Just Lambda import them from USA, and they are the only sensors that come with an OE connector (other then Subaru) for Direct fit.
The header one is about £250 from Subaru so saves about £170.
You will require the one with the longer wire as it is in the header.
The Connector is on the top corner of the cam cover on the drivers side.
So i would check which connector you have and order as required.
I'm pretty sure though that yours will be the transulcent connector rather then the white one, which I think is MY99/00.
Not the end of the world though as a small screwdriver can release the contacts to swap connectors.
http://www.oxygensensors.co.uk/
Our own Just Lambda brand (OE specification) imported by us from the USA Plug Style.Subaru
Cable Length 380 mm 250-23083
Part No.
22690-AA090
22690-AA092
22690-AA150
22690-AA170
22690-AA180
22690-AA190
22690-AA270
22690-AA310
22690-AA330
22690-AA740
click
Cable Length 375 mm 250-23088
22690-AA220
22690-AA220F
375 mm250-23088
click
Cable Length AA161100 mm 250-23103
22690-AA160
22690-AA161100
click ALL our prices include VAT and UK carriage via First Class Post.</SPAN>