{"product_id":"cto-3721x-brake-drum","title":"CTO-3721X BRAKE DRUM (FRONT, 15.00\" X 4\")","description":"\u003cdiv style=\"font-family: Arial, Helvetica, sans-serif; color: #333; line-height: 1.6;\"\u003e\r\n\u003ch3 style=\"background-color: #0055aa; color: #fff; padding: 10px; margin-top: 0; border-radius: 3px;\"\u003eTechnical Specifications\u003c\/h3\u003e\r\n\r\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 13px; border: 1px solid #ddd; margin-bottom: 25px;\"\u003e\r\n\t\u003ctbody\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd; background-color: #f9f9f9; width: 40%;\"\u003e\u003cstrong\u003ePart Type\u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eBrake Drum (Stud Pilot \/ Ball Seat)\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd; background-color: #f9f9f9;\"\u003e\u003cstrong\u003eIndustry Number\u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e3721X, 3721A (Webb 66893)\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd; background-color: #f9f9f9;\"\u003e\u003cstrong\u003eBrake Size\u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e16.5\" x 7\" (Friction Surface)\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd; background-color: #ffeeba;\"\u003e\u003cstrong\u003eMounting Type\u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd; background-color: #ffeeba;\"\u003e\n\u003cstrong\u003eStud Pilot (Ball Seat)\u003c\/strong\u003e\u003cbr\u003e\r\n\t\t\t\u003cem\u003eFeatures chamfered holes for tapered nuts.\u003c\/em\u003e\n\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd; background-color: #f9f9f9;\"\u003e\u003cstrong\u003eBolt Holes\u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e10 Holes\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd; background-color: #f9f9f9;\"\u003e\u003cstrong\u003eBolt Circle\u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e11.25\"\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd; background-color: #f9f9f9;\"\u003e\u003cstrong\u003ePilot Hole\u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e8.78\"\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\u003c\/tbody\u003e\r\n\u003c\/table\u003e\r\n\r\n\u003cdiv style=\"background-color: #fff3cd; color: #856404; border: 1px solid #ffeeba; padding: 15px; margin-bottom: 25px; border-radius: 4px;\"\u003e\n\u003cstrong\u003e⚠️ CRITICAL SAFETY WARNING: 3721X vs. 3600AX\u003c\/strong\u003e\u003cbr\u003e\r\nDo not confuse these drums. They look similar but mount differently:\r\n\u003cul style=\"margin-bottom: 0;\"\u003e\r\n\t\u003cli\u003e\n\u003cstrong\u003e3721X (This Part):\u003c\/strong\u003e Stud Pilot. Holes have a \u003cstrong\u003echamfer (bevel)\u003c\/strong\u003e. Must use tapered nuts (Capuchón).\u003c\/li\u003e\r\n\t\u003cli\u003e\n\u003cstrong\u003e3600AX (Modern):\u003c\/strong\u003e Hub Pilot. Holes are \u003cstrong\u003eflat\u003c\/strong\u003e. Must use flat washer nuts.\u003c\/li\u003e\r\n\t\u003cli\u003e\u003cem\u003eMixing them will cause wheel detachment.\u003c\/em\u003e\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003c\/div\u003e\r\n\r\n\u003ch3 style=\"background-color: #0055aa; color: #fff; padding: 10px; margin-top: 0; border-radius: 3px;\"\u003eCross References\u003c\/h3\u003e\r\n\r\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 13px; border: 1px solid #ddd; margin-bottom: 25px;\"\u003e\r\n\t\u003cthead\u003e\r\n\t\t\u003ctr style=\"background-color: #0055aa; color: #ffffff; text-align: left;\"\u003e\r\n\t\t\t\u003cth style=\"padding: 8px; border: 1px solid #004488;\"\u003eBrand\u003c\/th\u003e\r\n\t\t\t\u003cth style=\"padding: 8px; border: 1px solid #004488;\"\u003ePart Number\u003c\/th\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\u003c\/thead\u003e\r\n\t\u003ctbody\u003e\r\n\t\t\u003ctr style=\"background-color: #E6F3FF;\"\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eCTO\u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eCTO-3721X\u003c\/strong\u003e\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eAutomann\u003c\/td\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e145.3721AX\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eConMet\u003c\/td\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e10009920\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eDurabrake\u003c\/td\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e3721AX\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eFleetrite\u003c\/td\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eFLT3721AX\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eGunite (Accuride)\u003c\/td\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e3721AX (Balanced), 3721A\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eKIC\u003c\/td\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e60000\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eMeritor\u003c\/td\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e85-123205\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eWebb Wheel\u003c\/td\u003e\r\n\t\t\t\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e66893 (Current Standard)\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\u003c\/tbody\u003e\r\n\u003c\/table\u003e\r\n\r\n\u003ch3 style=\"background-color: #0055aa; color: #fff; padding: 10px; margin-top: 0; border-radius: 3px;\"\u003eShoe Compatibility \u0026amp; Selection Guide\u003c\/h3\u003e\r\n\r\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 13px; border: 1px solid #ddd;\"\u003e\r\n\t\u003ctbody\u003e\r\n\t\t\u003ctr style=\"background-color: #f2f2f2;\"\u003e\r\n\t\t\t\u003ctd colspan=\"2\" style=\"padding: 8px; border: 1px solid #ddd; font-weight: bold;\"\u003eCompatible 16.5\" x 7\" Shoes\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr\u003e\r\n\t\t\t\u003ctd colspan=\"2\" style=\"padding: 8px; border: 1px solid #ddd;\"\u003eWorks with standard 16.5x7 shoes. Commonly paired with:\r\n\t\t\t\u003cul style=\"margin: 0 0 0 20px; padding: 0;\"\u003e\r\n\t\t\t\t\u003cli\u003e\n\u003cstrong\u003e4515\u003c\/strong\u003e (Old Meritor Q) - Very common on older trucks that use this drum.\u003c\/li\u003e\r\n\t\t\t\t\u003cli\u003e\n\u003cstrong\u003e4707\u003c\/strong\u003e (Meritor Q Plus).\u003c\/li\u003e\r\n\t\t\t\u003c\/ul\u003e\r\n\t\t\t\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\t\u003ctr style=\"background-color: #eef6ff;\"\u003e\r\n\t\t\t\u003ctd colspan=\"2\" style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\n\u003cstrong\u003e???? THE GOLDEN RULE OF SELECTION:\u003c\/strong\u003e\u003cbr\u003e\r\n\t\t\tLook at the wheel nuts on the truck:\r\n\t\t\t\u003cul\u003e\r\n\t\t\t\t\u003cli\u003eDo you use \u003cstrong\u003eFlat Washer Nuts\u003c\/strong\u003e? -\u0026gt; You need \u003cstrong\u003e3600AX\u003c\/strong\u003e.\u003c\/li\u003e\r\n\t\t\t\t\u003cli\u003eDo you use \u003cstrong\u003eTapered Cap Nuts (Capuchón)\u003c\/strong\u003e ? -\u0026gt; You need \u003cstrong\u003e3721X (This Part)\u003c\/strong\u003e.\u003c\/li\u003e\r\n\t\t\t\u003c\/ul\u003e\r\n\t\t\t\u003c\/td\u003e\r\n\t\t\u003c\/tr\u003e\r\n\t\u003c\/tbody\u003e\r\n\u003c\/table\u003e\r\n\u003c\/div\u003e\r\n","brand":"CTO","offers":[{"title":"Default Title","offer_id":51587242918199,"sku":"CTO-3721X","price":151.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0863\/1861\/2791\/files\/2433_unnamed-1017.jpg?v=1768611881","url":"https:\/\/www.cto-usa.com\/es\/products\/cto-3721x-brake-drum","provider":"COMMERCIAL TRUCKS OUTLET ","version":"1.0","type":"link"}