VolvoEngine Parts

FPZY2411196 — Knock Sensor Assembly 3854905 For Volvo Penta Stern Drive Engine 4.3L 5.0L 5.7L 4.3Gxi-A 5.7Gii-A

This is a knock sensor assembly that detects engine detonation or 'knocking' and sends a signal to the engine control module (ECM) to adjust ignition timing. It is designed with precise sensitivity to differentiate normal combustion from harmful detonation, unlike a faulty sensor that may provide inaccurate readings. Operators might experience rough idling, reduced engine power, or the illumination of the check engine light if this sensor is malfunctioning.

Knock Sensor Assembly 3854905 For Volvo Penta Stern Drive Engine 4.3L 5.0L 5.7L 4.3Gxi-A 5.7Gii-A – Part No FPZY2411196 – Volvo Spare Part
Part Specifications
BrandVolvo
CategoryEngine 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

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

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

Part TypeKnock Sensor Assembly
MaterialSteel housing, piezoelectric element
ApplicationEngine detonation detection
Service LifeReplace as needed based on diagnostic codes
CompatibilityVolvo Penta specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The initial symptom of a failing knock sensor is often the illumination of the check engine light, accompanied by rough engine idling. If ignored, the engine may experience reduced power and increased fuel consumption as the ECM cannot properly adjust ignition timing. Continued operation risks internal engine damage from uncontrolled detonation.

Installation Tip

Ensure the mounting surface on the engine block is clean and free of any debris before installing the new knock sensor. Do not overtighten the sensor, as this can damage the threads or the sensor housing.

Service Note

When replacing the knock sensor, it is advisable to check the engine's ignition timing and scan for any related diagnostic trouble codes.