21841181 Sensor | Genuine Volvo Penta Part

🔧 Product Description

Manifold absolute pressure sensor for selected Volvo Penta V8 petrol engines. It measures intake-manifold pressure so the engine control module can calculate load, fuelling and ignition requirements.

🚤 Compatibility

Typically suits:

• Volvo Penta V8-380-CE-A
• Volvo Penta V8-380-C-B
• Volvo Penta V8-380-CE-B
• Volvo Penta V8-380-C-D
• Volvo Penta V8-380-CE-D
• Volvo Penta V8-430-CE-D
• Volvo Penta V8-350-C-D
• Volvo Penta V8-350-CE-D
• Volvo Penta V8-380-C-A

• Engine Family: V
• HP Range: 350-430 HP

⚙️ Key Features

• MAP/manifold-pressure measurement
• Factory ECM calibration
• Electronic engine-control input
• Used on V8-350, V8-380 and V8-430 packages
• Supports fuelling and ignition control
• Engine type: Electronic fuel-injected V8 petrol marine engine

🔌 Function

Measures intake-manifold absolute pressure and sends the signal to the ECM for load calculation, fuel delivery and ignition timing.

⚠️ Common Signs of Failure

• Poor acceleration or reduced power
• Rich or lean running
• MAP sensor circuit or plausibility fault
• Excess fuel consumption or black exhaust smoke

🛠️ Service Notes

• Note how the sensor sits and how its lead is routed before removing it, and support the harness so refitting does not leave the cable strained or rubbing
• Turn the sensor with a spanner on its hex only — never lever or twist it by the connector body or the wiring, which breaks the internal joint even when the sensor looks undamaged
• Renew the O-ring or sealing washer where one is fitted, and do not add thread sealant unless the manual for your engine specifies it; sealant on the threads can break the earth path of a sensor that earths through its body
• Tighten to the figure in the workshop manual for your engine — overtightening distorts the housing and shifts or destroys the sensing element
• Make sure the connector is clean, dry and fully latched home and check the pins for corrosion and spread — a poor connector accounts for a great many faults blamed on the sensor — then run the engine and confirm the reading or warning lamp behaves sensibly before returning the boat to service

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging