A brand‑new Mountfield Primer Bulb is the perfect replacement for the GGP RS100, HP 414, SP 414, HP 42R, HP 45 and SP 164 lawn‑mower models. Designed to match the original specifications, this kit restores the quick‑start function of your mower so you can get cutting in seconds.
What’s inside the kit
– 1 × Primer bulb (high‑quality, pressure‑rated)
– 1 × Flexible pipe for easy routing
– 2 × Durable clips for secure mounting
Why choose this primer bulb?
– Exact fit – engineered to work with a long list of Mountfield models (HP164, SP164, HP46, HP42R, SP42R, and many more).
– Premium materials – UV‑resistant rubber and corrosion‑protected metal ensure long‑lasting performance.
– Simple installation – the included pipe and clips make replacement a quick DIY job; no special tools required.
Key benefits
– Restores reliable fuel priming for smooth engine start‑up.
– Reduces wear on the pump by delivering consistent pressure.
– Keeps your mower operating at peak efficiency, extending its service life.
Compatible with all listed Mountfield series, this primer bulb is a cost‑effective alternative to OEM parts while meeting the same performance standards. Keep your mower ready for every cut—replace the worn bulb today and enjoy hassle‑free starts every time.





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