Thrust Bearing (Axial Bearing) – Fits Yanmar 6LY/8LV Series (Replaces 719593-02590)

Product Details

This Thrust Bearing (Axial Bearing) is a critical internal component designed to manage crankshaft end-play in Yanmar 6LY and 8LV series marine engines. It ensures smooth operation and prevents axial movement that could lead to significant engine damage, making it essential for engine rebuilds and major servicing.

This part is a direct replacement for Yanmar OEM part number 719593-02590.

• Installation: Internal Engine Component
• Material: Durable Metal Alloy Housing
• Design: Engineered to withstand heavy axial loads and extreme marine operating conditions

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Engine & Model Compatibility

Confirm your engine model/year in the table below.

For Yanmar Marine Engines: This bearing fits a wide range of 6LY and 8LV series models. Please verify your specific model against the list.

Technical Specs

Product Type

Thrust Bearing (Axial Bearing)

Installation

Internal Engine Component

Housing Material

Metal (Likely Steel/Brass Alloy)

Dimensions

9.5" L x 9.5" W x 0.5" H

Warranty

Manufacturer's Standard Warranty

Design Feature

Designed to withstand heavy loads and extreme operating conditions

What’s in the Box

• 1 x Thrust Bearing (719593-02590)

Installation Notes

1. Ensure the engine is turned off and has cooled down completely. Disconnect the battery.
2. Drain the engine oil and coolant into appropriate containers.
3. Remove any engine components obstructing access to the crankshaft, such as the oil pan and main bearing caps.
4. Carefully remove the old thrust bearing, noting its orientation and position.
5. Thoroughly clean the bearing saddle and crankshaft surfaces, ensuring they are free of old oil and debris.
6. Generously lubricate the new thrust bearing with fresh, clean engine assembly lube or oil.
7. Install the new bearing into its seat, ensuring it's correctly oriented as per the service manual.
8. Reinstall the main bearing caps and torque them to the manufacturer’s specified values.
9. Use a dial indicator to check the crankshaft end play, ensuring it is within the specified tolerance.
10. Reassemble all previously removed components in reverse order.
11. Refill the engine with new oil and coolant to the proper levels.
12. Reconnect the battery, start the engine, and check for any leaks or unusual noises.

Troubleshooting & FAQ

Safety & Important Info

• Verify images and specifications against your original part before purchase. If anything differs—even if your model appears on a compatibility list—do not purchase.
• This is an aftermarket replacement part, not an original equipment manufacturer (OEM) component.
• Professional installation is highly recommended for safety, performance, and to prevent engine damage.

About Sea Sierra

• Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and rigorously tested for real-world conditions.
• Fast Global Fulfillment — Free standard delivery to most regions, with typical transit times of 5–15 days.
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