157928 is a specific subcode for the Mercedes-AMG M157 series 5.5L twin-turbocharged V8 gasoline engine.
The M157 is a high-performance engine introduced by AMG in 2010. It was developed from the standard M278 4.7L engine architecture, with displacement increased to 5.5L by enlarging the bore and stroke, and is equipped with a twin-turbo system featuring higher boost pressure.
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Specifications:
Engine Code: M157 / 157928 (M157 DE55 AL Series)
Displacement: 5,461 cc (5.5 L)
Cylinder Configuration: 90° V8
Bore × Stroke: 98 mm × 90.5 mm
Compression Ratio: 10.0:1
Valve Train: DOHC 32-valve (4 valves per cylinder)
Variable Valve Timing: Dual VVT (intake and exhaust)
Fuel Delivery: Direct Injection (CGI, piezoelectric injectors)
Turbocharging: Twin-turbo (Garrett MGT2260MSL)
Maximum Power: 525–585 PS (approx. 386–430 kW), depending on model and performance package
Maximum Torque: 700–900 Nm
Cylinder Block / Cylinder Head Material: Aluminum Alloy
Timing Drive: Chain
Emissions Standard: Euro 5
Compatible Models ：
Since the M157.928 is a model-specific engine, its compatibility range is very precise:
Mercedes-Benz G 63 AMG: 2012–2018 (W463 chassis)
Mercedes-Benz G 63 AMG 6x6: 2013–2015 (W463 chassis)
Mercedes-Maybach G 650 Landaulet: (Some special custom versions use an M157-derived platform)
(Note: Other M157 variants in the same family, such as the M157.980/981, are installed in the S63, CLS63, E63, GLE63, etc.)
Common OE / OEM Replacement Part Numbers ：
Long Block / Engine Assembly: 1570100402, 1570100502, 1570101600, 1570102600
Short Block: 1570100800, 1570100900
Cylinder Head: 1570100120 (left), 1570100220 (right)
Turbos: 1570900180, 1570900280
Quantity (pieces) 1-10 11-50 >50
Lead time (days) 7 15 To be negotiated
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