- S Class 221 Type S550 Rwd 2011, 2010
Mercedes S Class 221 Type, S550, RWD - Engine (2010-2011)
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- 1Enter or confirm your VIN
- 2We verify exact fitment for your vehicle
- 3Flat freight shown up front — no surprises
- 490-day warranty included on every part
- 5We photograph & confirm the unit before it ships
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About this part
Mercedes-Benz S550 Engine For 2010-2011 RWD Models
This refined 382 HP V8 engine delivers exceptional performance and luxury for your Mercedes-Benz S550, combining sophisticated technology with smooth, effortless power.
Engine Specifications:
| Category | Details |
|---|---|
| Engine Code | M273 E55 |
| Displacement | 5.5L V8 |
| Aspiration | Naturally Aspirated |
| Horsepower | 382 HP |
| Torque | 391 lb-ft |
| Fuel System | Sequential Multi-Point Fuel Injection |
| Valvetrain | DOHC 32-valve |
| Transmission | 7-Speed Automatic |
| Drivetrain | RWD |
| Engine Block | Aluminum alloy block and heads |
Key Features:
Complete Long Block Assembly: Includes the fully assembled engine block, crankshaft, pistons, cylinder head, and valvetrain.
Includes Intake & Exhaust Manifolds: Comes with both manifolds pre-attached, saving installation time.
Backed by Warranty: Provides a reliable warranty on the entire assembly for peace of mind.
Pricing Options:
| Mileage Range | Price | Condition |
|---|---|---|
| 30K-60K miles | $ 2,600.00 | Like-new condition, minimal wear |
| 60K-90K miles | $ 1,993.68 | Light use, excellent condition |
| 90K-120K miles | $ 1,755.00 | Good condition, fully functional |
| 120K-150K miles | $ 1,300.00 | Budget option, may require minor service |
Shipping Information:
Standard shipping 5-7 business days.
Expedited shipping available for an extra cost.
Frequently Asked Questions?
Q: How do I confirm my S550 has the M273 engine?
A: The S550 for 2010-2011 RWD models exclusively used the M273 5.5L V8 engine. You can confirm by checking the engine designation on the engine cover and the vehicle identification number VIN.
Q: What maintenance is critical for this engine?
A: To keep the Mercedes S Class 221 S550 engine running strong, change the oil regularly, replace spark plugs on time, and flush the coolant to stop overheating. Swap air and fuel filters often to keep fuel burning right. Check the timing chain to avoid big repairs. Stay bold with this care, and the engine will perform at its best.
Q: What are common issues with the M273 engine?
A: The M273 engine in the Mercedes S Class 221 S550 can have some common problems like timing chain wear that can damage the engine. Valve cover gasket leaks cause oil loss and mess. Intake manifold leaks can hurt performance and fuel use. Ignition coil failures may cause rough starts or misfires. Handle these issues quickly to keep your engine strong.
Ready to Order?
Restore your Mercedes-Benz S550's legendary performance with a quality replacement M273 V8 engine. Experience the smooth power and sophistication that defines the S-Class.
Tested, VIN-matched, and guaranteed
VIN-Verified Fit
We match the part to your vehicle's VIN and confirm exact fitment before we ship — so it fits the first time. Free cancellation within 24 hours.
Works on Arrival, Guaranteed
Every unit is tested before it ships. If it arrives defective, we replace it fast — and in the rare case we can't replace it, you get a full refund.
90-Day Warranty
A real parts-replacement warranty, included — with extended coverage available.
Heavy freight item, shipped fully insured and tracked. Freight is a flat $250 commercial / $400 residential, shown at checkout — no hidden fees, no freight-quote runaround.
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