Bosch ZQR8SI302 - Spark Plugs Iridium - 1 piece

Bosch ZQR8SI302 – Iridium Spark Plug, single piece

Design and Construction

The ZQR8SI302 is engineered with a tungsten iridium core that delivers exceptional durability and consistent spark performance. The iridium tip provides a high‑temperature tolerance, reducing wear and extending the life of the plug compared to conventional copper or platinum designs.

Key Technical Features

• Iridium Tip: Offers superior resistance to heat and corrosion, ensuring reliable ignition over a long service interval.
• Precision Spark Gap: Calibrated for optimal spark energy, improving combustion efficiency and reducing fuel consumption.
• Compact Size: Fits standard engine bays without modification, making it suitable for a wide range of vehicles.
• Low Electrical Resistance: Enhances ignition system performance, especially in high‑compression engines.

Performance Benefits

Installing the ZQR8SI302 can lead to noticeable improvements in engine response and overall drivability. The iridium core maintains a stable spark even under extreme operating conditions, which translates into:

• Improved Fuel Efficiency: More complete combustion reduces fuel usage.
• Reduced Emissions: Efficient ignition lowers unburnt hydrocarbons in exhaust gases.
• Enhanced Engine Longevity: Less wear on the spark plug and associated components.

Compatibility Overview

The ZQR8SI302 is designed to fit a broad spectrum of vehicles, particularly those from the Citroën, Peugeot, Mini, and DS families. Common models that accept this plug include:

• Citroën C3, C4, C5, Berlingo, DS3, DS4, and Grand Picasso
• Peugeot 207, 208, 308, 3008, 5008, and Partner
• Mini Cooper, Clubman, One, and R56/R57 variants
• Other compatible engines with a 1.6 L displacement and similar spark plug specifications.

Installation Guidance

Replacing the spark plug is straightforward:

1. Warm up the engine to operating temperature to avoid thermal shock.
2. Remove the old plug with a spark plug socket and ratchet, taking care not to cross-thread.
3. Check the spark plug gap using a feeler gauge; adjust if necessary to match manufacturer specifications.
4. Install the new ZQR8SI302 by hand, then torque it to the recommended setting with a calibrated wrench.
5. Reconnect ignition leads and verify proper operation before driving.

Maintenance Tips

• Inspect spark plugs every 20,000–30,000 km or as recommended by the vehicle manufacturer.
• Avoid using excessive force when tightening; over‑torquing can damage the iridium tip.
• Keep the engine bay clean to prevent debris from contacting the plug during operation.

Why Choose Bosch?

Bosch is a globally recognized name in automotive components, known for rigorous quality control and innovation. The ZQR8SI302 reflects this heritage, combining advanced materials with precise engineering to deliver reliable ignition performance across diverse vehicle platforms.

Conclusion

The Bosch ZQR8SI302 Iridium Spark Plug is a high‑performance component that enhances engine efficiency, reduces emissions, and extends service life. Its compatibility with a wide range of popular models makes it an excellent choice for both routine maintenance and performance upgrades.