2006 BMW 325i Ignition Coil Performance Highlights
Consistent Spark Output: Maintains stable ignition timing and spark strength across all RPM ranges, even in high-heat or high-load driving conditions.
Premium Copper Windings: Delivers exceptional electrical conductivity and minimizes energy loss for optimized combustion.
Reinforced Epoxy Housing: Designed to resist engine heat, vibration, and humidity, extending service life under tough operating environments.
OEM Level Compatibility: Direct replacement for OE numbers 0221504470, UF592, 12137594937, 12137551049, and 12137562744, ensuring seamless fitment for BMW models with the N52 engine.
Wide Application: Ideal for a broad range of BMW 3 Series, 5 Series, and X Series vehicles using 3.0L N52 engines.
High Reliability Under Pressure: Built to perform under elevated cylinder pressures, maintaining spark accuracy for smooth throttle response and reduced misfire risk.
Supports Advanced Combustion Technologies: Compatible with BMW's variable valve timing and lean-burn strategies, helping improve fuel efficiency and reduce emissions.
2006 BMW 325i Ignition Coil Technical Specifications
| Specification | Description |
| Coil Type | Coil On Plug (COP) Ignition |
| Voltage | 12V DC (Nominal) |
| Peak Ignition Voltage | Up to 42,000 V |
| Spark Energy | 45 – 55 mJ (varies by operating condition) |
| Primary Resistance | 0.50 Ω |
| Secondary Resistance | 6,500 Ω |
| Turns Ratio (P:S) | Approx. 1:80 |
| Inductance | 2.8 – 4.1 mH |
| Voltage Rise Time | < 2.0 kV/µs |
| Operating Temperature | –40°C to +130°C |
| Storage Temperature | –40°C to +100°C |
| Fluids Resistance | Resistant to gasoline, engine oil, brake fluid, and coolant |
| Vibration Resistance | Up to 50g |
| Housing Material | Heat-resistant PPS with epoxy resin encapsulation |
| Mounting Type | Snap-fit coil-on-plug (no mounting bolt required) |
| Mounting Hardware Included | No |
| Mounting Hole Quantity | N/A (plug-in mounting) |
| Connector Gender | Female |
| Terminal Gender | Male |
| Terminal Quantity | 2 |
| Terminal Type | Blade |
| Ignition Type | Distributor-less, coil-on-plug (COP) system |
| Oil Filled | No |
| External Resistor Required | No |
| Package Contents | Ignition Coil Unit, Instruction Sheet |
| Coil Wire Included | No |
| Dimensions (L×W×H) | Approx. 110mm × 45mm × 60mm (varies slightly by SKU) |
| Weight | Approx. 300g |
| Applicable Engine Types | BMW N52 3.0L Inline-6 Naturally Aspirated |
| Standard Compliance | ISO 9001 / IATF 16949 |
Compatible Vehicles for 2006 BMW 325i Ignition Coil Replacement
| Make & Model | Platform | Year | Engine Displacement | Engine Code |
| BMW 130i 5-Door | E87 LCI | 2008–2011 | 3.0L | N52B30BF |
| BMW 325i Sedan | E90 | 2004–2008 | 2.5L | N52B25A/B/BF |
| BMW 523i Sedan | E60 | 2003–2007 | 2.5L | N52B25A |
| BMW 530Li Sedan | F18 | 2010–2013 | 3.0L | N52B30A |
| BMW M3 Cabriolet | E46 | 1996–2006 | 3.2L | 326S4 |
| BMW M3 Coupe | E46 | 1996–2006 | 3.2L | 326S4 |
| BMW 550i Touring | F11 | 2010–2013 | 4.4T | N63B44A |
| BMW 650Ci Coupe | E63 | 2002–2007 | 4.8L | N62B48B |
| BMW 650i xDrive Cabriolet | F12/F12 LCI | 2012–2018 | 4.0T / 4.4T | N63B40A / B44A |
| BMW 650i xDrive Sedan | F06/F06 LCI | 2011–2018 | 4.0T / 4.4T | N63B40A / B44A |
| BMW 650i xDrive Coupe | F13/F13 LCI | 2011–2017 | 4.0T | N63B40A |
| BMW 750Li xDrive | F02 LCI | 2012–2015 | 4.0T | N63B40A |
| BMW ActiveHybrid 7 Sedan | F04 | 2009–2012 | 4.4T Hybrid | N63B44A |
| BMW GT 550i xDrive | F07/F07 LCI | 2010–2017 | 4.0T / 4.4T | N63B40A / B44A/B |
| BMW M5 Sedan | F90 | 2017–Present | 4.4T | S63B44B |
| BMW X5 M | F85 | 2014–2018 | 4.4T | S63B44B |
| BMW X5 xDrive50i | E70/F15 | 2010–2018 | 4.0T / 4.4T | N63B40A / B44B |
| BMW X6 ActiveHybrid | E72 | 2009–2012 | 4.4T Hybrid | N63B44A |
| BMW X6 M | F86 | 2013–2019 | 4.4T | S63B44B |
| BMW X6 xDrive50i | F16 | 2014–2019 | 4.0T / 4.4T | N63B40A / B44B |
2006 BMW 325i Ignition Coil Design & Component Overview
Understanding what goes inside a high-performance ignition coil reveals why Elecdurauto ignition coils deliver exceptional spark reliability, heat resistance, and long service life.
Every layer of Elecdurauto's ignition coil design is optimised for ignition precision, voltage control, and energy efficiency—especially in EGR (Exhaust Gas Recirculation) and lean-burn systems where fuel economy and CO₂ reduction are essential.
![Ignition coil structure diagram from professional ignition coil manufacturer]()
How Our 2006 BMW 325i Ignition Coils Are Manufactured and Tested
At Elecdurauto, we know that a high-performance ignition coil starts with precision engineering and ends with uncompromising quality control. That's why we've heavily invested in state-of-the-art production equipment and rigorous testing systems to ensure every coil meets OEM-grade expectations reliably and consistently.
![automated ignition coil assembly line for OEM production]()
Automatic Assembly Machine
![ignition coil ECU functional testing equipment for quality control]()
ECU Testing Machine
![ignition coil plastic molding area in IATF 16949-certified factory]()
Injection Mould Area
![automated secondary winding machine for ignition coil copper wire]()
Secondary Winding Machine
![shell injection area for high-temp ignition coil housing manufacturing]()
Shell Injection Area
![vacuum casting system for ignition coil insulation and durability]()
Vacuum Casting Equipment
![professional ignition coil testing equipment for OEM compliance]()
Product Testing Equipment
![dedicated ignition coil tester for high-voltage performance check]()
Ignition Coil Tester
![climate test chamber for ignition coil thermal cycling validation]()
Climate Test Chamber
![thermal shock chamber for ignition coil reliability testing]()
Thermal Shock Chamber
![ignition coil production workshop with lean manufacturing process]()
Assembly Workshop
![full-function performance tester for automotive ignition coils]()
Comprehensive Performance Tester
OEM & Aftermarket Uses for 2006 BMW 325i Ignition Coils
2006 BMW 325i Ignition Coil Certifications & Industry Standards
![ISO 9001, ISO 14001, ISO 45001, IATF 16949 certified ignition coil manufacturer for OEM and aftermarket supply]()
Choosing a Reliable 2006 BMW 325i Ignition Coil Supplier
At Elecdurauto, we specialise in manufacturing and supplying high-quality 2006 BMW 325i ignition coil and a wide range of global vehicle platforms. Our OEM-grade replacement ignition coils are trusted by importers, wholesalers, and aftermarket brands across 30+ countries. Whether you're sourcing bulk ignition coil supply, private label products, or direct-fit aftermarket alternatives, Elecdurauto delivers value, reliability, and service.
1. Global-Grade Manufacturing Power
To maintain our position as a top ignition coil manufacturer, Elecdurauto operates with world-class machinery:
Vacuum Casting Equipment – For high-purity resin insulation and heat resistance
Automatic Winding Machines – Ensuring stable and high-speed coil winding
High-Voltage Testing Systems – Guaranteeing 100% product safety and performance
Injection Moulding Machines – For precise and durable component shaping
We also run a dedicated mould and injection workshop, which allows us to have faster lead times and tighter control over consistency.
2. Specialisation in BMW Ignition Coil Technology
Elecdurauto specializes in precision-engineered ignition coil solutions designed for BMW applications, including the 2006 BMW 325i. Our coils—compatible with OE numbers 0221504470, UF592, 12137594937, 12137551049, and 12137562744—are built using high-temperature copper windings, epoxy encapsulation, and heat-resistant PPS housings. These components ensure reliable spark energy under the demanding conditions of BMW's N52 inline-6 engine, providing stable ignition performance, thermal durability, and long-term reliability across a wide range of 3-Series and 5-Series models.
3. Brand-Equivalent Sourcing + OEM/ODM Development
Our production facilities overlap with Tier 1 OEM manufacturers of Denso, Bosch, Valeo, Delphi, and Magneti Marelli—allowing us to offer equivalent-quality ignition coils that match original performance.
We support OEM replacement ignition coils, branded label customisation, and custom SKU development tailored to your local market needs.
Want to highlight your branding? We support private label ignition coil production with your logo, packaging, and barcode-ready shipping.
4. End-to-End Quality Control
We manage the entire production cycle—from raw material inspection to final packaging—with rigorous checks at every stage:
FMEA-based defect prevention
Standardised & lean production systems
Process stability testing & 100% final inspection
This ensures lower defect rates, fewer returns, and longer product lifespans for your customers.
5. Flexible Supply & Fast Lead Times
Whether you need 100 pieces of ignition coils for the 2006 BMW 325i or a container shipment of mixed SKUs, our system is built to adapt:
Low MOQ (100 units per SKU)
Rapid 2–5 day dispatch for stock coils
15–25 day lead time for OEM & custom orders
Amazon FBA / Mercado Libre packaging support
2006 BMW 325i Ignition Coil FAQs
1. What is the Minimum Order Quantity (MOQ) for your ignition coils?
Our standard MOQ for ignition coil bulk orders is 100 units per SKU, ideal for auto parts wholesalers, regional distributors, and Amazon sellers. For new partners or trial orders, we support flexible MOQ policies—reach out for current support programs.
2. What are your lead times for production and delivery?
For in-stock ignition coil models, we offer 2–5 day dispatch. For customised packaging, private label coils, or large volume orders, standard lead times are customised packaging, private label coils, or large volume orders, standard 15–25 working days, depending on SKU and quantity.
3. Do you support OEM/ODM orders for ignition coils?
Yes, Elecdurauto specialises in OEM and ODM ignition coil manufacturing. We provide full support for private labelling, custom SKU packaging, barcoding (EAN/UPC), and customised ignition coil design for regional fitment needs.
4. What certifications do your ignition coils meet?
Our factory is certified to IATF 16949, ISO/TS 16949:2009, ISO 9001, ISO 14001, and OHSAS 18001. These certifications ensure strict quality management, environmental control, and safety compliance—a must for global B2B ignition coil distribution.
5. Can I get free samples to test quality before placing a bulk order?
Yes. For qualified B2B clients like auto part importers or e-commerce platform sellers, we offer free ignition coil samples (just pay shipping) so you can test product fit, quality, and performance.
6. Do you support Amazon or Mercado Libre fulfilment needs?
Absolutely. Elecdurauto provides barcode-ready packaging, inventory consolidation, and dropshipping options for online sellers. Our coils come in compact, FBA-optimised boxes with model number and branding printed.
7. What support do you offer for long-term B2B partners?
For ignition coil importers and resellers, we offer:
Regional exclusive agency support
Priority stock allocation
Co-branded marketing materials
Product training for auto workshops and retailers
After-sales assistance and warranty management
8. What is your quality assurance process for ignition coils?
Every ignition coil undergoes:
High-voltage stress testing
Resistance & insulation checks
Vibration and thermal cycle testing
Final 100% functional test before packaging
We maintain a <0.5% warranty claim rate across all global markets.
9. Which countries or regions do you currently supply?
Elecdurauto supplies ignition coils to Europe, South America, Southeast Asia, and the Middle East through both direct export and local distributor networks. We're actively expanding and open to onboarding new partners.
10. How do I determine if this ignition coil is compatible with my vehicle?
Each Elecdurauto ignition coil is engineered to match OEM specifications for direct-fit replacement in models like the 2006 BMW 325i and other BMW 3-Series vehicles equipped with the N52 inline-6 engine. To confirm compatibility, match OE part numbers such as 0221504470, UF592, 12137594937, 12137551049, or 12137562744. You can also verify fitment by checking your engine code or providing your VIN. For further guidance, consult our compatibility chart.
11. What are the signs of a failing ignition coil?
Common symptoms include engine misfires, rough idle, difficulty starting, poor fuel economy, and a check engine light. If you're experiencing these issues, it may be time to replace your ignition coil.
12. Can I install this ignition coil myself, or do I need a mechanic?
Many ignition coils, especially coil-on-plug (COP) types, are designed for easy installation. If you're familiar with basic engine components and have the correct tools, you can perform a DIY replacement. Always refer to your vehicle service manual for torque specs and safety guidelines.
13. How long do Elecdurauto ignition coils typically last?
Our ignition coils are designed for long service life, often exceeding 100,000 kilometres (60,000+ miles) under normal operating conditions. We use advanced vacuum casting, epoxy resin insulation, and high-temperature wire winding to ensure heat resistance and durability.
14. What is the warranty policy on Elecdurauto ignition coils?
All Elecdurauto ignition coils come with an 18-month / 20,000 km limited warranty covering manufacturing defects. With a warranty return rate of less than 0.5%, our coils have proven long-term reliability in over 30+ countries. manufacturing defects.
15. Are these coils compatible with turbo or hybrid engines?
Elecdurauto ignition coils for the 2006 BMW 325i are designed specifically for naturally aspirated engine configurations like the N52 3.0L I6. They are not intended for use in turbocharged or hybrid BMW powertrains. For other applications, please refer to the correct ignition coil model based on OE reference numbers.
16. What makes Elecdurauto different from other ignition coil manufacturers?
We combine global raw material sourcing, advanced automation (e.g., robotic winding, in-house injection), and full testing procedures, including high-voltage, insulation, and vibration testing. With a proven track record across OEM, fleet, and aftermarket clients reliability, performance, and fast lead times at scale.
