13 lb / PSI Stainless Radiator Pressure Cap & 56 mm Stainless Filler Neck Short-reach 304 stainless steel radiator filler neck with 13 lb pressure cap – ideal for custom builds and cooling systems. The 8 mm overflow pipe is supplied loose and must be welded into position when fitting the neck to the tank. This is intentional to ensure a clean, contamination-free weld and proper installation. Manufactured from grade 304 stainless steel, this filler neck and cap set is designed for durability, corrosion resistance, and reliable sealing on pressurised cooling systems. Suitable for welding directly to radiators, header tanks, and custom cooling setups in automotive and performance applications. ↩️ 30 Day Returns – Items.
