163-2-254 obsolete, no replacement;Thermostat VK 4354 VKL2351 - 1 box=25 pcs VKL2301 - 1 Box=25 pcs 568-583-0045 780-583-0009 VK4254 (box of 25 pieces) VK4254 VKL2201 WT5 A 70° N° 2017 L450 - obsolete, no replacements; VKL 2201 7 INCH VK 4353 VK4553 30-110C obsolete replaced by VKL4353 P/N: 2027, LEVEL MODEL VK4251 (box 25 pcs.) VK4251 - Alternative for 10-88DEGC