Connecting Rod Bearing Kit – Fits Volvo Penta Gasoline Marine Engines (Replaces 271051)
Connecting Rod Bearing Kit – Fits Volvo Penta Gasoline Marine Engines (Replaces 271051) 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 Connecting Rod Bearing Kit – Fits Volvo Penta Gasoline Marine Engines (Replaces 271051) is designed for various Volvo Penta gasoline marine engines, including the AQ, BB, and MB series. It is a standard size kit intended for B18 and B20 engines used in marine applications from 1963 to 1985.
This kit serves as a direct replacement for Volvo Penta 271051 and Glyco 271051 part numbers.
- Engineered for standard size fitment on Volvo Penta B18 and B20 engines.
- Constructed from a durable tri-metal alloy for reliable performance.
- Kit includes a full set of bearing shells for a complete installation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 271051 |
| Glyco | 271051 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Volvo Penta Models:
| Model | Stroke | Years | OEM Part No. |
|---|---|---|---|
| AQ105A | 4-Stroke | 1968–1969 | 271051 |
| AQ115A | 4-Stroke | 1969–1970 | 271051 |
| AQ115B | 4-Stroke | 1970–1975 | 271051 |
| AQ130A | 4-Stroke | 1968–1970 | 271051 |
| AQ130B | 4-Stroke | 1968–1970 | 271051 |
| AQ130C | 4-Stroke | 1969–1975 | 271051 |
| AQ130D | 4-Stroke | 1975–1977 | 271051 |
| BB30B | 4-Stroke | 1963–1969 | 271051 |
| BB100 | 4-Stroke | 1963–1968 | 271051 |
| BB115A | 4-Stroke | 1969–1970 | 271051 |
| BB115B | 4-Stroke | 1970–1975 | 271051 |
| BB115C | 4-Stroke | 1975–1977 | 271051 |
| MB20A | 4-Stroke | 1969–1971 | 271051 |
| MB20B | 4-Stroke | 1969–1975 | 271051 |
Technical Specs
- Product Type
- Connecting Rod Bearing Kit
- Size
- Standard
- Bearing Width
- 27 mm
- Housing Material
- Tri-metal alloy
- Housing Color
- Silver
- Compatible Engines
- For B18, B20 engines
- Product Dimensions
- 9.5"L x 10.5"W x 6.5"H
What’s in the Box
- 1 x Connecting Rod Bearing Kit (271051)
Installation Notes
- Disconnect the battery and safely drain the engine oil.
- Access the connecting rods from the bottom end of the engine by removing the oil pan.
- Carefully remove the connecting rod caps one at a time, keeping them in order and noting their orientation.
- Remove the old bearing shells from the rod and cap.
- Thoroughly clean the rod, cap, and crankshaft surfaces of any oil and debris.
- Place the new bearing shells into the rod and cap, ensuring the locating tangs are correctly seated.
- Apply a generous amount of high-quality engine assembly lube to the bearing surfaces.
- Reinstall the connecting rod caps to the correct orientation and torque the bolts to the manufacturer's specified values.
- Rotate the crankshaft by hand to ensure it moves freely without binding.
- Reassemble all remaining components, install a new oil filter, and refill the engine with fresh oil.
Troubleshooting & FAQ
How do I know if these bearings are the correct size for my engine?
This is a standard size (STD) bearing kit. If your engine's crankshaft has been previously machined or reground, you may require oversized bearings. Always consult your engine's service manual or a professional mechanic to confirm the required size.
What are the common signs of a failing connecting rod bearing?
Symptoms of a worn or failing connecting rod bearing include a repetitive knocking or tapping sound from the engine (often called "rod knock") that may increase with RPM, low oil pressure readings, and the presence of metallic shavings in the engine oil and filter.
Which specific Volvo Penta engines does this kit fit?
This kit is designed for the vintage Volvo Penta B18 and B20 gasoline engines. These were commonly used in marine applications under the AQ, BB, and MB series from the early 1960s to the mid-1980s. Refer to our compatibility table for specific models.
Is special lubrication required during installation?
Yes. It is critical to use a high-quality assembly lube on the bearing surfaces and the crankshaft journal before final assembly. This protects the components during the initial startup before normal oil circulation is established.
Can I replace just one bad bearing?
While technically possible, it is strongly recommended to replace all connecting rod bearings as a complete set. This ensures consistent clearances, proper engine balance, and prevents premature failure of the older bearings.
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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