{"product_id":"oem-goodman-rubber-coupling-drain-hose-for-gun100-4-furnace-b1810400","title":"OEM Goodman Rubber Coupling Drain Hose for GUN100-4 Furnace — B1810400","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1810400 Rubber Coupling\u003c\/strong\u003e is a genuine OEM connector used to join drain, condensate, or inducer\/vent hose sections on the \u003cstrong\u003eGUN100-4\u003c\/strong\u003e gas furnace and related GUN100 series units. Over time, rubber couplings harden, crack, and split — leading to condensate leaks, pressure-switch faults, and nuisance lockouts. Replacing a worn coupling with the correct OEM part restores a sealed, leak-free connection.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e B1810400\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Heat- and moisture-resistant rubber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Hose\/tube coupling connector\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman GUN100-4 and GUN100 series furnaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Sealed connection for drain\/condensate\/vent tubing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eGoodman OEM coupling\u003c\/strong\u003e is molded to the exact inner diameter and durometer required for a proper interference-fit seal on your furnace's tubing. Generic rubber couplings from a hardware store may be the wrong bore size or a softer compound that degrades faster in the furnace's warm, humid environment — a common cause of repeat leaks.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eVery Easy (1\/5).\u003c\/strong\u003e A quick, tool-light swap: slide off the old coupling, clean the tube ends, and press the new one into place (clamps if originally equipped). No electrical work required.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058188992883,"sku":"GOODMAN-13151","price":6.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-rubber-coupling-drain-hose-for-gun100-4-furnace-b1810400","provider":"National HVAC Parts","version":"1.0","type":"link"}