{"product_id":"radhlbniu-ad9-air-dryer-purge-valve-with-heater-direct-replacement-for-bendix-5004341-800405-includes-screws-silicone-grease","title":"RADHLBNIU AD9 Air Dryer Purge Valve with Heater - Direct Replacement for Bendix 5004341\/800405, Includes Screws \u0026 Silicone Grease","description":"\u003cstrong\u003eRADHLBNIU AD9 Air Dryer purge valve with integrated heater is a direct-fit replacement for Bendix 5004341 \/ 800405 designed to restore reliable purge and moisture control in AD-9 air dryer systems.\u003c\/strong\u003e\n\n\u003cp\u003eThis replacement purge valve assembly for the AD-9 air dryer includes the heater element and mounting hardware to simplify installation and reduce downtime. It’s intended as a maintenance or repair part for vehicle and fleet pneumatic systems that use Bendix-style AD-9 dryers, matching the original fit and function while coming with silicone grease and screws to complete the job.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this purge valve restore AD-9 air dryer performance?\u003c\/h3\u003e\n\u003cp\u003eReplacing a worn purge valve re-establishes the timed purge cycle that removes condensate and contaminants from the air dryer desiccant cartridge. The integrated heater prevents freeze-ups in cold conditions, so the purge operates reliably through temperature changes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect replacement for Bendix part numbers 5004341 and 800405.\u003c\/li\u003e\n  \u003cli\u003eIncludes heater element to reduce icing risk in low temperatures.\u003c\/li\u003e\n  \u003cli\u003eEngineered to return correct purge timing and vacuum balance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat comes in the box and what tools do I need for installation?\u003c\/h3\u003e\n\u003cp\u003eThe kit ships with the purge valve assembly, three mounting screws and a syringe of silicone grease to lubricate seals during fitting. Typical installation requires basic hand tools and a short vehicle downtime; no specialized calibrations are usually necessary when matching the correct model.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x AD-9 purge valve with heater included in the assembly.\u003c\/li\u003e\n  \u003cli\u003e3 x screws and 1 x silicone grease for immediate installation.\u003c\/li\u003e\n  \u003cli\u003eCommon tools: screwdriver, wrench set, and safety equipment for depressurizing the system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this part fit my air dryer and how to confirm compatibility?\u003c\/h3\u003e\n\u003cp\u003eCompatibility hinges on matching your existing Bendix part number—this RADHLBNIU unit replaces 5004341 and 800405 on AD-9 style dryers. Always verify the part number stamped on your old purge valve or consult your service manual before buying to avoid ordering the wrong item.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCheck the existing purge valve for Bendix 5004341 or 800405 markings.\u003c\/li\u003e\n  \u003cli\u003eCompare mounting holes and electrical connector orientation before installation.\u003c\/li\u003e\n  \u003cli\u003eContact the seller with vehicle or dryer model details if uncertain.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long should I expect this replacement to last and what maintenance helps longevity?\u003c\/h3\u003e\n\u003cp\u003eService life depends on operating conditions, air system maintenance and exposure to contaminants; replacing worn valves typically extends dryer life and prevents costly air system failures. Routine inspections, proper system filtration and seasonal checks of the heater circuit will maximize the unit’s lifespan.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInspect for worn seals, leaks, and heater operation during scheduled maintenance.\u003c\/li\u003e\n  \u003cli\u003eUse recommended filters and purge schedules to minimize contamination.\u003c\/li\u003e\n  \u003cli\u003eReplace promptly if freeze symptoms, irregular purge timing, or vacuum loss appear.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This RADHLBNIU AD9 purge valve with heater suits technicians, fleet maintenance teams, and owners of heavy vehicles using Bendix AD-9 air dryers who need a reliable replacement part that matches Bendix 5004341 \/ 800405. It’s ideal for on-site repairs where quick parts swap, compatibility, and freeze protection are priorities. Please confirm the original part number before purchase to ensure fitment and reach out to the seller for assistance if you have questions about compatibility or installation.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this replace Bendix part 5004341?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This RADHLBNIU AD9 purge valve is a direct replacement for Bendix part 5004341 and 800405.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the heater included and does it prevent freezing?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The heater is built into the assembly to reduce freeze risk, improving purge reliability in cold conditions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"RADHLBNIU","offers":[{"title":"Default Title","offer_id":55163251753303,"sku":"B0C7VFGQ3S","price":33.96,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/radhlbniu-ad9-purge-valve-front-assembly.jpg?v=1790342554","url":"https:\/\/britishgarage.co.uk\/products\/radhlbniu-ad9-air-dryer-purge-valve-with-heater-direct-replacement-for-bendix-5004341-800405-includes-screws-silicone-grease","provider":"British Garage","version":"1.0","type":"link"}