21133410 Engine Speed Sensor | Genuine Volvo Penta Part

🔧 Product Description

A second camshaft/flywheel engine-speed sensor variant used on D5/D7 electronic installations. It supersedes 3887179 and is selected according to the sensor position, connector and ECU generation.

🚤 Compatibility

• Engine Family: D
• HP Range: 280-480 HP

Full model list at the end of this description.

⚙️ Key Features

• Current replacement for 3887179
• Precision magnetic pickup
• Sealed connector for engine-environment service
• Supports starting synchronisation and running-speed monitoring
• Must not be swapped between cam and flywheel positions without parts list for your engine confirmation
• Engine type: D5/D7-series inline diesel engine

🔌 Function

Provides the ECU with rotational speed and position pulses required for injection timing, synchronisation and overspeed protection.

⚠️ Common Signs of Failure

• Intermittent or absent speed reading at the instrument panel
• Engine refusing to start although it cranks normally
• Sudden shutdown under load with a synchronisation fault stored
• Unstable idle or surging as the pulse train breaks up
• Cracked sensor body, swollen seal or oil tracking up the lead found on removal

🛠️ Service Notes

• Confirm the sensor position from parts list for your engine before fitting, as the cam and flywheel positions are not interchangeable
• Check the harness branch and connector for damage first, as a broken screen gives the same fault codes
• Sensor 21133409 is the alternative position and generation for D5/D7 installations

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21133410 → Supersedes 3887179

OEM / Related Numbers

• 3887179 earlier number superseded by this part
• 21133409 - companion speed-sensor variant

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D6-280I-D, D6-310I-D, D6-280I-E, D6-310I-E, D6-300I-F, D6-330I-C, D6-370I-C, D6-330I-D, D6-280I-C, D6-310I-C, D6-340I-G, D6-380I-G, D6-440I-G, D6-480I-G, D6-440I-WJ-G, D6-480I-WJ-G, D6-300I-G, D6-330I-F, D6-370I-F, D6-435I-C, D6-435I-D, D6-435I-E, D6-435I-F, D6-370I-D, D6-330I-E, D6-370I-E