Volvo Penta AQ Power Trim Relay 5-Terminal 3857533
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Volvo Penta 3857533 is a genuine OEM relay used in select Volvo Penta trim and electrical-system applications. Current parts sources consistently identify it as a relay, and the strongest application detail available describes it specifically as a power trim relay for older Volvo Penta sterndrive lifting systems.
Key Features
- Genuine Volvo Penta OEM part number 3857533.
- Current detailed listings describe it as a power trim relay.
- Built with 5 connection terminals.
- Current application notes describe it as a relay without a mounting tab.
- Dealer weight references are about 0.09 lb.
Engine Compatibility
The strongest supportable fitment for 3857533 is by drive and trim-system application rather than by engine long-block. Current parts references tie it to the mechanical lifting device on Volvo Penta AQ270, AQ275, and AQ280 model stern drives, which makes this a drive-side trim relay rather than a general-purpose engine relay. Because older Volvo Penta electrical components can look similar across multiple harnesses and relay functions, the safest fitment path is to match this relay to the exact trim-system diagram and serial-number-based application before ordering.
Serial Number Fitment Notice
Match Volvo Penta part number 3857533 to your drive serial number and the correct Volvo Penta trim or electrical diagram before ordering. Small relays can share similar housings and terminal layouts while serving different functions, so exact application matters more than appearance alone.
When This Part Needs Replacement
This relay should be replaced when the trim system becomes intermittent, fails to switch correctly, shows heat damage or terminal corrosion, or is confirmed faulty during electrical diagnosis. It is also worth checking anytime related trim wiring, lifting-device controls, or relay connections are already apart. This service guidance is a practical inference based on the part being identified as the power trim relay in the lifting-system circuit.
Installation Notes
Confirm the exact application before installation, and compare the removed relay carefully against the replacement part, especially the terminal count and mounting-tab style. Since current sources describe this relay as a 5-terminal unit without a mounting tab, those details are useful checkpoints when matching the old part to the new one.
Alternate/Superseded Part Numbers
Current cross-reference sources associate 3857533 with related reference numbers including R473, 18-5705, 586224, and 300-01561. One current application-specific listing also shows 3850403 as a replaced Volvo Penta number for this trim-relay application. These are useful comparison numbers when checking the exact setup.
Parts Desk Insight
With older trim relays like this, the easy mistake is matching only by connector pattern. Checking whether the relay is for the trim circuit, whether it has five terminals, and whether it uses the no-tab housing usually saves time before you order the wrong relay for an older AQ drive setup.
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Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
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If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
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Important:
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