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Coolant Caps

36 Products
Shop direct-replacement coolant pressure caps — matched by pressure rating to hold system pressure and stop coolant loss.

Coolant Caps Overview

The coolant pressure cap maintains system pressure and raises the coolant's boiling point; a worn cap lets the system lose pressure and boil over. Van Horn Truck Parts carries coolant caps cross-referenced to OEM part numbers.

Match the cap by pressure rating and neck/thread to your reservoir or radiator.

Mechanic & Fitment Specs:

  • Match by: Pressure rating, neck/thread
  • Cross-references: OEM
  • Buying tip: Match the pressure rating exactly — too low boils over, too high stresses the system