{"product_id":"air-conditioning-conversion-kit-for-john-deere-4040-4230-4240-4430-a6-to-sanden","title":"Air Conditioning Conversion Kit for John Deere 4040, 4230, 4240, 4430 - A6 to Sanden, 990-404K","description":"\u003cp\u003eReplace your aging A6 compressor with a \u003cstrong\u003emodern Sanden-style A\/C system\u003c\/strong\u003e using this complete conversion kit from AP Air. The 990-404K covers one of the broadest fitment ranges in the John Deere lineup — spanning both classic row-crop tractors and large combines — and includes everything needed for a clean, reliable installation.\u003c\/p\u003e\n\u003ch2\u003eWhat's Included (SKU: QFS-990-404K)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSanden-Style Conversion Kit\u003c\/strong\u003e — replaces the original A6 piston compressor with a lightweight, efficient rotary unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReceiver Drier\u003c\/strong\u003e — new desiccant to keep moisture out of the system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpansion Valve\u003c\/strong\u003e — controls refrigerant flow for optimal cooling performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eO-Ring Kit\u003c\/strong\u003e — all seals needed for a leak-free, R134a-compatible installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDesigned to use your original belt and hoses\u003c\/strong\u003e — no custom fabrication or hose rerouting required.\u003c\/p\u003e\n\u003ch2\u003eCompatible John Deere Models\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCombines:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eJohn Deere 6620\u003c\/li\u003e\n\u003cli\u003eJohn Deere 7720\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTractors:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eJohn Deere 4040 \u0026amp; 4040 Euro\u003c\/li\u003e\n\u003cli\u003eJohn Deere 4230\u003c\/li\u003e\n\u003cli\u003eJohn Deere 4240, 4240 Euro \u0026amp; 4240S\u003c\/li\u003e\n\u003cli\u003eJohn Deere 4350\u003c\/li\u003e\n\u003cli\u003eJohn Deere 4430\u003c\/li\u003e\n\u003cli\u003eJohn Deere 4440 \u0026amp; 4440 Euro\u003c\/li\u003e\n\u003cli\u003eJohn Deere 4630\u003c\/li\u003e\n\u003cli\u003eJohn Deere 8430 4WD\u003c\/li\u003e\n\u003cli\u003eJohn Deere 8440\u003c\/li\u003e\n\u003cli\u003eJohn Deere 8630\u003c\/li\u003e\n\u003cli\u003eJohn Deere 8640\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Upgrade from the A6 Compressor?\u003c\/h2\u003e\n\u003cp\u003eThe original A6 piston compressor is heavy, inefficient, and increasingly difficult to find parts for. The Sanden-style rotary compressor offers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLess engine load\u003c\/strong\u003e — lighter weight means less parasitic drag\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBetter cooling efficiency\u003c\/strong\u003e — especially at low RPMs during field work\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eR134a compatibility\u003c\/strong\u003e — works with the modern, readily available refrigerant standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidely serviceable\u003c\/strong\u003e — any shop with modern A\/C equipment can service a Sanden-style system\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFlush the system before installing to remove residual mineral oil from the old A6 system\u003c\/li\u003e\n\u003cli\u003eUse \u003cstrong\u003ePAG oil\u003c\/strong\u003e specified for the Sanden compressor — do not mix with old mineral oil\u003c\/li\u003e\n\u003cli\u003eReplace all O-rings with \u003cstrong\u003eHNBR (green) O-rings\u003c\/strong\u003e rated for R134a (included in kit)\u003c\/li\u003e\n\u003cli\u003eHave the system professionally evacuated and recharged with \u003cstrong\u003eR134a refrigerant\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AP AIR INC","offers":[{"title":"Default Title","offer_id":46335342280870,"sku":"QFS-990-404K","price":425.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0331\/0790\/2595\/files\/QFS-990-404K_optimized.jpg?v=1772215697","url":"https:\/\/www.qualityfarmsupply.com\/products\/air-conditioning-conversion-kit-for-john-deere-4040-4230-4240-4430-a6-to-sanden","provider":"Quality Farm Supply","version":"1.0","type":"link"}