 Chain 195 Non Valvetronic.

Dual VANOS

E90 335i / E60 535i Twin turbos in series. 306bhp is a very conservative figure, can be a lot higher in real life. Based on M54 block, not N54 magnesium/aluminium block.
N62 3.6

4.0

4.4

4.8

8 4 272 @ 6200

306 @ 6300

319 or 333 @ 6100

360 or 367 @ 6300

266 @ 3700

288 @ 3500

325 or 332 @ 3700

369 or 361 @ 3400

75.6

76.5

73.9

75.4

73.9

72

75

76

2003 on ?

?

92x82.7

93x88

Chain 265 Valvetronic

Dual VANOS

X5, E65, E60, etc. Replacement for M62
N63 4.4 8 4 400 @ ? 450 @ ? 90.9 102.3 2008 on ? Chain ? NOT Valvetronic

Dual Vanos

X6 Reverse flow V8! Twin turbos are in the V valley, intakes are at the sides to improve packaging.
N73 6.0 12 4 445 @ 6000 441 @ 3950 74.2 73.5 2003 on ? Chain ? Valvetronic E65 670Li BMW's largest production engine, 6.0 V12. Very economical for it's size.
S14 2.3

2.5

4 4 200 @ 6750

215 @ 6750

177 @ 4600

181 @ 4750

87

86

77

72.4

87 -> 89

90 -> 91

93.2x83.8

?

Chain 106 No E30 M3 Several models used. Basically a four cylinder S38.
S38 early 3.5 6 4 277 @ 6500

286 @ 6500

238 @ 5000

245 @ 4500

79.1

81.7

68

70

79 - > 80

86 -> 90

93.2x83.8 Chain 146 No M1

E28 M5, M6

24 valve M30
S38 late 3.6

3.8

6 4 315 @ 6900

340 @ 6900

260 @ 4750

289 @ 4500

87.5

89.5

72.2

76

88 -> 91

92 -> 96

? Chain 151 No E34 M5 Spotter's tip: 3.8 used one coil per cylinder, 3.6 had a normal distributor.
S50 3.0 6 4 286 @ 7000 236 @ 3600 95.3 78.7 92 ->95 ? Chain 152 Single E36 M3 early euro
S52 3.2 6 4 321 @ 7400 258 @ 3250 100.3 80.6 96 -> 2000 86.4x91 Chain 152 Double E36 M3 (Euro) Late model Euro.
S54 3.2 6 4 343 @ 7900 269 @ 4900 107.2 84.1 2001 on ? Chain 217 Double E46 M3
//M Roadster
E46 M3
M Roadster has 321bhp.

US version 333bhp or 315 for Roadster.

S62 4.9 8 4 400 @ 6600 369 @ 3800 81.6 75.3 99 on 94x89 Chain 158 Dual E39 M5 Double VANOS.
S65 4.0 8 4 420 @ 8300 295 @ 3900 105 73.8 2007 on 92x75.2 Chain 202 Dual E90 M3 4 litre V8, first V8 in an M3. Wet sump, unlike V10 S85 version.
S70 5.6 12 2 380 @ 5300 406 @ 4000 67.9 72.5 94->97? ? Chain 165 No? E31 850CSi //M Tweaked M70
S85 5.0 10 4 507 @ 7750 384 @ 6100 101.4 76.8 2005 on 92x75.2 Chain ? Double E60 M5, new M6 V10, inspired by Formula 1 engine. Dry sump!
M21 Diesel 2.4

2.4 Turbo

6 2 86 @ 4600

115 @ 4800

112 @ 2500

155 @ 2400

35.8

47.9

46.7

64.6

85 -> 86

83-> 91?

80x81 Belt 126 No 324td, 524d/td Never available in UK.
Was used by Ford.in US.
M41Diesel 1.7 turbo 4 2 90 @ 4400 140 @ 2000 53 82.4 95 on 80x82.8 Chain? 108 No E36 318TDS Cut down 2.5tds
M51 Diesel 2.5 TD

2.5 TDS

6 2 115 @ 4800

143 @ 4800

162 @ 2400

206 @ 2200

46

57.2

64.8

82.4

95 on 80x82.8 Chain 132 No E36 325TD/S, E34, E39 TDS has intercooler
M47 / M47N/
M47N2 Diesel
1.8

2.0

4 4 115 @ ?

136 @ 4000

195 @ ?

207 @ 1750

68 103.5 98 on ? Chain 117 No? E46 320d Variable incidence turbo.
M57 / M57N /
M57N2 Diesel
2.5

3.0

6 4 170 @ 4000

183 @ ?

258 @ 2000

300 @ 1750

68

61

103.2

100

autumn 2000 on ?

84x90

Chain 168 No? E46, E39 Replaced M51
M57N is upgraded, later version from mid 2003
M57T30 (306D4) 3.0 6 4 272 @ 4400 413 @ 2000 91 138 2004 on ? Chain ? No? E60 535d Twin turbo M57
M67/ M67TU Diesel 3.9

4.4

V8 4 245 @ 4000

329 @ 3800

413 @ 1750-2500

552 @ 1900-2500

61.2

74.8

103.2

125.5

98 on ? Chain 192 No? E38 740d, E65 740d

4.4 in E66 745d

Variable incidence turbo.

VANOS = variable valve timing.

To convert from ft/lb to Nm multiply by 1.36 (100ft/lb = 136Nm).

To convert from BHP to kW multiply by 0.735 (100 bhp = 73.35kW).

Engine weights are for a dry engine with no manifolds, starter motor, alternator, etc. They will vary by 2 or 3 kg for different types of fuel injection and model year. US M50 had an iron block due to sulphur problems and is much heavier than euro. Anti-pollution kit will add a few kgs to earlier US spec engines. Where you see (short) this means the weight is for a short engine with no heads or ancillaries.