This is the complete 11H Slide Carb used on the following engines: .12TZ(P)-T 3 PORT TURBO FEATURES: Genuine O.S. replacement parts Slide carb design INCLUDES: One complete 11H carb w/pre-installed Thermo Insulator OSMG6247 and 5.5mm Black Carb Reducer OSMG2476 One rubber carb gasket OSMG6220 REQUIRES: Installing on engine SPECS: Length: 0.87" (22mm) approx. including needle and idle stop screw Width: 1.7" (44mm) approx. including needle and throttle arm Height: 1.71" (43.6mm) approx. including needle Diameter: 0.63" (16.1mm) OD of intake (throat) 0.51" (12.9mm)ID of intake (top) not including Carb Reducer 0.51" (12.96mm) OD of neck including thermo insulator (the part that inserts into the crankcase) 0.26" (6.64mm) ID of neck @ narrowest point (top) 0.35" (8.88mm) ID of neck @ widest point (bottom) COMMENTS: Carb can be identified with an "11H" on the back side of carb body Needle Settings: Needle Valve (aka High Speed Needle):1¾ open from closed position per page 18 of engine manual. Mixture Control Screw (aka Low Speed Needle):The head of the mixture control screw is flush with the carb body per page 25 of eng manual Metering Needle: Head of metering needle screw is flush with the ball link body per page 25 of engine manual. Throttle Stop Screw: This is set so the rotor is still 0.5mm open when closed per page 18 of engine manual. tjt 052605 ir/jxs