Pay in installments of $33.75 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 13 - Aug 18
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Mercedes Benz S550 E550 GL550 Engine Exhaust Valve Set 16 4.7 V8 M278 2780500427High Quality Car Parts for Your Mercedes Benz Upgrade your Mercedes Benzs performance with our premium replacement pistons. Designed to fit all M278 4. 7L Turbo V8 engines. OEM Part Numbers Positions Other Names Notes Model 278 050 04 27 Engine Head Outlet Valve Mercedes Benz S550, E550, GL550, CLS550, SL550 & more Compatibility Year Make Model Engine 2020 Mercedes Benz SL 550 4. 7L V8 Gas 2019 Mercedes Benz GLS 550 4. 7L V8 Gas 2019 Mercedes Benz SL
High-Quality Car Parts for Your Mercedes-Benz
Upgrade your Mercedes-Benz’s performance with our premium replacement pistons. Designed to fit all M278 4.7L Turbo V8 engines.
| OEM Part Numbers | Positions | Other Names | Notes | Model |
|---|---|---|---|---|
| 278-050-04-27 | Engine Head | Outlet Valve | Mercedes-Benz S550, E550, GL550, CLS550, SL550 & more |
Compatibility
| Year | Make | Model | Engine |
|---|---|---|---|
| 2020 | Mercedes-Benz | SL 550 | 4.7L V8 - Gas |
| 2019 | Mercedes-Benz | GLS 550 | 4.7L V8 - Gas |
| 2019 | Mercedes-Benz | SL 550 | 4.7L V8 - Gas |
| 2018 | Mercedes-Benz | CLS 550 | 4.7L V8 - Gas |
| 2018 | Mercedes-Benz | GLS 550 | 4.7L V8 - Gas |
| 2018 | Mercedes-Benz | SL 550 | 4.7L V8 - Gas |
| 2017 | Mercedes-Benz | CLS 550 | 4.7L V8 - Gas |
| 2017 | Mercedes-Benz | E 550 | 4.7L V8 - Gas |
| 2017 | Mercedes-Benz | GLS 550 | 4.7L V8 - Gas |
| 2017 | Mercedes-Benz | Maybach S 550 | 4.7L V8 - Gas |
| 2017 | Mercedes-Benz | S 550 | 4.7L V8 - Gas |
| 2017 | Mercedes-Benz | SL 550 | 4.7L V8 - Gas |
| 2016 | Mercedes-Benz | CLS 550 | 4.7L V8 - Gas |
| 2016 | Mercedes-Benz | E 550 | 4.7L V8 - Gas |
| 2016 | Mercedes-Benz | GL 550 | 4.7L V8 - Gas |
| 2016 | Mercedes-Benz | S 550 | 4.7L V8 - Gas |
| 2016 | Mercedes-Benz | SL 550 | 4.7L V8 - Gas |
| 2015 | Mercedes-Benz | CLS 550 | 4.7L V8 - Gas |
| 2015 | Mercedes-Benz | E 550 | 4.7L V8 - Gas |
| 2015 | Mercedes-Benz | GL 550 | 4.7L V8 - Gas |
| 2015 | Mercedes-Benz | S 550 | 4.7L V8 - Gas |
| 2015 | Mercedes-Benz | SL 550 | 4.7L V8 - Gas |
| 2014 | Mercedes-Benz | CL 550 | 4.7L V8 - Gas |
| 2014 | Mercedes-Benz | CLS 550 | 4.7L V8 - Gas |
| 2014 | Mercedes-Benz | E 550 | 4.7L V8 - Gas |
| 2014 | Mercedes-Benz | GL 450 | 4.7L V8 - Gas |
| 2014 | Mercedes-Benz | GL 550 | 4.7L V8 - Gas |
| 2014 | Mercedes-Benz | ML 550 | 4.7L V8 - Gas |
| 2014 | Mercedes-Benz | S 550 | 4.7L V8 - Gas |
| 2014 | Mercedes-Benz | SL 550 | 4.7L V8 - Gas |
| 2013 | Mercedes-Benz | CL 550 | 4.7L V8 - Gas |
| 2013 | Mercedes-Benz | CLS 550 | 4.7L V8 - Gas |
| 2013 | Mercedes-Benz | E 550 | 4.7L V8 - Gas |
| 2013 | Mercedes-Benz | GL 450 | 4.7L V8 - Gas |
| 2013 | Mercedes-Benz | GL 550 | 4.7L V8 - Gas |
| 2013 | Mercedes-Benz | ML 550 | 4.7L V8 - Gas |
| 2013 | Mercedes-Benz | S 550 | 4.7L V8 - Gas |
| 2013 | Mercedes-Benz | SL 550 | 4.7L V8 - Gas |
| 2012 | Mercedes-Benz | CL 550 | 4.7L V8 - Gas |
| 2012 | Mercedes-Benz | CLS 550 | 4.7L V8 - Gas |
| 2012 | Mercedes-Benz | E 550 | 4.7L V8 - Gas |
| 2012 | Mercedes-Benz | ML 550 | 4.7L V8 - Gas |
| 2012 | Mercedes-Benz | S 550 | 4.7L V8 - Gas |
| 2011 | Mercedes-Benz | CL 550 | 4.7L V8 - Gas |
Enhance your driving experience with our high-performance Mercedes-Benz M278 pistons. Order now for reliability and precision you can trust.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 27 reviews
Sort
Product Reviews
★★★★★ 5
10 out of 10
The must do service package. This is a "fits multiple" kit so youll have some extras. The kit also includes the lower unit gear oil seals, which is awesome. I always trust quicksilver to be durable and a great value for the money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 23, 2026
★★★★★ 5
Recommended replacement parts
Worked as advertised, quicksilver parts for replacement on alpha drive gen 2 outdrive.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026
★★★★★ 5
Very complete kit
This Kit has everything you need to change your waer pump impellor. It comes with directions that are easy to follow, but there re plenty of videos available to help. The Quicksilver kit is priced well and was delivered quickly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 13, 2025
★★★★★ 5
Perfect OEM fit
Fixed my impeller on my Mercury Salt Water 115. Best done as a two man job. Lots of videos available online .
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
★★★★★ 4
Fits 2001 Bayliner
This product was definitely different than the original I have a 2001 Bayliner with a 3.0 MerCruiser and an alpha one second GEN drive The kit worked but the bottom gasket had a weird cut different than the original I added a gasket maker just in case (Yamaha Lube) Brand! All in all kit was fine, One thing to note is the directions that come with the kit at least for my version we’re not for the same alpha one second GEN 4 stroke kit that I got they were for a two-stroke in the pictures didn’t look the same as the parts that I had got which is fine but it’s miss leading when you send a 4 stroke kit but 2 stroke 90hp to 200hp alpha one directions! If it craps out this review will change
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 30, 2020
recommand products
Genuine Jaguar E-Pace 2017+ LH Lower Rear Door Seal J9C2913
26.00
sh 7590 bn
100.00
hijab 13
35.00
Knightsbridge EX004H 100mm/4 inch LED Backlit Extractor Fan with Humidistat & Overrun Timer - Black & Stainless Steel
56.94
Knightsbridge CALCO3BBC CALLA 230V E27 Contemporary 3 Light Bar Pendant - Brushed Chrome
44.43