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reference","\u002Freference\u002F",[],[],{"id":442,"type":54,"label":443,"href":445,"icon":19,"iconRole":57,"description":19,"badge":19,"groupTitle":19,"groupKey":19,"style":19,"gridColumns":19,"cssClass":19,"psCategoryId":137,"psProductId":19,"showPsChildren":49,"position":29,"barVisible":17,"children":446,"psChildren":447},1006,{"fr":444},"Core deposit","\u002Fconsigne\u002F",[],[],{"analytics":449},{},{"header":451},{"logo":452,"topBar":456,"contactEmail":39,"contactPhone":472,"features":473,"navBar":475,"headerLinks":476,"storesHref":19},{"src":453,"alt":454,"text":19,"href":37,"class":455},"\u002Fbrand\u002Fautokur-lockup.svg","autoKUR — remanufactured turbochargers, injectors and high-pressure pumps","h-9 sm:h-11 lg:h-12 w-auto object-contain",{"message":457,"messageMobile":458,"showLanguages":17,"align":459,"languages":460},"Remanufactured turbochargers, injectors and high-pressure pumps — exchange units, shipped from France.","Exchange units, shipped from 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policy","\u002Fpolitique-de-confidentialite",{"ok":17,"alternates":531},{"en":532,"fr":533,"de":534},"\u002Fhigh-pressure-pump\u002Fmercedes\u002Fclasse-m\u002Fw163\u002F420-cdi-250-hp","\u002Ffr\u002Fpompe-haute-pression\u002Fmercedes\u002Fclasse-m\u002Fw163\u002F420-cdi-250-cv","\u002Fde\u002Fhochdruckpumpe\u002Fmercedes\u002Fclasse-m\u002Fw163\u002F420-cdi-250-ps",{"found":17,"kind":536,"pilier":537,"id_category":23,"id_parent":24,"level_depth":29,"path":538,"path_fr":539,"pilier_slug_fr":540,"pilier_slug":537,"slug":26,"name":25,"h1":541,"meta_title":541,"meta_description":28,"intro_html":27,"long_description_html":542,"image_url":543,"image_webp_srcset":544,"image_sizes":545,"image_alt":19,"breadcrumb":546,"children":559,"siblings":560,"aggregate":571,"faq":573,"tiles":623,"index_tier_closed":17},"category","high-pressure-pump","mercedes\u002Fclasse-m\u002Fw163\u002F420-cdi-250-hp","mercedes\u002Fclasse-m\u002Fw163\u002F420-cdi-250-cv","pompe-haute-pression","High-pressure pump MERCEDES Classe M (W163) 420 CDI 250 hp","\u003C!--seo-opt:v2-->\u003Cp>La catégorie 420 CDI 250 CV couvre les pompes haute pression destinées aux moteurs diesel de forte puissance, notamment ceux équipant les véhicules utilitaires et les berlines haut de gamme. Elle s’adresse aux garagistes indépendants, aux mécaniciens en atelier, aux passionnés réalisant eux-mêmes l’entretien, ainsi qu’aux acheteurs professionnels en Allemagne, Autriche et Suisse. On y trouve des pièces d’échange standard, remanufacturées ou neuves, conçues pour restaurer la performance des systèmes d’injection directe à rampe commune. Ces composants, souvent critiques pour le fonctionnement du moteur, nécessitent une compatibilité parfaite avec la motorisation et une qualité adaptée aux exigences des professionnels comme des particuliers exigeants.\u003C\u002Fp>\u003Cp>Les gammes proposées dans cette catégorie intègrent des calibres variés, adaptés aux puissances élevées et aux contraintes thermiques des moteurs 420 CDI. Les références disponibles couvrent les années de production clés, avec des formats standardisés pour faciliter l’intégration dans les systèmes existants. La sélection inclut des pièces neuves, des modèles remanufacturés ou des solutions d’échange standard, permettant de répondre à des besoins immédiats ou à des projets de maintenance préventive. Les commandes peuvent être composées en fonction des spécificités techniques du véhicule ou des préférences en matière de rapport qualité-prix.\u003C\u002Fp>\u003Ch2>Usages professionnels par métier\u003C\u002Fh2>\u003Cp>Cette section détaille les usages professionnels de la catégorie 420 CDI 250 CV, en ciblant les acteurs du secteur automobile qui interviennent sur des véhicules nécessitant des pompes haute pression performantes.\u003C\u002Fp>\u003Cul>\u003Cli>Garagiste indépendant : Remplacement rapide d’une pompe défaillante pour éviter une immobilisation prolongée du véhicule, en privilégiant des pièces d’échange standard prêtes à monter.\u003C\u002Fli>\u003Cli>Atelier de réparation : Diagnostic et remplacement d’une pompe haute pression en panne, avec vérification préalable de la compatibilité via la référence moteur ou le code OEM.\u003C\u002Fli>\u003Cli>Passionné en auto-entretien : Achat d’une pompe remanufacturée pour restaurer la puissance du moteur sans investir dans une pièce neuve, en suivant les conseils de montage.\u003C\u002Fli>\u003Cli>Fleet manager : Commande en gros de pompes d’échange standard pour un parc de véhicules utilitaires, avec gestion des stocks et rotation optimisée des pièces consignées.\u003C\u002Fli>\u003Cli>Spécialiste en injection diesel : Recherche de pompes haute pression adaptées aux moteurs 420 CDI pour des applications nécessitant une précision extrême, comme les véhicules de compétition.\u003C\u002Fli>\u003Cli>Concessionnaire occasion : Intégration de pompes d’échange standard dans les véhicules d’occasion haut de gamme, pour permettre leur fiabilité avant revente.\u003C\u002Fli>\u003Cli>Mécanicien en mobilité : Intervention sur site pour remplacer une pompe défectueuse, avec livraison express de la pièce compatible et gestion des consignes de retour.\u003C\u002Fli>\u003C\u002Ful>\u003Ch2>Comparatif des gammes\u003C\u002Fh2>\u003Cp>La sélection des pompes haute pression pour la catégorie 420 CDI 250 CV repose sur des références techniques précises, adaptées aux motorisations ciblées.\u003C\u002Fp>\u003Ctable>\u003Cthead>\u003Ctr>\u003Cth>Gamme\u003C\u002Fth>\u003Cth>Usage\u003C\u002Fth>\u003Cth>Format\u003C\u002Fth>\u003C\u002Ftr>\u003C\u002Fthead>\u003Ctbody>\u003Ctr>\u003Ctd>Pompe haute pression Bosch 0445010029\u003C\u002Ftd>\u003Ctd>\u003C\u002Ftd>\u003Ctd>\u003C\u002Ftd>\u003C\u002Ftr>\u003C\u002Ftbody>\u003C\u002Ftable>\u003Ch2>Comment choisir\u003C\u002Fh2>\u003Cp>Le choix d’une pompe haute pression pour un moteur 420 CDI 250 CV dépend de plusieurs critères techniques et logistiques, essentiels pour permettre la compatibilité et la durabilité.\u003C\u002Fp>\u003Col>\u003Cli>Calibre et puissance : Vérifier que la pompe correspond exactement à la puissance du moteur (250 CV) et au couple maximal, pour éviter toute surcharge ou sous-performance.\u003C\u002Fli>\u003Cli>Conditionnement : Privilégier les pièces livrées avec leur emballage d’origine ou un conditionnement adapté aux contraintes de stockage en atelier ou en entrepôt.\u003C\u002Fli>\u003Cli>Format de montage : S’assurer que le format de la pompe (bride, raccords, connecteurs) est compatible avec le système d’injection du véhicule, sans modification nécessaire.\u003C\u002Fli>\u003Cli>État de conservation : Pour les pièces d’échange standard, vérifier l’absence de corrosion, d’usure prématurée ou de traces de surchauffe, gages d’une longue durée de vie.\u003C\u002Fli>\u003Cli>Logistique de retour : Choisir des fournisseurs proposant un système de consigne pour la pièce usagée, facilitant la gestion des stocks et réduisant les coûts de recyclage.\u003C\u002Fli>\u003Cli>Garantie constructeur : Opter pour des pompes remanufacturées ou neuves bénéficiant d’une garantie minimale, couvrant les défauts de fabrication ou de montage.\u003C\u002Fli>\u003Cli>Disponibilité immédiate : Sélectionner des références en stock ou avec des délais de livraison courts, pour limiter les temps d’immobilisation des véhicules en atelier.\u003C\u002Fli>\u003C\u002Fol>\u003Ch2>Conservation & logistique\u003C\u002Fh2>\u003Cp>La conservation des pompes haute pression pour la catégorie 420 CDI 250 CV exige un environnement sec, à l’abri des variations de température et de l’humidité, afin de préserver leur intégrité mécanique et électronique. Les pièces doivent être stockées dans leur emballage d’origine ou dans des contenants adaptés, avec une rotation régulière pour éviter le vieillissement prématuré des joints et des composants internes. Pour les professionnels, une gestion rigoureuse des stocks permet de répondre aux urgences tout en optimisant les coûts, notamment via des systèmes de consigne pour les pièces usagées. Les commandes en gros bénéficient souvent de tarifs dégressifs, sous réserve de vérification de la TVA intracommunautaire pour les clients professionnels en Europe. Les délais de livraison varient selon la disponibilité, mais les références les plus demandées sont généralement expédiées sous 24 à 48 heures.\u003C\u002Fp>\u003Cblockquote>Chez autoKUR, nous savons que chaque pompe haute pression est un maillon essentiel de la performance moteur. Notre sélection pour la catégorie 420 CDI 250 CV est conçue pour offrir des solutions fiables, que ce soit en échange standard ou en remanufacturé, toujours avec une compatibilité vérifiée et une logistique adaptée aux professionnels.\u003Ccite>— autoKUR équipe\u003C\u002Fcite>\u003C\u002Fblockquote>\u003Ch2>Catégories associées\u003C\u002Fh2>\u003Cp>Parcourez nos autres gammes :\u003C\u002Fp>\u003Cul>\u003Cli>\u003Ca href=\"\u002Ffr\u002Fpompe-haute-pression\u002Fmercedes\u002Fclasse-m\u002Fw163\u002F270-cdi-163-cv\u002F\">270 CDI 163 CV\u003C\u002Fa>\u003C\u002Fli>\u003Cli>\u003Ca href=\"\u002Ffr\u002Fpompe-haute-pression\u002Fmercedes\u002Fclasse-m\u002Fw163\u002F300-cdi-163-cv\u002F\">300 CDI 163 CV\u003C\u002Fa>\u003C\u002Fli>\u003Cli>\u003Ca href=\"\u002Ffr\u002Finjecteur\u002F\">Injecteur\u003C\u002Fa>\u003C\u002Fli>\u003Cli>\u003Ca href=\"\u002Ffr\u002Fkit-de-joints\u002F\">Kit de joints\u003C\u002Fa>\u003C\u002Fli>\u003Cli>\u003Ca href=\"\u002Ffr\u002Fconsigne\u002F\">Consigne\u003C\u002Fa>\u003C\u002Fli>\u003Cli>\u003Ca href=\"\u002Ffr\u002Freference\u002F\">Rechercher par référence\u003C\u002Fa>\u003C\u002Fli>\u003C\u002Ful>\u003Ch2>Références utiles\u003C\u002Fh2>\u003Cp>Pour les références réglementaires et sectorielles, voir \u003Ca href=\"https:\u002F\u002Feur-lex.europa.eu\u002Flegal-content\u002FFR\u002FTXT\u002F?uri=CELEX:32010R0461\" rel=\"nofollow noopener\" target=\"_blank\">Reglement (UE) 461\u002F2010 — pieces de rechange et garantie constructeur\u003C\u002Fa>.\u003C\u002Fp>","\u002Fimg\u002Fc\u002F27860.jpg","\u002Fimg\u002Fc\u002F27860-420-cdi-250-cv-400.webp 400w, \u002Fimg\u002Fc\u002F27860-420-cdi-250-cv-600.webp 600w, \u002Fimg\u002Fc\u002F27860-420-cdi-250-cv-800.webp 800w, \u002Fimg\u002Fc\u002F27860-420-cdi-250-cv-1200.webp 1200w","(min-width: 768px) 33vw, 100vw",[547,549,552,555,558],{"label":305,"path":548},"",{"label":550,"path":551},"MERCEDES","mercedes",{"label":553,"path":554},"Classe M","mercedes\u002Fclasse-m",{"label":556,"path":557},"(W163)","mercedes\u002Fclasse-m\u002Fw163",{"label":25,"path":538},[],[561,566],{"id":562,"slug":563,"path":564,"label":565},27861,"270-cdi-163-hp","mercedes\u002Fclasse-m\u002Fw163\u002F270-cdi-163-hp","270 CDI 163 hp",{"id":567,"slug":568,"path":569,"label":570},27862,"300-cdi-163-hp","mercedes\u002Fclasse-m\u002Fw163\u002F300-cdi-163-hp","300 CDI 163 hp",{"total":70,"total_in_stock":19,"price_min":572,"price_max":572,"known":17},708.333333,[574,577,580,583,586,589,592,595,598,601,604,607,611,615,619],{"position":70,"question":575,"answer_html":576},"How much is a high-pressure pump for a MERCEDES Classe M 420 CDI 250 hp?","A remanufactured high-pressure pump for the MERCEDES Classe M 420 CDI 250 hp starts at €708.33. This engine takes a single reference, 0445010029: the price shown is the one part that fits your vehicle, with no variant to compare.",{"position":94,"question":578,"answer_html":579},"Which high-pressure pump reference fits the 420 CDI 250 hp?","The reference is 0445010029. It is what settles the match on a MERCEDES Classe M (W163) with the 420 CDI 250 hp engine — not the vehicle's trade name, nor its year.",{"position":103,"question":581,"answer_html":582},"Why is only one reference offered for the 420 CDI 250 hp?","Because this engine was built with a single high-pressure pump. Other Classe M engines carry several references depending on the production period; here the choice is unique, which rules out any risk of error.",{"position":67,"question":584,"answer_html":585},"Where is the reference found on a high-pressure pump removed from a Classe M (W163)?","It is stamped on the nameplate. The plate stays readable even on a pump fouled with diesel. It is the only reading that confirms the match with 0445010029.",{"position":120,"question":587,"answer_html":588},"What happens to the old pump from a MERCEDES Classe M 420 CDI 250 hp?","Part 0445010029 is sold as an exchange unit: it has already been rebuilt with new components and pressure-tested, and the pump you remove goes back into the reconditioning circuit. Return terms are stated at checkout.",{"position":29,"question":590,"answer_html":591},"How does exchange pump 0445010029 differ from a new part?","An exchange high-pressure pump is an original part rebuilt with new components, then pressure-tested on a bench. It carries the same reference, 0445010029, and fits in place of the part removed — at a cost that bears no comparison with a new pump.",{"position":137,"question":593,"answer_html":594},"Does pump 0445010029 fit every Classe M (W163)?","No: it matches Classe M (W163) models fitted with the 420 CDI 250 hp engine. A Classe M (W163) running on petrol, or at a different diesel power output, takes another reference.",{"position":146,"question":596,"answer_html":597},"Is the year of my Classe M enough to choose the high-pressure pump?","No. Two Classe M of the same year can take different pumps depending on their engine. It is the engine-and-power pairing — here 420 CDI 250 hp — that determines the reference, and the code on the nameplate that confirms it.",{"position":155,"question":599,"answer_html":600},"How do I spot a failing high-pressure pump on a Classe M 420 CDI 250 hp?","On this diesel engine, a weakening pump shows up as long cranking, hesitation on pick-up, power loss under load and a drop into limp mode. These signs overlap with other fuel system faults: diagnosis is a job for a qualified technician.",{"position":164,"question":602,"answer_html":603},"Why does my Classe M 420 CDI 250 hp go into limp mode?","On this 420 CDI 250 hp, the ECU limits the engine when rail pressure no longer reaches the value expected for the 250 hp rated output. A high-pressure pump that can no longer hold pressure is one possible cause, alongside a clogged filter or a faulty regulator.",{"position":171,"question":605,"answer_html":606},"What does exhaust smoke mean on a 420 CDI 250 hp?","On this 420 CDI 250 hp diesel engine, black smoke means an over-rich burn and white smoke unburnt fuel — both of which irregular rail pressure can produce. Colour guides the diagnosis, it does not replace it.",{"position":608,"question":609,"answer_html":610},12,"Does long cranking always come from the high-pressure pump?","No. Long cranking can come from the pump itself, but equally from the fuel filter, the pressure regulator or the common rail. The symptom alone is not enough to condemn the part.",{"position":612,"question":613,"answer_html":614},13,"Which common rail pump family does this engine take?","The Bosch CP1, CP3 and CP4 families are covered, and it is reference 0445010029 that identifies the one fitted from new on this 420 CDI 250 hp. The family alone is not enough to order: the code on the nameplate settles it.",{"position":616,"question":617,"answer_html":618},14,"How do I confirm the fault before ordering pump 0445010029?","By a fault code read and a rail pressure check, carried out by a qualified technician, before any order of reference 0445010029. That check separates a failed pump from a clogged filter or a leaking injector — three faults with similar symptoms but different remedies.",{"position":620,"question":621,"answer_html":622},15,"Does pump 0445010029 fit straight onto a 420 CDI 250 hp?","Yes: reference 0445010029 is the original fitment for a MERCEDES Classe M (W163) with the 420 CDI 250 hp engine. It keeps the drive, the mounting and the connections of the part removed. Fitting is a job for a qualified automotive technician.",[],{"articles":625,"total":58,"limit":146},[],{"siloRdv":627},{"enabled":17,"repeatEvery":628,"position":629,"ctaLabel":19},16,"top",{"ok":17,"alternates":631},{"en":532,"fr":533,"de":534},{"products":633,"total":70,"offset":58,"limit":70,"hasMore":49},[634],{"id":635,"ref":636,"name":637,"slug":638,"price":639,"priceRaw":640,"image":641,"imageSrcset":642,"url":643,"unitLabel":184,"stockQuantity":185,"taxRate":192},56,"0445010029","High-pressure pump Bosch 0445010029","high-pressure-pump-bosch-0445010029","850,00 €",850,"\u002Fimg\u002Fp\u002F9\u002F5\u002F6\u002F6\u002F1\u002F95661-high-pressure-pump-bosch-0445010029-600.webp","\u002Fimg\u002Fp\u002F9\u002F5\u002F6\u002F6\u002F1\u002F95661-high-pressure-pump-bosch-0445010029-400.webp 400w, \u002Fimg\u002Fp\u002F9\u002F5\u002F6\u002F6\u002F1\u002F95661-high-pressure-pump-bosch-0445010029-600.webp 600w, \u002Fimg\u002Fp\u002F9\u002F5\u002F6\u002F6\u002F1\u002F95661-high-pressure-pump-bosch-0445010029-800.webp 800w, \u002Fimg\u002Fp\u002F9\u002F5\u002F6\u002F6\u002F1\u002F95661-high-pressure-pump-bosch-0445010029-1200.webp 1200w","\u002Fhigh-pressure-pump\u002Fhigh-pressure-pump-bosch-0445010029-56"]