The Bosch WR8DS spark plug (OEM 99917006290) fits several classic Porsche models including the 944 2.5L (1983-1984) and 928 4.5L/4.7L (1978-1984). It provides the reliable ignition needed for these vintage engines, ensuring smooth operation and preventing common spark-related issues. Bosch's platinum construction offers extended service intervals.
Key Features & Benefits
- Part Number: 99917006290 (OEM cross: Bosch WR8DS).
- Application: Porsche 944 2.5L (1983-1984), Porsche 928 4.5L/4.7L (1978-1984).
- Bosch Platinum: Provides longer life and stable performance.
- OEM Fitment: Direct replacement for original equipment.
- Corrosion Resistance: Anti-tarnish shell ensures reliable connection.
Vehicle Fitment
| Make | Model | Years | Engine |
|---|---|---|---|
| Porsche | 944 | 1983–1984 | 2.5L4 |
| Porsche | 928 | 1983–1984 | 4.7V8 |
| Porsche | 928 | 1978–1982 | 4.5V8 |
Technical Specifications
| Part Number | 99917006290 |
| Cross Reference | Bosch WR8DS |
| Brand | BOSCH |
| Type | Spark Plug |
| Electrode Material | Platinum (assumed) |
Installation Notes
Professional installation recommended; gap should be checked and adjusted to factory specs.
About BOSCH
Bosch is a premier OE supplier for European automobiles, with decades of expertise in ignition technology.
This part also goes by the following cross reference.
Cross Reference Part Number:
Fits These Vehicles
| Make | Model | Engine | Years |
|---|---|---|---|
| Porsche | 944 | 2.5L4 | 1983–1984 |
| Make | Model | Engine | Years |
|---|---|---|---|
| Porsche | 928 | 4.7V8 | 1983–1984 |
| Porsche | 928 | 4.5V8 | 1978–1982 |