Crafted with precision, this protective shield is designed to fortify the vulnerable crank seal hidden behind the harmonic balancer, ensuring your engine remains safeguarded against potential catastrophes. In the unpredictable world of automotive maintenance, the Crank Seal Guard stands as an indispensable component for your vehicle's well-being. The N5x models confronts a potential risk with its accessory belt situated beneath common leak areas in the car's oil and coolant system. In the event of a leak, the accessory belt may start to displace from the crank pulley. Due to the engine's design, small rubber shards from the deteriorating belt can easily pass through the crank seal. This poses a threat as these belt fragments may be drawn into the timing chain, entering the valve cover, and causing damage. Alternatively, these particles can lodge in the oil pickup, leading to engine oil starvation. In more severe cases, the belts might snap, wrapping around the crank pulley and forcing the entire belt into the engine through the crank seal. Such scenarios can result in catastrophic engine failures, necessitating expensive engine replacements.Learning these detrimental engine issues, the Founder of MaLo Industries developed a robust solution to prevent such disasters. Rigorously tested on N51, N52, N53, N54, N55, and S55 engines, it boasts 100% confirmed fitment, establishing itself as a trustworthy guardian for your engine's health.Don't wait for the inevitable – prepare your car for the challenges ahead with the Crank Seal Guard. Engineered to perfection, it's not just a protective measure; it's an investment in the longevity and well-being of your BMW's heart. Choose the Crank Seal Guard – because prevention is the best solution. This kit comes with 2 stainless steel replacement bolts, washers and 0.5ml of Loctite.