{"product_id":"fits-john-deere-crawler-dozer-track-adjuster-valve-at159554-450-450b-450c-550-55","title":"Fits John Deere Crawler dozer track adjuster VALVE AT159554 450 450b 450c 550 55","description":"\u003ch3\u003eOne New Aftermarket Replacement Track Adjuster Check Valve Fits John Deere (Fits JD) Crawler Dozers and Loaders\u003c\/h3\u003e\u003cp\u003eThis aftermarket replacement check valve screws into the track adjuster assembly and controls grease flow into the track tensioner on Fits John Deere (Fits JD) crawler dozers and loaders. Over time, the internal seat on these valves wears and no longer seals properly, preventing grease from reaching the tensioner -- replacement restores correct track tension adjustment. The valve accepts a standard grease fitting at the inlet for easy service access.\u003c\/p\u003e\u003ch4\u003eCompatible Models\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eFits John Deere Crawler Dozers:\u003c\/strong\u003e 450, 450B, 450C, 450D, 550, 550A, 555, 555A, 700H, 700J, 700J-II, 700K, 750C, 850C\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFits John Deere Crawler Dozers (G-Series):\u003c\/strong\u003e 450G, 455G, 550G, 555G, 650G\u003c\/p\u003e\u003ch4\u003eReplaces Part Number(s):\u003c\/h4\u003e\u003cp\u003eAT159554, AT159554-A, UNU20-0021\u003c\/p\u003e\u003cp\u003eNew aftermarket replacement part - not remanufactured, not used.\u003c\/p\u003e","brand":"AIC Replacement Parts","offers":[{"title":"Default Title","offer_id":44183519953076,"sku":"UNU20-0021","price":78.53,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0249\/8782\/8310\/files\/UNU20-0021_01.jpg?v=1777065539","url":"https:\/\/www.aicreplacementparts.com\/products\/fits-john-deere-crawler-dozer-track-adjuster-valve-at159554-450-450b-450c-550-55","provider":"AIC Replacement Parts","version":"1.0","type":"link"}