Main Bearing Kit (0.25mm) – Fits Volvo Penta Marine Diesel Engines (876516)
Main Bearing Kit (0.25mm) – Fits Volvo Penta Marine Diesel Engines (876516) is backordered and will ship as soon as it is back in stock.
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Main Bearing Kit (0.25mm) – Fits Volvo Penta Marine Diesel Engines ...
Product Details
This Main Bearing Kit (0.25mm) – Fits Volvo Penta Marine Diesel Engines (876516) is designed for various Volvo Penta diesel engines. It features bearings with a 0.25mm oversized thickness, making it suitable for crankshafts that have been machined during repair or rebuilding processes.
This kit serves as a direct replacement for Volvo Penta part numbers 876516 and 270461/876516.
- Engine Application: Designed specifically for Volvo Penta marine diesel engines.
- Bearing Size: 0.25mm oversized for crankshaft repair applications.
- Installation: Mounts directly onto the engine crankshaft.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 876516 |
| Volvo Penta | 270461/876516 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | OEM Part No. | Notes |
|---|---|---|---|
| Volvo Penta | 30 | 876516 | |
| Volvo Penta | 31 | 876516 | |
| Volvo Penta | 32 | 876516 | Standard size |
| Volvo Penta | 40 | 876516 | |
| Volvo Penta | 41 | 876516 | |
| Volvo Penta | 42 | 876516 | |
| Volvo Penta | 43 | 876516 | |
| Volvo Penta | 44 | 876516 | |
| Volvo Penta | 300 | 876516 | |
| Volvo Penta | AD41D | 876516 | |
| Volvo Penta | D41D | 876516 | |
| Volvo Penta | TAMD41D | 876516 | |
| Volvo Penta | TMD41D | 876516 |
Technical Specs
- Product Type
- Main Bearing Kit
- Installation
- Engine Crankshaft
- Bearing Size
- 0.25mm Oversized
- Application
- Marine Diesel Engines
- Dimensions
- 8.5" x 8.5" x 4.0"
- Weight
- 0.34 lbs (0.15 kg)
- Other Technical Attributes
- U.S=0.25mm (Undersized bearings for crankshaft repair)
What’s in the Box
- 1 x Main Bearing Kit (876516)
Installation Notes
- Ensure the engine is turned off, disconnected from power, and has cooled down. Drain the engine oil.
- Remove the oil pan to gain access to the crankshaft and main bearing caps.
- Carefully unbolt and remove the main bearing caps, making sure to keep them in their original order and orientation.
- Remove the old bearing halves from the engine block and the bearing caps.
- Thoroughly clean the bearing saddles in the block and caps, ensuring all surfaces are free of oil and debris.
- Install the new main bearing halves, ensuring the locating tangs are correctly seated.
- Apply a generous amount of engine assembly lubricant to the surface of the new bearings.
- Reinstall the main bearing caps in their correct order and orientation. Torque the bolts to the manufacturer's specified values and sequence.
- Verify crankshaft rotates freely and check bearing clearance with Plastigauge as recommended by the service manual.
- Reinstall the oil pan with a new gasket and refill the engine with the correct grade of oil.
Troubleshooting & FAQ
How do I know if I need 0.25mm oversized bearings?
Oversized bearings are required when a crankshaft journal has been machined (ground) down by 0.25mm during an engine rebuild. Always measure your crankshaft journal diameter to confirm the correct bearing size is needed.
What are the signs of a failing main bearing?
Common symptoms include a deep knocking or rumbling noise from the engine's bottom end, low oil pressure readings, and the presence of metallic particles in the engine oil and filter.
Can I replace just one main bearing?
It is strongly recommended to replace all main bearings as a complete set to ensure even wear, consistent oil clearances, and proper engine performance. Mixing old and new bearings can lead to premature failure.
Is any special tooling required for installation?
Yes, a torque wrench is essential for correctly tightening the main bearing cap bolts. Additionally, using Plastigauge to measure oil clearances and a micrometer to verify journal dimensions is highly recommended for a successful installation.
What is the difference between "oversized" and "undersized"?
These bearings are 0.25mm "oversized" in thickness to compensate for a crankshaft journal that has been ground "undersized" by 0.25mm. The terms refer to the bearing and a crankshaft journal, respectively.
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.
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