Features: Precisions engineered seat height adjustment valves with advanced hydraulic technology ensures accurate seat positioning and tilt control. Constructed from corrosion resistant steel and wear resistant plastic, this control valves features multiple layered sealing to prevent oil leaks while withstanding 2000N pressure for long term durability. Ideal for truck drivers and commercial vehicle repair shops requiring reliable, ergonomic seat adjustment mechanisms in transportation environments. Optimized for quick 5 second seat height adjustments during extended driving or emergency maneuvers, featuring antislip grip for effortlessly operation even with gloves. Direct replacement part (20748450) manufactured to strict standards, ensuring perfect fitment and enhanced system efficiency for truck seat assemblies. Specifications: Component:ABS Part number: 20748450 20443641 0009107238 7420748450 1847100 2133705 103126 111868 20443641 20586535 4057795299993 81623986071 36781150002 5001857854 5001857854S1 297008 Applicable models: Suitable for 1831 1831L 1831AK 1831S 1831LS 1835L 1835AK 1835K 1835S 1835LS 1840 1840L 1840AK 1840K 1840S 1840LS, IRISBUS, MAN NG313 NG323 NG353 NG363 NL243 NL273 NL283 NL313 NL323 NM243 NM253 NM283 NM293 UL313 UL353, Note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item. Package includes: 1Set Seat Repair Control valves