{"product_id":"genuine-bmw-e30-e36-e38-e46-380mm-ground-cable-inc-330i-m3-750i-z4-m3-2","title":"Genuine BMW Battery Negative Cable 380mm | Earth Strap \/ Ground Wire \/ Chassis Ground Lead | Fits E30 E36 E46 E34 E39 E32 E38 E31 Z3 Z4 (330i M3 750i Z4 M 3.2) | OEM 12421737755","description":"\u003cdiv class=\"product__description rte\"\u003e\n  \u003ch2\u003eBMW 380 mm Earth Bonding Lead, Negative Return Cable, Chassis Earthing Strap | OE Part 12421737755\u003c\/h2\u003e\n\n  \u003cp\u003eRestore crisp starting and stable charging on your classic BMW with this authentic factory earthing lead. This 380 mm negative pole cable links the battery to the body shell for a clean chassis return and low resistance across the electrical system. Direct replacement, OE build, BMW part number \u003cstrong\u003e12421737755\u003c\/strong\u003e.\u003c\/p\u003e\n\n  \u003cp\u003eWe have installed this on our own builds and countless customer cars with excellent results. Owners report quicker cranking, steadier voltage, brighter lights and fewer random electrical gremlins after swapping out a tired, corroded strap. Ideal preventative maintenance when refreshing a starter motor, alternator or battery.\u003c\/p\u003e\n\n  \u003ch3\u003eWhy this OEM lead is a smart upgrade\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eFactory-spec fit for fast, hassle free installation\u003c\/li\u003e\n    \u003cli\u003eRestores a strong chassis return path for consistent ignition performance\u003c\/li\u003e\n    \u003cli\u003eReduces resistance and voltage drop caused by aged or oxidised earth links\u003c\/li\u003e\n    \u003cli\u003eCorrect 380 mm length with robust copper core and OE terminals\u003c\/li\u003e\n    \u003cli\u003ePerfect for reliability upgrades, restoration work and routine servicing\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eVehicle applications\u003c\/h3\u003e\n  \u003cp\u003eSuits a wide range of BMW E chassis models and body styles:\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e3 Series\n      \u003cul\u003e\n        \u003cli\u003eE30 saloon, coupe, convertible, touring\u003c\/li\u003e\n        \u003cli\u003eE36 saloon, compact, coupe, convertible, touring\u003c\/li\u003e\n        \u003cli\u003eE46 saloon, compact, coupe, convertible, touring including 330i and M3\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e5 Series\n      \u003cul\u003e\n        \u003cli\u003eE34 saloon and touring\u003c\/li\u003e\n        \u003cli\u003eE39 saloon and touring\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e7 Series\n      \u003cul\u003e\n        \u003cli\u003eE32\u003c\/li\u003e\n        \u003cli\u003eE38 including 750i\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e8 Series\n      \u003cul\u003e\n        \u003cli\u003eE31\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/li\u003e\n    \u003cli\u003eZ models\n      \u003cul\u003e\n        \u003cli\u003eZ3 E36 roadster and coupe\u003c\/li\u003e\n        \u003cli\u003eZ4 E85 and E86 including Z4 M 3.2\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eTech details\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eLength 380 mm\u003c\/li\u003e\n    \u003cli\u003eBMW OE part number \u003cstrong\u003e12421737755\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGenuine BMW component for long term durability and correct fitment\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWhen to replace your earthing lead\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eSlow or intermittent cranking, especially when cold\u003c\/li\u003e\n    \u003cli\u003eDim lights or fluctuating voltage at idle\u003c\/li\u003e\n    \u003cli\u003eVisible corrosion, cracked insulation or stiff, heat damaged cable\u003c\/li\u003e\n    \u003cli\u003eIntermittent electrical faults after engine or battery work\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eProfessional fitting\u003c\/h3\u003e\n  \u003cp\u003eWant it installed properly the first time. Book our expert workshop. MJ Modifications, Warwickshire. Request a quote at \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e.\u003c\/p\u003e\n\n  \u003ch3\u003eCompatibility check\u003c\/h3\u003e\n  \u003cp\u003eWe verify fitment before dispatch. Add your UK registration or the last 7 digits of your VIN at checkout so we can confirm this part suits your vehicle.\u003c\/p\u003e\n\n  \u003ch3\u003eWarranty\u003c\/h3\u003e\n  \u003cp\u003eTwo year manufacturer warranty for UK customers and one year for international customers when a VIN is provided at checkout on compatible vehicles.\u003c\/p\u003e\n\n  \u003chr\u003e\n\n  \u003cp\u003e\u003csmall\u003eSearch phrases: BMW earth bonding lead, BMW negative pole cable, BMW ground wire, BMW chassis return strap, BMW earthing cable 380 mm, E30 earthing strap, E36 ground wire, E46 earth lead 330i, M3 earthing cable, E38 return cable 750i, E34 E39 grounding strap, E32 E31 earth link, Z3 earthing wire, Z4 M 3.2 battery earth cable, BMW OE 12421737755.\u003c\/small\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BMW","offers":[{"title":"Default Title","offer_id":55975895892354,"sku":null,"price":41.09,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/GenuineBMWE30E36E38E46380mmGroundCable_Inc.330i_M3_750i_Z4M3.2_-1_1946x_0c19c5e3-dbf1-4340-baec-2452411ef48e.png?v=1763323108","url":"https:\/\/mjmodifications.co.uk\/products\/genuine-bmw-e30-e36-e38-e46-380mm-ground-cable-inc-330i-m3-750i-z4-m3-2","provider":"MJ Modifications","version":"1.0","type":"link"}