Bearing Shell Kit – Fits Volvo Penta D1-30A, D1-30B, D1-30F Diesel Engines (21252967, 3812413)
Bearing Shell Kit – Fits Volvo Penta D1-30A, D1-30B, D1-30F Diesel Engines (21252967, 3812413) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Product Details
This aftermarket Bearing Shell Kit is designed for Volvo Penta D1-30A, D1-30B, and D1-30F diesel engines, covering models from 2003 to the present. It provides a reliable solution for engine rebuilds and repairs, manufactured to meet or exceed OEM performance standards.
It serves as a direct replacement for Volvo Penta part numbers 21252967 and the superseded 3812413.
- Installs as an internal engine component.
- Designed for use in diesel fuel systems.
- Supplied as a complete assembly for connecting rod applications.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Superseded By | Notes |
|---|---|---|---|
| Volvo Penta | 3812413 | 21252967 | Original superseded part. |
| Volvo Penta | 21252967 | Current replacement part. |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This part is verified compatible with the following Volvo Penta D1 series diesel engines.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Volvo Penta | D1-30A | 27.9 (20.5kW) | 4-Stroke | 2003–present | 21252967 / 3812413 | 3812413 superseded by 21252967 |
| Volvo Penta | D1-30B | 27.9 (20.5kW) | 4-Stroke | 2003–present | 21252967 / 3812413 | 3812413 superseded by 21252967 |
| Volvo Penta | D1-30F | 27.9 (20.5kW) | 4-Stroke | 2003–present | 21252967 / 3812413 | 3812413 superseded by 21252967 |
Technical Specs
- Product Type
- Connecting Rod Bearing Kit
- Installation
- Internal Engine Component
- Fuel Type
- Diesel
- Product Dimensions
- 7.0 x 6.5 x 6.5
What’s in the Box
- 1x Bearing Shell Kit (Complete Assembly)
Installation Notes
- Ensure the engine is turned off, cooled down, and disconnected from the power source.
- Drain the engine oil completely to avoid spillage.
- Access the engine's bottom end by removing the oil pan.
- Identify the connecting rod cap for the cylinder requiring the new bearing.
- Carefully unbolt and remove the connecting rod cap.
- Remove the old upper and lower bearing shells from the rod and cap.
- Clean the connecting rod and cap surfaces thoroughly to remove old oil and debris.
- Apply assembly lube to the new bearing shells.
- Install the new bearing shells into the connecting rod and cap, ensuring they are seated correctly.
- Re-install the connecting rod cap and torque the bolts to the manufacturer's specified values.
- Re-install the oil pan with a new gasket.
- Refill the engine with the correct type and amount of oil.
Troubleshooting & FAQ
What are the symptoms of a failing connecting rod bearing?
Common signs include a persistent knocking or tapping sound from the engine (rod knock), low oil pressure, and the presence of metallic particles in the engine oil during a change.
Is this a standard size or oversized bearing kit?
This is a standard-size replacement bearing shell kit. It is not designed for crankshafts that have been machined undersize. Always measure clearances to ensure proper fit.
Do I need any special tools for this installation?
Yes, installation requires specific tools, including a calibrated torque wrench to correctly tighten the connecting rod bolts to OEM specifications. Plastigauge is also recommended to verify oil clearances.
How often should connecting rod bearings be replaced?
There is no fixed replacement interval; they are typically replaced during a complete engine rebuild or when symptoms of wear or failure, like rod knock, become apparent.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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