.50 Idle Jet for 40/44 HPMX, 40/44/48 IDF carburetor..50 Idle Jet for 40/44 HPMX, 40/44/48 IDF (43-5513-0)SKU: 43-5513-0$10.87PriceCARB PARTS/RELATED (optional)SelectQuantity*Add to CartBuy Now