Reference Part Number:  replacement for Firestone W01-358-6897 replacement for ContiTech FD 200 19 505, 64517, FD200-19505 replacement for Goodyear 2B9229, 2B9-229 replacement for Volvo 3098608 Other parts number: fit for Triangle 4505, 6325 for Watson & Chalin  AS-0058, W01W206897 for Brake & Wheel: M3528 for Neway G2296897500 for Ridewell 1003586897C for IHC 2601750C1, 2B9-490   Specification: Top plate screw (nut) teeth: 3/8-16UNF Screw (nut) teeth of the bottom cover plate: 1/2-13UNC Air hole/air inlet: 1/4 NPT Top plate diameter: 160mm / 6.3inch Diameter of the bottom cover: 160mm / 6.3inch Dsign height: 217mm / 8.5inch Intern Jounce Bumper: Not Included Quantity: 2 Pieces Condition: Brand New Material: Natural rubber     Features: 1、Highest leak test ratio: 100% Air Tightness Testing. 2、Tested over 4,000,000 times, most air springs are only tested 1,000,000 times. 3、Temperature Range ≥-40°F/≤158°F: Premium Natural Rubber Material. 4、Exceeds OEM requirements for 4.5-5.0 mm thick rubber. 5、12.9 grade high strength steel studs. 6、Withstand 2Mpa of air pressure before the rubber burst. 7、Careful evaluation of OEM specifications. 8、Strict quality control. 9、Sturdy & Durable Material. 10、Reduces Damage of Trailer, Cab And Truck Body. 11、Reduce driver discomfort and dangerous fatigue, improve driver safety. 12、Allow perfect load equalization between axles. Provide constant-level hauling. 13、Increase life of tires and brake linings. 14、Substantially reduce breakage and maintenance of other vehicle components.   Notice: – These air suspension bags are aftermarket ones. They will replace the original air springs. -Instruction is not included. Professional installation is recommended -Contact us please for whatever we can help   Condition: 100% brand new Warranty: 1-year warranty for any manufactured defect Accessories: You will get exactly as shown in the picture above Our brand is maXpeedingrods, all products made in our own factory with more than 10 years experience