Iridium Platinum Spark Plug compatible with Alfa Romeo 4C, 159, Brera, Giulietta, Spider; Subaru Forester, WRX
Features a 14mm spanner size and 26.5mm thread length for precise engine ignition. This listing is for a single (1) spark plug.
Key facts
- Part type
- Spark Plug
- Type
- Aftermarket replacement
Compatibility matrix
Only models verified by our team are listed| Parts for | Model | This part |
|---|---|---|
| Alfa Romeo | Alfa Romeo Giulietta | Fits |
| Alfa Romeo Brera | Fits | |
| Alfa Romeo Spider | Fits | |
| Alfa Romeo 159 | Fits | |
| Alfa Romeo 4C | Fits | |
| Subaru | Subaru WRX | Fits |
| Subaru Forester | Fits |
Only the models listed above have a confirmed catalog fit. If yours is absent, compatibility is unknown, not ruled out. Compare the exact model identifier and any published dimensions or connectors before ordering.
Where to find your model number
- Alfa Romeo, Subaru: Use your 17-character VIN. It's on the driver-side dashboard at the base of the windshield and on the driver's door jamb sticker. The year is in the 10th character. Also check your registration or the owner's manual.
General manufacturer guidance: exact label position can vary by model.
Spark Plug specifications
- Electrode Material
- Iraurita & Platinum
- Spanner Size
- 14mm
- Thread Diameter
- 12mm
- Thread Length
- 26.5mm
- Thread Size
- M12 x 1.25
- Installation Torque
- 15-20 Nm
Installation guide - Replacing spark plugs / ignition coils
General guidance for this part type - always follow your device manual- Spark plug socket, extension and ratchet
- Torque wrench
- Small pick for connector clips
- One cylinder at a time keeps coil wiring in the right order.
- Oil in a plug well points to a leaking valve cover gasket.
- 1Let the engine cool. Switch the engine off and let it cool fully; plugs removed from a hot aluminum head can strip its threads.
- 2Remove one coil. Work on one cylinder at a time. Press the connector clip, unplug it, undo the coil bolt and pull the coil straight out.
- 3Swap the plug. Blow dirt out of the plug well, unscrew the old plug and check the new plug's gap against your service manual.
- 4Fit by hand first. Thread the new plug in by hand for the first turns to avoid cross threading, then tighten to the value in your service manual. Refit the coil and connector.
- 5Repeat and test. Do each cylinder in turn, then start the engine and check for smooth idle and no warning light.
This is general guidance for the part type, not a model-specific procedure. If the part does not fit without force, stop and recheck compatibility.
Maintenance check
Signs it's time to replace
- 01Engine misfires or idles roughly
- 02Hard starting, especially on cold mornings
- 03Sluggish acceleration and reduced power
- 04Worse fuel economy than usual
More parts for Subaru Forester
See all Subaru Forester parts
FP-793CEB×1
12 month warranty on every part
Every part we sell is covered for 12 months from delivery. If it fails in normal use, we replace it or refund you , claim it straight from your order page.
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Questions & answers
+Which models does this spark plug fit?
Our team verified it for Alfa Romeo Giulietta, Subaru WRX, Alfa Romeo Brera, Alfa Romeo Spider, Subaru Forester, Alfa Romeo 159 and 1 more. The full list is in the compatibility table above.
+How do I make sure it fits my exact model?
Find the model number on your vehicle registration or VIN and compare it with the table above. Our fit guarantee covers verified models.
+What is the thread size?
Listed thread: M12 x 1.25. Confirm it matches your original plug.
+Is it hard to install?
Install difficulty: Advanced · mechanical experience needed. Step by step instructions are on this page.
+How fast will it arrive?
US orders arrive in 7 to 15 business days with free shipping. Other countries are shown at checkout.
+Is there a warranty?
Yes, a 12-month warranty is included, and you can extend it at checkout. Returns are accepted within 30 days.