This chrome plated Monza filler cap is a 2.5-inch quick-release fuel cap for Austin Healey BN4 to BJ8 models. Inspired by period competition fittings, it adds both practicality and visual appeal while ensuring rapid, secure access to the fuel tank. Supplied complete with the brass collar, it is designed to replace the factory screw-type cap with a motorsport-style alternative.
Yes, this filler cap fits Austin Healey BN4 to BJ8 (1956–1968). It does not fit early BN1 or BN2 models due to their different filler neck design.
The fitting of these requires the fuel tank filler tube to be modified and the brass threaded collar requires brazing to the filler neck. This work should be carried out by a competent restorer or fuel system specialist. Dry-fit the collar before brazing to confirm alignment.
This cap combines motorsport-inspired looks with practical functionality. Unlike generic aftermarket caps, this Healey-specific version includes the correct brass collar to match BN4–BJ8 filler necks. Owners who prefer a lighter finish can choose the polished alloy version.
No, it fits BN4 to BJ8 only. BN1 and BN2 require a different filler neck design.
Yes, the brass threaded collar is supplied for brazing to the filler neck.
The filler tube must be modified and the collar brazed to the filler neck during installation.
Yes. Brazing is best carried out by an experienced restorer to ensure safety and fuel-tight sealing.
CHROME, COLLAR INCLUDED
