State of the art construction make them one of the strongest and most durable Nippondenso gear-reduction starters on the market. Unique aluminum housing eliminates hot start problems. 1/3 smaller, 80% more cranking power (1.9HP), 40% lighter and 50% less amperage draw than stock. 4:1 gear ratio. They offer one of the most versatile header and oil pan clearance adjustments on the market.