Genuine 45520AG030 Automatic Transmission Oil Cooler Hose

The Genuine Subaru 45520AG030 is an OEM automatic transmission oil cooler hose designed to maintain proper transmission fluid temperature in your vehicle's cooling system. This factory-specification ATF (automatic transmission fluid) hose is the right-hand side cooler line that connects the transmission to the oil cooler.

Key Features:

• Genuine Subaru OEM part for exact fit and reliable performance
• Direct replacement for worn or leaking transmission cooler lines
• Engineered to handle transmission fluid pressure and temperature extremes
• Right-hand (passenger side) transmission oil cooler hose
• Prevents transmission fluid leaks that can lead to transmission damage
• Factory quality construction ensures proper sealing and durability

Transmission cooler hoses are critical components that circulate ATF between the transmission and the cooling system to prevent overheating. Leaking transmission fluid—which appears reddish when new and darkens with age—is often a sign of a failing cooler line that should be replaced with genuine OEM parts to maintain transmission reliability and performance.