Steel Synchronizer Ring Set ME514690 for Mitsubishi Fuso

Verify ME514690 on your original steel rings before ordering. Steel rings attract a magnet. Bronze rings do not. Do not mix steel and bronze rings in the same transmission. Confirm transmission model and quantity per set. GL-4 oil only. Professional installation required.

The ME514690 synchronizer ring set contains steel rings with sintered friction lining for Mitsubishi Fuso heavy-duty manual transmissions. Steel construction withstands higher heat than bronze and delivers longer service life. Each ring features indexing tangs for hub alignment and oil channels for fluid evacuation. Applications include M042, M045, and M150 series gearboxes behind 6D14 to 6M60 engines. Worn rings show polished lining or missing chunks. Replacement restores clean shifting.

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Installation Essentials: Steel rings require gear cone hardness of 45-52 HRC. Softer cones from bronze-design transmissions will fail. Before installing, inspect the friction lining for roughness. Glossy lining indicates a defect. Use a magnet to confirm all old rings are steel. Replace all rings on the same shaft together. Do not mix materials.

Q1: How many rings come in the set?

A1: Set quantity varies. Check the listing title for exact count. Typical sets include three to five rings.

Q2: Can I replace bronze rings with this steel set?

A2: No. Steel rings ruin softer bronze-design gear cones. Use original material only.

Q3: What oil kills steel synchronizer rings?

A3: GL-5 oil destroys the friction lining. Use GL-4 80W-90 or 75W-85.

Q4: How to test an old ring for wear?

A4: Press ring onto gear cone and twist. Any rotation means worn. Also check lining thickness below 0.3mm.

Q5: Return policy for wrong fitment?

A5: Returns accepted within 30 days. Unused, original packaging. Provide transmission model and photos. No returns after installation.