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Genuine BMW M3 Spark Plug Wires
Spark Plug Ignition Wires- Select Vehicle by Model
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3 Spark Plug Wires found
BMW M3 Ignition Wire
Part Number: 12121705675$26.28 MSRP: $28.77You Save: $2.49 (9%)Ships in 1-3 Business Days
BMW M3 Ignition Wiring
Part Number: 12121311803$435.87 MSRP: $574.12You Save: $138.25 (25%)Ships in 1-3 Business Days
BMW M3 Spark Plug Wires
The BMW M3 Spark Plug Wires also facilitate the flow of high-voltage electricity from the ignition coil or distributor to the spark plugs. In this way, a quick and clean burn of the air-fuel mixture occurs in the engine, and it fires up without delay. Wires with a proven conductive core engineered by BMW are wrapped in silicone or EPDM insulation, plus fiberglass reinforcement and a heat resistant outer jacket. Therefore, they resist arcing, heat, and chemicals while keeping electromagnetic noise away. Thus, radios and engine electronics cooperate perfectly. Earlier M3 models that were running a distributor applied full length Spark Plug Wires connected to the cap. However, later M3 models that were distributorless ignition applied coil packs that feed two cylinders. This shortened the overall quantity of wires but still kept a pair of Spark Plug Wires per coil. Presently, generations that utilize coil near the plug layouts rely on very short Spark Plug Wires that connect each dedicated coil to its plug. This reduces overall resistance, weight, and clutter. BMW requires that suppressor designs that use carbon, spiral core, or fixed resistor technologies suppress RFI without reducing voltage too excessively. BMW wants their use to be replaced in a timely manner whenever their age, heat, abrasion, etc., raises resistance and invites misfiring. By frequently checking the BMW M3 Spark Plug Wires for cracks or burns, drivers can catch problems early on, preventing performance drops.
If you are looking for OEM BMW M3 Spark Plug Wires, we highly recommend to shop with us. Not only do we offer budget friendly prices, but we also provide fast delivery. In addition, we have a hassle-free return policy on all genuine BMW M3 Spark Plug Wires that come backed by the manufacturer's warranty.
BMW M3 Spark Plug Wires Parts Questions & Experts Answers
- Q:How to check and replace spark plug wires, distributor cap, and rotor on BMW M3?Posted by Jan C.A:Every time you tune-up or at the time of inspection, make sure that you carry out a visual check for burns, cuts or cracks in the wires' insulation. Also, inspect boots and nipples on distributor cap or coil then replace any damaged wiring. In order to ascertain their resistance levels, an ohmmeter should be used to measure the Spark Plug wire every 50,000 miles or 60 months. This is because wires having increased resistance will result in misfiring thereby making it hard for an engine to start during damp weather. Spark plug wire resistance should fall within a range of 4500-5500 ohms. While removing and installing spark plug wires, switch off ignition then take off the wires from the distributor cap. Remove the wires from plugs and disconnect ignition leads from ignition coil. Reverse installation procedure ensuring that wires are routed properly and snap into place on the coil as well as on spark plugs. When removing or replacing a distributor cap and rotor ensure that no damage occurs by positioning thin cardboard between radiator and fan with ignitions off.Locate all wires just as they were originally before labeling them so that after finally removing distributor caps these can be removed easily from there.Remove screws while checking if seal is still okay otherwise change it.Screw out hex head bolts to take out rotor.Put rotor onto its shaft again tightening hex head bolts.Reinstall distributor cap together with seal fastening mounting screws.Replace ignition leadings at the right terminals also put cover under clip.Check both cap as well as rotor for any indication of burning, excessive corrosion on contacts or carbon tracks which needs replacement.The timing of ignition in some models of BMW cannot be adjusted manually since it is automatically controlled by DME control unit according to engine conditions.Answered by BMW Parts Specialist Blaine / Apr 03, 2026
