RIVA ENGINE COOLING UPGRADE KIT, SVHO, STAGE 1/STOCK This simple kit improves water flow to Yamaha SVHO engine and intercooler for improved performance & reliability. Greatly reduces loss of power due to "heat fade" on stock and Stage 1 modified craft. Includes tools necessary to enlarge restrictive water passages in original plastic water fittings...
Fast connection of water 3/8 Billet aluminum thru-hull connector to secure 3/8-inch waterline routed through transom or bulkhead. Anodized to prevent corrosion.
Brass Fittings for Yamaha 4 strokes