NISSAN 21300-VC22B Engine Oil Cooler Set

The genuine Nissan 21300-VC22B oil cooler set (COOLER SET-OIL) is a premium quality, original OEM component responsible for optimal temperature regulation of the engine lubrication system. The oil cooler plays a critical role in preserving engine oil viscosity, preventing lubricant overheating and resulting lubrication failures.

Technical Characteristics and Specifications

• Manufacturer: Nissan OEM
• Part Number: 21300-VC22B
• Part Type: Oil Cooler Set (Cooler Set-Oil)
• Material: High thermal conductivity, corrosion-resistant aluminum alloy
• Construction: Optimized plate-and-tube design for maximum heat dissipation

Function and Importance of the Oil Cooler

Under heavy loads or sustained highway driving, engine oil temperature can rise significantly. The oil cooler cools the engine oil flowing through it via the cooling system. By maintaining a stable oil temperature, this component protects the engine's internal moving parts (bearings, pistons, camshafts) from premature wear and critical overheating.

Typical Symptoms of Failure

• Oil Leakage: Appearance of oil stains around the cooler body or beneath the vehicle due to aging seals.
• Coolant Contamination / Intermixing: If the internal core of the oil cooler breaches, oil can enter the cooling system (brown, sludgy deposits in the expansion tank) or coolant can enter the engine oil (frothy, milky coffee-colored oil on the dipstick), which can lead to severe engine damage.
• Elevated Engine Temperatures: Insufficient cooling efficiency can cause both engine and oil temperatures to rise into critical operating ranges.