Are you tired of dealing with cylinder head issues in your engine? Look no further than our brand new and fully loaded C15 Universal Cylinder Head. This head is compatible with both Acert and non-Acert engines, making it a versatile and reliable choice for any application. Our castings are engineered, designed, and assembled in the U.S.A. with better-than-OEM quality materials. With 5% more nickel content in the casting material, our cylinder head is less likely to crack between the valves. Plus, we've enlarged the coolant passages by 30% and reinforced the inner ribs to reduce heat stress. But that's not all - our Stage 2 Cylinder Head takes performance to the next level. Upgraded with inconel valves, this head can withstand higher temperatures and pressure, making it the perfect choice for those looking to get more out of their engine. Say goodbye to common fracture issues with standard valves and hello to superior quality and durability. Don't settle for a subpar cylinder head that's prone to corrosion, pitting, and cracking. Upgrade to our Stage 2 Cylinder Head and experience the benefits for yourself. Trust us, your engine will thank you.