- SL Class 221 Type S550 Rwd 2012
Mercedes SL Class 221 Type, S550, RWD - Engine (2012)
4.5 on Trustpilot · 335 reviewsHow ordering works
- 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
Authentic OEM 4.7L Biturbo V8 engine for the 2012 Mercedes S550, designed to fit the RWD 221 chassis
This complete M278 engine replacement is designed specifically for the 2012 Mercedes SL Class 221 S550 RWD, ensuring seamless integration and optimal performance
Engine Specifications:
| Category | Details |
|---|---|
| Engine Code | M278 DE 46 AL |
| Displacement | 4.7L Biturbo V8 |
| Horsepower | 429 HP |
| Torque | 516 lb-ft |
| Fuel System | Direct + Port Injection |
| Block Material | Aluminium block/heads |
Key Features:
Dual Intercoolers: The 2012 Mercedes SL Class 221 S550 RWD engine has dual intercoolers that help cool the air for better performance.
Updated Fuel System: The 2012 Mercedes SL Class 221 S550 RWD engine features an improved fuel system for better performance and fuel efficiency..
OEM Turbo Actuators: The 2012 Mercedes SL Class 221 S550 RWD engine has original turbo actuators that help control the turbo for better power and response.
Pricing Options:
| Mileage Range | Price | Condition |
|---|---|---|
| 30K-60K miles | $ 8,706.10 | Low-mileage, full service history |
| 60K-90K miles | $ 6,895.20 | Excellent, minor wear |
| 90K-120K miles | $ 6,500.00 | Good, may need gaskets |
| 120K-150K miles | $ 6,110.00 | Functional, needs timing service |
Shipping Information:
Dimensions: Length 46"× Width 34"× Height 36"
Weight: 550 lbs
Shipping Options:
Standard shipping 5-7 business days
Expedited shipping are available for an extra cost
Frequently Asked Questions?
Q: Are engines tested for quality before shipping?
A: This 2012 Mercedes SL Class 221 S550 RWD engine is thoroughly tested by experts for noise, leaks, and compression. Only top-grade engines are sold to ensure reliability.
Q: How does my engine arrive?
A: The engine is securely shrink-wrapped and mounted on a 3x3 pallet, with all fluids drained. It ships safely via carriers like FedEx, R&L, XPO, or YRC.
Q: What comes with my used engine?
A: Engine Block, Head Gasket, Cylinder Heads, Manifolds, consumption, Exhaust, Timing cowl, Oil Pans, Cylinder Head, Pistons, Crank Shafts
Ready to Order?
Ideal for professional repairs or upgrades, it supports sustained durability and efficiency for your luxury coupe.
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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