Cardone engineered [cse] technology ensures that All Cardone new rack and pinion units meet or exceed O.E.M. Performance. Cse technology is based on over 40 years of reverse-engineering expertise, where original design weaknesses are identified and improved, resulting in premium-quality, brand-new parts you can rely on. All units adhere to strict S.A.E. Specifications and are 100% tested to ensure reliable, long-lasting performance.