Enhance your braking system with this high - quality OTK aluminum brake pump reservoir tank cap. It's a perfect fit for the BSM4 master cylinder and offers reliable performance.

Using this tank cap is easy. First, make sure your brake pump reservoir is clean. Then, simply place the cap on the reservoir and twist it until it's firmly in place. When it comes to maintenance, check the cap regularly for any signs of wear or damage. If you notice any cracks or looseness, replace it right away. Also, keep it clean to prevent dirt from getting into the brake fluid. That way, your braking system will work smoothly for a long time.