Bosio DLC520 - DLC Coated - Set of 4 including Copper Washers (.205mm nominal)
+10whp and 20lb-ft nozzle
Direct replacement for the AFN / ASV Nozzle but with DLC Coatings
Great upgrade for Stock Turbo, Also works will with a level up turbo.
All of our Bosio VE nozzles ship with new OEM sealing washers included.
ULSD (Ultra Low Sulfur Diesel) Rated Nozzles
ULSD Rated Nozzle
DLC (Diamond Like Carbon) coatings cover all of the internal needles sliding surfaces. The lower portion is not coated since this is a direct contact surface that requires a normal wear characteristic to generate the high pressure seal needed during pressure build up prior to and after injection.
The key advantage to a DLC coating is the superior sliding surface it creates between two moving parts. This allows significant reductions in friction, and far greater durabiltiy due to reduced reliance on the lubricity of the fuel.
Standard Needle and Nozzle
A standard needle is uncoated and relies on the end result of the precision machining. This leaves very slight imperfections in the surfaces that increase the reliance on the fuel to prevent wear. Also this slightly increases the friction and thus lowers the response time of the needle consequently lowering its overall efficiency.
Bosio nozzles from Kerma are the best option for maintenance,, or TDI performance upgrades of VW TDI injectors. kermaTDI started the TDI performance market with Power Plus 520 Bosio nozzles. This was the first breakthrough in VW Diesel performance.
Add kermaTDI VW TDI turbo upgrades, and TDI ECU or TDI Tuning upgrades with the Kerma Q Loader flash programmer ...and we can take the 90 Horsepower VW TDI to 135 , 150, or 175+ Horsepower. TDI performance with increased fuel economy , that is why kermaTDI is a leader in VW diesel performance .
Flow Data: +61% over Stock Flow (vs the 90hp Bosch DSLA 150P 706 nozzle)
Supports Power Outputs from: 90-160hp (with supporting modifications)
ULSD Rated Nozzle - 5 year unlimited mileage warranty with Calibration Service.