{"product_id":"original-bosch-bmw-e12-e21-e28-auxiliary-air-slide-valve-0280140100","title":"Original Bosch BMW E12 \/ E21 \/ E28 Auxiliary Air Slide Valve – 0280140100","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eOriginal used Bosch auxiliary air slide valve for classic BMW models equipped with an early Bosch fuel-injection system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis particular component was removed from a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eBMW E28 528i\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Bosch number \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e0 280 140 100\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is officially cross-referenced with BMW part number \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e13631357891\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, which is catalogued primarily for the BMW E12 520i and E21 320i.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe auxiliary air slide valve allows additional air to bypass the throttle valve while the engine is cold. This increases the cold idle speed and helps the engine run smoothly during its warm-up period. As the internal heating element warms the valve, the air passage gradually closes and the idle speed returns to its normal level.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eOriginal Bosch auxiliary air valves are discontinued and increasingly difficult to find.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eProduct details\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eProduct: Auxiliary air slide valve\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAlternative descriptions: Auxiliary air valve, additional air slide, cold-start air regulator\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGerman description: Zusatzluftschieber\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eManufacturer: Bosch\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eBMW part number: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e13631357891\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eFormatted BMW number: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e13 63 1 357 891\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eShort BMW reference number: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e1357891\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eBosch part number: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e0 280 140 100\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eBosch number without spaces: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e0280140100\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFuel system: Bosch fuel injection\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFunction: Provides additional bypass air during cold running\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInstallation position: Engine intake and fuel-injection system\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMaterial: Cast-metal housing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDonor vehicle: BMW E28 528i\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCondition: Used\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eQuantity: One\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eVehicle compatibility\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cspan\u003eCatalogue-confirmed BMW applications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBosch number 0 280 140 100 and BMW number 13631357891 are officially associated with selected versions of:\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cspan\u003eBMW 5 Series E12\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBMW 520i with M10 fuel-injection engine\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBMW 520i with M20 fuel-injection engine\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSelected European and market-specific 520i versions using the corresponding Bosch system\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cspan\u003eBMW 3 Series E21\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBMW 320i with the corresponding early Bosch fuel-injection system\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eKnown donor application\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch4\u003e\u003cspan\u003eBMW 5 Series E28\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eThis exact used component was removed from a BMW E28 528i\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe donor information confirms that this valve was physically installed on and removed from an E28 528i. However, Bosch number 0 280 140 100 is not the normal catalogue-listed Bosch number for every E28 528i.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eDepending on production date, market and fuel-injection specification, the E28 528i is more commonly associated with other calibrated Bosch auxiliary air valves, including:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eBosch 0 280 140 133\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – commonly listed for European E28 525i and 528i applications\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eBosch 0 280 140 124\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – found on selected earlier 528i and related M30 fuel-injection applications\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eBMW 13631272103\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – BMW reference associated with Bosch 0 280 140 124 in selected applications\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBosch auxiliary air valves may share the same general housing shape, electrical connection, mounting arrangement and hose diameters while having different internal opening sizes, temperature characteristics and warm-up calibration.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFor an E28 528i, this valve should therefore only be purchased after comparing the Bosch number, hose connections, electrical connector, mounting bracket and cold-air opening with the original valve.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eImportant compatibility information\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCompatibility depends on:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eVehicle model\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eProduction date\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMarket specification\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEngine type\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFuel-injection system\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOriginal Bosch valve number\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAir-hose diameter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMounting arrangement\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eElectrical connection\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInternal cold-idle calibration\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe fact that this component was removed from an E28 528i confirms a previous installation but does not guarantee that Bosch 0 280 140 100 was the original factory-specified valve for that particular vehicle.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAlways compare the complete component with the valve currently fitted to the vehicle before ordering.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eBMW and Bosch numbers\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003e13631357891\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – BMW additional air slide valve\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003e13 63 1 357 891\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Formatted BMW catalogue number\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003e1357891\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Short BMW reference number\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003e0 280 140 100\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Bosch manufacturer number\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003e0280140100\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Bosch number without spaces\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eRelated BMW M30 auxiliary air valve references that are not identical to the supplied component include:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003e0 280 140 124\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003e0 280 140 133\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003e13631272103\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThese related numbers are included for comparison only and should not automatically be treated as identical replacements.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eOther Bosch applications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBosch 0 280 140 100 was also used in selected non-BMW vehicles equipped with Bosch fuel injection, including certain Audi, Opel, Porsche, Renault and Volvo applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAlthough the general valve construction may be similar, calibration and vehicle-specific suitability can differ. Compatibility with non-BMW vehicles is not guaranteed by this listing.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eCondition\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eOriginal used Bosch component with visible age- and use-related wear, including:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eDirt and storage residue\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOxidation across the cast-metal housing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSurface discolouration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMarks and wear around the air connections\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCosmetic wear on the mounting bracket\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAge-related wear consistent with an original fuel-injection component\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWear and ageing to the accompanying identification tag\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe valve has not been cleaned, restored or function-tested.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe condition of the internal air slide and electrical heating element is unknown. Inspection and testing are required before installation. Supplied exactly as shown in the photographs.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eIncluded\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eOne original Bosch auxiliary air slide valve\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIntegrated mounting bracket\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eExisting electrical connection\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eExisting air-hose connections\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOld handwritten donor identification tag\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSupplied exactly as pictured\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eNo air hoses, hose clamps, wiring plug, mounting bolts, nuts, gaskets or other installation components are included.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eTesting and installation recommendation\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBefore installation:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eVerify Bosch number 0 280 140 100\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCompare the valve with the original component\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInspect the metal housing and hose connections for damage\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCheck that the air passage is open while the valve is cold\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMeasure the resistance of the internal heating element\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBench-test the valve using the correct electrical supply\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConfirm that the internal air passage gradually closes as the valve warms up\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCheck that it closes completely within the correct warm-up period\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eClean the internal air passage carefully\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eReplace deteriorated air hoses and clamps\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCheck the complete intake system for vacuum leaks after installation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConfirm the cold and warm idle speed after fitting\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIf the valve remains permanently open, does not allow sufficient air through when cold or does not close when heated, professional overhaul may be required.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eInstallation and testing should preferably be performed by someone familiar with early Bosch fuel-injection systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eStorage location:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 203\u003c\/span\u003e\u003c\/p\u003e","brand":"Tayushi","offers":[{"title":"Default Title","offer_id":57479218004343,"sku":null,"price":100.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0968\/3704\/2551\/files\/D2D97F65-C4F8-4837-87A8-14CD0F714A66_1_105_c.jpg?v=1790015241","url":"https:\/\/www.tayushi.com\/nl\/products\/original-bosch-bmw-e12-e21-e28-auxiliary-air-slide-valve-0280140100","provider":"Tayushi","version":"1.0","type":"link"}