Volvo Penta D1-30 V-Belt – Replaces 21951188 and 3812159
Volvo Penta D1-30 V-Belt – Replaces 21951188 and 3812159 is backordered and will ship as soon as it is back in stock.
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Volvo Penta D1-30 V-Belt – Replaces 21951188 and 3812159
Volvo Penta D1-30 V-Belt – Replaces 21951188 and 3812159 is backordered and will ship as soon as it is back in stock.
Product Details
This replacement V-belt is designed for Volvo Penta D1-30 marine engines. It is intended for the engine belt drive system and provides reliable power transmission for the alternator and associated engine accessories when correctly matched to the original belt and engine configuration.
The belt is listed as a replacement for Volvo Penta part numbers 21951188 and 3812159.
- Product type: Marine V-belt
- Application: Volvo Penta D1-30
- Installation location: Engine belt drive and alternator assembly
- Design: V-belt profile for pulley engagement
Part Number Matrix
Use the following manufacturer references to compare the replacement belt with your original part.
| Brand | Manufacturer Part Number | Application |
|---|---|---|
| Volvo Penta | 21951188 | Reference replacement number |
| Volvo Penta | 3812159 | Reference replacement number |
Engine Compatibility
The company product record identifies this belt for the Volvo Penta D1-30. Model-year, serial-number, horsepower, shaft, and individual variant conditions are not specified in the available product record, so confirm the original belt reference and engine configuration before ordering.
| Brand | Engine Model | Application | Manufacturer Part Numbers |
|---|---|---|---|
| Volvo Penta | D1-30 | Marine V-belt | 21951188, 3812159 |
Technical Specifications
- Product Type
- Marine V-belt
- Brand Application
- Volvo Penta Stern / Out Drive
- Engine Application
- Volvo Penta D1-30
- Drive Function
- Engine belt drive and alternator system
- Profile
- V-belt
What's in the Box
- 1 × Marine V-belt
Installation Notes
- Switch off the engine and disconnect the battery according to the engine manufacturer's safety procedure.
- Locate the belt on the engine belt drive and alternator assembly.
- Release the belt tension using the appropriate adjustment or pivot hardware for your engine.
- Remove the old belt and note its routing around each pulley.
- Install the replacement belt along the same routing path, ensuring that it is fully seated in every pulley groove.
- Restore the belt tension according to the Volvo Penta service instructions for your specific engine.
- Tighten all adjustment and mounting hardware securely.
- Reconnect the battery, start the engine, and check that the belt runs straight without slipping, fraying, or abnormal noise.
Troubleshooting & FAQ
Which Volvo Penta engines is this belt listed for?
The company product record lists the Volvo Penta D1-30. Because specific years, serial ranges, and variants are not provided, compare the original belt and confirm the manufacturer part number before purchase.
Is this belt a kit?
No. This listing is for one individual marine V-belt.
Which manufacturer part numbers does it replace?
The listed reference numbers are Volvo Penta 21951188 and 3812159.
What are common signs of a worn belt?
Squealing during startup or operation, visible cracking, fraying, glazing, slipping, or charging problems may indicate that the belt requires inspection or replacement. Investigate the pulleys and tension system as well as the belt.
How should I confirm fitment?
Confirm that your engine is a Volvo Penta D1-30 and that your original belt corresponds to 21951188 or 3812159. If the engine model, belt routing, or part number differs, consult the engine service documentation before ordering.
Is this an OEM part?
This listing is for a replacement belt and is not represented as a genuine Volvo Penta OEM component.
Safety & Important Information
- Always work with the engine stopped and secured against accidental starting.
- Use the correct belt tension and routing specified for your engine.
- Do not operate the engine if the belt is misaligned, loose, damaged, or rubbing against another component.
- Professional installation is recommended when the correct routing or tension procedure is uncertain.
About Sea Sierra
- Marine Parts Focus — We supply replacement components for marine applications.
- Part-Number Reference — Manufacturer references are provided to help customers compare the original part before ordering.
- Fitment First — Confirm the engine model and original part number before installation.
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