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Oil Pressure Sensor Double Station – Fits Volvo Penta Diesel Engines (Replaces 866836)

Sale price $164.90 Regular price $263.00
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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).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Delivery and Shipping

Free standard shipping on all orders under 1 KG

If you have any questions, feel free to email us at info@sierramarines.com, and we’ll get back to you within 20–36 hours.

Product Details

This aftermarket Oil Pressure Sensor Double Station is designed for use in double steering positions on various Volvo Penta diesel engines, including the AD, TAMD, KAD, and KAMD series. It is engineered to operate reliably within a 0-10 bar pressure range, ensuring accurate readings for your marine engine's critical systems.

This sensor serves as a direct replacement for Volvo Penta part number 866836.

  • Installation Method: Screw-in
  • Connection Type: Double Station
  • Operating Pressure: 0-10 bar

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand Part Number
Volvo Penta 866836

Engine & Model Compatibility

Confirm your engine model/year in the table below.

For Volvo Penta Engines: This part is compatible with a wide range of models. Please verify your specific model against this list.

Brand Model Stroke OEM Part No.
Volvo Penta AD31L-A 4-Stroke 866836
Volvo Penta AD31P-A 4-Stroke 866836
Volvo Penta AD31XD 4-Stroke 866836
Volvo Penta AD41D 4-Stroke 866836
Volvo Penta AD41L-A 4-Stroke 866836
Volvo Penta AD41P-A 4-Stroke 866836
Volvo Penta D12C-A MP 4-Stroke 866836
Volvo Penta D12D-A MH 4-Stroke 866836
Volvo Penta D25A-MS/MS AUX/MT/MT AUX 4-Stroke 866836
Volvo Penta D30A-MS/MS AUX/MT/MT AUX 4-Stroke 866836
Volvo Penta D34A-MS/MS AUX/MT/MT AUX 4-Stroke 866836
Volvo Penta D41D 4-Stroke 866836
Volvo Penta D41L-A 4-Stroke 866836
Volvo Penta D49A-MS/MS AUX/MT/MT AUX 4-Stroke 866836
Volvo Penta D65A-MS/MS AUX/MT/MT AUX 4-Stroke 866836
Volvo Penta KAD300-A 4-Stroke 866836
Volvo Penta KAD32P-A 4-Stroke 866836
Volvo Penta KAD42B 4-Stroke 866836
Volvo Penta KAD42P-A 4-Stroke 866836
Volvo Penta KAD43P-A 4-Stroke 866836
Volvo Penta KAD44P-B/C 4-Stroke 866836
Volvo Penta KAMD300-A 4-Stroke 866836
Volvo Penta KAMD42B 4-Stroke 866836
Volvo Penta KAMD42P-A 4-Stroke 866836
Volvo Penta KAMD43P-A/B 4-Stroke 866836
Volvo Penta KAMD44P-A/B/C 4-Stroke 866836
Volvo Penta TAMD121C/D 4-Stroke 866836
Volvo Penta TAMD122A/C/D 4-Stroke 866836
Volvo Penta TAMD122P-A/B/C 4-Stroke 866836
Volvo Penta TAMD162A/B/C/C-B/C-C 4-Stroke 866836
Volvo Penta TAMD163A-A/P-A 4-Stroke 866836
Volvo Penta TAMD165A-A/C-A/P-A 4-Stroke 866836
Volvo Penta TAMD31D/L-A/M-A/P-A/S-A 4-Stroke 866836
Volvo Penta TAMD41D/H-A/H-B/L-A/P-A 4-Stroke 866836
Volvo Penta TAMD42WJ-A 4-Stroke 866836
Volvo Penta TAMD63L-A/P-A 4-Stroke 866836
Volvo Penta TAMD72P-A 4-Stroke 866836
Volvo Penta TAMD73P-A/WJ-A 4-Stroke 866836
Volvo Penta TAMD74A AUX/C-A/C-B/L-A/L-B/P-A/P-B 4-Stroke 866836
Volvo Penta TAMD75P-A 4-Stroke 866836
Volvo Penta TMD121C 4-Stroke 866836
Volvo Penta TMD122A 4-Stroke 866836
Volvo Penta TMD31D/L-A 4-Stroke 866836
Volvo Penta TMD41D/L-A 4-Stroke 866836

Technical Specs

Product Type
Oil Pressure Sensor
Installation
Screw-in
Fuel Type
Diesel
Connection
Double Station
Working Pressure
0-10 bar
Other Technical Attributes
For double steering positions
Product Dimensions
7.0" L x 7.0" W x 7.5" H

What’s in the Box

  • 1 x Oil Pressure Sensor Double Station (866836)

Installation Notes

  1. Ensure the engine is off and cool, and disconnect the battery terminals for safety.
  2. Locate the existing oil pressure sensor on the engine block. Place a rag or container underneath to catch any residual oil.
  3. Carefully detach the electrical wire connector from the sensor.
  4. Using a correctly sized wrench, turn the sensor counter-clockwise to loosen and remove it.
  5. Clean the threaded port on the engine block to ensure a clean sealing surface.
  6. Screw the new sensor into place by hand to avoid cross-threading.
  7. Tighten the sensor with a wrench to the manufacturer’s recommended torque specification. Do not overtighten.
  8. Reattach the electrical connector securely.
  9. Reconnect the battery terminals, start the engine, and carefully check for any oil leaks around the new sensor.
  10. Verify that the oil pressure gauge at each helm station is providing a stable and correct reading.

Troubleshooting & FAQ

How do I know if my oil pressure sensor is failing?

Common signs include an oil pressure gauge reading that is stuck at zero, maxed out, or fluctuates erratically. You may also see the oil pressure warning light illuminate on your dash. An incorrect reading can prevent you from identifying a real oil pressure problem, so timely replacement is critical.

Is this sensor for single or dual helm stations?

This is a double station (dual helm) sensor. It is specifically designed for boats with two steering positions, allowing the oil pressure to be accurately read at both helms from a single sending unit.

What is the operating pressure range of this sensor?

This sensor operates within a 0-10 bar pressure range, which is the standard for many Volvo Penta diesel engine applications.

Does this replace the OEM part exactly?

Yes, this is a direct aftermarket replacement for Volvo Penta OEM part number 866836. It is engineered to meet or exceed original specifications for fit, electrical connection, pressure reading, and function.

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.

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