21250645 Pressure Switch | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Engine Oil Pressure Switch - Part Number: 21250645

Genuine oil-pressure warning switch used on Volvo Penta D1 and D2 marine diesel engines. It monitors lubricating-oil pressure and signals the alarm or monitoring system if pressure falls below the switch threshold.

⚙️ Key Features

• Genuine Volvo Penta oil-pressure switch

• Replaces earlier references 3808796 and 3847889

• Direct connection to the engine alarm system

• Threaded engine-block installation

• Suitable for compact marine diesel engines

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21250645 → Supersedes 3847889

• 3847889 → Supersedes 3808796

OEM / Related Numbers:

• 21250645

• 3847889

• 3808796

Aftermarket / Verified Equivalents:

• Parts4Engines: Oil Pressure Switch equivalent

• FridayParts: Replacement switch for 21250645

🚤 Compatibility

Confirmed engines:

• D1-13A

• D1-13B

• D1-13F

• D1-20A

• D1-20B

• D1-20F

• D1-30A

• D1-30B

• D1-30F

• D2-40A

• D2-40B

• D2-40F

• D2-50F

• D2-55A

• D2-55B

• D2-55C

• D2-55D

• D2-55E

• D2-55F

• D2-60F

• D2-75A

• D2-75B

• D2-75C

• D2-75F

🔌 Function

The switch closes or opens its electrical circuit in response to engine-oil pressure, allowing the monitoring system to activate a low-oil-pressure warning.

Common signs of failure:

• False low-oil-pressure alarm

• No warning when the engine is stopped

• Intermittent alarm or warning lamp

• Oil leaking through the switch body

• Corroded electrical terminal

• Incorrect switch resistance or continuity

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging