[Compatible Models]: Hydraulic power steering rack and pinion assembly compatible with Lexus 2001 2002 2003 2004 2005 IS300 All Models. [Reference Number]: Rack and pinion steering assembly OE number 26-2622, 262622, 4425053020, 4420053051, 4425053050, 4550329785. [Specifications]: Package included - Hydraulic power rack and pinion assembly with inner tie rods. ①Thread Length: 51.56mm; ②Rack Length: 1143mm; ③Input Shaft Diameter: 18.95mm; ④Input Shaft Length: 50.8mm; ⑤Pressure Port Thread Size: M16 x 1.5; ⑥Return Port Thread Size: M17 x 1.5. [High Verticality]: The rack and worm gear in the steering rack and pinion are made of high-strength alloy steel processed by high-precision CNC, which ensures the high verticality of the helical gear system, making the steering wheel operation more stable and driving safer. Closely integrated with the vehicle chassis will not produce noise and vibration. [Durable Performance]: PHILTOP steering rack and pinion adopts corrosion-resistant oil seals and lip seals, and butyl rubber sealing covers. The 360°dust cover is fully protected to effectively prevent dust and dirt from entering the rack gear to cause wear and oil leakage, Ensures a service life of more than 120,000 miles. 12-month unlimited mileage guarantee.