Crankshaft Bearing Kit – Fits Mercruiser/Volvo Penta 3.0L 181 CID (Replaces 13006)
Crankshaft Bearing Kit – Fits Mercruiser/Volvo Penta 3.0L 181 CID (Replaces 13006) is backordered and will ship as soon as it is back in stock.
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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.).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Crankshaft Bearing Kit – Fits Mercruiser/Volvo Penta 3.0L 181 CID (...
Product Details
This aftermarket Crankshaft Bearing Kit is designed for Mercruiser and Volvo Penta 3.0L (181 CID) 4-stroke marine engines equipped with a one-piece rear main seal, typically found in models from 1991 and later. It provides the essential components needed to restore crankshaft function and ensure reliable engine performance.
Serves as a direct replacement for Mercruiser part numbers 23-818469001 and 818469001, and Volvo Penta part number 3856731.
- Designed for internal engine installation.
- Compatible with gasoline-fueled 3.0L marine engines.
- Engineered for applications using a one-piece rear main seal.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercruiser | 23-818469001 |
| Mercruiser | 818469001 |
| Volvo Penta | 3856731 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
Mercruiser Applications: Fits the 3.0L 181 CID engine with a one-piece rear main seal, generally used in models from 1991 onwards.
Volvo Penta Applications: Designed for the 3.0L 181 CID engine using a one-piece rear main seal.
| Brand | Model | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|
| Mercruiser | 3.0L 181 CID | 4-Stroke | 23-818469001, 818469001 | One-piece rear main seal application (typically 1991-present) |
| Volvo Penta | 3.0L 181 CID | 4-Stroke | 3856731 | One-piece rear main seal application |
Technical Specs
- Product Type
- Crankshaft Bearing Kit
- Installation
- Engine Internal Component
- Fuel Type
- Gasoline
- Dimensions
- 16.5 cm L x 12.5 cm W x 12.0 cm H
- Weight
- 0.45 kg (0.99 lbs)
- Other Technical Attributes
- For engines with one-piece rear main seal
What’s in the Box
- 1 x Crankshaft Bearing Kit
Installation Notes
- Disconnect the negative battery terminal and safely drain all engine fluids (oil and coolant).
- Refer to your engine’s official service manual for instructions to access internal components.
- Carefully remove the oil pan, crankshaft, and old bearings, noting their orientation.
- Thoroughly clean the crankshaft journals and engine block surfaces of any oil, sealant, or debris.
- Install the new bearings into the block and caps, and apply assembly lube as specified by the manual. Ensure they are correctly seated.
- Reinstall the crankshaft and main caps, torquing all bolts to the manufacturer's specified values and sequence.
- Reassemble all remaining components, refill with fresh fluids, and check for leaks before starting the engine.
Troubleshooting & FAQ
What engines does this crankshaft bearing kit fit?
This kit is specifically designed for Mercruiser and Volvo Penta 3.0L (181 CID) 4-stroke marine engines that are equipped with a one-piece rear main seal.
How can I tell if my engine has a one-piece rear main seal?
Engines with a one-piece rear main seal were typically manufactured from 1991 to the present. The most reliable method to confirm is by checking your engine's service manual or consulting with a qualified marine mechanic who can verify the block casting and seal type.
What are common symptoms of a failing crankshaft bearing?
Key indicators of wear or failure include a persistent knocking or rumbling sound from the lower part of the engine, a drop in oil pressure readings, or the discovery of metallic shavings during an oil change. Immediate inspection is recommended if you notice these signs.
Does this kit include all required components?
This package contains a standard crankshaft bearing set. We strongly recommend comparing the items listed in "What’s in the Box" with the parts list in your engine's service manual to ensure you have everything required for your specific job.
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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