Boat fuel tanks
Under-floor and deck tanks shaped to the hull, with baffles, sender flanges, fillers and pick-ups to marine standards.
Custom fabrication · Automotive & marine
Fuel and water tanks made to the space you have.
Fuel & water tanks
Marine fuel tanks, ute and truck diesel tanks, transfer tanks, camper water tanks and farm tanks fabricated in marine-grade aluminium with internal baffles, welded fittings and a pressure test before they leave. Shaped to the hull, the chassis or the tray.
Indicative pricing · NZD
$900
from, + GST
$900–$6,000 + GST depending on capacity and fittings
Price guide & quoted scopeOr call Matt 021 2555 443
- Marine-grade alloy
- Grade and thickness confirmed for the application
- Baffled
- Stops surge and slosh
- Pressure tested
- Every tank, before it leaves
02 / Price & scope
Indicative fuel and water tank pricing.
Indicative range only. Capacity, shape, plate thickness, the number of fittings and the mounting all move the price.
Discuss your quote with MattCustom aluminium tank
From a small boat tank to a long-range truck diesel tank.
$900from, + GST
$900–$6,000 + GST depending on capacity and fittings
Details to agree for your job
- Marine-grade 5083 or 5052 aluminium
- Internal baffles and welded fittings
- Pressure tested and leak checked
- Made to your drawing or the old tank
Scope & other costs
Fuel tank design, fittings, installation and any testing or certification requirements must be agreed with your marine or vehicle specialist before manufacture.
03 / Also built here
Plan the rest of your project.
Explore related products, or talk to the Patumahoe workshop about stainless steel, aluminium and mild steel fabrication.
Welding & repairs
TIG and MIG repairs in alloy, stainless and steel — boats, trailers, utes, gates and farm gear.
Stock crates
Lift-off alloy stock crates, calf crates and sheep crates for utes, small trucks and trailers.
Dairy shed stainless
Milking rails, gates, wash tubs, vat stands and splash panels for herringbone and rotary sheds.
04 / The practical details
Questions about aluminium fuel and water tanks.
Can you copy my old tank?
Yes. Drop it in, or send photos and measurements, and we build a replacement in the same footprint with the fittings in the same places — or better ones if the old layout was the problem.
Aluminium or stainless?
Aluminium is lighter and the norm for boats and vehicles. Stainless suits water and food-grade tanks and some fixed farm tanks. Both are welded here.
Are the tanks tested?
Every tank is pressure tested and checked for leaks before it leaves the workshop. Vehicle and marine fuel tanks are built to the standards those installs require.
How it works
Spec, quote, fabricate, fit.
01
Spec
We confirm size, materials, the loadings or spec and how it will be used.
02
Quote
It is all priced before any steel is cut, so there are no surprises.
03
Fabricate
Built in the Patumahoe workshop to the agreed spec.
04
Fit
Delivered, fitted or installed and checked over before handover.
Let’s make it fit
Show Matt what you’re working with.
Send through photos, rough measurements and how it’ll be used — we’ll come back with a practical next step and a price.