Bosch FR78X - Spark Plugs Super 4 - Pack of 1

Product Overview

The Bosch FR78X – Spark Plugs Super 4 – Pack of 1 is a high‑performance ignition component designed for modern gasoline engines. It features a four‑pole configuration and a wrench width of 16 mm, ensuring a secure fit in a wide range of vehicles.

Key Technical Specifications

• Model Number: FR78X (OE code 0242232502)
• Poles: 4
• Wrench Size: 16 mm
• Tip Material: Chrome‑Nickel alloy for enhanced durability and heat resistance.
• Electrode Design: Multi‑electrode layout that delivers consistent spark timing across the combustion cycle.
• Compatibility: Engine models ranging from compact city cars to larger family sedans, including many Volkswagen, Audi, BMW, Mini, Honda, and Toyota variants.

Performance Benefits

The Super 4 series is engineered to provide improved combustion efficiency, which translates into better fuel economy and reduced emissions. The robust tip construction resists wear from high temperatures, extending the service life of each plug. Additionally, the four‑pole design offers precise spark delivery, contributing to smoother engine operation and lower idle noise.

Installation Guidance

1. Preparation: Warm up the engine slightly to reduce thermal shock when removing old plugs.
2. Removal: Use a 16 mm spark plug socket or wrench. Turn counter‑clockwise until the plug is free.
3. Inspection: Check the old plug for wear, fouling, or damage. Replace if any issues are found.
4. Installation: Align the new FR78X with the spark plug boot and hand‑tighten to avoid cross‑threading.
5. Tightening: Apply a torque wrench set to the manufacturer’s specification (typically 120–140 Nm for most gasoline engines). Over‑torque can damage the ceramic insulator; under‑torque may lead to poor spark performance.

Vehicle Compatibility Highlights

The FR78X is a versatile choice for many popular models. Below are representative examples of vehicles that commonly use this plug:

• Volkswagen: Golf, Polo, Passat, Jetta, and Tiguan.
• Audi: A3, A4, Q5, and TT.
• BMW: 1 Series, 3 Series, X1, and Z4.
• Mini: Cooper S, Clubman, and Countryman.
• Honda: Civic, Accord, Jazz, and Fit.
• Toyota: Corolla, Camry, Prius, and Yaris.

Why Choose the Bosch FR78X?

Choosing a reliable spark plug is essential for maintaining engine health. The Bosch FR78X Super 4 offers:

• OEM Quality: Manufactured to original equipment specifications, ensuring seamless integration.
• Durability: Chrome‑nickel tip resists corrosion and high temperatures.
• Consistent Spark: Four‑pole design delivers reliable ignition across all operating conditions.
• Wide Compatibility: Fits a broad spectrum of engines, reducing the need for multiple part numbers.

Maintenance Tips

To keep your engine running smoothly, consider these routine checks:

• Inspect spark plugs every 30,000–50,000 km or as recommended by the vehicle manufacturer.
• Check for fouling: A blackened tip indicates carbon buildup; replace if necessary.
• Verify correct torque: Re‑tighten after a few hundred kilometers to ensure no loosening has occurred.

Conclusion

The Bosch FR78X – Spark Plugs Super 4 – Pack of 1 combines proven engineering with high‑grade materials, delivering reliable ignition performance for a wide array of gasoline engines. Its four‑pole design, chrome‑nickel tip, and precise wrench size make it an excellent choice for both professional mechanics and knowledgeable DIY enthusiasts seeking OEM quality.