Below are the OEM Part numbers and also the cost for the MK4 headlamps washer jet and bumper cover.
Just to note that Covers are primered and not painted
Nearside (passenger side):
Headlight washer Jet : 1JO955103A (Price from VW and TPS is £9.55 + VAT)
Headlight washer cover : 1JO955109A007 (Price from VW and TPS is £10.99 + VAT)
Offside (Drivers side):
Headlight washer jet : 1JO955104A (Price from VW and TPS is £9.55 + VAT)
Headlight washer Cover : 1JO955110A007 (Price from VW and TPS is £10.99 + VAT)
Hope it helps.....