VolvoElectrical Parts

3858979 — Crankshaft Position Sensor 864297001 864297T01 For Mercruiser 305-350 Gm V8 5.0L 5.7L 6.2L 1998-2010 Volvo Penta 3858979

This crankshaft position sensor is a critical engine component that monitors the rotational speed and position of the crankshaft. It sends vital data to the engine control module (ECM) for precise fuel injection and ignition timing. A failing sensor can cause rough idling, stalling, or a no-start condition, often without warning lights initially.

Crankshaft Position Sensor 864297001 864297T01 For Mercruiser 305-350 Gm V8 5.0L 5.7L 6.2L 1998-2010 Volvo Penta 3858979 – Part No 3858979 – Volvo Spare Part
Part Specifications
BrandVolvo
CategoryElectrical Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Disconnect main battery before working on electrical components. Use dielectric grease on all connector pins. Check ground connections — most electrical faults trace to poor grounds. Test with multimeter before installing new parts.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeCrankshaft Position Sensor
MaterialPlastic and metal alloy
ApplicationEngine timing and ignition system
Service LifeReplace as needed based on performance
CompatibilityMercruiser, Volvo Penta specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing crankshaft position sensor may initially cause the engine to run rough or hesitate under load. If left unaddressed, the engine may begin to stall unexpectedly, especially when warm. The worst consequence is a complete no-start condition, leaving the equipment inoperable.

Installation Tip

Ensure the sensor mounting surface on the engine block is clean and free of debris before installation. Avoid using excessive force when tightening the sensor, as this can damage the threads or the sensor itself.

Service Note

Inspect the flywheel or flexplate for damage or debris that could interfere with the sensor's reading when replacing the crankshaft position sensor.