This is the Gasket Set for the O.S. Max .18CV series engines; 11874 .18CV-R(P) w/11G CARB 11870 .18CV-R W/ROTARY CARB OSMG2102 11881 .18CV-RX W/11G CARB OSMG2104 11880 .18CV-RX W/ROTARY CARB OSMG2105 11860 .18CV-RX(S) W/ROTARY CARB FEATURES: Brass, Copper, Silicone construction YOU WILL RECEIVE: One copper head gasket 16.1mm ID x 21mm OD x 0.09mm thick One brass head gasket 16.1mm ID x 21mm OD x 0.18mm thick One silicone coverplate gasket 15.8mm ID x 18.6mm OD REQUIREMENTS: Installing in the engine SPECIFICATIONS: See "Includes" above tjt 050504 ir/jxs &