A reliable replacement fuel tank cap for Mountfield lawn‑mower engines – perfect for the SV150 and SV200 models (part 18550001). Made from durable, premium‑grade material, this cap seals your fuel tank securely and resists leaks, keeping your mower running smoothly season after season.
Key specifications
– Internal thread: ≈ 47 mm
– Inner diameter: ≈ 7 mm
– Height: ≈ 25 mm
– External width: ≈ 57 mm
Fitment – Designed to match a wide range of Mountfield engines (e.g., 45‑24‑3434‑71, 421 HP, 461 R HP, HL454, HP184/414/454/474, M150, RV150, SV150/200, etc.). The same dimensions also work with many Champion and Sovereign models; check the image gallery for exact compatibility before ordering.
Why choose this cap?
– Premium quality: engineered to the same tolerances as OEM parts.
– Easy installation: threads on smoothly without tools or modifications.
– Leak‑free performance: prevents fuel spillage and protects the engine’s intake system.
Note: All measurements are approximate; verify the pictured cap matches your existing fuel cap. This is a high‑quality aftermarket part that meets the specifications of the original manufacturer but is not an OEM component.
Upgrade your mower’s fuel system today with a dependable cap that delivers peace of mind on every cut.





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