Genuine 21507-4U00A Lower Radiator Mount Insulator Bushing

The Genuine 21507-4U00A is an OEM lower radiator mounting rubber bushing designed to secure and support your vehicle's radiator assembly. This durable rubber insulator absorbs vibrations and shocks from rough roads and bumps, protecting your radiator from excessive movement.

Key Features:

• Genuine Nissan OEM part (supersedes 21507-4U000)
• Positions: Left Lower, Right Lower mounting locations
• Engineered to withstand extreme under-hood temperatures
• Functions similar to a shock absorber for your radiator
• Lightweight design at approximately 0.033 lbs

Radiator insulators can weaken over time from constant vibration dampening, crack from prolonged engine heat exposure, or break during front-end collisions. Signs of worn bushings include coolant leaks or clunking noises when driving over bumps. This component is also known as a Radiator Bracket Lower Mount, Radiator Lower Mount, or Mounting Rubber Radiator Lower.

Professional installation by a Nissan technician is recommended due to the complexity of accessing radiator mounting points in the engine bay.