{"product_id":"ms43-ms42-bench-harness","title":"MS43 MS42 Bench Harness","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp style=\"font-size: 13px; color: #888; letter-spacing: 0.04em; text-transform: uppercase; margin: 0 0 12px;\"\u003eBMW Modifications \/ ECU Tools \u0026amp; Hardware\u003c\/p\u003e\n\u003c!-- Compatibility badges --\u003e\n\u003cp style=\"margin: 0 0 20px; font-size: 14px; color: #555;\"\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e E36  · E46  ·  E39  ·  X3  ·  X5  ·  Z3\u003c\/p\u003e\n\u003c!-- Overview --\u003e\n\u003ch2 style=\"font-size: 16px; font-weight: 600; margin: 0 0 10px;\"\u003eOverview\u003c\/h2\u003e\n\u003cp style=\"font-size: 14px; color: #444; line-height: 1.7; margin: 0 0 10px;\"\u003eThis is a ready-made bench harness for the Siemens MS42 and MS43 ECU. It breaks out all necessary connectors to power and flash the ECU on the bench — fully outside the vehicle. No splicing, no fabrication required.\u003c\/p\u003e\n\u003cp style=\"font-size: 14px; color: #444; line-height: 1.7; margin: 0 0 24px;\"\u003eDesigned for anyone doing ECU programming, ISN\/VIN work, or flashing on a used unit before install. Works with a standard 12V bench supply or car battery and is compatible with common MS42\/MS43 flashing tools.\u003c\/p\u003e\n\u003c!-- Compatibility grid --\u003e\n\u003ch2 style=\"font-size: 16px; font-weight: 600; margin: 0 0 12px;\"\u003eCompatibility\u003c\/h2\u003e\n\u003ctable height=\"99\" style=\"width: 99.1071%; border-collapse: collapse; font-size: 13px; margin-bottom: 24px; height: 64.5625px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: rgb(245, 245, 245); height: 18.1875px;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: 600; width: 30.0537%; height: 18.1875px;\"\u003eEngine\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; width: 69.9463%; height: 18.1875px;\"\u003eBMW M52TU \/ M54B25 \/ M54B30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 18.1875px;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: 600; background: rgb(245, 245, 245); width: 30.0537%; height: 18.1875px;\"\u003eECU\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; width: 69.9463%; height: 18.1875px;\"\u003eSiemens MS42 \u0026amp; MS43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: rgb(245, 245, 245); height: 18.1875px;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: 600; width: 30.0537%; height: 18.1875px;\"\u003eChassis\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; width: 69.9463%; height: 18.1875px;\"\u003eE36, E46, E39, E60, X3, X5, Z3, Z4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c!-- What's included --\u003e\n\u003ch2 style=\"font-size: 16px; font-weight: 600; margin: 0 0 12px;\"\u003eWhat's included\u003c\/h2\u003e\n\u003cul style=\"font-size: 14px; color: #444; line-height: 1.8; padding-left: 20px; margin: 0 0 24px;\"\u003e\n\u003cli\u003ePre-built bench harness with MS42\/MS43 ECU connector(s)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePinout reference and bench setup instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- How to use --\u003e\n\u003ch2 style=\"font-size: 16px; font-weight: 600; margin: 0 0 12px;\"\u003eHow to use\u003c\/h2\u003e\n\u003col style=\"font-size: 14px; color: #444; line-height: 1.8; padding-left: 20px; margin: 0 0 24px;\"\u003e\n\u003cli\u003ePlug the harness into your MS42 or MS43 ECU\u003c\/li\u003e\n\u003cli\u003eConnect the power leads to a 12V bench supply\u003c\/li\u003e\n\u003cli\u003eConnect your flashing tool and flash as normal — no vehicle required\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c!-- Shipping --\u003e\n\u003ch2 style=\"font-size: 16px; font-weight: 600; margin: 0 0 12px;\"\u003eShipping\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 13px; margin-bottom: 24px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f5f5f5;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: 600; width: 40%;\"\u003eFulfillment\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003eShips within 1–3 business days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: 600; background: #f5f5f5;\"\u003eCarrier\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003eUSPS Priority Mail with tracking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f5f5f5;\"\u003e\n\u003ctd style=\"padding: 8px 12px; font-weight: 600;\"\u003eShips from\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px;\"\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c!-- No returns notice --\u003e\n\u003cp style=\"font-size: 13px; color: #888; margin: 0; line-height: 1.6;\"\u003eHave a question before purchasing? \u003ca href=\"\/pages\/contact\" style=\"color: #333;\"\u003eContact us\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Bimmer EWS","offers":[{"title":"Default Title","offer_id":47360279412930,"sku":null,"price":75.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0744\/2740\/0386\/files\/harness.png?v=1775610779","url":"https:\/\/checkout.bimmerews.com\/products\/ms43-ms42-bench-harness","provider":"Bimmer EWS","version":"1.0","type":"link"}