Oil Pressure Sensor/Switch – Fits Volvo Penta V6/V8 Engines (Replaces 3852215)
Oil Pressure Sensor/Switch – Fits Volvo Penta V6/V8 Engines (Replaces 3852215) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Oil Pressure Sensor/Switch – Fits Volvo Penta V6/V8 Engines (Replac...
Product Details
This Oil Pressure Sensor/Switch is an aftermarket replacement designed for a wide range of Volvo Penta gasoline engines from the 1990s to the early 2020s. It provides a crucial low-pressure warning signal and fits popular 3.0L, 4.3L, 5.0L, 5.7L, and 8.1L V6/V8 models.
It serves as a direct cross-reference for Volvo Penta part number 3852215 (which supersedes 3841607) and interchanges with Sierra 18-5899.
- Functions as a low-pressure alarm switch for engine protection.
- Engineered for direct, hassle-free installation.
- Features a durable metal housing with a stud-type electrical connection.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Superseded By | Notes |
|---|---|---|---|
| Volvo Penta | 3841607 | 3852215 | Original OEM part number. |
| Volvo Penta | 3852215 | Current OEM reference number. | |
| Sierra | 18-5899 | Aftermarket interchange. |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This sensor is confirmed to fit the following Volvo Penta engine models. Please verify your specific engine and year range.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. |
|---|---|---|---|---|---|
| Volvo Penta | 3.0L | Various | 4-Stroke | 1990s–early 2020s | 3852215 |
| Volvo Penta | 4.3L V6 | Various | 4-Stroke | 1990s–early 2020s | 3852215 |
| Volvo Penta | 5.0L V8 | Various | 4-Stroke | 1990s–early 2020s | 3852215 |
| Volvo Penta | 5.7L V8 | Various | 4-Stroke | 1990s–early 2020s | 3852215 |
| Volvo Penta | 8.1L V8 | Various | 4-Stroke | 1990s–early 2020s | 3852215 |
Technical Specs
- Product Type
- Oil Pressure Sensor/Switch
- Installation
- Direct replacement
- Fuel Type
- Gasoline
- Connection
- Electrical terminal with stud connection
- Housing Material
- Metal
- Housing Color
- Silver/metallic
- Fitting Type
- Threaded
- Function
- Alarm switch for low oil pressure
What’s in the Box
- 1 × Oil Pressure Sensor Switch (Replaces 3852215)
Installation Notes
- Disconnect the boat's battery.
- Locate the old oil pressure sensor on the engine block.
- Disconnect the wire from the sensor terminal.
- Using an appropriate wrench, carefully unscrew and remove the old sensor. Have a rag ready to catch any minor oil drips.
- Clean the threads on the engine block mounting port.
- Apply a suitable thread sealant to the new sensor's threads to prevent leaks.
- Screw the new sensor into the port by hand, then tighten securely with a wrench. Do not overtighten.
- Reconnect the wire to the new sensor terminal.
- Reconnect the battery.
- Start the engine and check for any oil leaks around the new sensor.
Troubleshooting & FAQ
How do I know if my oil pressure sensor is failing?
Common signs include an oil pressure warning light that is always on, flickers intermittently, or provides an incorrect reading (e.g., zero or maxed out) on the gauge.
Will this fit my specific Volvo Penta 5.0GXi engine?
This sensor fits most V6/V8 gasoline engines from the 1990s to early 2020s, including 5.0L models. However, always verify your engine's specific part number against the references in our Part Number Matrix to ensure a perfect match.
Is this a sender for a gauge or a switch for a warning light?
This is an oil pressure warning switch. Its job is to trigger an alarm (like a dashboard light or buzzer) when the engine's oil pressure drops below a safe minimum threshold. It does not provide a variable pressure reading to a gauge.
What is the recommended replacement interval?
There is no fixed replacement interval for oil pressure sensors. They are typically replaced only when they fail or during a major engine overhaul as a preventative measure.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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