This oil cooler kit is compatible with 167FMM CG250 engines. It will also work with CG 200, CG 150. This kit is a direct bolt on and features top down cooling. This is a must for anybody that has modified their CG engine or wants to keep their stock engine running cooler. It will keep the engine oil and engine itself cooler during hard riding or just in general. It will increase the engine life by keeping the oil at optimal temperatures. You can expect anywhere from 25 to 50° temperature decrease with this kit.