REFRIGERANT CAUTION LABEL 134A - PLEASE NOTE: When servicing R-12 and R-134a systems, the tools that come in contact with the refrigerant (such as gauge sets, charging equipment and recovery recycle equipment) must be dedicated to one refrigerant or cross contamination may occur. CROSS REFERENCE NUMBERS: Red Dot Part No.: 79R0020, Red Dot Factory Part No.: RD-5-7106-0M, Alliance Part No.: ABP N83 327315, John Deere Part No.: TCU18901, Kysor Part No.: 2899035, Mack Part No.: 4379-RD571060, Volvo Part No.: 176576, 3917896, RDHRD571060M.