Volvo Penta 24V Electrical System Relay 3171420
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Volvo Penta 3171420 is a genuine OEM 24V relay used in a wide range of Volvo Penta electrical-system applications. Current parts references consistently identify it as an active Volvo Penta relay, with strong schematic support placing it in engine electrical assemblies such as D5A-B TA / Cables and Fuses and broader industrial and marine electrical-system layouts.
Key Features
- Genuine Volvo Penta OEM part number 3171420.
- Identified by current parts sources as a 24V relay.
- Strong schematic application reference places it in D5A-B TA / Cables and Fuses, schematic object key 10.
- Current references also show this relay used in broader electrical system, fuse and relay holder, terminal box, and engine wiring harness applications.
- Dealer weight references are approximately 0.03 kg or 0.06 lb, depending on listing format.
Engine Compatibility
The strongest supportable fitment for 3171420 is by electrical-system application rather than one narrow engine family. Current references connect it to marine and industrial Volvo Penta engines including D3-110I-B, D3-110I-C, D3-130A-A, D3-130I-C, D3-150I-H, D3-170I-H, D3-200I-H, D3-220I-G, D3-220I-H, D4-150A-G, D4-230A-G, D4-260A-A through F, D4-260D-B through F, D4-260I-A through F, D4-270A-G, D4-300A-A through G, D4-300D-A through F, D4-300I-A, D6-330A-D and F, D6-330D-B, C and E, D6-350A-A and B, D6-370A-C and F, D6-370D-A, B and E, D8A2-A MP, D8A3-A MP, D11A-C-MP, D11A-D-MP, D13B-A MP, D13C2-B MP, and many TAD, TAMD, TWD, and MD series applications. Because relay usage varies by harness layout, ECU version, and production break, the safest fitment path is to match this relay to the exact Volvo Penta electrical schematic and serial-number-based application before ordering.
Serial Number Fitment Notice
Match Volvo Penta part number 3171420 to your engine serial number and the correct Volvo Penta electrical-system diagram before ordering. Relays can look similar across different fuse holders, terminal boxes, and engine harness assemblies, so exact schematic match matters more than appearance alone.
When This Part Needs Replacement
This relay should be replaced when it fails to switch properly, causes intermittent electrical operation, shows heat damage or corrosion at the terminals, or is identified as faulty during electrical-system diagnosis. It is also worth checking anytime related fuse-holder, relay-box, or harness components are already apart. This service guidance is a practical inference based on the part's repeated use in Volvo Penta electrical-system assemblies.
Installation Notes
Confirm the exact application in the correct Volvo Penta schematic before installation, and compare the removed relay carefully against the replacement part. Inspect the relay socket, terminals, fuse-holder area, and surrounding harness condition before reassembly. On Volvo Penta electrical systems, exact relay match matters more than a quick visual comparison.
Alternate/Superseded Part Numbers
Current parts references show 3171420 as the active Volvo Penta OEM number. Reviewed sources also show it as the replacement for earlier Volvo Penta numbers 4786690 and 21072016, while one current dealer listing notes 20374662 and 21072016 as superseded references into 3171420. A newer Marine Parts Express listing also shows 24966470 as the updated replacement for 3171420 in that catalog, so serial-number-based schematic confirmation is especially important.
Parts Desk Insight
With relays like this, the easy mistake is matching only by pin style or housing size. Checking the exact Volvo Penta electrical diagram first usually saves a lot of hassle, especially when the same relay family appears across marine, industrial, and generator applications.
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Shipping information
In-stock and OEM parts: ship same or next business day.
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Returns & warranty
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