21234531 Speedometer | Genuine Volvo Penta Part

🔧 Product Description

A black-face electronic marine speedometer with a 110 mm mounting diameter and a 0-40 knots / approximately 0-45 mph scale. It can receive vessel-speed information from a compatible GPS, NMEA interface or Volvo Penta multisensor system.

🚤 Compatibility

• Engine Family: D
• HP Range: 110-480 HP

Full model list at the end of this description.

⚙️ Key Features

• Black dial face
• 110 mm instrument diameter
• 0-40 knots / approximately 0-45 mph display range
• Direct replacement where part number 21234531 is specified
• Engine type: Volvo Penta marine propulsion instrument system
• 110mm (Volvo assembly listing)
• Gauge diameter: Ø 110 mm
• Gauge family: Speedometers
• Gauge range: EVC gauge range

🔌 Function

Displays calculated vessel speed from the connected electronic speed source.

⚠️ Common Signs of Failure

• Gauge remains at zero
• Erratic speed reading
• Fogging or moisture inside the lens
• Failed backlighting
• Communication or sensor fault

🛠️ Service Notes

• Isolate the battery before disturbing instrument wiring, and note the existing connections as they come off so the gauge goes back the same way
• Check the sender and its plumbing or wiring before condemning the gauge — most dead or wrong readings come from a fouled or damaged sender, a blocked tube, or corroded connections rather than the instrument
• Clean the terminals, make the connections up tight, and refit the sealing boots, grommets and gaskets so the panel stays watertight from both front and back
• Set the instrument up as the instructions for your installation describe, then check the reading against a known reference on the water before calling the job done
• Keep the gauge properly clamped in a sealed aperture; a loose instrument works its own connections apart and lets water in behind the panel

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21234531 → Supersedes 3847864

OEM / Related Numbers

• 3847864 earlier number superseded by this part
• 3807513 and 874917 - related earlier instrument references

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D6-330A-F, D6-370A-F, D6-330D-F, D6-370D-F, D6-300A-F, D6-300D-F, D6-300I-F, D6-340I-G, D6-380I-G, D6-440I-G, D6-480I-G, D6-300A-G, D6-340A-G, D6-380A-G, D6-440I-WJ-G, D6-480I-WJ-G, D6-300D-G, D6-340D-G, D6-380D-G, D6-440D-G, D6-480D-G, D6-400A-G, D6-440A-G, D6-300I-G, D6-330I-F, D6-370I-F, D6-435D-F, D6-400A-F, D6-435I-F
• Volvo Penta D4-260A-F, D4-260D-F, D4-260I-F, D4-300A-F, D4-300D-F, D4-180I-F, D4-225I-F, D4-300I-F, D4-225A-F, D4-175I-G, D4-230I-G, D4-270I-G, D4-320I-G, D4-300I-G, D4-230A-G, D4-270A-G, D4-320A-G, D4-300A-G
• Volvo Penta D13C1-A MP, D13C2-A MP, D13C3-A MP, D13C4-A MP, D13B-E MH, D13B-E MH (FE), D13B-N MH, D13B-N MH (FE), D13C6-A MP, D13C1-A MH, D13C2-A MH, D13C5-A MP
• Volvo Penta D3-110I-H, D3-140A-H, D3-170A-H, D3-200A-H, D3-220A-H, D3-150I-H, D3-170I-H, D3-200I-H, D3-220I-H, D3-140I-H
• Volvo Penta D8A5-A MH, D8A6-A MH, D8A1-A MP, D8A2-A MP, D8A3-A MP, D8A4-A MP
• Volvo Penta D11B3-A MP, D11B4-A MP, D11B2-A MP, D11B1-A MP
• Volvo Penta D9A2L MH, D9A2M MP