Maintain a leak-free cooling system with this Genuine Nissan Lower Radiator Switch O-Ring, designed specifically for Nissan Patrol GQ and GU models. This OEM O-ring seals the coolant temperature switch located in the lower radiator tank, preventing coolant leaks while maintaining the integrity of your engine's cooling system.

Over time, the original rubber O-ring is subjected to constant heat cycles, coolant exposure, and engine vibration, causing it to harden, flatten, or crack. A deteriorated seal can result in slow coolant leaks that are often difficult to detect, leading to coolant loss, overheating, and potentially costly engine damage if left unrepaired.

Manufactured to Nissan's original specifications, this genuine direct-fit replacement provides reliable sealing performance, excellent durability, and long-lasting protection without the need for modification.

Features & Benefits

• Genuine Nissan OEM lower radiator switch O-ring for guaranteed fitment and sealing performance
• Designed specifically for Nissan Patrol GQ and GU cooling systems
• Seals the lower radiator temperature switch to prevent coolant leaks
• Helps maintain correct cooling system pressure and coolant levels
• High-quality rubber compound resistant to heat, coolant, and ageing
• Direct replacement with no modifications required
• Durable OEM construction for long service life
• Ideal during radiator replacement, cooling system servicing, or preventative maintenance

Vehicle Fitment

• Nissan Patrol Y60 GQ  TD42 TB42
• Nissan Patrol Y61 GU TD42 TD42T TD42Ti TB45

Please confirm compatibility before purchase or contact us with your VIN for assistance, as cooling system components may vary by model and build specification.

Common Signs of a Worn or Leaking Lower Radiator Switch O-Ring

• Coolant leaking from around the lower radiator temperature switch
• Unexplained coolant loss requiring frequent top-ups
• Coolant stains or residue around the bottom radiator tank
• Sweet coolant smell after driving
• Visible cracked, hardened, or flattened O-ring during servicing
• Preventative replacement during radiator or cooling system repairs

Replacing a worn lower radiator switch O-ring helps restore a reliable coolant seal, prevent coolant loss, maintain proper cooling system pressure, and protect your engine from overheating and costly repairs.