OEM Walbro K1-WYTA spiral diaphragm kit PDF Print $16.00 SKU: K1-WYTA OEM Walbro K1-WYTA spiral diaphragm kit Notify Me Add to Wishlist Add to Compare Back to: Walbro Carbs & Parts Description Walbro's patented spiral diaphragm repair kit allowing you to convert your carburetor from traditional rubber diaphragm to Walbro's ethanol compliant spiral diaphragm. Instructions Included.