Prolonged vehicle operation, as is the case with today's modern diesel engines may also affect it fuel injection pump which needs to be periodically checked or service to maintain its level or performance and fuel efficiency, most especially when you consider the rising fuel prices. Every DENSO service outlet carries a complete inventory of genuine DENSO parts with specially trained technicians using only the latest test equipment to ensure the longevity, quality and performance that equates to a total worry-free driving.