The GIZMOMOTORS intake manifold is CNC machined from Solid billet aluminum. Two teflon gaskets ensure superior sealing. Provides thermal insulation from engine heat. Will not warp or crack. Designed to provide more reliable engine operation and performance by eliminating troublesome air leaks. Fits Zenoah G230RC / G260RC / G231PUH / G260PUH / G260PU / G231PUM / G260PUM engines. Also fits Chung Yang CY23RC / CY26RC / CY27RC / CY29RC / GP290 engines. Works with Walbro WA / WT series carburetors