{"product_id":"vw-transporter-t5-2-0-caaa-egr-connecting-pipe-d3l131521d","title":"Vw Transporter T5 2.0 CAAA EGR connecting pipe d3l131521d","description":"\u003cp\u003e#123\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eGenuine used Volkswagen Transporter T5.1 2.0 TDI EGR connecting pipe \/ exhaust gas recirculation pipe, part number 03L131521D. This metal pipe forms part of the diesel EGR system and provides a connection for routing exhaust gases through the EGR circuit before they are reintroduced into the engine intake system.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003ePart Number: 03L131521D\u003c\/p\u003e\u003cp\u003eVW OE Number: 03L 131 521 D\u003c\/p\u003e\u003cp\u003ePart Type: EGR Connecting Pipe \/ EGR Transfer Pipe \/ Exhaust Gas Recirculation Pipe\u003c\/p\u003e\u003cp\u003eEngine Type: 2.0 TDI Common Rail\u003c\/p\u003e\u003cp\u003eKnown Engine Application: CAAA\u003c\/p\u003e\u003cp\u003eCAAA Output: 62 kW \/ 84 PS\u003c\/p\u003e\u003cp\u003ePosition: Engine EGR \/ Exhaust Gas Recirculation System\u003c\/p\u003e\u003cp\u003eMaterial: Metal \/ Steel\u003c\/p\u003e\u003cp\u003eManufacturer: Volkswagen \/ VAG\u003c\/p\u003e\u003cp\u003eCondition: Genuine used part\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCompatibility\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eSuitable for selected:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Volkswagen Transporter T5.1 – 2010–2015\u003c\/p\u003e\u003cp\u003e* Volkswagen Caravelle T5.1 – 2010–2015\u003c\/p\u003e\u003cp\u003e* Volkswagen Multivan T5.1 – selected versions\u003c\/p\u003e\u003cp\u003e* Volkswagen California T5.1 – selected versions\u003c\/p\u003e\u003cp\u003e* Panel van\u003c\/p\u003e\u003cp\u003e* Kombi\u003c\/p\u003e\u003cp\u003e* Shuttle \/ passenger variants\u003c\/p\u003e\u003cp\u003e* Selected chassis cab \/ flatbed versions\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eKnown application:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* 2.0 TDI CAAA – 62 kW \/ 84 PS\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe 03L131521D pipe is not exclusive to the CAAA engine. It is catalogued across a number of VW Group 2.0 TDI applications, so compatibility should be established using the OE number, engine configuration and physical pipe design.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eTechnical Information\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe EGR connecting pipe forms part of the Exhaust Gas Recirculation system.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe EGR system redirects a controlled quantity of exhaust gas back into the engine’s intake airflow.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThis reduces peak combustion temperature and helps control nitrogen oxide (NOx) emissions.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe connecting pipe provides a sealed passage for these gases between components of the EGR system.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe 03L131521D reference is commonly described as the connecting pipe between the EGR\/EGR cooler system and engine side.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eEGR System Information\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eOn the T5.1 2.0 TDI Common Rail engine, the EGR system operates together with components including:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* EGR valve\u003c\/p\u003e\u003cp\u003e* EGR cooler\u003c\/p\u003e\u003cp\u003e* EGR connecting pipes\u003c\/p\u003e\u003cp\u003e* Engine ECU\u003c\/p\u003e\u003cp\u003e* Intake manifold\u003c\/p\u003e\u003cp\u003e* Throttle\/intake control valve\u003c\/p\u003e\u003cp\u003e* Exhaust system\u003c\/p\u003e\u003cp\u003e* Temperature and pressure sensors\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe ECU determines how much exhaust gas should be recirculated according to engine load, temperature and operating conditions.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe EGR pipe itself contains no electronic components. Its purpose is to provide the physical gas passage between EGR-system components.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eFlexible Pipe Section\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDepending on the exact version, the EGR connecting pipe incorporates a corrugated\/flexible section.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThis allows a small amount of movement caused by:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Engine vibration\u003c\/p\u003e\u003cp\u003e* Thermal expansion\u003c\/p\u003e\u003cp\u003e* Heating and cooling cycles\u003c\/p\u003e\u003cp\u003e* Movement between connected engine components\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eOver time, repeated heat cycles and vibration can cause the flexible section to crack.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThis is one of the areas that should be inspected carefully on a used EGR pipe.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCommon Symptoms \/ Reasons for Replacement\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eA cracked or leaking EGR pipe may cause:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Exhaust gas smell in the engine bay\u003c\/p\u003e\u003cp\u003e* Exhaust fumes around the vehicle\u003c\/p\u003e\u003cp\u003e* Hissing or blowing noise\u003c\/p\u003e\u003cp\u003e* Ticking noise from the engine area\u003c\/p\u003e\u003cp\u003e* Soot deposits around the pipe\u003c\/p\u003e\u003cp\u003e* Engine-management warning light\u003c\/p\u003e\u003cp\u003e* EGR-related fault codes\u003c\/p\u003e\u003cp\u003e* Reduced EGR system performance\u003c\/p\u003e\u003cp\u003e* Increased emissions\u003c\/p\u003e\u003cp\u003e* Visible crack in the flexible section\u003c\/p\u003e\u003cp\u003e* Damaged flange\u003c\/p\u003e\u003cp\u003e* Broken mounting point\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eA small crack can initially be difficult to see but may leave black soot deposits around the leaking area.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eImportant Diagnostic Information\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eBefore replacing the pipe, inspect the complete EGR system.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCheck:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* EGR pipe flexible section\u003c\/p\u003e\u003cp\u003e* Flanges\u003c\/p\u003e\u003cp\u003e* Gaskets\/seals\u003c\/p\u003e\u003cp\u003e* Mounting bolts\u003c\/p\u003e\u003cp\u003e* EGR valve\u003c\/p\u003e\u003cp\u003e* EGR cooler\u003c\/p\u003e\u003cp\u003e* EGR cooler connections\u003c\/p\u003e\u003cp\u003e* Intake manifold\u003c\/p\u003e\u003cp\u003e* Exhaust connections\u003c\/p\u003e\u003cp\u003e* Nearby wiring and hoses\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIf black soot is visible around one of the flanges, the problem may be a failed gasket or loose connection rather than a cracked pipe.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCarbon \u0026amp; Soot Information\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eBecause exhaust gas passes directly through this component, internal carbon\/soot deposits are normal on a used EGR pipe.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eSome carbon contamination does not necessarily indicate that the component is faulty.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eHowever, excessive restriction should be investigated because heavy carbon accumulation elsewhere in the EGR\/intake system can affect EGR flow.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIf the vehicle has EGR-flow fault codes, the EGR valve, cooler and intake system should also be inspected.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eInstallation\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eBefore installation:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Allow the engine\/exhaust system to cool completely\u003c\/p\u003e\u003cp\u003e* Inspect the replacement pipe for cracks\u003c\/p\u003e\u003cp\u003e* Check both flange surfaces\u003c\/p\u003e\u003cp\u003e* Clean mating surfaces appropriately\u003c\/p\u003e\u003cp\u003e* Inspect mounting hardware\u003c\/p\u003e\u003cp\u003e* Use suitable replacement gaskets\/seals where required\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDuring installation:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Position the pipe without forcing it\u003c\/p\u003e\u003cp\u003e* Align both flanges correctly\u003c\/p\u003e\u003cp\u003e* Start fasteners before final tightening\u003c\/p\u003e\u003cp\u003e* Avoid twisting or stressing the flexible section\u003c\/p\u003e\u003cp\u003e* Tighten fasteners to the correct VW specification\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAfter installation, start the engine and check carefully for exhaust leakage around both connections.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eProgramming \/ Coding\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eNo programming or coding is required.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThis is a mechanical EGR-system component.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIf EGR-related diagnostic fault codes were previously stored, they may need to be cleared after the underlying fault has been repaired.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eImportant Compatibility Note\u003c\/p\u003e\u003cbr\u003e\u003cp\u003ePlease compare before ordering:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* OE number – 03L131521D\u003c\/p\u003e\u003cp\u003e* Engine code\u003c\/p\u003e\u003cp\u003e* Pipe shape\u003c\/p\u003e\u003cp\u003e* Flexible section\u003c\/p\u003e\u003cp\u003e* Flange design\u003c\/p\u003e\u003cp\u003e* Bolt-hole positions\u003c\/p\u003e\u003cp\u003e* Mounting points\u003c\/p\u003e\u003cp\u003e* EGR system configuration\u003c\/p\u003e\u003cp\u003e* Vehicle production date\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAlthough this part is known to fit selected Transporter T5.1 2.0 TDI CAAA applications, 03L131521D is also used with other 2.0 TDI engines and VW Group vehicles.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDo not purchase solely because your vehicle has a 2.0 TDI engine.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eMatching 03L131521D directly with the original component is strongly recommended.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCondition\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eGenuine Volkswagen used EGR system component.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAs a used exhaust\/EGR part, normal signs of previous use may include:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Carbon deposits\u003c\/p\u003e\u003cp\u003e* Black soot\u003c\/p\u003e\u003cp\u003e* Heat discolouration\u003c\/p\u003e\u003cp\u003e* Surface oxidation\u003c\/p\u003e\u003cp\u003e* Light corrosion\u003c\/p\u003e\u003cp\u003e* Scratches and marks\u003c\/p\u003e\u003cp\u003e* General signs of removal\u003c\/p\u003e\u003cbr\u003e\u003cp\u003ePlease inspect all listing photographs carefully, particularly the flexible section, flanges, mounting points and pipe body.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eNew EGR pipe gaskets\/seals are recommended during installation where applicable.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAny identifying colour\/security markings applied to the part must remain intact in the event of a return.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIdeal genuine replacement for a cracked, leaking or damaged Volkswagen Transporter T5.1 2.0 TDI CAAA EGR connecting pipe, provided 03L131521D matches the original component.\u003c\/p\u003e\u003cdiv\u003e\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e EGR\u003c\/p\u003e\u003c\/div\u003e","brand":"EGR","offers":[{"title":"Default Title","offer_id":54896734241095,"sku":"158260796507","price":30.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/1528\/3527\/files\/10_53dc756b-9da4-42a8-88a0-e8b7494835f1.jpg?v=1788622336","url":"https:\/\/spares4repairs.store\/products\/vw-transporter-t5-2-0-caaa-egr-connecting-pipe-d3l131521d","provider":"Spares 4 Repairs","version":"1.0","type":"link"}