Main Bearing Kit – Fits Volvo Penta D9/D11 Diesel Engines (Replaces 20867178)
Main Bearing Kit – Fits Volvo Penta D9/D11 Diesel Engines (Replaces 20867178) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Main Bearing Kit – Fits Volvo Penta D9/D11 Diesel Engines (Replaces...
Product Details
This Main Bearing Kit is an aftermarket replacement part designed for Volvo Penta D9A, D9B, and D11 series diesel engines found in marine and industrial applications. It provides the essential components to ensure proper crankshaft support and smooth rotation within the engine block.
This kit serves as a direct interchange for Volvo Penta part numbers 20867178 and 85103707, as well as Volvo 7420867178.
- Installation Location: Engine Block
- Bearing Size: Standard (STD)
- Compatible Fuel Type: Diesel
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket suppliers.
| Brand | Part Number | Notes |
|---|---|---|
| Volvo Penta | 20867178 | — |
| Volvo Penta | 85103707 | Superseded by 20867178 |
| Volvo | 7420867178 | — |
Engine & Model Compatibility
Confirm your engine model in the table below. This kit fits a wide range of Volvo Penta D9 and D11 industrial and marine engines.
| Brand | Model | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|
| Volvo Penta | D9A2A | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D9A2B | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D9A2C | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D9A2D | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D9A2E | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D9A2F | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D9A2G | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D9A2H | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D9A2J | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D9A2K | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D9A2L MH | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D9A2M MP | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D11A-A | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D11A-B | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D11A-C | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D11A-C (IPS) | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D11A-C MP | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D11A-D MP | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D11A-E | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D11A-E MP | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D11B1-A MP | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D11B2-A MP | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D11B3-A MP | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | D11B4-A MP | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | TAD940GE | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | TAD940VE | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | TAD941GE | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | TAD941VE | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | TAD942VE | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | TAD943VE | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | TAD1140-42VE | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | TAD1150-52VE | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | TAD1170-72VE | 4-Stroke | 20867178 | Supersedes 85103707 |
| Volvo Penta | TAD1180-83VE | 4-Stroke | 20867178 | Supersedes 85103707 |
Technical Specs
- Product Type
- Main Bearing Kit
- Installation
- Engine Block
- Fuel Type
- Diesel
- Bearing Size
- Standard (STD)
- Dimensions
- 16.5" L x 8.0" W x 5.0" H
What’s in the Box
- 1 x Main Bearing Kit (Replaces 20867178/85103707)
Installation Notes
- Consult your engine's service manual before beginning work.
- Disconnect the battery, drain engine oil, and drain the cooling system.
- Remove the oil pan and any other components obstructing access to the main bearing caps.
- Carefully remove the main bearing caps and old bearing shells, keeping them in order.
- Thoroughly clean the bearing saddles in the block, the bearing caps, and the crankshaft journals.
- Install the new bearing shells into the block and caps, ensuring the locating tangs are correctly seated.
- Apply a generous amount of engine assembly lube to the new bearings and crankshaft journals.
- Reinstall the bearing caps and tighten the bolts to the manufacturer's specified torque sequence and values.
- Verify the crankshaft rotates smoothly by hand.
- Reassemble all remaining components, refill with fresh oil and coolant, and check for leaks after starting the engine.
Troubleshooting & FAQ
How do I know if this is the correct bearing size for my engine?
This is a Standard (STD) size kit. It is intended for crankshafts that have not been previously machined. If your crankshaft has been ground to an undersize dimension, you will require an oversized bearing set. Always measure your crankshaft journals with a micrometer to confirm the required size before ordering.
What are common symptoms of main bearing failure?
Signs of worn or failing main bearings include a deep, rumbling or knocking sound from the engine that changes with RPM, low oil pressure readings, and the presence of metallic shavings (often copper or silver) in the engine oil and filter.
When should main bearings be replaced?
Main bearings are typically replaced during a complete engine rebuild or overhaul. They are not a routine maintenance item but should be inspected and replaced if you are addressing low oil pressure issues or have the engine disassembled for other major service.
Are any special tools required for this job?
Yes, professional installation is recommended. This job requires precision tools, including a calibrated torque wrench, micrometers for measuring bearing clearance (Plastigauge can also be used), and potentially bearing drivers. Following the engine manufacturer's procedures is critical.
Is this a complete kit for the entire engine?
Yes, this is a full set of main bearings required for one Volvo Penta D9 or D11 engine.
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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