[Compatible Models]: Hydraulic power steering rack and pinion assembly compatible with Chevy Silverado 1500 2000 4.8L, Silverado 1500 2003 2005 5.3L, GMC Sierra 1500 2000 2006 5.3L, Sierra 1500 2001 4.8L, Sierra 1500 2005 6.0L. [Reference Number]: Rack and pinion steering assembly OE number 22-1000, 2015, 221000, 88963415, 19133675, 26079794, 26091958, 26087761, 26101929. [Specifications]: Package included - Hydraulic power rack and pinion assembly with inner tie rods. ①Rack Length: 50.66 Inch; ②Thread Length: 2.59 Inch; ③Input Shaft Length: 1.93 Inch; ④Input Shaft Diameter: 0.78 Inch; ⑤Pressure Port Thread Size: M18 x 1.5; ⑥Return Port Thread Size: M16 x 1.5; [High Verticality]: The worm gear in KAX's rack and pinion steering system is made from high-strength alloy steel and processed with high-precision CNC machining, ensuring excellent vertical alignment in the helical gear system. Even after prolonged use, there is no play in the rack and pinion, resulting in more stable steering and enhanced driving safety. [Professional Made]: Our automotive replacement rack and pinion manufactured in strict accordance with the original factory standards, with stable performance, excellent workmanship, strict factory quality control testing, professional manufacturing, high performance and high reliability. Built to last over 120,000 miles, with a 24-month unlimited mileage guarantee for peace of mind.