Keep your trailer braking system in top condition with this dedicated Spare Brake Oil Top Up Cap. This cap is specifically designed to fit the 3/4" Master Cylinder, ensuring a tight, leak-proof seal for your brake fluid reservoir. Maintaining proper fluid levels is crucial for consistent braking response, which is why we recommend having a reliable spare on hand.
While the description mentions mounting bolts (likely included with the cylinder itself), this cap is the essential maintenance piece for topping up fluid without contamination or leaks. It’s a small component that plays a big role in the longevity and safety of your over-ride coupling brakes. A practical item every trailer owner should keep in their spares kit
