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Genuine BMW Z3 Spark Plug
Ignition Spark Plug- Select Vehicle by Model
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6 Spark Plugs found
BMW Z3 Spark Plugs
Part Number: 12120037607$27.78 MSRP: $38.02You Save: $10.24 (27%)Ships in 1-2 Business Days
BMW Z3 Spark Plug
Part Number: 12129063428$15.47 MSRP: $21.17You Save: $5.70 (27%)Ships in 1-3 Business Days
BMW Z3 Spark Plug
Part Number: 12129064619$15.47 MSRP: $21.17You Save: $5.70 (27%)Ships in 1-3 Business Days
BMW Z3 Spark Plug
Part Number: 12129064617$15.47 MSRP: $21.17You Save: $5.70 (27%)Ships in 1-3 Business Days
BMW Z3 High Power Spark Plug
Part Number: 12120141871$27.78 MSRP: $38.02You Save: $10.24 (27%)Ships in 1-3 Business Days
BMW Z3 Spark Plug
The Spark Plug of BMW Z3 ignites the compressed air and fuel inside the Z3 roadster's engine, firing it up. Each Spark Plug screws into the cylinder head and receives up to 45,000 volts from the ignition coil. This voltage jumps the precisely gapped distance to the side electrode and starts combustion hundreds of times per minute even at idle. Having a well-maintained Spark Plug ensures low emissions and effective throttle response. Every BMW Z3 is engineered to ensure that the right heat range keeps the tip hot enough to burn off deposits but cool enough to avoid pre-ignition. Thus, wear or contamination that gradually widens the gap weakens the spark from a failing Spark Plug. This ultimately causes rough idle, hesitant starts, and jerky acceleration. The wear and tear on Spark Plugs occurs at similar rates, so getting all six replaced ensures equal firing and a smoother running engine. Older Z3 models had one single ground electrode while the later BMWs could accept sophisticated forms that applied multiple ground electrodes or surface-discharge patterns that share the erosion and last longer. Using the correct Spark Plug type at the right intervals sustains BMW performance and economy.
If you are looking for OEM BMW Z3 Spark Plug, 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 Z3 Spark Plug that come backed by the manufacturer's warranty.
BMW Z3 Spark Plug Parts Questions & Experts Answers
- Q:What are the components and functions of a typical spark plug on BMW Z3?Posted by Kehinde A.A:A regular spark plug has a metal shell, ceramic insulator and metal electrode that passes through the insulator with a side electrode connected to the outside shell. The spark plug gap between these electrodes is critical. It does not produce a spark but allows for current arcing, resulting from ignition coil transmitting high voltage to the spark plugs, which in turn initiates combustion of air/fuel mixtures inside the combustion chamber. Heat range of a spark plug affects its heat dissipation ability; deeper insulator position makes it run hotter while shallow one cools it down. An incorrect heat range may cause carbon deposits, fouling or pre-ignition. Replacement intervals depend on mileage and driving conditions with BMWs Inspection II maintenance usually falling between 30,000-40,000 miles. Furthermore, if vehicles have aluminum cylinder heads then replacement of spark plugs every two to four years is recommended due to possible corrosion. Some BMWs employ high-performance platinum spark plugs offering such advantages like better fuel efficiency and more reliable cold starts as well as reduced misfire rates. During inspection process carbon deposit could mean adjustment problems; oil fouling might indicate engine issues; damaged plug might suggest detonation. Take caution to remove one at a time in order to maintain proper cylinder order when removing each spark plug.Most importantly check their gaps if necessary adjusting them using appropriate tools.Besides cleaning them on a machine or by using wire brush before installation is inevitable.New ones should be examined and gapped suitably prior mounting.The gap recommended varies according to different models of BMWs and types of spark plugs although gapping must be done when only permitted for without weakening or breaking any side electrode while making adjustments.Answered by BMW Parts Specialist Noah / Sep 25, 2025
