Big-End Bearing Kit – Fits Volvo Penta 5.7L (Replaces 20856959)
Big-End Bearing Kit – Fits Volvo Penta 5.7L (Replaces 20856959) 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 is a replacement Big-End Bearing Kit designed for a wide range of Volvo Penta 5.7L gasoline engines, including 5.7Gi, 5.7GXi, 5.7OSi, and 5.7OSXi models across various series and years. It ensures reliable performance for engine crankshaft maintenance and rebuilds.
This kit serves as a direct replacement for Volvo Penta part number 20856959.
- Installs on the engine crankshaft.
- Engineered for gasoline fuel types.
- This is a genuine OEM Volvo Penta part.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 20856959 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This part is compatible with the following Volvo Penta engine models.
| Brand | Model | Stroke | OEM Part No. |
|---|---|---|---|
| Volvo Penta | 5.7Gi-J, 5.7Gi-N | 4-Stroke | 20856959 |
| Volvo Penta | 5.7OSi-J | 4-Stroke | 20856959 |
| Volvo Penta | 5.7GXi-J, 5.7GXi-N | 4-Stroke | 20856959 |
| Volvo Penta | 5.7OSXi-J | 4-Stroke | 20856959 |
| Volvo Penta | 5.7Gi-CF, 5.7Gi-DF | 4-Stroke | 20856959 |
| Volvo Penta | 5.7OSi-BF, 5.7OSi-CF | 4-Stroke | 20856959 |
| Volvo Penta | 5.7Gi-FF, 5.7Gi-GF | 4-Stroke | 20856959 |
| Volvo Penta | 5.7OSI-EF, 5.7OSI-GF | 4-Stroke | 20856959 |
| Volvo Penta | 5.7Gi-JF | 4-Stroke | 20856959 |
| Volvo Penta | 5.7OSi-JF | 4-Stroke | 20856959 |
| Volvo Penta | 5.7GI-300-P, 5.7GI-300-R | 4-Stroke | 20856959 |
| Volvo Penta | 5.7GIE-300-P, 5.7GIE-300-R | 4-Stroke | 20856959 |
| Volvo Penta | 5.7Gi-A | 4-Stroke | 20856959 |
| Volvo Penta | 5.7GXi-A, 5.7GXi-B | 4-Stroke | 20856959 |
| Volvo Penta | 5.7Gi-B, 5.7OSi-A | 4-Stroke | 20856959 |
| Volvo Penta | 5.7GXi-C, 5.7OSXi-A | 4-Stroke | 20856959 |
| Volvo Penta | 5.7Gi-E, 5.7OSi-D | 4-Stroke | 20856959 |
| Volvo Penta | 5.7Gi-EF, 5.7OSi-DF | 4-Stroke | 20856959 |
| Volvo Penta | 5.7GIC-300-J, 5.7GICE-300-J, 5.7GICE-300-M | 4-Stroke | 20856959 |
| Volvo Penta | 5.7GIC-300-JF, 5.7GICE-300-JF, 5.7GICE-300-MF | 4-Stroke | 20856959 |
| Volvo Penta | 5.7GIC-300-P, 5.7GIC-300-R | 4-Stroke | 20856959 |
| Volvo Penta | 5.7GICE-300-P, 5.7GICE-300-R | 4-Stroke | 20856959 |
Technical Specs
- Product Type
- Big-End Bearing Kit
- Installation
- Engine Crankshaft
- Fuel Type
- Gasoline
- Dimensions
- 16.5" L x 8.0" W x 5.0" H
- Other Technical Attributes
- Genuine OEM Volvo Penta part
What’s in the Box
- Big-End Bearing Kit (Single Assembly)
Installation Notes
- Disconnect the battery and ensure the engine is cool.
- Drain the engine oil completely to avoid spills.
- Safely access the engine's crankcase to expose the crankshaft and connecting rods.
- Carefully remove the connecting rod caps to access the old big-end bearings.
- Thoroughly clean the connecting rod and crankshaft journal surfaces.
- Lubricate the new bearings and journals with assembly lube.
- Install the new bearing shells into the connecting rods and caps.
- Reassemble the connecting rod caps and torque the bolts to the manufacturer's specifications.
- Reinstall all other components, refill with fresh engine oil, and reconnect the battery.
Troubleshooting & FAQ
How do I know if my big-end bearings are failing?
Common signs of failing big-end bearings include a persistent, heavy knocking sound from the lower part of the engine that increases with RPM, low oil pressure, and the presence of metallic particles in the engine oil during a change.
Is this kit for a standard or oversized journal?
This kit is a standard-size replacement. Always measure your crankshaft journals before ordering to ensure correct sizing, especially if the engine has been previously rebuilt.
Can I replace just one bearing, or should I replace them all?
It is strongly recommended to replace all big-end bearings at the same time to ensure even wear, proper engine balance, and consistent oil clearances, preventing premature failure of other components.
What is the most common cause of premature bearing failure?
Oil starvation is the leading cause, followed by oil contamination (dirt, fuel, coolant), improper installation (incorrect torque or lubrication), and engine overheating.
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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