Which is the correct coolant temperature sensor?

[sbloxxy]

As the title suggest, I'm not sure which one to buy. My car is a 1999 Golf Gti 1.8T and the temperature gauge is working intermittently. I've had a look at the coolant sensor and its got a plug with a black body. The other posts I've read on here suggest it will have either a blue or green body and the ones for sale on Ebay that look the most similar also have green bodies.
Simple question is which one do I need to buy? Will a green one fit?

[Wazzzer]

yours will more than likely be the blue one mate as it's a T plater

059 919 501

[Hulmie]

get a genuine item from either the dealers or Trade Parts Specialists. Have a look in TPS Thread for part number and pricing idea

[Hulmie]

Here you go, mines a 2000 W-Reg AGU and here's what i got

Cooling/Temperature parts

mk4 Golf 1.8T Temp Sender (Green) -     £23.70 exc VAT -       Part Number - S059919501A
mk4 Golf 1.8T Temp Sender Retainer      £0.38 exc VAT           Part Number - S032121142
mk4 Golf 1.8T Temp Sender O'ring          £0.85 exc VAT           Part Number - N90316802

[linz]

i just got my agu a new one and mine was the 4 pin green one (genuine from vw £34)

[sbloxxy]

Thanks for your help everyone. Turned out to be a green 4 pin one. Now fitted and all working perfectly.

[Wazzzer]

apologies mate, I read the chassis numbers the wrong way round on ETKA

[topher]

with AGUs it's always worth pulling the plug off to check if it's spade or pin type connector before ordering the new one .. as even with your reg/chassis number the dealers can still get it wrong