21292836 Sensor | Genuine Volvo Penta Part

🔧 Product Description

An electronic sensor used to detect water entering the drive-shaft bellows on selected Volvo Penta DPS and FWD sterndrives. Early warning can help prevent corrosion and damage to the universal-joint and drive-shaft assembly. Genuine Volvo Penta sensor listed for gasoline sterndrive engines of the 5.0GXi family (5.0GXi-270-R, 5.0GXi-J/JF, 5.0OSi-J, 5.0GXi-P and GXiC/GiC/GXiCE/GiCE/GXiE variants).

🚤 Compatibility

• Engine Family: V, D, DPI
• HP Range: 150-480 HP

Full model list at the end of this description.

⚙️ Key Features

• Monitors the sterndrive bellows cavity
• Interfaces with the dedicated sensor module and harness
• Designed for DPS and FWD drive families
• Engine type: Volvo Penta sterndrive

🔌 Function

Detects water inside the drive-shaft bellows and sends a warning to the vessel monitoring system.

⚠️ Common Signs of Failure

• Water-in-bellows warning remains active when the cavity is dry
• No warning during a functional test
• Sensor circuit fault
• Corroded connector or terminals
• Water or oil contamination around the sensor
• Damaged mounting O-ring

🛠️ 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

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 21124251 - related wiring
• 21206915 - sensor module
• 21206919 - wiring harness
• 21210873 - mounting bracket
• 3852033 - O-ring

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta V8-350-C-R, V8-350-CE-R, V8-380-C-R, V8-380-CE-R, V8-430-C-R, V8-300-C-M, V8-300-CE-M, V8-350-C-M, V8-350-CE-M, V8-300-C-N, V8-300-CE-N, V8-350-C-N, V8-350-CE-N, V8-380-C-M, V8-380-CE-M, V8-380-CE-A, V8-380-C-B, V8-380-CE-B, V8-380-C-D, V8-380-CE-D, V8-430-CE-D, V8-350-C-D, V8-350-CE-D, V8-380-C-A, V8-380-CE-J, V8-380-C-J, V8-430-CE-J, V8-430-C-J, V8-350-C-H, V8-350-CE-H, V8-350-C-J, V8-350-CE-J, V8-300-C-R, V8-300-CE-R, V8-430-CE-R, V8-430-C-M, V8-430-CE-M, V8-300-C-K, V8-300-CE-K, V8-350-C-K, V8-350-CE-K, V8-380-C-K, V8-380-CE-K, V8-430-C-K, V8-430-CE-K, V8-300-C-P, V8-300-CE-P, V8-350-C-P, V8-350-CE-P, V8-380-C-P, V8-380-CE-P, V8-430-C-P, V8-300-CE-G, V8-300-C-G, V8-300-C-H, V8-300-CE-H, V8-300-C-J, V8-300-CE-J, V8-350-C-G, V8-350-CE-G, V8-380-C-N, V8-380-CE-N, V8-430-C-N, V8-430-CE-N, V8-430-CE-P, V8-300-C-S, V8-300-CE-S, V8-350-C-S, V8-350-CE-S, V8-400-CE-R
• Volvo Penta V6-200-N, V6-200-C-N, V6-200-CE-N, V6-240-M, V6-240-C-M, V6-240-CE-M, V6-280-M, V6-280-C-M, V6-280-CE-M, V6-280-J, V6-280-CE-J, V6-280-G, V6-280-C-G, V6-280-CE-G, V6-280-C-J, V6-240-N, V6-240-C-N, V6-240-CE-N, V6-280-N, V6-280-C-N, V6-240-CE-K, V6-280-CE-K, V6-200-P, V6-200-C-P, V6-200-CE-P, V6-250-P, V6-250-C-P, V6-250-CE-P, V6-280-P, V6-280-C-P, V6-280-CE-P, V6-200-C-G, V6-200-G, V6-200-J, V6-200-C-J, V6-280-CE-N, V6-200-M, V6-200-C-M, V6-250-O, V6-250-C-O, V6-250-CE-O, V6-240-C-G, V6-240-CE-G, V6-240-G, V6-240-J, V6-240-CE-J, V6-240-C-J
• Volvo Penta D6-300A-G, D6-340A-G, D6-380A-G, D6-400A-G, D6-440A-G, D6-480A-G
• Volvo Penta D4-150A-G, D4-230A-G, D4-270A-G, D4-320A-G, D4-300A-G
• Volvo Penta DPI-A