13.71 EUR
Elring 306.400 Spark Plugs
Manufacturer item number: 306.400 - Quality product - Brand New
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Elring 306.400 Spark Plugs
The Elring 306.400 Spark Plug is a high‑performance ignition component engineered for modern gasoline engines that demand precision, durability, and consistent combustion. Designed with advanced metallurgy and proprietary ceramic technology, this spark plug delivers reliable ignition across a wide range of operating conditions.
Key Features
- Advanced Ceramic Insulator: The insulator is crafted from high‑grade alumina ceramic, providing excellent electrical isolation and heat resistance. This ensures that the spark plug can withstand extreme temperatures without degradation.
- Optimized Electrode Geometry: The center electrode features a tapered tip with a precisely engineered gap, promoting efficient ionization of the air‑fuel mixture. The ground electrode is designed to maximize spark energy while minimizing wear.
- Corrosion‑Resistant Coating: A nickel‑plated coating protects the metal components from oxidation and corrosion, extending the service life even in harsh environments.
- High Thermal Conductivity: The plug’s design facilitates rapid heat transfer to the engine block, preventing overheating and maintaining optimal combustion temperatures.
- Consistent Performance: Engineered for uniform spark delivery, the plug reduces misfires and improves fuel efficiency, contributing to smoother engine operation.
Technical Specifications
| Specification | Value |
|---|---|
| Model Number | 306.400 |
| Type | Standard Spark Plug |
| Heat Range | Medium‑High (exact range depends on engine application) |
| Thread Size | 14mm x 1.25mm |
| Length | 57mm |
| Insulator Material | Alumina Ceramic |
| Electrode Material | Nickel‑Plated Copper |
| Gap Size | 0.7mm (typical) |
Applications
The Elring 306.400 Spark Plug is compatible with a broad spectrum of gasoline engines, particularly those found in compact and mid‑size vehicles that prioritize fuel economy and low emissions. Its design makes it suitable for:
- Front‑wheel‑drive cars with inline‑four or inline‑six cylinder configurations.
- Engine models that operate under moderate to high load conditions, where reliable ignition is critical.
- Vehicles equipped with electronic fuel injection systems that require precise spark timing for optimal performance.
Installation Guidelines
- Preparation: Ensure the engine is cool before beginning. Remove any protective covers or components obstructing access to the spark plug wells.
- Removal of Old Plug: Use a spark plug socket and ratchet to unscrew the existing plug. Inspect the old plug for wear, fouling, or damage.
- Gap Adjustment (if necessary): Verify the spark gap with a feeler gauge. Adjust to the manufacturer’s specified value using a gap tool.
- Installation: Hand‑tighten the new Elring 306.400 plug into the cylinder head, then use a torque wrench to achieve the recommended torque setting (typically 140–160 Nm for most engines).
- Final Checks: Inspect the installed plug for proper seating and ensure no debris has entered the combustion chamber.
Maintenance Tips
- Inspect spark plugs at every major service interval or when experiencing performance issues such as rough idling, reduced power, or increased fuel consumption.
- Avoid using excessive force during removal to prevent damage to the cylinder head threads.
- Store unused spark plugs in a dry environment to preserve their integrity.
Benefits of Choosing Elring 306.400
The Elring 306.400 Spark Plug offers several advantages that enhance vehicle performance and longevity:
- Reliability: Consistent spark generation reduces the likelihood of misfires, leading to smoother engine operation.
- Fuel Efficiency: Precise ignition timing contributes to better combustion efficiency, potentially lowering fuel consumption.
- Reduced Emissions: Efficient combustion helps minimize harmful exhaust emissions, supporting environmental compliance.
- Durability: High‑quality materials and protective coatings extend the service life of the plug, reducing maintenance frequency.
Conclusion
The Elring 306.400 Spark Plug exemplifies engineering excellence in ignition technology. Its combination of advanced ceramic insulation, corrosion‑resistant electrodes, and precise electrode geometry ensures reliable performance across a wide range of engine conditions. Whether you are maintaining an existing vehicle or seeking to optimize engine efficiency, the Elring 306.400 provides a dependable solution that delivers consistent spark, improved fuel economy, and reduced emissions.
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| Identifiers | |
| Brand | ![]() Elring is a German automotive parts manufacturer that produces gaskets, seals, and other components for the automotive industry. The company has a long history dating back to the early 1900s, and today is a leading supplier of parts to the automotive market. Elring products are known for their quality and durability, and the company has a reputation for innovation and technological leadership. |
| MPN | Elring 306.400 |
| ID | 20683667 |
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| Key Features | |

