{"product_id":"yeherit-front-coolant-expansion-tank-603-253-for-audi-vw-translucent-polypropylene-direct-fit","title":"YEHERIT Front Coolant Expansion Tank 603-253 for Audi \u0026 VW - Translucent Polypropylene, Direct-Fit","description":"\u003cp\u003e\u003cstrong\u003eYEHERIT 603-253 is a direct-fit pressurized coolant expansion\/reservoir tank engineered to replace worn or cracked tanks on select Audi and Volkswagen models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis replacement coolant reservoir (part number 603-253, compatible with OEM references 1K0121407F and 1K0121407A) offers a durable, lightweight polypropylene construction and a translucent finish so you can monitor antifreeze level at a glance. Designed for a bolt-on swap, it fits many Audi and VW vehicles across multiple model years without modification, making it a practical service part when the original tank leaks, becomes brittle, or fails to hold pressure.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles will this expansion tank fit?\u003c\/h3\u003e\n\u003cp\u003eYEHERIT made this tank to match the mounting points and connections used on a wide range of Audi and Volkswagen models. Confirm fitment by comparing your existing part number or vehicle application before ordering to ensure correct compatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAudi: A3 (2006–2013, incl. Quattro), Q3 (2015–2018), RS3 (2018–2019), TT (2008–2015, incl. Quattro)\u003c\/li\u003e\n  \u003cli\u003eVolkswagen: Beetle (2012–2019), Tiguan (2009–2018), Jetta (2005–2019 variants), Passat (1993–2019), Golf family (2010–2014 and variants)\u003c\/li\u003e\n  \u003cli\u003eMatches OEM numbers: 603-253, 1K0121407F, 1K0121407A\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the YEHERIT tank perform under heat and pressure?\u003c\/h3\u003e\n\u003cp\u003eThe reservoir is molded from heat-resistant polypropylene designed to tolerate the operating temperatures encountered in engine coolant systems. Its pressurized design holds system pressure and reduces coolant loss when compared to degraded stock tanks.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-quality PP material resists cracking from thermal cycling\u003c\/li\u003e\n  \u003cli\u003eTranslucent body makes level checks quick and visual\u003c\/li\u003e\n  \u003cli\u003eEngineered to accept standard coolant cap and hoses without modification\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs installation straightforward for a DIY mechanic?\u003c\/h3\u003e\n\u003cp\u003eYes—this tank is a direct replacement intended to use the same fasteners, mounting tabs, and hose connections as the original unit. Basic tools are normally sufficient, and no custom fabrication is required when matching fitment with the original part.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBolt-on design aligns with factory mounting points\u003c\/li\u003e\n  \u003cli\u003eNo special adapters or seals required when OEM part matches\u003c\/li\u003e\n  \u003cli\u003eReduce shop time by replacing a failing tank quickly yourself\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat practical benefits will I notice after replacing my damaged reservoir?\u003c\/h3\u003e\n\u003cp\u003eReplacing a cracked or leaky expansion tank restores coolant containment and helps maintain proper system pressure and engine operating temperature consistency. You’ll also gain easier visual monitoring thanks to the translucent construction, and avoid recurring coolant top-ups or roadside overheating risks associated with leaks.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStops coolant loss and related warning lights\u003c\/li\u003e\n  \u003cli\u003eHelps preserve thermostat and water pump longevity by maintaining system pressure\u003c\/li\u003e\n  \u003cli\u003eTransparent walls simplify level checks during routine maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: This YEHERIT 603-253 coolant reservoir is aimed at owners and technicians of compatible Audi and Volkswagen cars who need a reliable, cost-effective replacement for a failing factory tank. It suits DIY mechanics who want a straightforward bolt-on part, fleet maintainers keeping older vehicles in service, and anyone who needs to restore their cooling system’s integrity without expensive dealer parts.\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 reservoir bolt directly onto my Audi or VW?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it is a direct-replacement designed to match factory mounting points for the models listed, using the same fasteners and hose connections.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Which OEM part numbers does this replace?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: This YEHERIT tank corresponds to part numbers 603-253 and is compatible with 1K0121407F and 1K0121407A.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"YEHERIT","offers":[{"title":"Default Title","offer_id":55163803500887,"sku":"B0DG8VP85J","price":31.74,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/yeherit-front-view-reservoir.jpg?v=1790347403","url":"https:\/\/britishgarage.co.uk\/products\/yeherit-front-coolant-expansion-tank-603-253-for-audi-vw-translucent-polypropylene-direct-fit","provider":"British Garage","version":"1.0","type":"link"}