Mercedes-Benz Engine

M112

The Mercedes-Benz M112 is a SOHC V6 gasoline piston engine.

Years
1997–2008
Configuration
V6
Fuel
Gasoline
Top power
354 PS
Mercedes-Benz M112 V6 engine

Mercedes-Benz’s first gasoline V6 — three valves, twin spark, and the quiet replacement for a generation of inline sixes.

Introduced in 1997 as the M104’s successor and a short-bank twin to the new M113 V8, the M112 used a 90° Alusil block, SOHC heads with three valves and two spark plugs per cylinder, forged rods, a magnesium dual-length intake, and a balancer shaft between the banks to tame the odd-fire layout. Displacements spanned 2.4 to 3.7 liters; the 3.2 alone powered everything from the CLK 320 and E 320 to the late R129 SL 320 and the R170 SLK 320.

AMG’s Lysholm-supercharged 3.2 — the M112K in the SLK 32 and C 32 — previewed the forced-induction playbook later applied to the M113. By the mid-2000s the DOHC M272 had begun taking over; the last passenger-car M112s lingered into the late 2000s in vans and late G-Class applications, with commercial variants lasting longer still.

Versions.

Every factory version of the M112.

VersionDisplacementBore × StrokeCompressionPowerTorque
112.9112,398 cc 83.2 × 73.5 mm 10125 kW (168 hp; 170 PS) at 5,900 rpm225 N·m (166 lb·ft) at 3,000 rpm
112.9122,597 cc 89.9 × 68.2 mm 10.5125 kW (168 hp; 170 PS) at 5,500 rpm240 N·m (177 lb·ft) at 4,500 rpm
112.9132,597 cc 89.9 × 68.2 mm 10.5130 kW (175 hp; 177 PS) at 5,700 rpm240 N·m (177 lb·ft) at 4,500 rpm
112.9142,597 cc 89.9 × 68.2 mm 10.5125 kW (168 hp; 170 PS) at 5,500 rpm240 N·m (177 lb·ft) at 4,500 rpm
112.9162,597 cc 89.9 × 68.2 mm 10.5125 kW (168 hp; 170 PS) at 5,500 rpm240 N·m (177 lb·ft) at 4,500 rpm
112.9172,597 cc 89.9 × 68.2 mm 10.5130 kW (175 hp; 177 PS) at 5,700 rpm240 N·m (177 lb·ft) at 4,500 rpm
112.9212,799 cc 89.9 × 73.5 mm 10150 kW (201 hp; 204 PS) at 5,700 rpm270 N·m (199 lb·ft) at 3,000 rpm
112.9222,799 cc 89.9 × 73.5 mm 10150 kW (201 hp; 204 PS) at 5,700 rpm270 N·m (199 lb·ft) at 3,000 rpm
112.9232,799 cc 89.9 × 73.5 mm 10150 kW (201 hp; 204 PS) at 5,700 rpm270 N·m (199 lb·ft) at 3,000 rpm
112.9403,199 cc 89.9 × 84 mm 10160 kW (215 hp; 218 PS) at 5,700 rpm310 N·m (229 lb·ft) at 3,000 rpm
112.9413,199 cc 89.9 × 84 mm 10165 kW (221 hp; 224 PS) at 5,600 rpm315 N·m (232 lb·ft) at 3,000 rpm
112.942 (E 32)3,199 cc 89.9 × 84 mm 10160 kW (215 hp; 218 PS) at 5,700 rpm310 N·m (229 lb·ft) at 3,000 rpm
112.942 (E 32)3,199 cc 89.9 × 84 mm 10160 kW (215 hp; 218 PS) at 5,600 rpm310 N·m (229 lb·ft) at 3,000 rpm
112.9433,199 cc 89.9 × 84 mm 10165 kW (221 hp; 224 PS) at 5,600 rpm315 N·m (232 lb·ft) at 3,000 rpm
112.9443,199 cc 89.9 × 84 mm 10165 kW (221 hp; 224 PS) at 5,600 rpm315 N·m (232 lb·ft) at 3,000 rpm
112.9453,199 cc 89.9 × 84 mm 10158 kW (212 hp; 215 PS) at 5,500 rpm300 N·m (221 lb·ft) at 2,800 rpm
112.9463,199 cc 89.9 × 84 mm 10160 kW (215 hp; 218 PS) at 5,700 rpm310 N·m (229 lb·ft) at 3,000 rpm
112.9473,199 cc 89.9 × 84 mm 10160 kW (215 hp; 218 PS) at 5,700 rpm310 N·m (229 lb·ft) at 3,000 rpm
112.9493,199 cc 89.9 × 84 mm 10165 kW (221 hp; 224 PS) at 5,600 rpm315 N·m (232 lb·ft) at 3,000 rpm
112.951 (E 32 LR)3,199 cc 89.9 × 84 mm 10140 kW (187 hp; 190 PS) at 5,600 rpm270 N·m (199 lb·ft) at 2,750 rpm
112.951 (E 32 LR)3,199 cc 89.9 × 84 mm 10160 kW (215 hp; 218 PS) at 5,600 rpm305 N·m (225 lb·ft) at 2,800 rpm
112.951 (E 37)3,724 cc 97 × 84 mm 10170 kW (228 hp; 231 PS) at 5,600 rpm345 N·m (254 lb·ft) at 2,500 rpm
112.9533,199 cc 89.9 × 84 mm 10160 kW (215 hp; 218 PS) at 5,700 rpm310 N·m (229 lb·ft) at 3,000 rpm
112.9543,199 cc 89.9 × 84 mm 10165 kW (221 hp; 224 PS) at 5,600 rpm315 N·m (232 lb·ft) at 3,000 rpm
112.9553,199 cc 89.9 × 84 mm 10160 kW (215 hp; 218 PS) at 5,700 rpm308 N·m (227 lb·ft) at 3,000 rpm
112.9603,199 cc 89.9 × 84 mm 9260 kW (349 hp; 354 PS) at 6,100 rpm450 N·m (332 lb·ft) at 4,400 rpm
112.9613,199 cc 89.9 × 84 mm 9260 kW (349 hp; 354 PS) at 6,100 rpm450 N·m (332 lb·ft) at 4,400 rpm
112.9703,724 cc 97 × 84 mm 10173 kW (232 hp; 235 PS) at 5,750 rpm345 N·m (254 lb·ft) at 3,000 rpm
112.9723,724 cc 97 × 84 mm 10180 kW (242 hp; 245 PS) at 5,700 rpm350 N·m (258 lb·ft) at 3,000 rpm
112.9733,724 cc 97 × 84 mm 10180 kW (242 hp; 245 PS) at 5,750 rpm350 N·m (258 lb·ft) at 3,000 rpm
112.9753,724 cc 97 × 84 mm 10180 kW (242 hp; 245 PS) at 5,700 rpm350 N·m (258 lb·ft) at 3,000 rpm

Applications.

Every model powered by the M112.

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