Powerplus 764 nozzles are a big upgrade for stock TDIs, best used in cars that are modified (larger turbo, exhaust, etc.) and tuned to accomodate this nozzle's fueling. If used in a stock car you can expect about a 25 HP and 50 ft/lb. increase in power. These fit non-PD engined TDIs. They include injector seals.
Genuine Bosio product, direct from Italy. .226 hole size.