Crankshaft Bearing Kit – Fits Mercruiser 120, 140, 3.0L, 165 Engines (Replaces 13008)
Crankshaft Bearing Kit – Fits Mercruiser 120, 140, 3.0L, 165 Engines (Replaces 13008) 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 Crankshaft Bearing Kit – Fits Mercruiser 120, 140, 3.0L, 165 Engines (Replaces 13008) provides standard-size main bearings for a wide range of Mercruiser L4 and L6 engines, including the 120, 140, 3.0L, and 165 models manufactured between 1964 and 2008.
It serves as a direct replacement for Mercruiser part numbers 13008, 23-818469, 23-818469001, 23-85675, and 818469001.
- Installation Location: Engine Block
- Bearing Size: Standard size (not oversized or undersized)
- Fuel Type: Gasoline
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket suppliers.
| Brand | Part Number |
|---|---|
| Mercruiser | 13008 |
| Mercruiser | 23-818469 |
| Mercruiser | 23-818469001 |
| Mercruiser | 23-85675 |
| Mercruiser | 818469001 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Mercruiser applications, always verify your engine's serial number against the specified range to ensure correct fitment.
| Brand | Model | CID / Cylinders | Year Range | Serial No. Range | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercruiser | 120 | 153 / L4 | 1964–1986 | 1666601–0B531853 | 23-818469001 | |
| Mercruiser | 2.5L | 153 / L4 | 1987–1989 | 0B531854–0C853255 | 23-818469001 | |
| Mercruiser | 140 | 181 / L4 | 1968–1986 | 2508261–0B450800 | 23-818469001 | |
| Mercruiser | 3.0L | 181 / L4 | 1987–1989 | 0B450801–0C856558 | 23-818469001 | |
| Mercruiser | 3.0L | 181 / L4 | 1990–1994 | 0C856559–0F603999 | 23-818469001 | |
| Mercruiser | 3.0L | 181 / L4 | 1998–2008 | 0L010042 & up | 23-818469001 | |
| Mercruiser | 3.0LX | 181 / L4 | 1990–1997 | 0C856559–0K999999 | 23-818469001 | |
| Mercruiser | 165 | 224 / L4 | 1987 | 0B434941–0B774251 | 23-818469001 | Application requires verification |
| Mercruiser | 160 | 250 / L6 | 1967–1969 | 2048022–2770031 | 23-818469001 | |
| Mercruiser | 165 (6 cyl.) | 250 / L6 | 1970–1981 | 2770032–5813433 | 23-818469001 |
Technical Specs
- Product Type
- Crankshaft Bearing Kit
- Installation
- Engine Block
- Fuel Type
- Gasoline
- Dimensions
- 19.0cm L x 12.5cm W x 7.0cm H
- Weight
- 0.59 kg (1.30 lbs)
- Warranty
- 1-year limited warranty (TMP Global)
- Other Technical Attributes
- Standard size (not oversized or undersized)
What’s in the Box
- 1 x Complete Crankshaft Bearing Set (Replaces 23-818469001)
Installation Notes
- Engine Removal & Preparation: Safely remove the engine from the vessel and secure it on a suitable engine stand. Drain all fluids (oil, coolant).
- Disassembly: Systematically disassemble the engine components to access the crankshaft, following the manufacturer's service manual. Keep all parts organized.
- Crankshaft Removal: Carefully unbolt the main bearing caps and remove the old crankshaft and bearings. Mark the caps for correct reinstallation.
- Cleaning & Inspection: Thoroughly clean the engine block's main bearing saddles and the crankshaft journals. Inspect for any wear, damage, or scoring.
- Bearing Installation: Place the new standard-size bearing halves into the engine block saddles and the main caps. Ensure they are clean and properly seated.
- Crankshaft Placement: Lubricate the new bearings with assembly lube and carefully place the crankshaft back into the engine block.
- Torquing: Reinstall the main bearing caps in their original positions. Torque the bolts to the OEM-specified values and sequence using a calibrated torque wrench.
- Final Assembly: After verifying the crankshaft rotates freely, reassemble the rest of the engine according to the service manual.
Troubleshooting & FAQ
How do I know if this bearing kit will fit my specific engine?
The most reliable method is to check your engine's model and serial number against the compatibility chart on this page. If your model is listed, this kit is designed to fit. For the Mercruiser 165 (L4) model, independent verification is recommended.
What is the difference between standard, oversized, and undersized bearings?
This is a standard size kit, for use with a crankshaft that has not been machined. Oversized (O/S) bearings are used when the engine block's housing bore has been machined, while undersized (U/S) bearings are for crankshafts whose journals have been machined down.
What are the signs of a failing crankshaft bearing?
Common symptoms include a persistent knocking or rumbling sound from the bottom of the engine (rod knock), low oil pressure, and the presence of metallic particles in the engine oil upon inspection.
How often should crankshaft bearings be replaced?
Crankshaft bearings are not a routine maintenance item. They are typically replaced only during a complete engine rebuild or when they fail due to issues like oil starvation, contamination, or high mileage wear.
Can I install these bearings myself?
This is a complex job that requires specialized tools (like a torque wrench and engine stand) and a high degree of mechanical expertise. Professional installation is strongly recommended to ensure proper engine function and longevity.
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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