With or without air filter 26 mm intake Left side manual choke For 4-stroke engines PZ26 (Keihin PD) Our PZ26 4-stroke carburetor is for Honda Clone gas engines with a 26 mm diameter engine-side opening The model PZ26 is the same as the Keihin PDDescription Our PZ26 4-stroke carburetor is for Honda Clone gas engines with a 26 mm diameter engine-side opening. The model PZ26 is the same as the Keihin PD. This larger carburetor is typically used on 4-stroke powersports machines with 125cc – 150cc displacement engines. This size engine is widely used on ATVs, go karts, dirt bikes, and some older models of gas scooters.A carb is like a powersports engine’s lungs, and quality parts like these ensure a better ride. Because a carburetor works best when the air that flows into it is clean, we offer this fine PZ26 (or “PD”) carb with or without a matching filter to keep the dust and crud out. Whether you only need the carb or if you prefer the carb & filter combo, we are sur