Oil Pressure Sensor/Switch – Fits Volvo Penta V6/V8 Engines (Replaces 3852215)

Oil Pressure Sensor/Switch – Fits Volvo Penta V6/V8 Engines (Replaces 3852215)

This oil pressure sensor/switch is designed for a wide range of Volvo Penta V6 and V8 gasoline engines, covering models from the 1990s through the early 2020s. It serves as a critical component for monitoring engine health by triggering a low-pressure alarm.

Engineered as a direct replacement for Volvo Penta part numbers 3841607 and 3852215, as well as Sierra part 18-5899, ensuring a precise fit and reliable function.

• Installation: Direct replacement for a straightforward installation.
• Function: Acts as an alarm switch to alert for low oil pressure conditions.
• Compatibility: Fits gasoline-fueled Volvo Penta 3.0L, 4.3L, 5.0L, 5.7L, and 8.1L engines.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

• 1 × Oil Pressure Sensor Switch (3852215)

Installation Guide

1. Safety First: Disconnect the boat's battery to prevent electrical shorts.
2. Locate the Sensor: Find the existing oil pressure sensor on the engine block. It's typically near the oil filter.
3. Disconnect: Carefully detach the electrical wire from the terminal stud on the old sensor.
4. Remove Old Sensor: Using an appropriate wrench, unscrew and remove the old sensor from the engine. Have a rag ready to catch any minor oil drips.
5. Prepare New Sensor: If not already applied, add a small amount of thread sealant to the threads of the new sensor to ensure a leak-proof seal.
6. Install New Sensor: Screw the new sensor into place by hand, then tighten it firmly with a wrench. Do not overtighten.
7. Reconnect: Attach the electrical wire to the terminal stud on the new sensor.
8. Final Check: Reconnect the battery. Start the engine and carefully check for any oil leaks around the new sensor.

Troubleshooting & FAQ

Q: How can I confirm this sensor fits my Volvo Penta engine?

A: First, check the "Compatible Engine Models" table to see if your engine model and year range are listed. This part is designed for Volvo Penta V6/V8 engines like the 3.0L, 4.3L, 5.0L, 5.7L, and 8.1L. Second, verify that your original part number matches one of the numbers in our "Part Number Cross-Reference" table, such as 3852215.

Q: What is the main function of this part?

A: This is an alarm switch for low oil pressure. Its job is to detect when the engine's oil pressure falls below a safe level and send a signal to activate the warning light or alarm on your dashboard, helping you prevent engine damage.

Q: What are the signs that my current oil pressure switch is failing?

A: Common failure symptoms include a constantly lit oil pressure warning light, a warning light that flickers, or an oil pressure gauge that provides erratic or incorrect readings. A failed switch might also fail to trigger the alarm during an actual low-pressure event.

Q: Is this an OEM part?

A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?

A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?

A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.