The 29cc Bonzi “Very Cool” Water Jacket is an exclusive premium cooling design created for the Zenoah G290PUM & G300PUM. (Note: The “Very Cool” Water Jacket is standard on the BZx4 Ultra engine modification package). Features: CNC machined fins for increased heat dissipation 2 inlets and 2 outlets for increased cooling water flow Increased water volume for more efficient cooling and better fit under the hatch (as compared to the stock Zenoah jacket) Includes stainless steel cap screws (for mounting) and brass water fittings Available in 7 anodized colors 2″ wide x 2″ long x 1 1/2″ high
