Engine oil capacity
7.5 L
- Fill quantity listed for this engine
Porsche Boxster S 3.4 987Convertible · 3.4 litre · 228 kW
Jun 2009 – Dec 2011 · Convertible · Petrol · 3,436 cc
Engine, fluids, brakes, wheels and tyres, bulbs, battery and wipers for this car.
Other Boxster S 3.4 versions
Oil & fluids
Engine oil approval
Porsche A40
- Use an oil that carries this approval
Brake fluid
DOT 4
Gearbox oils
| Gearbox | Type | Fluid | Quantity |
|---|---|---|---|
| 7DT45 | — | Automatic transmission fluid | 5.2 L |
The gearbox figure is the quantity listed for the gearbox. A fluid change usually takes less, so fill to the correct level rather than to the figure.
Quantities and approvals as listed for this vehicle. Check the level after filling; a capacity is not a top-up amount.
Engine & drivetrain
Engine code
MA1.21
- 3,436 cc · 6 cylinders · 24 valves
- Naturally aspirated · direct injection
- Bore × stroke 97 × 77.5 mm
- Compression 12.5:1
Drive
Rear-wheel drive
Brake discs
| Axle | Disc size | Type | Minimum thickness | Applies to |
|---|---|---|---|---|
| Front | 318 × 28 mm | Vented | 26 mm | All versions |
| Rear | 299 × 24 mm | Vented | 22 mm | All versions |
Size is diameter × thickness. Replace a disc before it wears to its minimum thickness, which is also marked on the disc itself. Where two sizes are listed for one axle, the car's equipment decides which it has: measure the disc to be sure.
Wheels & tyres
Stud pattern
5 × 130
- Number of bolts × circle diameter (mm)
Wheel bolts
M14 × 1.5
- 19 mm hex head
Factory wheel and tyre sizes
| Wheel | Tyre size | Rim | Fitted to |
|---|---|---|---|
| 18-inch | 235/40 R18Mercedes-approved (MO) tyres listed | 8.0J × 18, offset ET57 | Front |
| 18-inch | 255/40 R18 | 9.0J × 18, offset ET43 | Rear |
| 18-inch | 265/40 R18 | 9.0J × 18, offset ET43 | Rear |
| 19-inch | 235/35 R19Mercedes-approved (MO) tyres listed | 8.5J × 19, offset ET55 | Front |
| 19-inch | 235/35 R19Mercedes-approved (MO) tyres listed | 8.0J × 19, offset ET57 | Front |
| 19-inch | 265/35 R19Mercedes-approved (MO) tyres listed | 10.0J × 19, offset ET42 | Rear |
| 19-inch | 265/35 R19Mercedes-approved (MO) tyres listed | 9.5J × 19, offset ET46 | Rear |
Sizes the parts catalogue lists for this car. A "Rear" row is the wider rear tyre on cars with different sizes front and rear. Your tyre placard, on the driver's door pillar, gives the sizes and pressures for the wheels your car was built with.
Bulbs
| Light | Bulb | Applies to |
|---|---|---|
| Headlight (low beam) | H7 · 55 W | Halogen |
| Headlight (low beam) | D2S xenon · 35 W | Xenon |
| High beam | H7 · 55 W | Xenon |
| High beam | H9 · 65 W | Halogen |
| Front fog light | H8 · 35 W | — |
| Indicator, front | P21W · 21 W | — |
| Indicator, rear | PY21W · 21 W | — |
| Daytime running light | H7 · 55 W | — |
| Parking / position light | W5W · 5 W | — |
| Brake / tail light | P21/5W · 21 W | — |
| Brake light | P21/5W | — |
| Reverse light | P21W · 21 W | — |
| Rear fog light | P21/4W | — |
| Rear fog / tail light | P21/4W · 21 W | — |
| Number plate light | C5W · 5 W | — |
| Interior light | W5W · 5 W | — |
Check the bulb you take out before buying a new one. Halogen, xenon and LED headlights use different bulbs, and LED lights usually have no bulb to replace.
Battery
| Case size (L × W × H) | Capacity | Cold cranking | Share of listings |
|---|---|---|---|
| 315 × 175 × 175 mm | 80 Ah | 730 A (EN) | 34% |
| 278 × 175 × 190 mm | 70 Ah | 760 A (EN) | 19% |
| 315 × 175 × 190 mm | 80 Ah | 800 A (EN) | 17% |
The main battery sizes listed for this car, most common first. The right one depends on the car's equipment, such as start-stop, so match the size, capacity and type printed on the battery you are replacing.
Spark plugs
Number
6
Thread
M14 × 1.25
Tightening torque
22 Nm
Engine, gearbox, brake, wheel, tyre, bulb, battery and plug details are taken from the parts makers' listings for this exact vehicle. Where those listings disagree, only the clear majority is shown.