68 mm Stainless Steel Radiator Filler Neck & 15 lb Pressure Cap – British Made

British-made 304 stainless radiator filler neck supplied with a round 15 lb zinc-plated cap—ideal for commercial and custom cooling system builds.

Item Description

This 68 mm radiator filler neck and cap set is designed for reliable sealing on heavy-duty and specialist cooling systems. The neck is manufactured from grade 304 stainless steel for corrosion resistance and durability, while the cap is mild steel with a zinc-plated finish.

Stainless Steel Radiator Filler Neck

Top Diameter (OD) 68 mm
Bottom Opening (OD) 40 mm
Material Grade 304 Stainless Steel

Please confirm dimensions before purchase to ensure correct fitment for your radiator or header tank.

Pressure Cap

  • Type: Round style
  • Outside Diameter: 70 mm
  • Pressure Rating: 15 lb / PSI
  • Material / Finish: Mild steel, zinc plated
  • Compatibility: Fits filler neck listed above

Please note: Neck is 304 stainless steel. Cap is mild steel, zinc plated, rated at 15 lb / PSI.

Shipping & Dispatch
  • Stock items: Dispatched in 1–2 working days.
  • Made-to-order / custom items: Dispatched in 2–4 working days.
Smooth Checkout

Enjoy a smooth checkout process. Please ensure the pressure rating and dimensions are correct for your application before ordering.

Customer Support

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Returns

30 Day Returns. Items must be returned unused and in original condition where possible.

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