Temperature Sensor – Fits Volvo Penta D1 D2 D30 D31 D32 D40 D41 D42 MD2010 MD2020 MD2040 (Replaces 827151)

Product Details

This Temperature Sensor is designed for Volvo Penta marine diesel engines including D1, D2, D30, D31, D32, D40, D41, D42, and MD series models (MD2010, MD2020, MD2040). Engineered to monitor engine coolant temperature and transmit accurate readings to your instrument panel, ensuring optimal engine performance and preventing overheating.

Direct aftermarket replacement for Volvo Penta OEM part number 827151.

• Threaded sender design for secure installation in engine block or coolant housing
• Compatible with freshwater and saltwater marine applications
• Includes single temperature sender unit ready for installation

Part Number Matrix

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

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Technical Specs

Part Type

Temperature Sender / Sensor

Application

Marine diesel engines

Replaces OEM

Volvo Penta 827151

Fitment

Threaded installation

What's in the Box

• 1 × Temperature Sender

Installation Notes

1. Allow the engine to cool completely before beginning work to prevent burns and pressure release.
2. Disconnect the battery negative terminal to isolate electrical systems.
3. Locate the existing temperature sender on the engine block or coolant housing and disconnect the wire terminal.
4. Use an appropriately sized wrench or socket to carefully unthread the old sender.
5. Clean the threads in the mounting hole and inspect for damage or corrosion.
6. Apply a small amount of thread sealant (compatible with coolant) to the new sender threads if required by your engine manual.
7. Hand-thread the new sensor into the mounting location, then tighten to manufacturer-specified torque.
8. Reconnect the wire terminal securely to the sender post.
9. Reconnect the battery, start the engine, and verify the temperature gauge responds correctly.
10. Check for coolant leaks around the sensor and retighten if necessary.

Troubleshooting & FAQ

How do I know if my temperature sender has failed?

Common symptoms include an erratic or non-responsive temperature gauge, constant maximum or minimum readings, or an overheating warning light that doesn't correspond to actual engine temperature. Test by checking gauge operation with a known-good sender or by measuring resistance across the sender terminals.

Will this sensor work with my existing gauge?

Yes, this sender is designed to match the resistance profile and signal output of the original Volvo Penta part 827151. It is compatible with factory-installed gauges on the listed engine models.

What torque specification should I use when installing?

Consult your Volvo Penta service manual for the exact torque value for your engine model. Typical values range from 15–25 ft-lbs, but always follow manufacturer guidelines to avoid thread damage or coolant leaks.

Can I use thread sealant or Teflon tape on the threads?

Check your engine's service documentation. Some installations require a sealant compatible with coolant, while others rely on a tapered thread or built-in seal. Avoid over-application, which can contaminate the coolant system.

How often should I replace the temperature sender?

Replace the sender if you notice gauge irregularities, during major engine overhauls, or if corrosion compromises the electrical connection. There is no fixed interval, but inspection during routine maintenance is recommended.

What's the difference between OEM and aftermarket senders?

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.

What are your shipping options and costs?

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

What warranty and return options do you offer?

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 against 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.