{"product_id":"air-spring-bag-for-hendrickson-trailers-durable-replacement-part","title":"Air Spring Bag for Hendrickson Trailers - Durable Replacement Part","description":"\u003cp\u003eIn this review of the Air Spring Bag for Hendrickson Axle Trailers, the bottom line is straightforward: this replacement is built for fleets and technicians who need a robust, direct-fit air spring that matches common Hendrickson part numbers. The reviewer found the kit's strongest selling point is its combination of heavy-duty construction and precise dimensions, which make installation predictable when the correct part number is confirmed. This review highlights compatibility, material quality, and practical fit details so a buyer can decide quickly whether this is the right suspension part for their trailer.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits common Hendrickson and aftermarket part numbers including W01-358-9978, C-28929, S-28929 and several AS\/HD variants, reducing the risk of ordering the wrong item when matched to your trailer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial quality:\u003c\/strong\u003e Constructed from 4.5-5.00mm high density rubber that exceeds OEM thickness expectations, offering strong resistance to wear and environmental exposure for longer service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReinforced hardware:\u003c\/strong\u003e Uses 4140 grade steel studs that are 25% stronger than comparable studs, which improves mounting durability under heavy loads and repeated cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTested for leakage:\u003c\/strong\u003e Each spring bag is tested for maximum leakage, providing confidence in airtight performance and reducing the likelihood of premature failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear dimensions:\u003c\/strong\u003e Published top plate width, piston width and compressed\/extended heights help ensure proper fitment during replacement and simplify cross-checking with the trailer specification.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis air spring bag is aimed at fleet maintenance teams, independent trailer repair shops and owners of Hendrickson axle-equipped trailers who need a reliable, direct replacement for the listed part numbers. The product suits those who prefer to verify fit by dimensions and part reference before ordering to avoid downtime.\u003c\/p\u003e\n\u003cp\u003eIt is less appropriate for buyers who cannot confirm the exact part number or those needing custom or vehicle-specific engineered suspension solutions beyond the stated compatibility. If a precise OEM cross-reference cannot be matched, shoppers should seek guidance before purchase.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy-duty rubber construction gives improved durability over thinner alternatives.\u003c\/li\u003e\n\u003cli\u003eReinforced 4140 grade steel studs reduce the risk of stud failure under load.\u003c\/li\u003e\n\u003cli\u003eFully tested for leakage, which helps ensure reliable air retention in service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRequires careful part number and dimension verification before purchase to ensure a perfect fit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSTILEALUS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTop Plate Width\u003c\/td\u003e\n\u003ctd\u003e9.00 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePiston Width\u003c\/td\u003e\n\u003ctd\u003e10.16 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompressed Height\u003c\/td\u003e\n\u003ctd\u003e7.90 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExtended Height\u003c\/td\u003e\n\u003ctd\u003e18.00 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e15.10 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e3 Year Unlimited-mileage Quality Guarantee\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Air Spring Bag for Hendrickson trailers is a practical, value-oriented replacement for users who can confirm the fit by part number or dimensions. With thicker rubber, reinforced studs and leakage testing, it offers tangible durability benefits for heavy-duty use. Purchase it when the compatibility matches, and it will serve as a dependable replacement without the premium cost of OEM-branded parts.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this fit my Hendrickson axle?\u003c\/strong\u003e\u003cbr\u003eCheck the exact part number and compare the listed dimensions; it fits W01-358-9978, C-28929, S-28929 and several AS\/HD variants when the specs match.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow durable is the construction?\u003c\/strong\u003e\u003cbr\u003eThe bag uses 4.5-5.00mm high density rubber and 4140 grade steel studs reinforced by 25% for improved durability over standard replacements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat warranty is included?\u003c\/strong\u003e\u003cbr\u003eThe product includes a 3 year unlimited-mileage quality guarantee; contact the seller for warranty service or questions.\u003c\/p\u003e","brand":"STILEALUS","offers":[{"title":"Default Title","offer_id":48684689424603,"sku":"B0FBF9Q13C","price":80.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61-5kGGivDL._AC_SL1500.jpg?v=1778720309","url":"https:\/\/gearmusthave.com\/products\/air-spring-bag-for-hendrickson-trailers-durable-replacement-part","provider":"GearMustHave","version":"1.0","type":"link"}