The Performance Detroit Diesel S60 12.7L Cylinder Head offers a range of benefits that make it a superior choice for engine performance. Our castings are meticulously engineered, designed, and assembled in the United States, ensuring the highest quality standards. Our cylinder head boasts a 5% increase in nickel content in the casting material, which effectively prevents cracking between the valves. Furthermore, we have enlarged the coolant passages by 30% and reinforced the inner ribs to reduce heat stress. These enhancements significantly reduce the likelihood of costly cylinder head failures. By upgrading to our Enhanced Performance Cylinder Head, you can enjoy peace of mind while hauling across the country, knowing that you have invested in a reliable and durable product. Avoid the risk of purchasing an OE reman cylinder head that is prone to cracking and opt for our superior quality product. Are you tired of your engine's lackluster performance? Do you want to take your vehicle to the next level? Look no further than our Enhanced Performance cylinder head. This upgrade from the standard cylinder head is packed with interior upgrades and features inconel valves that can withstand higher temperatures and pressure. Don't settle for standard valves that are prone to fractures when running at heightened horsepower. Our superior quality Inconel material ensures that your exhaust valves can stand the heat and won't fall prey to corrosion, pitting, and cracking. Investing in our Enhanced Performance cylinder head means investing in the longevity and power of your engine. Don't miss out on the opportunity to take your vehicle to new heights. Upgrade to Enhanced Performance today! Oem Cross Reference # 23523294 , 23525566,23525566B,23525567 ,23526844,660005,660005X,8929620,8929620MG,8929872,D-S60HEAD,DDE23525566,DDER23525566,HDT23525566,HDT23525566VS,N23525566VS,R23525566, ,