BMW 740I Ignition Coil Parts
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Based on industry averages you can expect to pay between $20.59 and $94.99 for a BMW 740I ignition coil.
The BMW 740i ignition coil is an integral part of the vehicle's ignition system. It is responsible for converting the low voltage from the battery into a high voltage charge, which is then used to ignite the fuel mixture in the engine's combustion chambers. This process generates the spark required to start the engine and keep it running smoothly. The ignition coil plays a crucial role in ensuring optimal engine performance and fuel efficiency in the BMW 740i.
Signs of Faulty or Worn BMW 740I Ignition Coil
The most common signs of a faulty or worn-out ignition coil in a BMW 740i include:
- Engine misfires: Misfires occur when the spark plugs do not ignite the fuel-air mixture properly, leading to a rough-running engine or noticeable hesitation during acceleration.
- Rough idle: A faulty ignition coil can cause the engine to idle roughly, causing vibrations and instability at idle speed.
- Decreased fuel efficiency: When the ignition coil is malfunctioning, it can cause an incomplete combustion process, leading to decreased fuel efficiency and increased fuel consumption.
- Hard starting or no-start condition: A worn-out ignition coil may result in difficulties starting the engine, requiring multiple attempts or causing the engine not to start at all.
- Loss of power and performance: If the ignition coil is failing, it can lead to a significant loss of power and overall decrease in engine performance.
- Illuminated check engine light: A faulty ignition coil can trigger the vehicle's onboard diagnostic system, resulting in the illumination of the check engine light on the dashboard.
- Increased emissions: Inefficient combustion due to a faulty ignition coil can lead to higher levels of harmful emissions coming out of the exhaust system.
- Stalling or engine shutdown: In severe cases, a failing ignition coil can cause the engine to stall or shut down unexpectedly while driving.
If you notice any combination of these symptoms, it is advisable to have your BMW 740i inspected by a qualified mechanic or technician to diagnose and replace the faulty ignition coil if necessary.
Replacing BMW 740I Ignition Coils
Replacing the ignition coil in a BMW 740i involves several steps. Here is a general outline of the process:
- Gather the necessary tools and materials: You will need a new ignition coil, a socket set with a ratchet handle, a screwdriver set, dielectric grease, and safety goggles.
- Locate the ignition coils: The ignition coils are typically found on top of the engine block. They are connected to the spark plugs by wires or boots.
- Disconnect the battery: Locate the battery in the vehicle and disconnect the negative terminal. This will prevent any accidental electrical shocks during the replacement process.
- Remove the engine cover: Depending on the specific model year, you may need to remove the engine cover to access the ignition coils. Typically, this involves removing any screws or clips holding it in place.
- Disconnect the ignition coil connector: Each ignition coil has a connector attached to it. Use a screwdriver or your fingers to carefully disconnect the connector, being cautious not to damage it.
- Remove the ignition coil: Once the connector is removed, you can use a socket set to loosen and remove the bolts or screws securing the ignition coil. Gently pull the coil away from the spark plug to detach it.
- Apply dielectric grease: Before installing the new ignition coil, apply a small amount of dielectric grease to the inside of the spark plug boot. This helps ensure a proper electrical connection.
- Install the new ignition coil: Carefully align the new ignition coil with the corresponding spark plug hole and press it firmly into place. Make sure it is securely seated and aligned properly.
- Reconnect the ignition coil connector: Attach the connector to the new ignition coil, ensuring it clicks into place and is securely fastened.
- Replace the engine cover: If you removed the engine cover in step 4, reattach it by reinstalling any screws or clips that were originally used to secure it.
- Reconnect the battery: Return to the vehicle's battery and reconnect the negative terminal.
- Test the new ignition coil: Start the engine and listen for any abnormal sounds or misfires. If everything sounds and feels normal, you have successfully replaced the ignition coil.
Note: This outline provides a general guide for replacing the ignition coil in a BMW 740i. It is always recommended to consult the vehicle's owner manual or seek professional assistance for specific instructions related to your particular model year.
Top BMW 740I Ignition Coil Brands for Sale
Delphi:
Delphi is a well-known and respected manufacturer of auto parts, including ignition coils. They have a long-standing reputation for producing high-quality components and are trusted by many vehicle manufacturers, including BMW, to provide reliable and durable parts. Delphi ignition coils are known for their excellent performance and precise fit, ensuring optimal engine performance and fuel efficiency. While they may not carry the BMW Genuine brand name, Delphi ignition coils meet the same high standards set by the vehicle manufacturer.
Bosch:
Bosch is another reputable manufacturer that has been producing quality automotive parts for decades. As a supplier to various vehicle manufacturers, including BMW, Bosch is known for its engineering expertise and commitment to producing reliable and efficient ignition coils. Their products are designed to meet or exceed the original equipment specifications, ensuring proper combustion and reducing the risk of misfires. Bosch ignition coils offer excellent performance and durability, making them a popular choice for BMW owners looking for high-quality replacements.
Eldor:
Eldor is a renowned manufacturer of electrical components, including ignition coils, and has gained recognition for its advanced technology and innovation. While perhaps not as widely recognized as Delphi or Bosch, Eldor has established itself as a trusted supplier to luxury automotive brands like BMW. Their ignition coils are engineered to deliver reliable performance and consistent spark energy across the entire RPM range, ensuring smooth engine operation. Eldor ignition coils may not carry the BMW Genuine branding but are manufactured to stringent standards to meet the exacting requirements of the vehicle manufacturer.
It's worth noting that while Genuine branded parts carry the vehicle manufacturer's name, Delphi, Bosch, and Eldor are all reputable manufacturers entrusted by BMW to produce ignition coils of the highest quality. While Genuine parts may be the most expensive due to the branding, these aftermarket options from well-established manufacturers provide an excellent balance between quality and cost.
Shop For BMW 740I Ignition Coil Anytime With AutohausAZ
When shopping at AutohausAZ for a BMW 740I ignition coil, customers can take advantage of several benefits. Firstly, a wide selection of high-quality ignition coils is available, ensuring that customers can easily find the right one for their specific vehicle model. Additionally, customers can rely on the expertise and knowledge of the professionals at AutohausAZ, who can provide guidance and assistance throughout the purchasing process.
Furthermore, by choosing AutohausAZ, customers can be confident in the quality of the ignition coils they purchase. The products offered are sourced from reputable manufacturers, ensuring that they meet or exceed industry standards. This means that customers can trust that the ignition coil they receive will be durable and reliable, providing optimal performance for their BMW 740I.
Moreover, shopping at AutohausAZ for a BMW 740I ignition coil offers convenience. The website is designed to be user-friendly, allowing customers to easily navigate and find the desired product. With a simple ordering process, customers can quickly and efficiently complete their purchase, ensuring a seamless shopping experience.
Lastly, AutohausAZ prioritizes customer satisfaction, providing excellent customer service. Customers can reach out to the dedicated support team for any inquiries or concerns they may have regarding their purchase. The team is committed to providing timely and helpful assistance, ensuring that customers feel supported throughout their shopping journey.
In conclusion, by choosing AutohausAZ for a BMW 740I ignition coil, customers gain access to a wide selection of high-quality products, expert guidance, reliable durability, convenient shopping, and exceptional customer service. These advantages make AutohausAZ a trusted destination for BMW owners in need of ignition coils for their vehicles.
