{"product_id":"expansion-tank-audi-a1-sportback-et34","title":"Expansion Tank for Audi A1 Sportback, VW Polo \u0026 T-Cross - ET34","description":"\u003cdiv class=\"product-description\"\u003e\n  \u003ch2\u003eVehicle Fitment \u0026amp; Part Details\u003c\/h2\u003e\n\n  \u003cp\u003eThis expansion tank for the Audi A1 Sportback cross-references OE 2Q0121407, shared across Audi, Seat, and VW. Material is plastic. Confirm compatibility by matching the listed fitment details, any OEM reference numbers supplied, and VIN\/engine\/chassis information where variants exist.\u003c\/p\u003e\n\n  \u003ch3\u003eKey Details\u003c\/h3\u003e\n  \u003cdl style=\"display:grid; grid-template-columns: 140px 1fr; gap: 6px 12px; margin:0;\"\u003e\n    \u003cdt style=\"font-weight:600; margin:0;\"\u003eSKU\u003c\/dt\u003e\n    \u003cdd style=\"margin:0;\"\u003eET34\u003c\/dd\u003e\n\n    \u003cdt style=\"font-weight:600; margin:0;\"\u003eComponent\u003c\/dt\u003e\n    \u003cdd style=\"margin:0;\"\u003eExpansion Tank\u003c\/dd\u003e\n\n    \u003cdt style=\"font-weight:600; margin:0;\"\u003eBrand\u003c\/dt\u003e\n    \u003cdd style=\"margin:0;\"\u003ePartquip\u003c\/dd\u003e\n\n    \u003cdt style=\"font-weight:600; margin:0;\"\u003eOEM References\u003c\/dt\u003e\n    \u003cdd style=\"margin:0;\"\u003e\n      \u003cul style=\"margin:0; padding-left:18px;\"\u003e\n        \u003cli\u003e\n\u003cstrong\u003eAudi \/ Seat \/ VW:\u003c\/strong\u003e 2Q0121407\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eAudi \/ Seat \/ VW:\u003c\/strong\u003e 2Q0121407A\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eAudi \/ Seat \/ VW:\u003c\/strong\u003e 2Q0121407B\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eAudi \/ Seat \/ VW:\u003c\/strong\u003e 2Q0121407C\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eAudi \/ Seat \/ VW:\u003c\/strong\u003e 2Q0121407D\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/dd\u003e\n\n    \u003cdt style=\"font-weight:600; margin:0;\"\u003ePrimary Fitment\u003c\/dt\u003e\n    \u003cdd style=\"margin:0;\"\u003eAudi A1 Sportback 30 TFSi DKJA \/ DKRF (2019-)\u003c\/dd\u003e\n\n    \u003cdt style=\"font-weight:600; margin:0;\"\u003eSpecs\u003c\/dt\u003e\n    \u003cdd style=\"margin:0;\"\u003eMaterial: Plastic\u003c\/dd\u003e\n  \u003c\/dl\u003e\n\n  \u003ch3\u003eKey Benefits\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eCross-references 5 OEM numbers shared across Audi, Seat, and VW including 2Q0121407 for verification before ordering.\u003c\/li\u003e\n    \u003cli\u003ePlastic construction matching the original expansion tank material.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eOEM Reference Numbers\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAudi \/ Seat \/ VW:\u003c\/strong\u003e 2Q0121407\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAudi \/ Seat \/ VW:\u003c\/strong\u003e 2Q0121407A\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAudi \/ Seat \/ VW:\u003c\/strong\u003e 2Q0121407B\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAudi \/ Seat \/ VW:\u003c\/strong\u003e 2Q0121407C\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAudi \/ Seat \/ VW:\u003c\/strong\u003e 2Q0121407D\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n  \u003cdiv style=\"overflow-x:auto; margin:0 0 24px 0;\"\u003e\n    \u003ctable style=\"width:100%; border-collapse:collapse; font-size:14px; line-height:1.45;\"\u003e\n      \u003cthead\u003e\n        \u003ctr style=\"background-color:#1a1a2e; color:#ffffff;\"\u003e\n          \u003cth scope=\"col\" style=\"padding:5px 8px; text-align:left; border:1px solid #ddd; vertical-align:top;\"\u003eSpecification\u003c\/th\u003e\n          \u003cth scope=\"col\" style=\"padding:5px 8px; text-align:left; border:1px solid #ddd; vertical-align:top;\"\u003eValue\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr style=\"background-color:#f9f9f9;\"\u003e\n          \u003cth scope=\"row\" style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere; text-align:left; font-weight:normal;\"\u003eMaterial\u003c\/th\u003e\n          \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003ePlastic\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\n  \u003cp\u003eIncludes 10 supplied applications.\u003c\/p\u003e\n  \u003cdetails\u003e\n    \u003csummary style=\"display:inline-block; background-color:#1a1a2e; color:#ffffff; padding:10px 18px; border-radius:8px; cursor:pointer; font-size:14px; font-weight:600; margin:8px 0 14px 0; list-style:none;\"\u003eView Full Vehicle Fitment (10 applications)\u003c\/summary\u003e\n    \u003cdiv style=\"overflow-x:auto; margin:0 0 24px 0;\"\u003e\n      \u003ctable style=\"width:100%; border-collapse:collapse; font-size:14px; line-height:1.45;\"\u003e\n        \u003cthead\u003e\n          \u003ctr style=\"background-color:#1a1a2e; color:#ffffff;\"\u003e\n            \u003cth scope=\"col\" style=\"padding:5px 8px; text-align:left; border:1px solid #ddd; vertical-align:top;\"\u003eMake\u003c\/th\u003e\n            \u003cth scope=\"col\" style=\"padding:5px 8px; text-align:left; border:1px solid #ddd; vertical-align:top;\"\u003eModel\u003c\/th\u003e\n            \u003cth scope=\"col\" style=\"padding:5px 8px; text-align:left; border:1px solid #ddd; vertical-align:top;\"\u003eEngine\u003c\/th\u003e\n            \u003cth scope=\"col\" style=\"padding:5px 8px; text-align:left; border:1px solid #ddd; vertical-align:top;\"\u003eYears\u003c\/th\u003e\n          \u003c\/tr\u003e\n        \u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr style=\"background-color:#f9f9f9;\"\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003eAudi\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003eA1 Sportback\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003e30 TFSi DKJA \/ DKRF\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003e2019-\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"background-color:#ffffff;\"\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003eAudi\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003eA1 Sportback\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003e35 TFSi DADA \/ DPCA\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003e2019-\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"background-color:#f9f9f9;\"\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003eAudi\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003eA1 Sportback\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003e40 TFSi CZPC \/ DKZC\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003e2019-\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"background-color:#ffffff;\"\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003eVW\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003ePolo\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003e1.0 TSi Comfort CHZL\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003e2018-\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"background-color:#f9f9f9;\"\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003eVW\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003ePolo\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003e1.0 TSi Comfort CHZJ \/ DKJA\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003e2018-\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"background-color:#ffffff;\"\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003eVW\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003ePolo\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003e2.0 GTi CZPC \/ DKZC\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003e2018-\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"background-color:#f9f9f9;\"\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003eVW\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003eT-Cross\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003e1.0 TSi DKJA \/ DKRF\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003e2018-\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"background-color:#ffffff;\"\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003eVW\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003eT-Cross\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003e1.0 TSi CHZL \/ DKLA\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003e2020-\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"background-color:#f9f9f9;\"\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003eVW\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003eT-Cross\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003e1.5 TSi DADA \/ DPCA\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003e2020-\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr style=\"background-color:#ffffff;\"\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003eVW\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003eTiguan\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003e2.0\u003c\/td\u003e\n            \u003ctd style=\"padding:4px 8px; border:1px solid #ddd; vertical-align:top; overflow-wrap:anywhere;\"\u003e2019-2021\u003c\/td\u003e\n          \u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/details\u003e\n\n  \u003ch3\u003eFitment Notes\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eAlways match OEM reference number(s) and vehicle details before ordering. Confirm exact fitment using VIN, engine code, or chassis number if multiple variants exist.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation \/ Use \/ Maintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eCompare the new expansion tank to the removed unit before installation to confirm the mounting points, cap type, and hose connections match.\u003c\/li\u003e\n    \u003cli\u003eFlush or clean the cooling system where required before fitting the new part.\u003c\/li\u003e\n    \u003cli\u003eReplace related seals, hoses, or coolant as needed during installation.\u003c\/li\u003e\n    \u003cli\u003eFill with the correct coolant mixture specified for the application and bleed the cooling system fully.\u003c\/li\u003e\n    \u003cli\u003eAfter installation, check for leaks and verify the coolant level after the first heat cycle.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eCommon Questions\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eDoes this expansion tank fit my Audi A1 Sportback?\u003c\/strong\u003e\u003cbr\u003e\n    This part (ET34) is listed for the fitments shown on this page. Confirm by matching the fitment details and verifying VIN\/engine\/chassis information where variants exist.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does this cross-reference?\u003c\/strong\u003e\u003cbr\u003e\n    Listed cross-references: 2Q0121407, 2Q0121407A, 2Q0121407B, 2Q0121407C, 2Q0121407D. Match at least one OEM reference to your original part before ordering.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eWhat brand is this part?\u003c\/strong\u003e\u003cbr\u003e\n    This listing is for a Partquip expansion tank.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eHow do I confirm fitment if there are multiple variants?\u003c\/strong\u003e\u003cbr\u003e\n    Use VIN, engine code, and chassis\/platform details and compare them to the fitment section above. If unsure, request fitment assistance before ordering.\n  \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Partquip","offers":[{"title":"Default Title","offer_id":51897469305063,"sku":"ET34","price":584.54,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0606\/5943\/3703\/files\/ET34.jpg?v=1774255141","url":"https:\/\/modernautoparts.co.za\/zu\/products\/expansion-tank-audi-a1-sportback-et34","provider":"Modern Auto Parts ","version":"1.0","type":"link"}