Connecting Rod Bearing Kit Mark 2 – Fits Yanmar 6LP/6LPA Series (Replaces 119770-00260)
Connecting Rod Bearing Kit Mark 2 – Fits Yanmar 6LP/6LPA Series (Replaces 119770-00260) 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
Connecting Rod Bearing Kit Mark 2 – Fits Yanmar 6LP/6LPA Series (Re...
Product Details
This Connecting Rod Bearing Kit Mark 2 is designed for Yanmar Marine 6LP and 6LPA series 6-cylinder diesel engines (315–400 HP) from the 1990s–2000s. It provides a direct-fit solution for models including 6LP-DT(E/ZE/ZY), 6LP-ST(E/ZE/ZY), 6LP-WDT(ZY), 6LPA-DTP/DTZP, and 6LPA-STP/STZ.
This kit is a direct cross-reference for Yanmar OEM part number 119770-00260 and aftermarket equivalent AM119770-00260.
- Specially sized as Mark 2 for precise crankshaft journal clearances.
- Installs directly into the engine block and connecting rods.
- Includes a full set of six bearing pairs for a complete engine overhaul.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Yanmar | 119770-00260 | Mark 2 |
| Aftermarket | AM119770-00260 | Mark 2 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This connecting rod bearing kit is designed exclusively for the Yanmar 6LP and 6LPA series engines listed.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yanmar | 6LP-DT | Diesel | 119770-00260 | |||
| Yanmar | 6LP-DTE | Diesel | 119770-00260 | |||
| Yanmar | 6LP-DTZE | Diesel | 119770-00260 | |||
| Yanmar | 6LP-DTZY | Diesel | 119770-00260 | |||
| Yanmar | 6LP-ST | Diesel | 119770-00260 | |||
| Yanmar | 6LP-STE | Diesel | 119770-00260 | |||
| Yanmar | 6LP-STZE | Diesel | 119770-00260 | |||
| Yanmar | 6LP-STZY | Diesel | 119770-00260 | |||
| Yanmar | 6LP-WDT | Diesel | 119770-00260 | |||
| Yanmar | 6LP-WDTZY | Diesel | 119770-00260 | |||
| Yanmar | 6LPA-DTP | Diesel | 119770-00260 | |||
| Yanmar | 6LPA-DTZP | Diesel | 119770-00260 | |||
| Yanmar | 6LPA-STP2 | Diesel | 119770-00260 | |||
| Yanmar | 6LPA-STZP2 | Diesel | 119770-00260 | |||
| Yanmar | 6LPA-STZP3 | Diesel | 119770-00260 | |||
| Yanmar | 6LPA-STP | Diesel | 119770-00260 | |||
| Yanmar | 6LPA-STZ | Diesel | 119770-00260 |
Technical Specs
- Product Type
- Connecting Rod Bearing Kit
- Installation
- Engine Block - Connecting Rod
- Fuel Type
- Diesel
- Fitting Type
- Connecting Rod Bearing
- Dimensions
- 5.5 in x 6.5 in x 9.0 in
- Technical Attribute
- Mark 2 size specification
What’s in the Box
- 6 Bearing Sets (Mark 2, replaces 119770-00260)
Installation Notes
- Disconnect the battery and drain all engine oil and coolant.
- Remove the oil pan and any other components obstructing access to the connecting rods.
- Carefully rotate the crankshaft to access each connecting rod cap one at a time.
- Remove the connecting rod cap bolts and the cap, exposing the old bearing half.
- Push the piston assembly up slightly to remove the upper bearing half from the connecting rod.
- Thoroughly clean the rod, cap, and crankshaft journal surfaces. Ensure they are free of oil, debris, and burrs.
- Apply a generous amount of assembly lube to the new bearing halves.
- Install the new bearings into the rod and cap, ensuring the locating tangs are correctly seated.
- Reinstall the connecting rod cap and tighten the bolts to the manufacturer's specified torque sequence and values. Use a torque wrench.
- Verify the rod moves freely on the crankshaft journal after torquing.
- Repeat for all cylinders, then reassemble all previously removed components.
- Refill the engine with new oil and coolant, check for leaks, and test run the engine.
Troubleshooting & FAQ
How do I know which "Mark" size I need for my bearings?
The "Mark" number (e.g., Mark 2) corresponds to a specific size tolerance for the crankshaft journal and connecting rod bore. This is usually stamped on the engine block, crankshaft, or connecting rods. Always verify the required Mark size before ordering, as incorrect sizing will lead to engine damage.
What are common signs of a failing connecting rod bearing?
The most common symptom is a repetitive knocking or tapping sound from the engine, which often gets louder with increased RPM. Other signs include low oil pressure, visible metal shavings in the engine oil, and a lit oil pressure warning light.
Can I replace just one bad bearing, or should I replace the whole set?
It is strongly recommended to replace all connecting rod bearings as a complete set. If one bearing has failed, others are likely worn and operating under similar stress. Replacing the full set ensures consistent clearances and reliable engine performance.
What causes connecting rod bearings to fail prematurely?
The primary causes of premature failure are oil starvation (low oil level or pressure), oil contamination (dirt, fuel, or coolant), improper installation (incorrect torque or insufficient lubrication), and excessive engine load or RPM.
My engine model is listed, but the part looks different. Why?
Manufacturers sometimes make mid-cycle changes. Always compare the photos and specifications in this listing to your old part before purchasing. If they do not match exactly, do not install. Contact us with photos of your part for assistance.
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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