15 lb / 15 psi radiator pressure cap suitable for the Iseki Tractor 1500 (2WD). Can be used as a radiator cap / filler cap / expansion tank cap where applicable. This cap fits a radiator with a 56 mm filler neck. If your radiator neck measures 43 mm, please see our other Iseki radiator cap: eBay item number 154055478523. This cap is supplied as a double sealed cap and is suitable for use on a sealed recovery system. In a sealed recovery system, the cap (double seal) allows coolant to flow to and from the recovery or expansion tank, maintaining the integrity of the cooling system. Please note: Some early pressure caps only had one seal. If your existing cap is the single seal type (only one rubber seal – the small rubb.
