3843751 Sensor | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta sensor from the Ignition and Control Systems group, weighing 0.095 kg and listed for 5 applications across V series engines. It supersedes part number 3857696, which was catalogued earlier as an idle air control valve. Fits Volvo Penta 4.3L, 5.0L and 5.7L GXi/OSi petrol marine engines (variants B-N, e.g.

🚤 Compatibility

Typically suits:

• Volvo Penta 4.3GXiE-225-R
• Volvo Penta 4.3GXiE-M
• Volvo Penta 4.3GXiE-P
• Volvo Penta 4.3GXiE-Q
• Volvo Penta V6-225-E-A

• Engine Family: V
• HP Range: 225 HP

⚙️ Key Features

• Ignition and Control Systems group
• 0.095 kg
• Supersedes 3857696, catalogued earlier as an idle air control valve
• 5 applications across the V series

🔌 Function

Measures its parameter at the point it is fitted and reports it to the control system, so fuelling and idle control respond to real conditions.

⚠️ Common Signs of Failure

• Erratic or hunting idle
• Fault code stored against the sensor circuit
• Poor starting or stalling when the throttle closes
• Corrosion or damp in the connector
• Reading absent or clearly out of range on a diagnostic check

🛠️ Service Notes

• The number this replaces was catalogued as an idle air control valve, so confirm which component your parts list actually shows before ordering
• Check the loom and connector first, and renew the seal or O-ring when fitting

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3843751 → Supersedes 3857696

OEM / Related Numbers

• 3857696 earlier number superseded by this part

Aftermarket / Verified Equivalents

• Crusader: R084003
• Mercruiser: 803149

📦 Condition

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