Tridon 13PSI Small / Large Radiator Cap

Tridon 13PSI Small Radiator Cap - CB1390
Tridon 13PSI Large Radiator Cap - CA1390

CA/CB Series cap
Pressure - 13 (PSI), 90 (kPa)
Recovery Style Cap
Cap Style - Metal
Double Seal
Connection Type - Standard Bayonet

Small caps are typically for most Japanese style systems with the larger caps predominantly for older/American based systems.