Volvo Penta Trim Sensor 21484383 SX-A / DPS Sterndrive

Volvo Penta 21484383 is a genuine OEM trim sensor used in select Volvo Penta sterndrive and transom-system applications. Current parts references place this part in a wiring harness schematic, and stronger application listings identify it specifically as a trim sensor for Volvo Penta TSK-A and TSK SX-A systems. Broader dealer references also describe it as the trim sender or trim sending unit used on certain SX-A and DPS drives.

Key Features

• Genuine Volvo Penta OEM part number 21484383
• Identified in current Volvo Penta references as a sensor, with schematic object key 27 in a wiring harness diagram
• Strongest current application detail identifies it as a trim sensor
• Current public fitment references connect it to TSK-A and TSK SX-A applications, with broader seller references also listing SX-A, DPS-A, and DPS-B
• Dealer weight references range from about 0.110 kg to 0.30 lb, depending on listing format

Engine Compatibility

The strongest supportable fitment for 21484383 is by drive and trim-system application rather than by engine long-block alone. Current OEM-style references tie it to TSK-A and TSK SX-A, while broader seller references also associate it with SX-A, DPS-A, and DPS-B trim-sender applications. Because trim sensors can vary by transom assembly, drive generation, and wiring layout, the safest fitment path is to match this sensor to the exact Volvo Penta drive or transom schematic and serial-number-based application before ordering.

Serial Number Fitment Notice

Match Volvo Penta part number 21484383 to your drive serial number and the correct Volvo Penta trim or wiring diagram before ordering. Trim sensors can share similar housings while serving different calibration or mounting positions, so exact application matters more than appearance alone.

When This Part Needs Replacement

This sensor should be replaced when trim indication becomes inaccurate, trim calibration cannot be maintained, the sender is physically damaged, or corrosion and wiring issues affect reliable trim-signal output. It is also worth checking anytime the gimbal ring, pivot housing, or related trim-harness components are already apart. This service guidance is a practical inference based on the part being identified as a trim sensor in drive-side trim-system applications.

Installation Notes

Confirm the exact application before installation, and compare the removed sensor carefully against the replacement part, especially the connector style, harness routing, and bracket position. Current aftermarket cross-reference references also describe this as a 3-wire style sensor, which is a useful checkpoint when matching the original part during service.

Alternate/Superseded Part Numbers

Current cross-reference sources associate 21484383 with earlier or related reference 3841840 in trim sender applications. That makes 3841840 the main related comparison number to check when verifying older catalogs or existing hardware.

Parts Desk Insight

With trim sensors like this, the easy mistake is matching only by connector shape. Checking the exact drive family and trim-system diagram first usually saves time, especially when SX-A and DPS applications can use similar-looking sender hardware in different positions.

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