Crankcase Vent Valve / Oil Separator (Left Bank)
Brand new replacement crankcase ventilation (PCV) oil separator for the Porsche M48 4.8L V8 engine. This die-cast aluminum housing mounts on the left cylinder bank (cylinders 5, 6, 7, 8) and replaces the factory plastic diaphragm housing that commonly cracks, causing vacuum leaks, whistling noises, oil consumption, rough idle and check-engine lights.
Part Information
| OE Number | 948-107-236-02 |
| Replaces / Supersedes | 948-107-236-01 |
| Part Name | Crankcase Vent Valve / Oil Separator / PCV Housing |
| Placement on Vehicle | Left Bank — Cylinders 5, 6, 7, 8 |
| Engine | Porsche M48 4.8L V8 (naturally aspirated) |
| Housing Material | Die-cast aluminum (upgrade vs. factory plastic) |
| Condition | Brand New — Direct Replacement |
Fitment
| Vehicle | Years | Engine / Trim |
|---|---|---|
| Porsche Cayenne (957) S | 2008 – 2010 | 4.8L V8 M48.00 / M48.01 |
| Porsche Cayenne (957) GTS | 2008 – 2010 | 4.8L V8 M48.01 |
Why Replace
- Fixes the common whistling / sucking noise from the engine bay caused by a cracked diaphragm.
- Stops oil consumption / smoke from exhaust caused by failed crankcase ventilation.
- Restores smooth idle and corrects lean-running / check-engine complaints.
- Upgraded aluminum housing resists the heat-cycling cracking that plagues the original plastic cover.
- Direct bolt-on replacement — matches bolt pattern, vacuum ports and coolant return fitting.
Important Notes
- This is the LEFT side (cylinders 5–8) only. The right-side (cylinders 1–4) separator is a different part number — please order separately if both banks need service.
- Does NOT fit Cayenne V6, Cayenne Turbo / Turbo S, or the later 958 chassis (2011+).
- Please verify the OE number on your original housing (948-107-236-01 or -02) before purchase.
- Gaskets / seals are not included unless shown in photos. Professional installation recommended.
Shipping Address
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● Order placed on weekends or holiday will be shipped on Monday or next
If you have any questions, Please contact me .We will reply to you with in 12 hours.
On Oct 29, 2026 at 03:00:48 PDT, seller added the following information: