{"product_id":"bearing-buddy-42204-stainless-steel-bearing-protector-1-980-inch-hub-diameter-blue-grease-indicator","title":"Bearing Buddy 42204 Stainless Steel Bearing Protector, 1.980 Inch Hub Diameter, Blue Grease Indicator","description":"\u003cp\u003eThe Bearing Buddy 42204 is a pressurized stainless steel bearing protector built to stop the most common cause of trailer breakdowns: water-contaminated wheel bearings. It installs in place of a standard dust cap and uses a spring-loaded piston to hold a steady 3 psi of pressure inside the hub. That constant pressure keeps grease in and pushes water, mud, and road grit out, while a built-in pressure limit prevents overfilling or overpressurizing the hub, which would otherwise damage the inner seal.\u003c\/p\u003e\u003cp\u003eGrease is added directly through a grease fitting in the center of the piston, so bearings can be serviced without removing the unit. A blue lubricant indicator on the piston lets you check grease level at a glance: press the edge of the piston, and if it rocks or moves, the hub is properly filled; if it will not move, it is time to add more grease.\u003c\/p\u003e\u003cp\u003eBuilt entirely from stainless steel, the 42204 resists rust and corrosion in saltwater and other harsh environments and is manufactured in the USA. It fits hubs with a 1.980 inch inside diameter; measure the inside diameter of the trailer hub or the outside diameter of the dust cap before ordering to confirm fit, then tap the unit into place with a wood block and hammer. This is the version without a protective bra cover.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Bearing Buddy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 42204\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStyle:\u003c\/strong\u003e Bearing Protector without Bra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Hub Inside Diameter:\u003c\/strong\u003e 1.980 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearing Number:\u003c\/strong\u003e 1980\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearing Type:\u003c\/strong\u003e Ball Bearing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Lubricant:\u003c\/strong\u003e Grease\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLubricant Indicator:\u003c\/strong\u003e Blue visual indicator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Pressure:\u003c\/strong\u003e 3 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e USA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.9 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 650209422044\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat size hub does the Bearing Buddy 42204 fit?\u003c\/strong\u003e The Bearing Buddy 42204 only fits hubs with a 1.980 inch inside diameter, so measure the inside diameter of your trailer hub or the outside diameter of your current dust cap with a caliper before ordering to confirm a correct fit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Bearing Buddy 42204 made of?\u003c\/strong\u003e It is manufactured from stainless steel, which resists rust and corrosion even in saltwater and other harsh environments, and it is made in the USA.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know when to add more grease?\u003c\/strong\u003e Press the edge of the movable piston on the Bearing Buddy 42204: if it rocks or moves, the hub has enough grease; if the piston does not move at all, it is time to add more grease through the center grease fitting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much pressure does the bearing protector maintain?\u003c\/strong\u003e A spring-loaded piston inside the 42204 holds a steady 3 psi of pressure, which is enough to keep grease in and water, mud, and dust out without overpressurizing the hub.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan overfilling this bearing protector damage the hub seal?\u003c\/strong\u003e No, the Bearing Buddy 42204 limits internal pressure to 3 psi specifically to prevent overfilling and overpressurization, which is the condition that damages the inner seal on a hub.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this version include a protective bra cover?\u003c\/strong\u003e No, the 42204 is the version without a bra; it is the bearing protector unit only.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the Bearing Buddy 42204 installed?\u003c\/strong\u003e After confirming the 1.980 inch hub inside diameter fits, the unit is tapped into place over the hub using a wood block and a hammer; no special tools are required.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat weight and bearing number apply to this part?\u003c\/strong\u003e The Bearing Buddy 42204 weighs 0.9 pounds and is built around bearing number 1980 with a ball bearing type.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does the blue indicator on the piston mean?\u003c\/strong\u003e The blue lubricant indicator is a built-in visual cue on the piston face that lets you check grease fill level without disassembling the unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Bearing Buddy 42204 just a dust cap replacement?\u003c\/strong\u003e It is more than a dust cap: the 42204 is a pressurized bearing cover and protector system that actively holds grease in and blocks out water and dirt, rather than simply capping the hub opening.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of lubricant does this bearing protector use?\u003c\/strong\u003e The Bearing Buddy 42204 is designed to be serviced with standard grease, added through the grease fitting in the center of the piston.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat applications is the Bearing Buddy 42204 used on?\u003c\/strong\u003e It is used on trailer hubs to protect wheel bearings, including boat trailers, horse trailers, RVs, and utility trailers, provided the hub matches the 1.980 inch inside diameter.\u003c\/p\u003e","brand":"Bearing Buddy","offers":[{"title":"Default Title","offer_id":49031068614875,"sku":"B-B-42204","price":29.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/71YRdOAFDjL.jpg?v=1785207893","url":"https:\/\/www.goodvibesmarina.com\/products\/bearing-buddy-42204-stainless-steel-bearing-protector-1-980-inch-hub-diameter-blue-grease-indicator","provider":"Good Vibes Marina","version":"1.0","type":"link"}