{"product_id":"engine-radiator-replacement-cu13423-compatible-with-passat-jetta","title":"Engine Radiator Replacement CU13423 Compatible with Passat, Jetta","description":"\u003cp\u003eIn this review the KAX CU13423 engine radiator replacement is evaluated for drivers of several Volkswagen models who need a direct-fit, value-oriented cooling upgrade. The bottom line: this radiator is for owners who want an OE-matching replacement that installs like the original and offers improved heat dissipation, with the strongest selling point being fit and cooling efficiency across compatible Passat, Jetta, and Beetle 1.8T\/2.0T applications. It suits routine radiator failure or preventative replacement when the original shows wear or leaks.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerfect fit:\u003c\/strong\u003e Direct compatibility with specified 2014-2017 Passat 1.8T, 2014-2016 Jetta 1.8T, 2019-2022 Passat, 2018 Passat 2.0T, and Beetle model years ensures a straightforward swap with factory mounting points.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOE numbers \u0026amp; specifications:\u003c\/strong\u003e Matches common OEM identifiers such as CU13423 and 5Q0121253H and provides concrete core dimensions so buyers can confirm fitment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh efficiency core:\u003c\/strong\u003e High-density multi-louver fins and an aluminum core increase heat dissipation area for better cooling under load and stop-start driving.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable materials:\u003c\/strong\u003e Uses aluminum cores with high-grade plastic water tanks designed to resist corrosion and deliver reliable thermal conductivity over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality tested:\u003c\/strong\u003e Each unit is leak-proof and pressure tested and follows IATF16949-aligned processes to improve manufacturing consistency and durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtective packaging:\u003c\/strong\u003e Reinforced shockproof packing with foam and bubble protection reduces the risk of transit damage and deformation on arrival.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis radiator is aimed at Volkswagen owners and independent mechanics who need a like-for-like replacement for failed or aging radiators on supported Passat, Jetta, and Beetle engines. It is well suited to those who prioritize correct fitment, straightforward installation, and improved cooling performance without paying dealer prices.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include drivers who require specialized aftermarket features such as integrated oil coolers not covered by these OE numbers, or buyers unwilling to accept any variability in transmission cooler fittings since a minority of customers reported mixed experiences with those connections.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGood fitment for listed VW models, making installation fast and predictable.\u003c\/li\u003e\n\u003cli\u003eImproved cooling efficiency thanks to multi-louver fins and an aluminum core.\u003c\/li\u003e\n\u003cli\u003eComprehensive testing and reinforced packaging reduce risk of arriving damaged.\u003c\/li\u003e\n\u003cli\u003eTwo-year warranty and after-sales support provide ownership reassurance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSome users reported mixed build quality around transmission cooler fittings, which may require attention during installation.\u003c\/li\u003e\n\u003cli\u003eAs a replacement part, professional installation is recommended for best results.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM \/ Part Numbers\u003c\/td\u003e\n\u003ctd\u003eCU13423, 5Q0121253H, 1K0198251, RAD13422\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCore Thickness\u003c\/td\u003e\n\u003ctd\u003e1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCore Width\u003c\/td\u003e\n\u003ctd\u003e17-5\/8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCore Height\u003c\/td\u003e\n\u003ctd\u003e25-9\/16 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInlet Diameter\u003c\/td\u003e\n\u003ctd\u003e1-1\/4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutlet Diameter\u003c\/td\u003e\n\u003ctd\u003e1-1\/4 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuality Standard\u003c\/td\u003e\n\u003ctd\u003eIATF16949-aligned testing and leak\/pressure tests\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe KAX CU13423 radiator is a practical, cost-effective replacement for supported Passat, Jetta, and Beetle engines; it delivers reliable cooling performance, true-to-OE fit, and sensible durability testing. Buyers who need a direct OEM-matching radiator and want value for money will find it a solid choice, though installers should check transmission cooler connections during fitment.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this radiator fit my vehicle?\u003c\/strong\u003e\u003cbr\u003eCheck the listed model years and engine types; confirm with the vehicle fitment tool or VIN to ensure compatibility with your specific Passat, Jetta, or Beetle.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it include warranty support?\u003c\/strong\u003e\u003cbr\u003eYes, the product comes with a two-year quality assurance and manufacturer after-sales support for issues arising from production or defects.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs professional installation required?\u003c\/strong\u003e\u003cbr\u003eProfessional installation is recommended to ensure proper connection of transmission cooler fittings and to prevent leaks, though many owners report straightforward installs.\u003c\/p\u003e","brand":"KAX","offers":[{"title":"Default Title","offer_id":48187134378203,"sku":"B0FCRZ198N","price":91.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/816e8ZBG6GL._AC_SL1500.jpg?v=1769523832","url":"https:\/\/gearmusthave.com\/products\/engine-radiator-replacement-cu13423-compatible-with-passat-jetta","provider":"GearMustHave","version":"1.0","type":"link"}