A reliable replacement fuel‑tank cap designed for MacAllister, Murray and Webb lawn mowers that run Briggs & Stratton engines. This brand‑new cap delivers the same fit and finish as the original part while keeping your mower’s fuel system sealed against leaks and spills.
Key features
– Exact fit for 42 mm vertical Briggs & Stratton fuel filler necks (3.5 HP, 5 HP & 6 HP).
– Internal thread: ~42 mm; outer diameter: ~45 mm; height: ~19 mm; overall width: ~53 mm (measurements are approximate).
– Compatible with a wide range of models – MacAllister, Murray, Hawksmoor, Webb and many other brands that use Briggs & Stratton power units.
– Made from premium‑grade material for durability and a tight seal.
Why choose this cap?
It’s a cost‑effective alternative to the OEM part, backed by a quality‑focused manufacturer. The cap’s dimensions match the original specifications, ensuring easy installation – just twist it on and you’re ready to refuel.
Fit check
Before purchasing, compare the cap’s image with your existing fuel filler to confirm compatibility. This cap is intended for engines with a 42 mm filler neck only; it will not fit other sizes.
Upgrade your mower’s fuel system today with a dependable, easy‑to‑install fuel cap that keeps performance smooth and reliable.





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