This Bosch in-tank fuel pump is a direct-fit replacement for Porsche 718 Boxster/718 Cayman/991 applications listed in the fitment table below. It supplies fuel from the tank to the rest of the system and needs to match the car's original delivery requirements.
Bosch has been a global leader in automotive technology since 1886, pioneering innovations like electronic fuel injection and oxygen (lambda) sensors that shaped modern engine management. Today, Bosch supplies OEM-quality sensors, engine electronics, ignition components, and braking parts found in vehicles worldwide. Known for precision engineering and reliable performance, Bosch parts are built to factory specifications for dependable fitment and long-term durability.
Technical Details
- Manufacturer part number: 66857
- Type: In-tank fuel pump
- Application range: Porsche 718 Boxster/718 Cayman/991 (2017–2021)
- Function: Delivers fuel from the tank to the direct-injection system
Fitment & Compatibility
Use the fitment table below to confirm Porsche model, year, and submodel coverage. Where Porsche fitment changes by engine, trim, or production range, the table is the best place to verify the exact application before ordering.
If you want a second set of eyes on fitment before ordering, send us your VIN. We have been working with Porsche brake and parts applications for over 20 years, and we still take fitment questions seriously.
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2017 | Porsche | 718 Boxster | ||
| 2018 | Porsche | 718 Boxster | ||
| 2019 | Porsche | 718 Boxster | ||
| 2020 | Porsche | 718 Boxster | ||
| 2021 | Porsche | 718 Boxster | Base | |
| 2021 | Porsche | 718 Boxster | S | |
| 2021 | Porsche | 718 Boxster | T | |
| 2017 | Porsche | 718 Cayman | ||
| 2018 | Porsche | 718 Cayman | ||
| 2019 | Porsche | 718 Cayman | ||
| 2020 | Porsche | 718 Cayman | Base | |
| 2021 | Porsche | 718 Cayman | Base | |
| 2020 | Porsche | 718 Cayman | S | |
| 2021 | Porsche | 718 Cayman | S | |
| 2020 | Porsche | 718 Cayman | T | |
| 2021 | Porsche | 718 Cayman | T | |
| 2017 | Porsche | 911 | Carrera | |
| 2018 | Porsche | 911 | Carrera | |
| 2019 | Porsche | 911 | Carrera | |
| 2017 | Porsche | 911 | Carrera 4 | |
| 2018 | Porsche | 911 | Carrera 4 | |
| 2019 | Porsche | 911 | Carrera 4 | |
| 2018 | Porsche | 911 | Carrera 4 GTS | |
| 2019 | Porsche | 911 | Carrera 4 GTS | |
| 2017 | Porsche | 911 | Carrera 4S | |
| 2018 | Porsche | 911 | Carrera 4S | |
| 2019 | Porsche | 911 | Carrera 4S | |
| 2018 | Porsche | 911 | Carrera GTS | |
| 2019 | Porsche | 911 | Carrera GTS | |
| 2017 | Porsche | 911 | Carrera S | |
| 2018 | Porsche | 911 | Carrera S | |
| 2019 | Porsche | 911 | Carrera S | |
| 2018 | Porsche | 911 | Carrera T | |
| 2019 | Porsche | 911 | Carrera T | |
| 2017 | Porsche | 911 | Targa 4 | |
| 2018 | Porsche | 911 | Targa 4 | |
| 2019 | Porsche | 911 | Targa 4 | |
| 2018 | Porsche | 911 | Targa 4 GTS | |
| 2019 | Porsche | 911 | Targa 4 GTS | |
| 2017 | Porsche | 911 | Targa 4S | |
| 2018 | Porsche | 911 | Targa 4S | |
| 2019 | Porsche | 911 | Targa 4S |