Underslung tank installation cost?

[Cirrus]

Post copied over from thread below, which was split as it went off topic. Ads_Essex

For Sale - 2018 T32 Campervan | 150PS | £35k upgrades

Any idea how much it would cost to have an under slung water container installed?

 

[airhoguk]

@Cirrus you have two external options for external tank, one goes along the side cill from cak tanks or autocraft motor caravans, the other fits around the spare wheel also available from autocraft. Depending on whether you can use the existing water pump or not makes a difference in the purchase cost but they are about £160-£190 plus fitting. The cill mounted unit takes 40 litres, the spare wheel surrounding one takes 69 litres. Fitting wise I would guess you’d be looking at about £250-300 but that’s a guess. I fitted the 69 litre to my T5.1 and wasn’t too much aggro.