M157 Engine

M157 Engine for Sale at Reliable Used Part

If you are searching for an M157 Engine for sale, Reliable Used Part makes it easier to find a reliable match. This listing covers Mercedes-Benz AMG S63, CL63, E63 and CLS63 for model years 2010–2017, so you can compare the options that suit your vehicle before you buy. Browse our used engine inventory or ask our team for help choosing the right unit.

This engine is listed at Reliable Used Part with options from $6,000–$14,000. Your final price depends on the unit and option you choose, so ask our team to confirm availability, condition, included components, and shipping details before you order. Whether you are completing a repair or a full rebuild, the M157 Engine is one of the most important parts to match correctly.

What Is the M157 Engine?

The M157 Engine is Mercedes-Benz’s 5.5-liter twin-turbocharged AMG V8 used in the S63, CL63, E63, CLS63 and G63.

Like any engine, it should be matched to your vehicle by model year, trim, and configuration. For a general overview of how this component works, see the Wikipedia entry on the internal combustion engine.

M157 Engine Compatibility and Fitment

The M157 Engine listing is intended for Mercedes-Benz AMG S63, CL63, E63 and CLS63 for model years 2010–2017. Exact compatibility depends on the model year, trim, engine, and drivetrain, so verify fitment before ordering. Ask us about current M157 Engine stock if you do not see the exact option you need.

• Models: AMG S63, CL63, E63, CLS63 and G63
• Model years: 2010–2017
• Engine and transmission options: 5.5L Twin-Turbo V8 M157

How to Confirm Fitment Before You Buy

Choosing the wrong engine is a costly mistake. Before ordering, run through these checks:

• Match the engine code, or the eighth character of your VIN, with the engine options listed for your vehicle.
• Confirm the model year, trim, displacement, and fuel type (gasoline, diesel, or hybrid).
• Note features that affect compatibility, such as turbocharging, direct injection, or variable valve timing.
• Check whether you also need related components such as the intake, wiring harness, sensors, or ECU.
• Ask our team to confirm availability, included components, and condition details before you order.

You can decode your VIN with the NHTSA VIN decoder and check for open safety recalls on the NHTSA recalls page before you start a major repair.

Signs You May Need a Replacement Engine

Not sure whether you need a replacement engine? Watch for these warning signs:

• Persistent knocking, ticking, or tapping noises from inside the engine
• Excessive oil consumption, oil leaks, or blue smoke from the exhaust
• Repeated overheating or coolant loss without an external leak
• Rough running, misfires, or low compression on one or more cylinders
• Metal particles in the oil, or a check engine light that returns after repairs

These symptoms can point to serious internal wear, but smaller faults can cause them too, so have a qualified technician diagnose the vehicle before you commit to a replacement.

Why Buy a Used Engine from Reliable Used Part?

Reliable Used Part supplies used engines to customers across the United States. Each M157 Engine listing is backed by our team, who can help confirm fitment, current availability, and warranty terms before you commit. Nationwide USA shipping is available, and you can contact Reliable Used Part for a quote, freight estimate, or delivery timeline. A properly matched M157 Engine helps your vehicle run smoothly after installation.

Working on more than one component? You may also want to look at our BMW S50 Engine and R34 Engine, or browse the full used engine inventory.

M157 Engine FAQs