Volvo Penta Oil Trap | OEM Crankcase Ventilation Separator 21690243
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Volvo Penta OEM Oil Trap — Crankcase Ventilation Separator
Part Number: 21690243 | SKU: 21690243
Brand: Volvo Penta | Official Product Type: Oil Trap / Crankcase Ventilation Separator
System: Crankcase Ventilation (PCV) System
Estimated Weight: 0.5 kg
The genuine Volvo Penta OEM oil trap for crankcase ventilation systems. This component separates oil mist and droplets from crankcase blow-by gases before they are recirculated through the engine’s intake system — keeping the intake clean, reducing oil consumption, and helping the engine meet emissions standards. Confirm fitment by engine serial number and parts diagram before ordering.
Key Features
- Genuine Volvo Penta OEM replacement part
- Separates oil mist from crankcase ventilation gases
- Prevents oil contamination of the intake manifold and throttle body
- Helps reduce oil consumption caused by crankcase blow-by
- Supports proper crankcase pressure regulation
- Direct OEM replacement — no modification required
Compatible Applications
- Volvo Penta marine gasoline and diesel inboard engines equipped with a closed crankcase ventilation (PCV) system
- Confirm compatibility using your engine serial number and the Volvo Penta parts diagram for your specific engine family
- Part fitment can vary by model year, engine family, and serial number break — always verify before ordering
System & Diagram Position
The oil trap is located in the crankcase ventilation circuit, typically between the crankcase breather outlet and the intake air system. On Volvo Penta parts diagrams it appears in the engine ventilation or emissions group. Refer to your engine’s parts diagram to confirm the exact position and confirm this is the correct part number for your serial number range.
Service Interval
Inspect the oil trap during scheduled engine maintenance. Replace when the separator shows signs of oil saturation, cracking, blockage, or when crankcase pressure symptoms appear (oil leaks from seals, excessive blow-by, or oil in the intake). Volvo Penta does not publish a fixed replacement interval for this component — condition-based replacement is standard practice.
Parts Desk Insights
Best Use Case: This part is most commonly needed during engine overhauls, when diagnosing excessive oil consumption, or when crankcase pressure is causing oil to push past seals or into the intake. At $854, it’s a higher-value OEM assembly — worth confirming the part number against the engine serial number and diagram before ordering, as Volvo Penta uses different oil trap assemblies across engine families.
Common Questions: Customers sometimes ask whether a clogged or failed oil trap can cause other problems — yes, a blocked oil trap can cause elevated crankcase pressure, which leads to oil leaks at gaskets and seals, oil in the air intake, and rough running. If you’re seeing unexplained oil consumption or oily residue in the intake, the oil trap is a logical place to start.
Technical FAQ
Q: What does an oil trap do?
A: It separates oil droplets and mist from crankcase blow-by gases before those gases are recirculated into the engine’s intake. This keeps the intake system clean and prevents oil from being burned through the combustion chamber unnecessarily.
Q: How do I know if my oil trap needs replacing?
A: Common symptoms include increased oil consumption, oily residue in the intake manifold or throttle body, oil leaks from crankcase seals, or a strong smell of burning oil. A blocked oil trap can also cause elevated crankcase pressure.
Q: Is this part specific to one engine model?
A: Volvo Penta uses different oil trap assemblies across engine families. Always confirm using your engine serial number and the parts diagram for your specific engine before ordering.
Related Parts
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
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