{"product_id":"mercedes-benz-e-w211-butterfly-body-3-00-a6420900270-a6420901037","title":"Mercedes-Benz E W211 Butterfly Body 3.00 A6420900270 A6420901037","description":"\u003cp\u003e#127\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eGenuine used Mercedes-Benz E-Class W211 3.0 CDI electronic throttle \/ intake butterfly body, carrying references A6420900270 and A6420901037. This electronically controlled intake component is used with the OM642 3.0 V6 CDI diesel engine and regulates intake airflow as part of the engine-management and EGR system.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eMercedes Part Number: A6420900270\u003c\/p\u003e\u003cp\u003eAdditional \/ Replacement Reference: A6420901037\u003c\/p\u003e\u003cp\u003eOE Format: A 642 090 02 70 \/ A 642 090 10 37\u003c\/p\u003e\u003cp\u003ePart Type: Electronic Throttle Body \/ Intake Butterfly Valve \/ Throttle Valve Actuator\u003c\/p\u003e\u003cp\u003eEngine Family: OM642\u003c\/p\u003e\u003cp\u003eEngine Size: 3.0 V6 CDI Diesel\u003c\/p\u003e\u003cp\u003ePosition: Engine Intake System\u003c\/p\u003e\u003cp\u003eManufacturer: Mercedes-Benz \/ OEM Supplier\u003c\/p\u003e\u003cp\u003eCondition: Genuine used part\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCompatibility\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eSuitable for selected Mercedes-Benz E-Class W211 \/ S211 3.0 CDI models equipped with the OM642 V6 diesel engine, including applications such as:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Mercedes-Benz E 280 CDI – selected OM642 versions\u003c\/p\u003e\u003cp\u003e* Mercedes-Benz E 300 CDI – selected versions\u003c\/p\u003e\u003cp\u003e* Mercedes-Benz E 320 CDI – selected OM642 versions\u003c\/p\u003e\u003cp\u003e* Mercedes-Benz E-Class W211 Saloon\u003c\/p\u003e\u003cp\u003e* Mercedes-Benz E-Class S211 Estate\u003c\/p\u003e\u003cp\u003e* Approx. mid\/late-2000s OM642 applications\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe A642… numbering identifies this as an OM642-family component, but Mercedes used several revisions of the throttle\/intake valve across different OM642 vehicles.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe original numbers, electrical connector and physical configuration should therefore be compared before ordering.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eTechnical Information\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eUnlike the throttle body on a petrol engine, the diesel throttle butterfly is not primarily responsible for controlling engine speed.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe OM642 diesel engine normally regulates power through fuel quantity, while this electronic butterfly valve is used by the engine-management system for functions including:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Intake airflow management\u003c\/p\u003e\u003cp\u003e* EGR system operation\u003c\/p\u003e\u003cp\u003e* Creating the required pressure differential for EGR flow\u003c\/p\u003e\u003cp\u003e* Emissions control\u003c\/p\u003e\u003cp\u003e* Smooth engine shutdown\u003c\/p\u003e\u003cp\u003e* Intake-system management during different operating conditions\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAn electric actuator integrated into the assembly moves the butterfly plate according to commands from the engine ECU.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eOM642 Intake \u0026amp; EGR System Information\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe OM642 uses electronically controlled intake and exhaust-gas-recirculation components to manage emissions and combustion.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDuring EGR operation, the engine ECU can partially close the intake butterfly.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThis changes intake pressure and helps draw the required quantity of exhaust gas through the EGR system and back into the intake.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe throttle body therefore works closely with components including:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Engine ECU\u003c\/p\u003e\u003cp\u003e* EGR valve\u003c\/p\u003e\u003cp\u003e* EGR cooler\u003c\/p\u003e\u003cp\u003e* Mass Air Flow sensor\u003c\/p\u003e\u003cp\u003e* MAP \/ boost-pressure sensor\u003c\/p\u003e\u003cp\u003e* Turbocharger system\u003c\/p\u003e\u003cp\u003e* Intake manifolds\u003c\/p\u003e\u003cp\u003e* Swirl flap system\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eA fault elsewhere in this system can sometimes generate symptoms that appear to indicate a defective throttle body.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eElectronic Actuator Information\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe butterfly plate is operated by an integrated electric actuator.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe ECU commands a required valve position and monitors its operation using position feedback.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eProblems can occur because of:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Internal electric motor failure\u003c\/p\u003e\u003cp\u003e* Worn actuator gears\u003c\/p\u003e\u003cp\u003e* Position-sensor failure\u003c\/p\u003e\u003cp\u003e* Electrical connection problems\u003c\/p\u003e\u003cp\u003e* Carbon\/oil contamination around the butterfly\u003c\/p\u003e\u003cp\u003e* Mechanical sticking of the valve\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eOil vapour from the crankcase ventilation system combined with EGR deposits can create contamination within the diesel intake system over time.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCommon Symptoms of a Faulty Throttle Body\u003c\/p\u003e\u003cbr\u003e\u003cp\u003ePossible symptoms include:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Engine-management warning light\u003c\/p\u003e\u003cp\u003e* Reduced engine power\u003c\/p\u003e\u003cp\u003e* Limp-home mode\u003c\/p\u003e\u003cp\u003e* Poor throttle response\u003c\/p\u003e\u003cp\u003e* Irregular engine operation\u003c\/p\u003e\u003cp\u003e* Increased emissions\u003c\/p\u003e\u003cp\u003e* EGR-related fault codes\u003c\/p\u003e\u003cp\u003e* Intake-airflow plausibility faults\u003c\/p\u003e\u003cp\u003e* Throttle-position faults\u003c\/p\u003e\u003cp\u003e* Butterfly valve sticking\u003c\/p\u003e\u003cp\u003e* Engine shutting down less smoothly\u003c\/p\u003e\u003cp\u003e* Actuator motor not operating\u003c\/p\u003e\u003cp\u003e* Intermittent electrical faults\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eA sticking butterfly can sometimes operate intermittently before complete failure.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eImportant Diagnostic Information\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eBefore replacing the throttle body, carry out a complete diagnostic scan.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCheck:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Throttle actuator fault codes\u003c\/p\u003e\u003cp\u003e* Requested versus actual throttle position\u003c\/p\u003e\u003cp\u003e* Electrical connector\u003c\/p\u003e\u003cp\u003e* Wiring continuity\u003c\/p\u003e\u003cp\u003e* ECU power\/control signals\u003c\/p\u003e\u003cp\u003e* EGR valve operation\u003c\/p\u003e\u003cp\u003e* MAF readings\u003c\/p\u003e\u003cp\u003e* MAP \/ boost-pressure readings\u003c\/p\u003e\u003cp\u003e* Intake hoses\u003c\/p\u003e\u003cp\u003e* Boost leaks\u003c\/p\u003e\u003cp\u003e* Carbon contamination\u003c\/p\u003e\u003cp\u003e* Intake manifold condition\u003c\/p\u003e\u003cp\u003e* Swirl flap operation\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAn EGR, airflow or boost-system fault can sometimes generate secondary throttle-related codes.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eFor this reason, replacing the throttle body purely on the basis of a generic engine-management warning light is not recommended.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCarbon \u0026amp; Oil Contamination\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eSome oily residue inside an OM642 diesel intake system can be normal due to crankcase ventilation.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eHeavy deposits, however, can interfere with butterfly movement.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eIf excessive contamination is found, related intake and EGR components should also be inspected rather than simply replacing the throttle body.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDo not force the electronic butterfly mechanism manually, as excessive force may damage the internal actuator\/gearing.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eInstallation\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eBefore installation:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Switch off the ignition\u003c\/p\u003e\u003cp\u003e* Disconnect the battery where required by Mercedes workshop procedure\u003c\/p\u003e\u003cp\u003e* Inspect the electrical connector\u003c\/p\u003e\u003cp\u003e* Check intake hoses and seals\u003c\/p\u003e\u003cp\u003e* Inspect mating surfaces\u003c\/p\u003e\u003cp\u003e* Replace damaged seals\/gaskets where necessary\u003c\/p\u003e\u003cp\u003e* Ensure no debris enters the intake\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eAfter installation:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Check all intake connections\u003c\/p\u003e\u003cp\u003e* Check for air\/boost leaks\u003c\/p\u003e\u003cp\u003e* Reconnect the electrical connector securely\u003c\/p\u003e\u003cp\u003e* Clear relevant stored fault codes\u003c\/p\u003e\u003cp\u003e* Test actuator operation with suitable diagnostic equipment where required\u003c\/p\u003e\u003cp\u003e* Confirm correct engine operation\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eProgramming \/ Coding\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eDirect vehicle-specific coding is normally not required when fitting the correct matching throttle body.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eHowever, depending on ECU\/software configuration, diagnostic adaptation or actuator teach-in may be required or beneficial after replacement.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eA Mercedes-compatible diagnostic system such as Xentry\/STAR can be used to check actual\/commanded throttle position, run actuator tests and perform available adaptation procedures.\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* A6420900270\u003c\/p\u003e\u003cp\u003e* A6420901037\u003c\/p\u003e\u003cp\u003e* Complete number printed on the original unit\u003c\/p\u003e\u003cp\u003e* OM642 engine variant\u003c\/p\u003e\u003cp\u003e* Electrical connector\u003c\/p\u003e\u003cp\u003e* Connector pin configuration\u003c\/p\u003e\u003cp\u003e* Butterfly housing design\u003c\/p\u003e\u003cp\u003e* Intake pipe connections\u003c\/p\u003e\u003cp\u003e* Mounting points\u003c\/p\u003e\u003cp\u003e* Vehicle VIN \/ production date\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eMercedes used numerous revisions of OM642 intake components, and parts that appear almost identical externally are not automatically interchangeable.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eMatching the OE references with the original component or checking against the VIN is strongly recommended.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCondition\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eGenuine Mercedes-Benz used electronic engine component.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe item may show normal signs of previous use, including:\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e* Surface marks\u003c\/p\u003e\u003cp\u003e* Scratches\u003c\/p\u003e\u003cp\u003e* Oil residue\u003c\/p\u003e\u003cp\u003e* Carbon deposits\u003c\/p\u003e\u003cp\u003e* General signs of removal\/storage\u003c\/p\u003e\u003cbr\u003e\u003cp\u003ePlease inspect all listing photographs carefully for the exact condition of the butterfly plate, housing, electrical connector and mounting points.\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 faulty, sticking, damaged or non-operating Mercedes-Benz W211 3.0 CDI OM642 electronic throttle \/ intake butterfly body, provided A6420900270 \/ A6420901037 correspond with the original component.\u003c\/p\u003e\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e Mercedes-Benz\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Throttle Body\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer Warranty:\u003c\/strong\u003e 1 Month\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e A6420900070\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Germany\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReference OE\/OEM Number:\u003c\/strong\u003e A6420900070\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mercedes-Benz","offers":[{"title":"Default Title","offer_id":54895717482823,"sku":"158260415725","price":35.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/1528\/3527\/files\/10_8136dfce-43ee-4b30-ac72-89665685e86d.jpg?v=1788613393","url":"https:\/\/spares4repairs.store\/products\/mercedes-benz-e-w211-butterfly-body-3-00-a6420900270-a6420901037","provider":"Spares 4 Repairs","version":"1.0","type":"link"}