{"product_id":"the-bolt-on-wind-k04-001-turbocharger-1-8t","title":"The Bolt On Wind | K04-001 Bolt-On Turbocharger for 1.8T Volkswagen and Audi","description":"\u003cdiv class=\"product-narrative\"\u003e\n\u003cp\u003eAir Is the Cheapest Horsepower. Getting more of it into a 1.8T has been a solved problem for two decades, and the K04-001 is the solution the aftermarket settled on. It bolts to the factory manifold position, keeps the standard downpipe pattern where the installation allows it, and moves enough air to support the sort of power the original turbo stops delivering somewhere past four thousand revs.\u003c\/p\u003e\n\u003cp\u003eThe internals are specified for the temperatures involved rather than for the price point. The turbine housing is ductile iron QT450-10 and holds shape up to 700 degrees Celsius, the compressor housing is ZL104 aluminium chosen to keep weight down, and the rotating group runs on a journal or floating bearing with a high speed oil seal ring and a precision clearance that keeps the oil where it belongs. The unit is water and oil cooled, which is what allows a car used in traffic to survive between track sessions.\u003c\/p\u003e\n\u003cp\u003eOne detail decides whether the installation is a bolt on job or a weekend of fabrication. The compressor inlet on the K04-001 measures 48.7mm against 45mm on the K03-052 and K03-053, so cars originally fitted with a K03 need the intake pipe modified to match. Everything else is a parts-number conversation: cross reference 53049500001, 06A145704T, 06A145713D and 06A145713DX against the vehicle you are working on, and treat the package dimensions of 30 by 27 by 24 centimetres and 6.9 kilogrammes as the shipping fact they are.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eFit it once, with the intake sorted, and let the manifold do the talking.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr style=\"margin: 28px 0; border: 0; border-top: 1px solid #e6e6e6;\"\u003e\n\u003cdiv class=\"product-features\"\u003e\n\u003ch3 style=\"font-size: 19px; margin: 0 0 14px;\"\u003eWhat the Housing Holds\u003c\/h3\u003e\n\u003cul style=\"list-style: none; padding: 0; margin: 0 0 8px;\"\u003e\n\u003cli style=\"padding: 8px 0 8px 22px; border-bottom: 1px solid #f0f0f0; position: relative;\"\u003e\n\u003cspan style=\"position: absolute; left: 0; color: #1a3a5c;\"\u003e✦\u003c\/span\u003eK04-001 turbocharger for 1.8 litre 5 valve Volkswagen and Audi engines\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0 8px 22px; border-bottom: 1px solid #f0f0f0; position: relative;\"\u003e\n\u003cspan style=\"position: absolute; left: 0; color: #1a3a5c;\"\u003e✦\u003c\/span\u003eWater and oil cooled centre housing suited to road and track use\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0 8px 22px; border-bottom: 1px solid #f0f0f0; position: relative;\"\u003e\n\u003cspan style=\"position: absolute; left: 0; color: #1a3a5c;\"\u003e✦\u003c\/span\u003eTurbine housing in ductile iron QT450-10, temperature stable to 700 degrees Celsius\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0 8px 22px; border-bottom: 1px solid #f0f0f0; position: relative;\"\u003e\n\u003cspan style=\"position: absolute; left: 0; color: #1a3a5c;\"\u003e✦\u003c\/span\u003eCompressor housing in lightweight ZL104 aluminium\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0 8px 22px; border-bottom: 1px solid #f0f0f0; position: relative;\"\u003e\n\u003cspan style=\"position: absolute; left: 0; color: #1a3a5c;\"\u003e✦\u003c\/span\u003eJournal or floating bearing design with high speed oil seal ring and precision clearance\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0 8px 22px; border-bottom: 1px solid #f0f0f0; position: relative;\"\u003e\n\u003cspan style=\"position: absolute; left: 0; color: #1a3a5c;\"\u003e✦\u003c\/span\u003eCompressor inlet of 48.7mm, so a K03 equipped car needs its intake pipe modified\u003c\/li\u003e\n\u003cli style=\"padding: 8px 0 8px 22px; border-bottom: 1px solid #f0f0f0; position: relative;\"\u003e\n\u003cspan style=\"position: absolute; left: 0; color: #1a3a5c;\"\u003e✦\u003c\/span\u003eCross referenced to 53049500001, 06A145704T, 06A145713D and 06A145713DX\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003chr style=\"margin: 28px 0; border: 0; border-top: 1px solid #e6e6e6;\"\u003e\n\u003cdiv class=\"product-specs\"\u003e\n\u003ch3 style=\"font-size: 19px; margin: 0 0 14px;\"\u003eBoost Record\u003c\/h3\u003e\n\u003cul style=\"list-style: none; padding: 0; margin: 0;\"\u003e\n\u003cli style=\"display: flex; padding: 9px 0; border-bottom: 1px solid #f0f0f0; font-size: 15px;\"\u003e\n\u003cspan style=\"flex: 0 0 210px; color: #6a6a6a;\"\u003eTurbo model\u003c\/span\u003e\u003cspan style=\"flex: 1; color: #232323;\"\u003e\u003cstrong\u003eK04-001\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display: flex; padding: 9px 0; border-bottom: 1px solid #f0f0f0; font-size: 15px;\"\u003e\n\u003cspan style=\"flex: 0 0 210px; color: #6a6a6a;\"\u003eEngine\u003c\/span\u003e\u003cspan style=\"flex: 1; color: #232323;\"\u003e\u003cstrong\u003e1.8 litre 5 valve turbo petrol\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display: flex; padding: 9px 0; border-bottom: 1px solid #f0f0f0; font-size: 15px;\"\u003e\n\u003cspan style=\"flex: 0 0 210px; color: #6a6a6a;\"\u003eCooling\u003c\/span\u003e\u003cspan style=\"flex: 1; color: #232323;\"\u003e\u003cstrong\u003eWater and oil cooled\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display: flex; padding: 9px 0; border-bottom: 1px solid #f0f0f0; font-size: 15px;\"\u003e\n\u003cspan style=\"flex: 0 0 210px; color: #6a6a6a;\"\u003eBearing type\u003c\/span\u003e\u003cspan style=\"flex: 1; color: #232323;\"\u003e\u003cstrong\u003eJournal or floating bearing\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display: flex; padding: 9px 0; border-bottom: 1px solid #f0f0f0; font-size: 15px;\"\u003e\n\u003cspan style=\"flex: 0 0 210px; color: #6a6a6a;\"\u003eTurbine housing\u003c\/span\u003e\u003cspan style=\"flex: 1; color: #232323;\"\u003e\u003cstrong\u003eDuctile iron QT450-10, rated to 700 degrees Celsius\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display: flex; padding: 9px 0; border-bottom: 1px solid #f0f0f0; font-size: 15px;\"\u003e\n\u003cspan style=\"flex: 0 0 210px; color: #6a6a6a;\"\u003eCompressor housing\u003c\/span\u003e\u003cspan style=\"flex: 1; color: #232323;\"\u003e\u003cstrong\u003eZL104 aluminium\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display: flex; padding: 9px 0; border-bottom: 1px solid #f0f0f0; font-size: 15px;\"\u003e\n\u003cspan style=\"flex: 0 0 210px; color: #6a6a6a;\"\u003eCompressor inlet\u003c\/span\u003e\u003cspan style=\"flex: 1; color: #232323;\"\u003e\u003cstrong\u003e48.7mm, against 45mm on K03-052 and K03-053\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display: flex; padding: 9px 0; border-bottom: 1px solid #f0f0f0; font-size: 15px;\"\u003e\n\u003cspan style=\"flex: 0 0 210px; color: #6a6a6a;\"\u003eCross reference\u003c\/span\u003e\u003cspan style=\"flex: 1; color: #232323;\"\u003e\u003cstrong\u003e53049500001, 06A145704T, 06A145713D, 06A145713DX\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display: flex; padding: 9px 0; border-bottom: 1px solid #f0f0f0; font-size: 15px;\"\u003e\n\u003cspan style=\"flex: 0 0 210px; color: #6a6a6a;\"\u003eFitment\u003c\/span\u003e\u003cspan style=\"flex: 1; color: #232323;\"\u003e\u003cstrong\u003eVolkswagen Golf, Beetle and Sport, Audi A3 and TT with the 1.8T engine\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display: flex; padding: 9px 0; border-bottom: 1px solid #f0f0f0; font-size: 15px;\"\u003e\n\u003cspan style=\"flex: 0 0 210px; color: #6a6a6a;\"\u003ePackage dimensions\u003c\/span\u003e\u003cspan style=\"flex: 1; color: #232323;\"\u003e\u003cstrong\u003e30 x 27 x 24 cm\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display: flex; padding: 9px 0; border-bottom: 1px solid #f0f0f0; font-size: 15px;\"\u003e\n\u003cspan style=\"flex: 0 0 210px; color: #6a6a6a;\"\u003ePackage weight\u003c\/span\u003e\u003cspan style=\"flex: 1; color: #232323;\"\u003e\u003cstrong\u003e6.9 kg\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"display: flex; padding: 9px 0; border-bottom: 1px solid #f0f0f0; font-size: 15px;\"\u003e\n\u003cspan style=\"flex: 0 0 210px; color: #6a6a6a;\"\u003eInstallation\u003c\/span\u003e\u003cspan style=\"flex: 1; color: #232323;\"\u003e\u003cstrong\u003eProfessional fitting recommended, intake modification may be required\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003chr style=\"margin: 28px 0; border: 0; border-top: 1px solid #e6e6e6;\"\u003e\n\u003cdiv class=\"product-applications\"\u003e\n\u003ch3 style=\"font-size: 19px; margin: 0 0 14px;\"\u003eWhere This Turbo Goes\u003c\/h3\u003e\n\u003cp\u003eThis is the upgrade for a 1.8T owner who has already done the supporting work and now wants the hardware to match. Golf and Beetle owners fit it after an exhaust, intercooler and mapping, where the original turbo is the remaining restriction. Audi A3 and TT owners fit it to recover the top end the factory unit stops delivering. Independent workshops stock it because 1.8T engine families are still everywhere and a replacement turbo at dealer prices rarely makes sense on a fifteen year old car. If the vehicle was fitted with a K03 from new, budget for the intake pipe modification; if it already ran a K04 pattern, the job is a straightforward swap with new gaskets, oil feed and return lines, and a proper oil prime before the first start.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr style=\"margin: 28px 0; border: 0; border-top: 1px solid #e6e6e6;\"\u003e\n\u003cdiv class=\"product-faq\"\u003e\n\u003ch3 style=\"font-size: 19px; margin: 0 0 16px;\"\u003eFitter Questions\u003c\/h3\u003e\n\u003cdiv style=\"margin-bottom: 16px;\"\u003e\n\u003cp style=\"margin: 0 0 6px; font-weight: 600; color: #1a3a5c;\"\u003eQ: Will it fit my car without modification?\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #3a3a3a;\"\u003eA: It bolts to the factory manifold position on 1.8T engines. Cars that left the factory with a K03 need the intake pipe modified, because the K04-001 compressor inlet is 48.7mm against 45mm on the K03-052 and K03-053.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 16px;\"\u003e\n\u003cp style=\"margin: 0 0 6px; font-weight: 600; color: #1a3a5c;\"\u003eQ: Do I need a remap after fitting?\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #3a3a3a;\"\u003eA: Yes. Fitting a larger turbocharger without adjusting the calibration leaves performance and reliability on the table, and in some cases creates lean running. Treat the hardware and the mapping as one job.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 16px;\"\u003e\n\u003cp style=\"margin: 0 0 6px; font-weight: 600; color: #1a3a5c;\"\u003eQ: Is it a genuine K04-001?\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #3a3a3a;\"\u003eA: The unit is built to the K04-001 specification with the housing materials and cross references listed in the specification table. Send us the vehicle details and the part number you are replacing and we will confirm the match.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 16px;\"\u003e\n\u003cp style=\"margin: 0 0 6px; font-weight: 600; color: #1a3a5c;\"\u003eQ: What else should I replace at the same time?\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #3a3a3a;\"\u003eA: Plan for gaskets, the oil feed and return lines, and a fresh oil and filter change. Priming the oil feed before the first start protects the bearings during those first seconds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 16px;\"\u003e\n\u003cp style=\"margin: 0 0 6px; font-weight: 600; color: #1a3a5c;\"\u003eQ: Does it come with a wastegate actuator?\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #3a3a3a;\"\u003eA: The turbocharger is supplied as described in the listing. Message us with the model you are considering and we will confirm exactly what is included in the package before you order.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 16px;\"\u003e\n\u003cp style=\"margin: 0 0 6px; font-weight: 600; color: #1a3a5c;\"\u003eQ: What power can it support?\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #3a3a3a;\"\u003eA: Realistic output depends on supporting modifications, fuel quality and calibration rather than on the turbocharger alone. Tell us what else is fitted to the car and we will give you an honest view of the range to expect.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-gallery\" style=\"margin-top: 34px; text-align: center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S6aacbab719dc48be8ae4c3d5ad5976a5k.webp?v=1774281529\" alt=\"\" style=\"max-width: 100%; height: auto; margin: 0 0 14px; display: block;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S057347c27dc9417fb94642c4476f6cbaT.webp?v=1774281530\" alt=\"\" style=\"max-width: 100%; height: auto; margin: 0 0 14px; display: block;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sbcb32b20283046ba82fd3455d848661fV.webp?v=1774281530\" alt=\"\" style=\"max-width: 100%; height: auto; margin: 0 0 14px; display: block;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S008cb035985348ccb0982950b5ea7c635.webp?v=1774281530\" alt=\"\" style=\"max-width: 100%; height: auto; margin: 0 0 14px; display: block;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S1494b2d30cba49eaacd90c8e38bd1299Y.webp?v=1774281530\" alt=\"\" style=\"max-width: 100%; height: auto; margin: 0 0 14px; display: block;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S6d1d79b2ac714ab384e533551050f574P.webp?v=1774281530\" alt=\"\" style=\"max-width: 100%; height: auto; margin: 0 0 14px; display: block;\"\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-promise\" style=\"margin-top: 34px; padding: 22px 24px; background: #f7f8fa; border-left: 3px solid #1a3a5c;\"\u003e\n\u003ch3 style=\"font-size: 17px; margin: 0 0 12px; color: #1a3a5c;\"\u003eThe EastSupplier Promise\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 10px; color: #3a3a3a;\"\u003eEvery unit in this listing is inspected and packed by our own cross-border team in China before it leaves the warehouse. We hold the stock, we handle the export paperwork, and we answer technical questions directly rather than routing you through a marketplace resolution desk.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px; color: #3a3a3a;\"\u003eOrders ship with tracking, and quantities above ten units are quoted individually so that shipping and duties are confirmed before you pay. If you are buying for a workshop, a studio, a fleet, or a service bay, tell us what you need and we will confirm availability, lead time, and landed cost.\u003c\/p\u003e\n\u003cp style=\"margin: 0; color: #3a3a3a;\"\u003eWholesale, OEM, and multi-unit inquiries: \u003cstrong\u003eservice@eastsupplier.com\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@graph\":[\n{\"@type\":\"Product\",\"name\":\"The Bolt On Wind | K04-001 Bolt-On Turbocharger for 1.8T Volkswagen and Audi\",\"description\":\"K04-001 bolt-on turbocharger for 1.8T Volkswagen and Audi engines, water and oil cooled, ductile iron turbine housing rated to 700 degrees Celsius, ZL104 aluminium compressor housing, 48.7mm compressor inlet.\",\"sku\":\"1005006851232830-United States\",\"brand\":{\"@type\":\"Brand\",\"name\":\"EastSupplier\"},\"image\":[\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S6aacbab719dc48be8ae4c3d5ad5976a5k.webp?v=1774281529\", \"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S057347c27dc9417fb94642c4476f6cbaT.webp?v=1774281530\", \"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sbcb32b20283046ba82fd3455d848661fV.webp?v=1774281530\"],\"url\":\"https:\/\/eastsupplier.com\/products\/the-bolt-on-wind-k04-001-turbocharger-1-8t\",\"offers\":{\"@type\":\"AggregateOffer\",\"priceCurrency\":\"USD\",\"lowPrice\":\"475.03\",\"highPrice\":\"475.03\",\"offerCount\":\"1\",\"availability\":\"https:\/\/schema.org\/InStock\",\"itemCondition\":\"https:\/\/schema.org\/NewCondition\",\"url\":\"https:\/\/eastsupplier.com\/products\/the-bolt-on-wind-k04-001-turbocharger-1-8t\",\"seller\":{\"@type\":\"Organization\",\"name\":\"EastSupplier\",\"url\":\"https:\/\/eastsupplier.com\"}},\"aggregateRating\":{\"@type\":\"AggregateRating\",\"ratingValue\":\"4.8\",\"reviewCount\":\"3\",\"bestRating\":\"5\",\"worstRating\":\"1\"}},\n{\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/eastsupplier.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"The Bolt On Wind | K04-001 Bolt-On Turbocharger for 1.8T Volkswagen and Audi\",\"item\":\"https:\/\/eastsupplier.com\/products\/the-bolt-on-wind-k04-001-turbocharger-1-8t\"}]}\n]}\n\u003c\/script\u003e","brand":"East Supplier Platform","offers":[{"title":"United States","offer_id":48675494035679,"sku":"1005006851232830-United States","price":396.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S6aacbab719dc48be8ae4c3d5ad5976a5k.webp?v=1774281529","url":"https:\/\/eastsupplier.co.uk\/it\/products\/the-bolt-on-wind-k04-001-turbocharger-1-8t","provider":"EastSupplier Platform","version":"1.0","type":"link"}