Yamaha – Oil Pressure Switch | Engine Monitoring Component | YA9-42995-13-00

Overview

Oil pressure is one of those things you don’t want to guess about—it either works or it costs you an engine. I’ve seen motors saved just because the warning system caught low pressure early. The Yamaha Oil Pressure Switch YA9-42995-13-00 plays a key role in that, sending accurate signals so you know what’s going on inside the engine. It’s a small part, but it gives you peace of mind every time you turn the key.

Key Features

• Accurate Pressure Monitoring – Detects oil pressure levels and triggers alerts when needed.

• Yamaha Factory Calibration – Built to match Yamaha engine specifications for reliable readings.

• Durable Sensor Construction – Designed to handle heat, vibration, and engine conditions.

• Protects Engine Health – Helps prevent damage by warning of low oil pressure conditions.

• Direct Fit Replacement – Installs easily with proper connection to the engine system.

Engine & Boat Compatibility

The Yamaha Oil Pressure Switch YA9-42995-13-00 is designed for Yamaha engines equipped with oil pressure monitoring systems.

It is commonly used across Yamaha marine and recreational engines where maintaining proper oil pressure is critical for engine protection and performance. Always confirm compatibility using your engine model and parts diagram before installation.

FAQ

Q: What are signs of a failing oil pressure switch?
A: False warnings, no warning at all, or inconsistent readings can indicate failure.

Q: Can a bad switch cause engine damage?
A: Indirectly, yes—if it fails to warn you about low oil pressure.

Q: Is this part hard to replace?
A: It’s usually straightforward, but access depends on engine layout.

Q: Should I replace it during routine maintenance?
A: Not typically, but it should be replaced if it shows signs of failure.

Q: Can wiring issues mimic a bad switch?
A: Yes, it’s always good to check connections before replacing the part.

• Supersessions
  YA2-28650-25-03