Restore smooth and precise gear changes with this Genuine Nissan 4th Gear Synchro Ring, designed to suit Nissan Patrol GU Y61 models fitted with the FS5R50B manual transmission. This OEM synchroniser ring plays a critical role in matching gear and shaft speeds during gear changes, ensuring smooth engagement of 4th gear and reducing grinding, crunching, or difficult shifting.

Over time, the synchro ring can wear due to high mileage, aggressive shifting, heavy towing, off-road use, and general transmission wear. A worn synchro can result in difficult gear engagement, gear crunching when selecting 4th, or increased transmission noise. Replacing it with a Genuine Nissan component helps restore smooth shifting performance and extends the life of the gearbox.

Features & Benefits

• Ensures smooth and precise 4th gear engagement
• Helps reduce gear grinding and shifting noise
• Manufactured to Nissan factory specifications for correct fitment
• High-strength synchroniser material for durability
• Restores proper gearbox synchronisation performance
• Direct replacement for worn or damaged synchro rings
• Ideal during gearbox rebuilds or clutch/transmission servicing
• Helps extend overall transmission life and reliability

Vehicle Fitment

• Nissan Patrol GU Y61

Please check your vehicle compatibility before purchasing. Contact us with your VIN if you require assistance confirming fitment.

Common Signs You May Need 4th Gear Synchro Replacement

• Difficulty selecting 4th gear
• Gear crunching or grinding during shifts into 4th
• Transmission noise during gear changes
• Worn or high-mileage gearbox symptoms
• Poor synchronisation between engine and gearbox speeds
• 4th gear slipping or inconsistent engagement
• Gearbox being rebuilt or serviced
• Preventative replacement during clutch or transmission overhaul

Replacing a worn 4th gear synchro ring helps restore smooth shifting performance, reduce gearbox wear, and ensure reliable gear engagement in your Nissan Patrol GU Y61. Using a Genuine Nissan OEM component guarantees precise fitment, long-lasting durability, and factory-correct operation.