The pilot jet is brand new never opened.

O.E.M Part Number 3TJ-14105-40

Make	Model	Year	Submodel
Yamaha	WR400F	2000	All
Yamaha	WR400F	1999	All
Yamaha	WR400F	1998	All
Yamaha	WR426F	2002	All
Yamaha	WR426F	2001	All
Yamaha	WR250F	2003	All
Yamaha	WR250F	2004	All
Yamaha	YZ400	1998	All
Yamaha	YZ400F	1999	All
Yamaha	YZ400F	1998	All
Yamaha	YZ426F	2002	All
Yamaha	YZ426F	2001	All
Yamaha	YZ426F	2000	All
Yamaha	YZ450F	2003	All
Yamaha	YZ450F	2004	All
Yamaha	YZ250F	2002	All
Yamaha	YZ250F	2004	All
Yamaha	YZ250F	2003	All