{"product_id":"bosch-warmlaufregler-0438140071-bmw-e21-318i-320i-323i-m10-m20-k-jetronic-79-83","title":"Bosch warm-up regulator 0438140071 BMW E21 318i 320i 323i M10 M20 K-Jetronic 79-83","description":"\u003cdiv style=\"background:#242833;border-radius:8px;padding:18px 20px;margin:0 0 14px;color:#ffffff;\"\u003e\n\u003cp style=\"margin:0 0 8px;\"\u003e\u003cstrong style=\"color:#c69a3a;\"\u003eRefurbished genuine Bosch warm-up regulator, professionally overhauled and tested.\u003c\/strong\u003e Refurbished genuine Bosch warm-up regulator 0438140071 for the K-Jetronic injection system of the BMW E21 318i, 320i and 323i with engine M10 or M20. Completely disassembled, cleaned, fitted with a new diaphragm and new seals, and set on the test bench.\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#cfd3dc;\"\u003eCompletely disassembled and cleaned in an ultrasonic bath  ·  New diaphragm and new seals fitted  ·  \u003cstrong style=\"color:#c69a3a;\"\u003e5-year warranty\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"margin:0 0 14px;\"\u003e\u003cspan style=\"display:inline-block;background:#f5f6f8;border:1px solid #c69a3a;border-radius:8px;padding:5px 12px;margin:2px 6px 2px 0;font-weight:600;\"\u003eControl pressure ✓\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#f5f6f8;border:1px solid #c69a3a;border-radius:8px;padding:5px 12px;margin:2px 6px 2px 0;font-weight:600;\"\u003eHeating resistor ✓\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#f5f6f8;border:1px solid #c69a3a;border-radius:8px;padding:5px 12px;margin:2px 6px 2px 0;font-weight:600;\"\u003eSprings ✓\u003c\/span\u003e\u003cbr\u003eSprings, heating resistor and control pressure were tested; the regulator was then set on the test bench to genuine Bosch specification and the pressure values were recorded.\u003c\/p\u003e\n\n\u003cdiv style=\"background:#f5f6f8;border-left:4px solid #c69a3a;border-radius:8px;padding:14px 18px;margin:0 0 16px;\"\u003e\n\u003cp style=\"margin:0 0 6px;font-weight:700;\"\u003e5-year warranty on this refurbished warm-up regulator\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003eShould there be a problem: send the regulator in – we will repair or replace it. In addition, a 60-day return policy and free shipping within Germany apply.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;margin:0 0 16px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:8px 6px;border-bottom:2px solid #242833;\"\u003eYour options\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:8px 6px;border-bottom:2px solid #242833;\"\u003eCondition\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:8px 6px;border-bottom:2px solid #242833;\"\u003eWarranty\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 6px;border-bottom:1px solid #e3e5e9;\"\u003eNew part from Bosch\u003c\/td\u003e\n\u003ctd style=\"padding:8px 6px;border-bottom:1px solid #e3e5e9;\"\u003eno longer manufactured\u003c\/td\u003e\n\u003ctd style=\"padding:8px 6px;border-bottom:1px solid #e3e5e9;\"\u003e–\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 6px;border-bottom:1px solid #e3e5e9;\"\u003eUntested used regulator\u003c\/td\u003e\n\u003ctd style=\"padding:8px 6px;border-bottom:1px solid #e3e5e9;\"\u003eControl pressure and diaphragm condition unknown\u003c\/td\u003e\n\u003ctd style=\"padding:8px 6px;border-bottom:1px solid #e3e5e9;\"\u003enone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f6f8;\"\u003e\n\u003ctd style=\"padding:8px 6px;font-weight:700;\"\u003e\u003cstrong\u003eRefurbished genuine part (this listing)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 6px;font-weight:700;\"\u003edisassembled, cleaned in an ultrasonic bath, new diaphragm, set on the test bench\u003c\/td\u003e\n\u003ctd style=\"padding:8px 6px;font-weight:700;\"\u003e5 years ✓\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eHow can you tell a warm-up regulator is faulty?\u003c\/h3\u003e\n\n\u003cp\u003eThe warm-up regulator is part of the Bosch K-Jetronic injection system. As a control-pressure regulator, it lowers the control pressure when the engine is cold and thereby enriches the mixture during the warm-up phase. It is electrically heated to adapt the regulation to the engine's characteristics.\u003c\/p\u003e\n\n\u003cp\u003eIf the regulator is faulty, this mixture enrichment during the warm-up phase is missing, because the control pressure is no longer correctly regulated.\u003c\/p\u003e\n\n\u003cp\u003eDetailed diagnostic guide in our guide: \u003ca href=\"\/en\/blogs\/mercedes-tacho-reparatur\/warmlaufregler-defekt-symptome-pruefung\"\u003eWarm-up regulator defective? Symptoms, testing and solution\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch3\u003eWhat was done during refurbishment\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eComplete disassembly into all individual parts\u003c\/li\u003e\n\u003cli\u003eCleaning in an ultrasonic bath\u003c\/li\u003e\n\u003cli\u003eNew diaphragm fitted\u003c\/li\u003e\n\u003cli\u003eSprings tested and replaced if needed\u003c\/li\u003e\n\u003cli\u003eAll seals renewed\u003c\/li\u003e\n\u003cli\u003eHeating resistor tested for function\u003c\/li\u003e\n\u003cli\u003eSet on the test bench to genuine Bosch specification\u003c\/li\u003e\n\u003cli\u003ePressure values recorded\u003c\/li\u003e\n\u003cli\u003eSupplied with new copper sealing rings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFits the following vehicles\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eBMW 3 Series E21 (1975–1983) — fuel-injected versions with K-Jetronic\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e318i E21 — 77 kW (105 hp), 1.8 l, engine M10 B18, model year 1979–1983\u003c\/li\u003e\n\u003cli\u003e320i E21 — 75 kW (102 hp), 2.0 l, engine M20 B20 (small six-cylinder), model year 09.1979 – 01.1983\u003c\/li\u003e\n\u003cli\u003e323i E21 — 105 kW (143 hp), 2.3 l, engine M20 B23 (small six-cylinder), model year 1978–1982\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eDuring Bosch spare parts shortages, this part was officially replaced by the 0438140014; both numbers are compatible with each other.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart numbers:\u003c\/strong\u003e Bosch 0438140071 · BMW 13 63 1 271 662 · Replacement number in case of shortage 0438140014\u003c\/p\u003e\n\n\u003cdiv style=\"background:#f5f6f8;border-left:4px solid #c69a3a;border-radius:8px;padding:14px 18px;margin:0 0 16px;\"\u003e\n\u003cp style=\"margin:0 0 6px;font-weight:700;\"\u003e⚠ Important: compare the part number before buying\u003c\/p\u003e\n\u003cp style=\"margin:0 0 8px;\"\u003eEarlier BMW E21 models before model year 1978\/79 were fitted with other warm-up regulators (e.g. 0438140005 or 0438140014), and the later BMW E30 series uses other regulator variants. Carburetor versions (315, 316, 318, 320, 320\/6) do not need this regulator, as it is intended exclusively for the fuel-injected models with the \"i\" designation. During Bosch spare parts shortages, this part was officially replaced by the 0438140014; both numbers are compatible with each other. Before buying, please compare the Bosch number on your old part exactly with the part number given above.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 4px;font-weight:600;\"\u003eDoes not fit:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEarlier BMW E21 before model year 1978\/79 (other warm-up regulators fitted, e.g. 0438140005 or 0438140014)\u003c\/li\u003e\n\u003cli\u003eLater BMW E30 series (other regulator variants)\u003c\/li\u003e\n\u003cli\u003eCarburetor versions (315, 316, 318, 320, 320\/6) — only for fuel-injected models with the \"i\" designation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes this part fit your car?\u003c\/strong\u003e Send us the VIN (chassis number) and model year – we'll check it for free: \u003ca href=\"tel:+491798991069\"\u003e0179 8991069\u003c\/a\u003e (Mon–Fri 8 am–6 pm) or via our \u003ca href=\"\/en\/pages\/contact?thema=Ersatzteil\"\u003econtact form\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\n\u003ch4\u003eWhat warranty is provided?\u003c\/h4\u003e\n\n\u003cp\u003e5-year warranty on this refurbished regulator. If there is a problem, send it in – we will repair or replace it. In addition, a 60-day return policy and free shipping within Germany apply.\u003c\/p\u003e\n\n\u003ch4\u003eDoes the regulator fit my vehicle?\u003c\/h4\u003e\n\n\u003cp\u003eCompare the Bosch number on your old part with the part number 0438140071 given above to make sure the regulator fits. If you are unsure, send us the VIN (chassis number) and model year – we will check it for free.\u003c\/p\u003e\n\n\u003ch4\u003eWhat was done to the regulator?\u003c\/h4\u003e\n\n\u003cp\u003eThe regulator was completely disassembled, cleaned in an ultrasonic bath, and fitted with a new diaphragm as well as new seals. Springs and heating resistor were tested, and it was then set on the test bench to genuine Bosch specification and the pressure values were recorded.\u003c\/p\u003e\n\n\u003ch4\u003eWhy not a new part?\u003c\/h4\u003e\n\n\u003cp\u003eBosch no longer supplies new warm-up regulators. That is why we offer refurbished genuine parts.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKFZTeile-Thot\u003c\/strong\u003e specializes in spare parts for Mercedes classic cars and classics – with in-house refurbishment for Bosch K-Jetronic components.\u003c\/p\u003e","brand":"Bosch","offers":[{"title":"Default Title","offer_id":54850904719689,"sku":"60733","price":499.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0913\/5344\/8777\/files\/57_048b8885-ce70-4c6f-8e3d-2d025dfa80ab.jpg?v=1787305708","url":"https:\/\/kfzteile-thot.de\/en\/products\/bosch-warmlaufregler-0438140071-bmw-e21-318i-320i-323i-m10-m20-k-jetronic-79-83","provider":"KFZTeile-Thot","version":"1.0","type":"link"}