Powerplus 520 nozzles are a significant upgrade in fueling for ALH TDIs. They are nominally the same size as .205s, but flow more fuel because of superior tip design.
This set of 4 nozzles will work well in a stock TDI, providing about a 15 HP and 25 ft./lb. power increase. They will also work in chip tuned cars, although they may tend to smoke with a stock turbo and a chip. If you're not upgrading your turbo the Sprint 520s may be a better option on a manual-transmission TDI, and the PP357s may work better on an automatic.
These fit non-PD engined TDIs. They include injector seals.
Genuine Bosio product, direct from Italy. .205 hole size.
- Golf TDI MkIV (A4 chassis) w/ ALH Engine (1999-2003)
- Jetta TDI MkIII (A3 chassis) w/ AHU Engine (1997-1999)
- Jetta TDI MkIV (A4 chassis) w/ ALH Engine (1999-2003)
- New Beetle TDI (A4 chassis) w/ ALH Engine (1998-2003)
- Passat TDI (B4 chassis) w/ AHU/1Z Engine (1996-1997)
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