Marine Timing Belt for Volvo Penta 230A, 250, 251, AQ131A–D, AQ145B and AQ151A–C – Replaces 463377
Marine Timing Belt for Volvo Penta 230A, 250, 251, AQ131A–D, AQ145B and AQ151A–C – Replaces 463377 is backordered and will ship as soon as it is back in stock.
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Marine Timing Belt for Volvo Penta 230A, 250, 251, AQ131A–D, AQ145B...
Marine Timing Belt for Volvo Penta 230A, 250, 251, AQ131A–D, AQ145B and AQ151A–C – Replaces 463377 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket marine timing belt is intended for specified Volvo Penta sterndrive and marine engine applications. It replaces Volvo Penta part number 463377 and is listed as aftermarket reference 18-4029. The belt is supplied as a single replacement component for the engine timing drive.
Use the exact engine model and belt reference to confirm compatibility before ordering. Model families, suffixes and engine configurations can vary, so do not rely on the engine horsepower or general brand name alone.
- Product type: Timing belt
- Application: Volvo Penta internal engine timing system
- Replacement reference: Volvo Penta 463377
- Aftermarket reference: 18-4029
- Quantity: 1 belt
Part Number References
The following references are associated with this replacement belt. Part-number matching should be combined with the engine-model fitment listed below.
| Reference Type | Part Number |
|---|---|
| Volvo Penta replacement reference | 463377 |
| Aftermarket reference | 18-4029 |
Engine & Model Compatibility
This belt is listed for the following Volvo Penta applications. This listing does not specify model years, serial-number ranges or shaft conditions; verify the model designation and existing belt reference before installation.
| Brand | Model | Application | Replacement Reference |
|---|---|---|---|
| Volvo Penta | AQ131A | Marine timing belt | 463377 |
| Volvo Penta | AQ131B | Marine timing belt | 463377 |
| Volvo Penta | AQ131C | Marine timing belt | 463377 |
| Volvo Penta | AQ131D | Marine timing belt | 463377 |
| Volvo Penta | AQ145B | Marine timing belt | 463377 |
| Volvo Penta | AQ151A | Marine timing belt | 463377 |
| Volvo Penta | AQ151B | Marine timing belt | 463377 |
| Volvo Penta | AQ151C | Marine timing belt | 463377 |
| Volvo Penta | 230A | Marine timing belt | 463377 |
| Volvo Penta | 250 | Marine timing belt | 463377 |
| Volvo Penta | 251 | Marine timing belt | 463377 |
Technical Specifications
- Product Type
- Timing belt
- Application
- Volvo Penta marine engine timing drive
- Brand Application
- Volvo Penta Stern / Out Drive
- Replacement Reference
- 463377
- Aftermarket Reference
- 18-4029
- Quantity
- 1 belt
What’s in the Box
- 1 × aftermarket timing belt
No tensioner, pulley, mounting hardware or additional belt components are included with this single-belt listing.
Installation Notes
- Disconnect the battery and allow the engine to cool completely.
- Remove the necessary covers and accessory components to access the timing drive.
- Set the crankshaft and camshaft to the timing positions specified in the engine service manual.
- Release the belt tensioner and remove the old belt without disturbing the timing positions.
- Install the replacement belt so that it is correctly engaged with every timing sprocket.
- Set belt tension according to the manufacturer’s service procedure.
- Rotate the engine by hand as directed by the service manual and recheck all timing marks.
- Reinstall the covers and removed components before reconnecting the battery.
- Run the engine only after confirming correct timing, belt tracking and tension.
Incorrect timing-belt installation can cause serious engine damage. Professional installation is recommended unless you have the correct service information and experience with this engine.
Troubleshooting & FAQ
Which Volvo Penta engines does this belt fit?
The listed applications are AQ131A, AQ131B, AQ131C, AQ131D, AQ145B, AQ151A, AQ151B, AQ151C, 230A, 250 and 251. Confirm the exact model designation and replacement reference before ordering.
Which part number does this belt replace?
This aftermarket timing belt replaces Volvo Penta reference 463377. The associated aftermarket reference is 18-4029.
Is this a complete timing-belt tensioner kit?
No. This listing is for one timing belt only. It does not include a tensioner pulley, idler, hardware or other timing-drive components.
Can I use the part number alone to confirm fitment?
Part-number matching is helpful, but confirm the exact engine model as well. Model suffixes and engine configurations can affect compatibility.
When should the belt be replaced?
Replacement intervals depend on the engine manufacturer’s service instructions, operating conditions and belt condition. Inspect the belt for cracking, fraying, damage or abnormal wear, and follow the service manual for the correct replacement schedule.
Is this an OEM Volvo Penta belt?
No. This listing is for an aftermarket replacement belt associated with Volvo Penta reference 463377 and aftermarket reference 18-4029.
Safety & Important Information
- Verify the exact engine model and existing belt reference before purchase.
- Do not infer fitment from horsepower, year or brand alone when the model designation does not match the list above.
- Replace the belt if it shows cracks, fraying, missing teeth, contamination or other damage.
- Follow the engine service manual for timing alignment, tension and final checks.
- This is an aftermarket replacement, not an OEM component.
About Sea Sierra
- Marine Parts Support — We provide replacement components for supported marine applications.
- Application-Focused Listings — Product pages identify available part-number and model references to help with ordering.
- Practical Replacement Value — Aftermarket options for routine marine maintenance and repair.
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