Porsche Boxster S 3.2: Specs, Engine Codes, ECUs & Maintenance
Porsche · Engine Information · U.S. & Canada
Boxster S 3.2 · M96The first Boxster S uses a 3.2-litre port-injected flat-six and a six-speed manual as standard. The 987 version raised output to 280 hp for 2005–2006. Its engine codes and bearing revisions matter more for servicing than the S badge alone.
Engine & construction
- Codes
- M96.21 / M96.24 / M96.26
- Displacement
- 3,179 cc
- Bore × stroke
- 93 × 78 mm
- Layout
- Flat-six · DOHC · 24 valves
- Injection / cams
- Port injection · intake VarioCam
Output & driveline
- Power
- 250–280 published hp by year
- Torque
- 225–236 lb-ft
- Oil system
- Integrated sump
- Transmission
- 6-speed manual / 5-speed Tiptronic
- Installation
- Mid-engine · rear-wheel drive
Vehicles & model years
| Model / platform | Model years | Code | Published hp / lb-ft |
|---|---|---|---|
| Boxster S · 986 | 2000–2002 | M96.21 | 250 / 225 |
| Boxster S · 986 | 2003–2004 | M96.24 | 258 / 229 |
| 550 Spyder Anniversary · 986 | 2004 | M96.24 family | 264 / 229 |
| Boxster S · 987.1 | 2005–2006 | M96.26 | 280 / 236 |
Engine controllers
| Application | DME / ECU | Identification details |
|---|---|---|
| 2000–2002 986 S | Bosch ME7.2 | Match the original or replacement DME. |
| 2003–2004 986 S | Bosch ME7.8 | Calibration varies with engine and transmission. |
| 2005–2006 987 S | Bosch ME7.8 | Identify the fitted hardware and software. |
Tool catalogues list ST10/C167-class control hardware; exact processor and memory require the DME identification.
Common issues & maintenance
Bearing failure is a documented concern. Early bearing types and later enlarged internal bearings require different repair approaches; identify the engine build.
A failing diaphragm can produce excessive crankcase vacuum, smoke or running faults. Measure vacuum and rule out other causes.
Cracked coil housings can admit moisture and cause misfires. Inspect plugs and coils using Porsche diagnosis guidance.
Use the VIN-specific Porsche-approved oil, maintain the correct level and warm the oil before high rpm. Check service history and investigate smoke, misfires or rising oil use promptly. Bearing design follows the installed engine, especially on cars with replacement engines.
References
| Specifications | Porsche North American 2005 Boxster release |
| Engine codes | Porsche 986 parts catalogue |
| Ignition | Porsche coil bulletin 58/12 |
| Crankcase ventilation | LN Engineering separator information |
