I understand that the replacement ignition coils for my 2010 BMW 325i have the part number BMW 12138616153. Delphi is the default brand that BMW supplies.
Would you purchase a Delphi or even a Bosch if you needed to replace all six?
Is there a different, more effective brand that is suggested for Australia?
I think the ones in my car (I believe they are Delphi) need to be replaced and I’m happy to replace them myself because it seems like a very straightforward task.
I recently acquired a Brimmerlife wiring harness from Vader Solutions in the United States, and I’ll be using red top hat coils from an Audi R8. Much better choice.
For my 325i, I literally just got some Delphi Coils from FCP Euro—they were the most affordable I could find. BMW rebrands them and charges twice as much for them.
Here is a post by DR-JEKL that discusses the various coil kinds in great detail:
Quote:
Most automobile coils and plugs have a lifespan of 100–200 thousand kilometers! The N54 is a high-performance engine, and adding a tune puts a lot more demand on the ignition system (and fueling system as well) to supply the gasoline and ignition to produce that extra power. If there is a weak link, the car will immediately enter limp mode (feels like you hit a brick wall – and you get the CEL check engine light)
These cars have terrible coil setups, and it’s not unusual for folks to get misfires even with coils that have been in use for 20–30k kays. Unfortunately, all you can do is trash them. The design of the coils, which sit in the engine recess and are subject to thermal radiation from the motor when the N54/N55 runs hot, is mostly to blame for this.
To try and prevent the coil from deterioration, BMW switched some engines from Bosch coils to Delphi, which has a metal sleeve as an insulator:
$270, freight included. Due to cylinder 6’s misfiring, I’m replacing it and haven’t driven for almost a week. Bosch coils are now fitted in the car; maybe, the Delphi version will have a little bit more life. In my perspective, there shouldn’t be a need to replace if the car is operating normally. 92,000 kilometers have been put on my automobile.
In This Article...
Are the ignition coils on all BMWs the same?
Even though some part numbers are for particular models, you can follow their origins. Consequently, every BMW ignition coil application from 2003 to 2016 is equivalent, if not interchangeable.
What causes BMW ignition coil failure?
Your BMW’s ignition coils’ openings are so near to the engine that with time, heat and vibration might harm the coil housing. The typical lifespan of a BMW ignition coil is around 140,000 kilometers. The lifespan of your coils may drastically reduce if you frequently strain your car’s performance. You should prepare to replace your coils every 20,000–25,000 miles if you’re one of the enthusiasts with modified BMWs who enjoys pushing the limits of your vehicle.
Other factors that contribute to ignition coil failure include faulty spark plugs, oil leaks, and engine water corrosion. It’s possible that a damaged spark plug won’t conduct electricity effectively. Due to the excessive heat produced on the insulator side, this can eventually cause the coil housing to melt. Oil leaks will corrode the spark plug and coil connection, decreasing conductivity and ultimately blocking a spark. Finally, water damage will undoubtedly short the circuit formed by the connection between the ignition coil and the spark plug.
How much does a BMW ignition coil replacement cost?
An ignition coil replacement for a BMW 328i typically costs between $128 and $195. Between $57 and $72 is the expected cost of labor, and between $70 and $123 is the projected cost of parts. Taxes and levies are not included in this range, nor are your particular model year or special location taken into account.
Are iridium spark plugs used by BMW?
I was simply curious as to if anyone had switched the e90 plugs—I assume 325/330 are the same—yet to Denso or NGK iridium plugs. If so, do you know the part numbers for either the factory plug or the iridium model?
likely just fiddling around for the purpose of fiddling around. Try it out and let us know if you can actually distinguish a difference. My bet is that you won’t be able to, but I’d love to be proven wrong.
“The top manufacturer of spark plugs, NGK Spark Plugs, has announced the release of two new Iridium spark plugs that will be used as Original Equipment in the recently released BMW 3 Series.
The latest spark plug from NGK, the ILZFR6D11, was created especially for the next generation of BMW VVT (Variable Valvetronic) engines. The 2.5 liter and 3.0 liter, 6 cylinder engines that will power the New 3 Series vehicles will both use this exceptionally long, 26.5mm, thread reach plug. Both the 3.0 liter variant utilized in the 630 Ci and the current 5 Series will also use these engines.”
Going aftermarket is not an option because NGK sparkplugs, rather than those used by BMW, are used instead.
When you get a set of SPARK PLUGS THAT ARE APPROPRIATE, you get more power, better fuel efficiency, and reduced emissions. These spark plugs should have the proper length, electrode arrangement, electrode size, and heat range.
If you don’t meet any of those requirements, your car will have less power, less fuel efficiency, and more pollutants. It may also damage the catalytic converter or even the pistons. Unburned or still-burning fuel escaping via the exhaust would destroy the cats, and if a spark plug with an inadequate heat rating melted and fell into the combustion chamber, the pistons may sustain damage.
Spark plugs are an important product. Unfortunately, none of the “experts” at Autozone (or wherever) are aware of that.
Due to the fact that you may not be aware of the error, installing the incorrect plugs in your car can be among the most aggravating experiences ever. You merely wonder why you have suddenly turned into a slug.
I’ve been replacing the NGK iridium plugs, which are now commonly found in cars, with Denso ones. I don’t notice any power gains, but the throttle responsiveness is better.
Even though I am aware that Denso produces high-performance iridium plugs for N52s that will destroy the stock NGK plugs, I was deterred by the fact that I didn’t know how to access the rear 3 cylinders when facing the engine compartment.
Denso Iridium Power IKH20 is a cross reference for the original equipment NGK iridium plugs for the N52 (ILZFR6D11).
I’d continue using the stock NGK iridiums. In addition to being challenging to change the spark plugs on the N52, I’m not sure Denso spark plugs are any higher-quality than NGK ones. I’ve seen some terrible things happen to Denso-made components, one of which being a problem with the ignition coils on the 2003 Yamaha R6 (sportbike), which caused the bikes to suddenly switch off while being driven. For its 2004 motorcycles, Yamaha ultimately had to purchase ignition coils from a different supplier. NGK simply has my faith more than Denso.
I seem to recall reading in another article that it was due to some subpar adjustments and that the guy overtuning it was what made the coils outperform themselves.
BMW uses Bosch spark plugs, right?
The M52TU, M54, and M62TU BMW engines, the majority of which date from 1996 to 2006, all come standard with this OEM Bosch spark plug. Additionally, the M42 engines used in the E30 and E36 318i models use this standard plug. This spark plug is referred to as “High Power” and has platinum-tipped electrodes for prolonged service life. Platinum plugs perform better in BMW’s 100,000 mile extended service plans and last longer than copper-tipped plugs. A copper plug will perform better for tuned engines or track driving (but will require more frequent changes).
Spark plugs are essential to the functionality and efficiency of your BMW engine, much like ignition coils are. A faulty plug or plugs will reduce engine smoothness, performance, and fuel efficiency. Oxygen sensors and catalytic converters’ lifespans will be shortened by unburned gasoline in the exhaust. Performance declines are masked by the long-term wear on spark plugs. BMW might suggest replacement intervals of “lifetime” 100,000 miles, however we typically advise 50-60,000 mile replacements.
Platinum versus Copper In order to work with BMW’s extended service plans, platinum plugs were first introduced in the late 1990s. They have a longer lifespan than copper tipped plugs but will perform less well, especially when used in competition or on highly tuned engines. Although they require more frequent replacement, copper plugs work better. Choose a copper plug if maximizing horsepower is more important than longevity. The “High Power” platinum plugs are a decent option for a daily driver that doesn’t place as much focus on performance.
Which ignition coil manufacturer is best?
- Optimum overall Ignition coil for Delphi GN10328. View Current Price.
- Top Value. ENA Ignition Coil Set, 8-Pack. View Current Price.
- Exceptional Mention. Ignition coil combo pack for Honda, Acura, and Saturn from King Auto Parts. View Current Price
What about aftermarket ignition coils?
Price is typically an advantage that aftermarket parts have over OEM parts. A wide range of makes and models can use aftermarket ignition coils. As a result, aftermarket producers can provide them for less money to a wider customer base. The aftermarket industry is flourishing as a result. Car owners frequently employ aftermarket components because they:
- Lack of accessible OEM parts
- people unaware they may get inexpensive OEM parts online.
Something isn’t necessarily good just because it’s popular. It is never worthwhile to save a few dollars more by using aftermarket ignition coils. If it doesn’t affect: You may be able to get away with utilizing a low-cost universal aftermarket part in some circumstances.
- The efficiency of the engine
- The security of the car
For instance, using an aftermarket steering wheel would be OK. However, the performance of the engine will likely suffer greatly as a result of aftermarket ignition coils.
What about Bosch ignition coils?
Siemens Coils ignition coils of exceptional quality. Since I enjoy all Bosch products, I felt that replacing the Delphi coils with Bosch coils would increase reliability. The vehicle is operating flawlessly without an
Chinese manufacturers of Denso ignition coils?
All DENSO Spark Plugs are produced in the USA, China, Indonesia, and Japan. A part is not authentic if it purports to be a DENSO component but was made somewhere else.
How long is the life of an ignition coil?
What about your coil packs? I am aware that spark plugs often need to be changed after a specific amount of mileage. How long do automobile coil packs last?
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Coil packs typically last up to 5 years or 120,000 miles before needing to be replaced. Coil packs have a lengthy lifespan, but continual exposure to heat and friction can inevitably shorten their lifespan. Carbon buildup may also cause harm to the coil pack.
If necessary, replacing your car’s coil pack won’t usually set you back more than $300.
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Will performance improve if the ignition coil is changed?
Four significant ways a high performance ignition coil improves engine performance. The greater spark plug gap, which is made possible by the higher voltage, produces a more strong first flame kernal at the beginning of combustion. Real-world engine torque is increased as a result. Second, with greater voltage available, the voltage needed to close the spark plug gap arrives there more quickly, reducing the chance of voltage divergence through the unavoidable carbon deposits on the spark plug. Thirdly, the higher potential voltage exerts a larger “push” on the electrical stream to the plug, resulting in an increase in electrical current, or more energy and snap. Fourth, with more voltage available, there is greater reserve for atypical circumstances, such as two-up riding with subpar gasoline on a hot day with inadequate tire pressure and a 20 mph headwind.