{"product_id":"397a-in-store-pickup-only-bearing-2-25-id-fits-382a-10k-gd-inner-10k-hd-outer-397a","title":"Trailer Bearing Cone – 2.25\" ID – Fits 382A Race, 10K GD Inner \u0026 10K HD Outer Hub Applications (387A)","description":"\u003cstyle\u003e\n  .rp-mag-lock{\n    --rp-black:#111111;\n    --rp-charcoal:#1d1d1f;\n    --rp-gray:#6b7280;\n    --rp-light:#f5f5f5;\n    --rp-line:#d8d8d8;\n    --rp-maroon:#6e0f11;\n    --rp-gold:#d7a126;\n    --rp-cream:#fff7e3;\n    --rp-shadow:0 16px 36px rgba(0,0,0,.08);\n    --rp-radius:20px;\n    font-family:\"Helvetica Neue\",Helvetica,Arial,sans-serif;\n    color:var(--rp-black);\n    line-height:1.6;\n  }\n\n  .rp-mag-lock *{\n    box-sizing:border-box;\n  }\n\n  .rp-mag-lock .rp-shell{\n    max-width:1080px;\n    margin:0 auto;\n    padding:28px 18px 40px 18px;\n    background:linear-gradient(180deg,#fafafa 0%,#ffffff 22%,#ffffff 100%);\n  }\n\n  .rp-mag-lock .rp-hero{\n    position:relative;\n    overflow:hidden;\n    border:1px solid 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src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2659\/6148\/files\/LOGO-FINALx200.png?v=1763669885\" alt=\"R \u0026amp; P Carriages\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"rp-kicker\"\u003eTrailer Bearing • Heavy Axle Hub Service\u003c\/div\u003e\n\u003ch1 class=\"rp-title\"\u003eTrailer Bearing Cone – 2.25\" ID – Fits 382A Race, 10K GD Inner \u0026amp; 10K HD Outer Hub Applications\u003c\/h1\u003e\n\u003cp class=\"rp-subhead\"\u003eReplacement tapered roller bearing cone for compatible heavy trailer hub applications using bearing number 387A. Commonly referenced for 10K General Duty inner bearing use and 10K Heavy Duty outer bearing use where the hub, spindle, and race specifications match.\u003c\/p\u003e\n\u003cdiv class=\"rp-partline\"\u003e\n\u003cspan class=\"rp-badge\"\u003eSKU: 387A\u003c\/span\u003e \u003cspan class=\"rp-badge alt\"\u003e2.250\" Inner Diameter\u003c\/span\u003e \u003cspan class=\"rp-badge alt\"\u003eBearing Cone Only\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- TOP BUYER DECISION PANEL --\u003e\n\u003cdiv class=\"rp-section rp-top-decision rp-grid-3\"\u003e\n\u003c!-- KEY MEASUREMENTS \u0026 SPECS --\u003e\n\u003cdiv class=\"rp-sticky-card\"\u003e\n\u003cdiv class=\"rp-rule-title\"\u003e\n\u003ch2\u003eKey Measurements \u0026amp; Specs\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number \/ SKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e387A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTapered roller bearing cone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInner Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.250\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMatching Race\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e382A race\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommon Position\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10K GD inner \/ 10K HD outer where 387A is specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 bearing cone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- FITMENT \/ APPLICATION --\u003e\n\u003cdiv class=\"rp-sticky-card\"\u003e\n\u003cdiv class=\"rp-rule-title\"\u003e\n\u003ch2\u003eFitment \/ Application\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrailer System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeavy trailer hub and axle bearing service\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrimary Fit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFits hubs requiring bearing number 387A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRace Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUsed with matching 382A race\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFitment Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVerify stamped bearing number, race number, spindle journal size, and hub application before ordering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eImportant Note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApplication references are fitment guides only. Match the existing bearing and race numbers before installation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- TOP FEATURES --\u003e\n\u003cdiv class=\"rp-sticky-card\"\u003e\n\u003cdiv class=\"rp-rule-title\"\u003e\n\u003ch2\u003eTop Features\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eBuyer Benefit\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e387A Bearing Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHelps match the replacement bearing to the stamped number on the original component\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e2.250\" ID\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDesigned for compatible spindle journals requiring a 2.25\" bearing bore\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e382A Race Match\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePairs with the common 382A race when replacing bearing and race together\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeavy Trailer Use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSuitable for compatible heavy axle hub service where 387A is specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- OVERVIEW + SERVICE INSIGHT --\u003e\n\u003cdiv class=\"rp-section rp-grid-2\"\u003e\n\u003cdiv class=\"rp-card\"\u003e\n\u003cdiv class=\"rp-rule-title\"\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cp class=\"rp-lead\"\u003eThis listing is for one 387A tapered roller bearing cone with a 2.250\" inner diameter. It is commonly used in heavy trailer hub applications, including compatible 10K General Duty inner bearing positions and 10K Heavy Duty outer bearing positions where the hub and spindle require bearing number 387A. The matching 382A race is sold separately unless purchased as part of a complete bearing and race kit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-card rp-service\"\u003e\n\u003ch2\u003eR\u0026amp;P Service Insight\u003c\/h2\u003e\n\u003cp\u003eBearing fitment should be confirmed by the actual bearing number and race number removed from the hub, not by axle capacity alone. Heavy trailer hubs can use different inner and outer bearing combinations depending on axle series, hub number, spindle, and production configuration.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatch the Numbers:\u003c\/strong\u003e Confirm the existing bearing is stamped 387A before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck the Race:\u003c\/strong\u003e If the race is worn, pitted, grooved, or discolored, replace the matching 382A race at the same time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspect Before Reassembly:\u003c\/strong\u003e Check the spindle journal, seal surface, hub bore, and lubrication condition before installing the new bearing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- KNOWLEDGE HUB --\u003e\n\u003cdiv class=\"rp-section\"\u003e\n\u003cdiv class=\"rp-card rp-knowledge\"\u003e\n\u003ch2\u003eR\u0026amp;P Knowledge Hub\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e This bearing is intended for applications requiring bearing number 387A and a 2.250\" bearing bore. Verify before ordering if your trailer has been modified, repaired previously, or fitted with non-original hubs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTrailer \/ Axle Fit:\u003c\/strong\u003e Commonly referenced for heavy trailer axle hub service, including 10K General Duty inner bearing applications and 10K Heavy Duty outer bearing applications where 387A is specified.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Notes:\u003c\/strong\u003e Bearings should be installed clean, properly lubricated, and adjusted according to the hub and axle service requirements. Do not reuse a damaged race with a new bearing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePerformance Insight:\u003c\/strong\u003e Correct bearing and race matching is critical for hub temperature control, load support, and long service life. A close-looking but incorrect bearing can cause premature wear or hub failure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- BRAND \u0026 FITMENT NOTE --\u003e\n\u003cdiv class=\"rp-section\"\u003e\n\u003cdiv class=\"rp-card rp-knowledge\"\u003e\n\u003ch2\u003eBrand \u0026amp; Fitment Note\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eSelling Brand:\u003c\/strong\u003e R\u0026amp;P Carriages aftermarket replacement trailer bearing\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eApplication Reference:\u003c\/strong\u003e Dexter, 10K General Duty, 10K Heavy Duty, and hub-number references are used only as compatibility and application guides where the 387A bearing number and 382A race match the customer’s existing setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat This Means:\u003c\/strong\u003e This listing is for one replacement 387A bearing cone, not a complete bearing kit and not a guaranteed OEM-branded item unless specifically stated on the product packaging.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBefore Ordering:\u003c\/strong\u003e Verify the bearing number, matching race number, spindle size, hub number, inner\/outer bearing position, and quantity needed before installation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- REPAIR INSIGHT --\u003e\n\u003cdiv class=\"rp-section\"\u003e\n\u003cdiv class=\"rp-card rp-service\"\u003e\n\u003ch2\u003eR\u0026amp;P Repair Insight\u003c\/h2\u003e\n\u003cp\u003eWhen servicing heavy trailer hubs, replace parts based on measured condition and stamped part numbers. A failed bearing may also indicate lubrication loss, seal failure, improper adjustment, water intrusion, or race damage.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace Condition:\u003c\/strong\u003e Replace the 382A race if there is scoring, pitting, heat discoloration, or uneven wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal Check:\u003c\/strong\u003e Inspect the hub seal and seal riding surface, especially on oil bath or heavy-duty hub assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustment Check:\u003c\/strong\u003e After installation, adjust bearing preload\/endplay according to the axle and hub service procedure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- FEATURES --\u003e\n\u003cdiv class=\"rp-section\"\u003e\n\u003cdiv class=\"rp-rule-title\"\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-feature-grid\"\u003e\n\u003cdiv class=\"rp-feature\"\u003e\n\u003ch3\u003e387A Replacement Bearing\u003c\/h3\u003e\n\u003cp\u003eReplacement tapered roller bearing cone for hubs that require bearing number 387A.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-feature\"\u003e\n\u003ch3\u003e2.250\" Inner Diameter\u003c\/h3\u003e\n\u003cp\u003eFits compatible spindle journals requiring a 2.25\" bearing bore.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-feature\"\u003e\n\u003ch3\u003ePairs With 382A Race\u003c\/h3\u003e\n\u003cp\u003eDesigned to run with a matching 382A bearing race when the race is also being replaced.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-feature\"\u003e\n\u003ch3\u003eHeavy Trailer Hub Application\u003c\/h3\u003e\n\u003cp\u003eCommonly used in compatible 10K trailer axle hub service positions where 387A is specified.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- INCLUDED COMPONENTS --\u003e\n\u003cdiv class=\"rp-section\"\u003e\n\u003cdiv class=\"rp-rule-title\"\u003e\n\u003ch2\u003eIncluded Components\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003cth\u003eItem\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e387A tapered roller bearing cone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNot Included\u003c\/td\u003e\n\u003ctd\u003e382A race, seal, washer, nut, cotter pin, oil cap, grease, or other hub hardware\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- FINAL VERIFICATION NOTE --\u003e\n\u003cdiv class=\"rp-note\"\u003e\n\u003cstrong\u003eImportant Fitment Note:\u003c\/strong\u003e Verify all bearing numbers, race numbers, hub specifications, spindle measurements, axle series, inner\/outer bearing position, and included components before installation. Application names and axle-capacity references are compatibility guides only and do not replace matching the stamped bearing and race numbers.\u003c\/div\u003e\n\u003c!-- CTA --\u003e\n\u003cdiv class=\"rp-cta-wrap\"\u003e\u003ca class=\"rp-btn\" href=\"\/search?q=387A\"\u003eShop Matching Bearing Parts\u003c\/a\u003e\u003c\/div\u003e\n\u003c!-- SEO BLOCK --\u003e\n\u003cdiv class=\"rp-seo\"\u003e387A bearing, 387A trailer bearing, 387A tapered roller bearing, 2.25 inch ID bearing, 2.250 inner diameter trailer bearing, 382A race compatible bearing, 10K GD inner bearing, 10K General Duty bearing, 10K HD outer bearing, heavy trailer hub bearing, trailer axle bearing cone, replacement trailer wheel bearing 387A\u003c\/div\u003e\n\u003c!-- FOOTER --\u003e\n\u003cdiv class=\"rp-footer\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2659\/6148\/files\/Baseball_AdvertisingRP-sign_1.jpg?v=1771533480\" alt=\"R \u0026amp; P Carriages\"\u003e\u003c\/div\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #eee; margin: 24px 0 0 0;\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TRP","offers":[{"title":"Default Title","offer_id":49048693178654,"sku":"387A","price":5.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2659\/6148\/files\/387A.jpg?v=1782223329","url":"https:\/\/needatrailerpart.com\/products\/397a-in-store-pickup-only-bearing-2-25-id-fits-382a-10k-gd-inner-10k-hd-outer-397a","provider":"Need a Trailer Part","version":"1.0","type":"link"}