The M157 engine is a 5.5-liter twin-turbocharged V8 developed by Mercedes-AMG, designed to deliver thrilling performance with luxury-grade refinement. Producing between 518–577 horsepower, it combines direct injection, bi-turbo efficiency, and remarkable torque delivery. Found in AMG models like the E63, CLS63, and S63, it offers explosive acceleration with long-lasting reliability.
Features
Tested Engine with Warranty
Hassle-Free Returns Available
Live Customer Support
Direct Fit for Your Vehicle
Description
The M157 engine is a 5.5L twin-turbocharged V8 masterpiece created by Mercedes-AMG to replace the naturally aspirated M156. It uses advanced direct fuel injection, twin water-cooled turbochargers, and air-to-water intercooling to achieve peak outputs between 518 hp and 577 hp, with torque reaching up to 664 lb-ft in its highest tune. The aluminum block construction, forged internals, and lightweight design help deliver immense power while maintaining impressive efficiency and durability.
This AMG-built motor powers high-performance sedans and coupes such as the Mercedes-Benz E63 AMG, CLS63 AMG, S63 AMG, and GL63 AMG. Known for its deep exhaust note and instant throttle response, the M157 remains a favorite among tuners and enthusiasts for both street and track performance.
M157 fitment is application and variant specific. The E63, CLS63, S63, and ML63/GL63 applications have different calibrations, oil pan designs, and accessory configurations. Our VIN verification confirms the exact M157 variant for your specific AMG application before it ships.
Mercedes AMG owners comparing a used engine, a remanufactured engine, and an OEM engine for the M157 understand that AMG specialist rebuild costs are substantial. Choosing a used Mercedes M157 engine from a verified low-mileage AMG donor gives you the factory biturbo V8 as an OEM engine — the original AMG turbocharger configuration, the factory power output, the original AMG assembly — at a price that makes maintaining these exceptional performance vehicles practically sensible. No remanufactured engine built from a reconditioned core delivers the factory AMG assembly identity that a used OEM M157 provides.
Every used Mercedes M157 engine ships with up to a 90-day warranty and arrives within 2 to 5 business days. Installation is not included. AMG specialist installation is required. These are genuine Mercedes-Benz AMG OEM engines, and we stand behind every unit.
Specifications
Product Type
Engine
Displacement (Engine Size)
5.5L Bi-Turbo V8
Fuel Type
Gasoline
Availability
In Stock
Shipping
Nationwide Available
Use Case
Ideal for performance builds, swaps, and replacements
Frequently Asked Questions
What vehicles use the M157 engine?
The M157 engine powers AMG models like the E63, CLS63, S63, ML63, and GL63, offering a balance of luxury and race-grade performance.
How much power does the M157 make?
Depending on the variant, the M157 engine produces between 518–577 horsepower and up to 664 lb-ft of torque in the S-Model configuration.
Is the M157 engine reliable?
Yes, the M157 is reliable when serviced regularly. Each used M157 engine we sell is inspected and tested for top performance.
Can the M157 be tuned for more power?
Definitely. With ECU remapping and upgraded cooling, the M157 can safely produce over 650 horsepower while retaining OEM drivability.
What makes the M157 better than the M156?
The M157 engine adds twin turbos, improved torque, and greater fuel efficiency over the M156, making it one of AMG’s most advanced powertrains.
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Shipping Policy
Our shipping policy is flexible, as the shipping charges depend on the location. A few certain remote regions like CO, UT, NY, OR, & CA may have additional shipping charges or delivery fees. However, some circumstances may cause delays, but we always strive to deliver your order as quickly as possible.
Please note that all shipping times are estimates and not guaranteed. We examine all rebuilt and used engines before shipment and aim to provide high-quality used engines and transmissions. Shipping details and fees will be disclosed to consumers before any transactions are made. Our team is operational 24/7, and you can call us at +1-888-799-0188 to place an order.
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