7.9mm – 32mm – 43mm – Billet Water Neck


£9.88 (price includes VAT)

Our weld-on billet water necks are CNC machined from 6061-T6 Aluminium Alloy providing excellent quality with superior finish and bevelled edges. These water necks are perfect for custom built radiators or relocating the filler neck on an existing radiator. They can also be used for custom fabricated header tanks and swirl pots.

Our water necks include an NPT threaded overflow barb adapter.

Specification Metric
Neck I.D 32mm
Neck O.D 43mm
Bore 19mm
Height 20mm
Overflow Barb Size O.D 6.3mm
Overflow Barb Thread Size
Material 6061-T6 Aluminium Alloy
Finish Polished Aluminium
Brand Pioneer 4×4

Billet Water Neck Dimensions


  • Please double check you are ordering the correct size and quantity prior to checkout.

United Kingdom

  • Royal Mail 24 Tracked Small Parcel £4.30
  • Royal Mail 48 Tracked Small Parcel £3.70
  • Royal Mail 24 Tracked Large Parcel £6.10
  • Royal Mail 48 Tracked Large Parcel £4.90
  • DHL Express £9.99

Delivered within an estimated 3 working days once dispatched


  • Royal Mail Tracked From £14.99
  • DHL Express From £19.99

Delivered within an estimated 7-10 working days once dispatched

Rest of the World

  • Royal Mail Starting from From £24.99
  • DHL Express From £24.99

Delivered within an estimated 10 working days once dispatched. Import duties, taxes, and other charges are not included in the price of the product or the cost of shipping. These fees are the sole responsibility of the buyer. Please check with the customs office in your country regarding your fees before making a purchase.


All our brake line kits are made to order and are usually made and dispatched within 5 days of ordering. If you require your kit sooner, please do let us know. 

If there is a delay with your order, you will be notified as soon as possible.

Some of our tracked delivery options require a signature. If there is no one available to sign for the delivery, a card will be left for you to arrange delivery at a suitable time.

If a delivery has not been attempted within the timescales stated, please contact us so we can investigate it for you.