1.40 Main Jet for 40/44 HPMX, 40/44/48 IDF, EPC 48/51, 48 IDA carburetor.1.40 Main Jet for 40/44 HPMX, 40/44/48 IDF (43-5307-0)SKU: 43-5307-0$11.42PriceCARB PARTS/RELATED (optional)SelectQuantity*Add to CartBuy Now