VW 1.5L diesel injection pump. Completely remanufactured injection pump. Remanufactured and fully tested by a Bosch certified rebuilder. $125 core charge.
Since your diesel has been on the road for a while, you should consider replacing your glow plugs, with a glow plug kit. Also, keep your pump and engine lubricated and running it's best in all weather with Stanadyne fuel conditioner.