Frequently Bought Together
Mercedes-Benz M278 4.7L V8 Piston Set of 8 A2780302317 S550 E550 GL550 2011-2020
Fitment
| Brand | Model | Year |
|---|---|---|
| Mercedes-Benz | CLS (C218) CLS 500 | 2011 - 2017 |
| Mercedes-Benz | CLS (C218) CLS 500 4-matic | 2011 - 2017 |
| Mercedes-Benz | CLS Shooting Brake (X218) CLS 500 | 2012 - 2017 |
| Mercedes-Benz | CLS Shooting Brake (X218) CLS 500 4-matic | 2012 - 2017 |
| Mercedes-Benz | E-CLASS (W212) E 500 | 2011 - 2015 |
| Mercedes-Benz | E-CLASS (W212) E 500 4-matic | 2011 - 2015 |
| Mercedes-Benz | E-CLASS Convertible (A207) E 500 | 2011 - 2016 |
| Mercedes-Benz | E-CLASS Coupe (C207) E 500 | 2011 - 2016 |
| Mercedes-Benz | E-CLASS T-Model (S212) E 500 | 2011 - 2016 |
| Mercedes-Benz | E-CLASS T-Model (S212) E 500 4-matic | 2011 - 2016 |
| Mercedes-Benz | GL-CLASS (X166) GL 500 4-matic | 2012 - 2015 |
| Mercedes-Benz | GLE Coupe (C292) 500 4-matic | 2015 - 2019 |
| Mercedes-Benz | M-CLASS (W166) ML 500 4-matic | 2012 - 2015 |
| Mercedes-Benz | S-CLASS (W221, V221) S 500 CGI | 2011 - 2013 |
| Mercedes-Benz | S-CLASS (W221, V221) S 500 CGI 4-matic | 2011 - 2013 |
| Mercedes-Benz | S-CLASS (W222, V222, X222) S 500 | 2013 - 2017 |
| Mercedes-Benz | S-CLASS (W222, V222, X222) S 500 4-matic | 2013 - 2017 |
| Mercedes-Benz | S-CLASS (W222, V222, X222) S 500 Maybach | 2014 - 2017 |
| Mercedes-Benz | S-CLASS (W222, V222, X222) S 500 Maybach 4-matic | 2015 - 2017 |
| Mercedes-Benz | S-CLASS Convertible (A217) S 500 | 2015 - 2017 |
| Mercedes-Benz | S-CLASS Coupe (C216) CL 500 | 2011 - 2013 |
| Mercedes-Benz | S-CLASS Coupe (C216) CL 500 4-matic | 2011 - 2013 |
| Mercedes-Benz | S-CLASS Coupe (C217) S 500 | 2014 - 2017 |
| Mercedes-Benz | S-CLASS Coupe (C217) S 500 4-matic | 2014 - 2017 |
| Mercedes-Benz | SL (R231) 500 | 2012 - 2020 |
Specifications
- Description
- Shipping
- Reviews
Mercedes-Benz M278 4.7L V8 Piston Set of 8, A2780302317
This is a set of 8 pistons, part number A2780302317, for the Mercedes-Benz M278 4.7L biturbo V8 engine, covering one complete engine (8 cylinders). It fits S550, E550 and GL550 models, among others, model years 2011-2020.
Quick Facts:
- Product: Engine piston set, 8 pieces (one engine)
- Part Number: A2780302317 (also written A 278 030 23 17 and 2780302317)
- Engine: M278 4.7L (4663cc) twin-turbo V8
- Piston Diameter: 92.9 mm
- Wrist Pin Diameter: 24 mm
- Fits: Mercedes-Benz S550, E550, GL550 and other M278 4.7L models
- Model Years: 2011-2020
Vehicle Compatibility (M278 4.7L V8):
- Mercedes-Benz S550: 2012-2017
- Mercedes-Benz E550: 2012-2014
- Mercedes-Benz GL550: 2013-2016
- Mercedes-Benz GLS550: 2017-2019
- Mercedes-Benz CL550: 2011-2014
- Mercedes-Benz CLS550: 2012-2018
- Mercedes-Benz SL550: 2013-2020
- Mercedes-Benz ML550: 2012-2014
Confirm the M278 engine code and VIN before ordering.
When Pistons Are Replaced:
Pistons are replaced during an engine rebuild or when the cylinders, pistons or rings are damaged. Typical reasons include:
- Excessive oil consumption from worn pistons, rings or bores
- Scored or damaged cylinder walls and pistons
- Loss of compression
- Engine rebuild after bearing or timing chain failure
Installation Notes:
- Replace all 8 pistons together as one set
- Have cylinder bores measured and honed or machined to suit the piston size
- Confirm piston size grade (standard or oversize) before machining
- Fit new rings, gaskets and bearings during the rebuild
- Professional engine builder installation required
Frequently Asked Questions:
Which Mercedes models use piston A2780302317?
It is used in M278 4.7L V8 engines, including the S550 (2012-2017), E550 (2012-2014) and GL550 (2013-2016), as well as the GLS550, CL550, CLS550, SL550 and ML550.
How many pistons are in this set?
The set contains 8 pistons, enough to rebuild one complete M278 V8 engine.
What engine is this piston for?
It is for the Mercedes-Benz M278 4.7L (4663cc) twin-turbo V8.
What size are the pistons?
The piston diameter is 92.9 mm with a 24 mm wrist pin.
Can I replace just one piston?
You can, but rebuilds normally replace all 8 together so every cylinder has matching weight and size.
Where does this part ship from?
Europarts360 ships from warehouses in Dubai (UAE) and Delaware (USA) and delivers worldwide.
OEM Reference: A2780302317, A 278 030 23 17, 278-030-23-17-64
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Order Processing
For custom and special orders, we will contact you directly with an estimated timeframe before dispatch.
Estimated Delivery Times
International delivery times are estimates and may be affected by customs clearance procedures in the destination country.
Shipping Rates
United States (USA)
| Order Type | Rate (USD) |
|---|---|
| Eligible Designated Items (USA only) | $10.00 flat |
| Standard Orders: $0.00 – $300.00 | $75.00 |
| Standard Orders: $300.01 and up | Free |
The $10 flat rate applies only to select qualified products. If eligible $10 items are purchased alongside standard products, shipping is calculated per item profile and combined at checkout.
Rest of World
For all other destinations, orders over $300 ship free. Orders under $300 are charged a flat rate:
| Order Subtotal | Rate (USD) |
|---|---|
| $0.00 – $300.00 | $75.00 |
| $300.01 and up | Free |
Planning a large purchase? Contact us before placing your order to ask about bulk shipping discounts.
Order Tracking
Once your order ships, you will receive a confirmation email with a tracking number. You can monitor your shipment through your Europarts360 account or directly on the courier's website (DHL, FedEx, UPS, etc.).
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- For international orders, the recipient is responsible for all customs duties, taxes, and import fees levied by the destination country.
- Europarts360 is not liable for delays caused by customs processing or incorrect shipping information provided at checkout.
- Please double-check your delivery details before placing your order to ensure a smooth delivery.
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