Mercedes-Benz M273 Engine for Sale: What You Need to Know Before Buying

If you’re searching for a Mercedes-Benz M273 engine for sale, you’ve come to the right place. Whether you need a replacement for your worn-out powertrain or you’re working on a restoration project, the M273 engine offers exceptional performance and reliability. Here, in this guide, we will inform you about everything that you must pay attention to when buying a Mercedes-Benz M273 engine, from information and compatibility to defects and buying tips. What is important is for you to know that we handle premium-quality Mercedes-Benz M273 engines and reasonable prices which are guaranteed and monitored by industry professionals.

What is the Mercedes-Benz M273 Engine?

The Mercedes-Benz M273 Engine is a naturally aspirated Mercedes-Benz V8 engine employed on numerous luxury cars between 2005 and 2011. It is part of the company’s modular engine family and renowned for the combination of power, smoothness, and reliability.

Key Specifications:

• Configuration: V8

• Displacement: 4.7L (M273.923) and 5.5L (M273.963)

• Fuel System: Sequential fuel injection

• Valvetrain: Variable valve timing DOHC

• Materials: Aluminum alloy block and cylinder heads

• Horsepower: 335 hp to 382 hp (variant-specific)

• Torque: 339 lb-ft to 391 lb-ft

This engine appeared in certain Mercedes-Benz luxury vehicles, delivering stable power for highway cruising and energetic driving.

M273 Engine Models

In order to determine whether or when this engine is installed in your vehicle, the following are some of the most common Mercedes-Benz vehicles that included the Mercedes-Benz M273 Engine:

• Mercedes-Benz E-Class (E500, E550) [W211, W212]

• Mercedes-Benz S-Class (S500, S550) [W221]

• Mercedes-Benz CLS-Class (CLS500, CLS550)

• Mercedes-Benz GL-Class (GL450, GL550)

• Mercedes-Benz ML-Class (ML450, ML500, ML550)

• Mercedes-Benz R-Class (R500, R550)

Carefully check compatibility of the correct engine model (4.7L or 5.5L) and engine code before purchasing for proper support in your vehicle’s ECU and transmission.

Why Purchase a Mercedes-Benz M273 Engine?

There are many great reasons why an M273 engine is an investment worth making on your Mercedes-Benz vehicle:

Performance and Power

The M273 delivers excellent horsepower and torque in a naturally aspirated engine and is ideally designed for luxury and performance applications.

Engineering Excellence

Mercedes-Benz has built the M273 with aluminum construction, variable valve timing, among other cutting-edge specifications, and the outcome is a reflection of their commitment to durability and creativity.

Smooth Driving Experience

The M273 is generally praised by drivers as handsome and possessing silky smooth acceleration in various driving situations.

Long-Term Value

Under proper maintenance, this engine is capable of producing hundreds of thousands of miles of silky service.

And above all, we offer for sale Mercedes-Benz M273 engines, rebuilt or used, based on your needs and budget. Our engines undergo the rigors of strenuous testing, cleaning, and scrutiny to ensure quality of the highest standard.

Issues with the M273 Engine

Even though the M273 is mostly to be trusted, it does have some commonly encountered issues that would-be buyers need to be aware of:

Balance Shaft Gear Wear (Early Models)

A few of the early models (2006-2007 models particularly) have a problem with premature wear of balance shaft gears, which can trigger warning lights on the engine.

Timing Chain Tensioner Failure

Failure of the tensioner can cause rattling during engine start and lead to massive engine damage if left unrepaired.

Oil Leaks

Front cover seals and valve cover gaskets also develop oil leaks over time.

We meticulously inspect and repair these issues thoroughly in each used Mercedes-Benz M273 engine available for sale by us, ensuring you have an assurance of good working equipment.

Rebuilt vs. Used M273 Engines: What’s the Difference?

We offer rebuilt and used M273 engines. With the knowledge difference, you’ll be able to choose the ideal one:

Rebuilt Engines:

• Carefully apart taken down, cleaned, and inspected

• Worn parts with new OEM or similar parts replaced

• Assembled to factory standards or better

• Warranty with longer term

Used Engines:

• Less expensive

• Removed from running donor vehicles

• Could have additional miles

• Short warranty, but thoroughly inspected

If you desire peace of mind and long-term reliability, we highly suggest our rebuilt Mercedes-Benz M273 engines. If your budget is a little less stringent, though, and you’d prefer a fast replacement, our used engines are excellent choices too.

What to Look for When Buying an M273 Engine

Before making the last purchase, make sure to think about the following advice:

Check Engine Compatibility

Confirm that the model of the engine is compatible with your car year, model, and ECU specifications.

Mileage and Service History

Verify the mileage and the service history when buying second-hand engines. Less mileage is more desirable, complemented by healthy maintenance history.

Warranty and Support

Buy from authorized dealers only who offer an easy warranty and great support. We back all our Mercedes-Benz M273 Engines with a proper warranty and good customer support.

Installation Services

Other vendors, and we do too, can refer or affiliate with authorized installation facilities to help with the exchange.

We are a seasoned engine vendor with years of experience selling engines in high-quality engines like the

Mercedes-Benz M273. Here’s why our customers trust us:

Carefully Inspected Engines: Our engines are compression, oil pressure, and wear-tested before being shipped out of our facility.

Warranty Protection: Warranty protection for rebuilt and used engines is offered by us.

Expert Assistance: We are professionals and happy to assist you in finding the right engine for your vehicle.

Fast Shipping: Fast, nation-wide shipping to get your engine to you in an instant.

Fair Pricing: Reasonable pricing on used and rebuilt engines.

When you select us, you’re not buying an engine—you’re investing in reliability, performance, and quality service.

Installation and Post-Purchase Support

Purchasing the engine is just half the battle. We also offer support and materials to assist with a smooth installation process. If you’re having it installed by a local mechanic or installing it yourself, we can assist:

• Provide installation manuals and technical assistance

• Recommend local installers

• Offer break-in instructions for rebuilt engines

• Offer ECU compatibility or coding issue assistance

“I bought a remanufactured M273 engine for my S550 from these guys and am very happy. The engine is quiet like new, and the service was top-notch!” – Brian T.

Customer Reviews

“Great prices and quick shipping. My E550 is back on the road thanks to the engine that I purchased here. Five-star service!” – Lisa G.

“Support staff took me through the entire process of purchasing and made sure I got the same engine my mechanic needed. Sleek experience.” – Malik D.

Ready to Purchase a Mercedes-Benz M273 Engine?

Do you want to purchase a Mercedes-Benz M273 engine or require a rebuilt engine for long-lasting performance or a used engine to be cost-effective, we can offer you the solution.

Talk to one of our engine experts today to ask about availability, request a quote, or have a question answered.

Call us today or request a quote online!

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