Radiator Pressure Cap for John Deere 40 and 50 Series Tractors SKU: QT58430

When your radiator cap fails to hold proper system pressure, coolant boils at lower temperatures and overheating becomes inevitable during hard work. This replacement pressure cap maintains the correct system pressure to keep coolant from boiling over, even when you're pushing your tractor through tough conditions.

Why Pressure Control Matters

• Raises coolant boiling point for consistent cooling performance under load
• Spring-loaded pressure valve prevents system damage from over-pressurization
• Quality seal eliminates coolant loss and prevents air infiltration
• Built to withstand heat cycling and daily farm use

Replaces These Part Numbers

• John Deere 58430
• John Deere RE24897
• John Deere RE369103
• John Deere 26/151-90
• John Deere 151-90
• John Deere 74712193

Whether you're baling hay in July heat or working heavy ground, proper cooling system pressure keeps your engine running strong. S&H Parts has the right cooling system components to keep your John Deere working when you need it most.