Longacre is an established brand name in the racing industry and is recognized for dedication to quality, innovation and customer satisfaction. Whether you are into stock, modified, drag, go kart, off-road, sprint or RC car racing, Longacre will provide you with the quality racing parts you deserve. Quickly tell - from the outside - when your engine needs an overhaul! This easy-to-use Longacre Leak Down Tester checks ring seals, valves, even head gaskets. Don't wait too long to rebuild that expensive motor - but don't do it too soon either!