PP357s fit all rotary pump TDIs. They provide a mild improvement in fueling in manual transmission cars, and a significant increase in automatic TDIs. They are nominally the same size as stock manual-transmission injectors, but flow about 6% more fuel because of their hole design. They are an excellent mild upgrade on A3 and B4 TDIs (AHU and 1Z engines), and work extremely well in those cars when combined with a chip-tune. They are also ideal for upgrading power on an automatic TDI when chip-tuning the car and keeping the stock turbo. Includes injector seals.
Genuine Bosio product, direct from Italy. .184 nominal hole size.