TRW DF4947 Spark Plugs

TRW DF4947 Spark Plugs: Precision Ignition for Optimal Performance

The TRW DF4947 Spark Plug is engineered to deliver consistent, high‑energy ignition across a wide range of automotive engines. Designed with advanced materials and meticulous manufacturing tolerances, this spark plug ensures reliable combustion, improved fuel efficiency, and reduced emissions.

Key Technical Specifications

• Heat Range: Medium to High – suitable for both street and mild performance applications.
• Electrode Material: Platinum‑tipped center electrode combined with a nickel alloy ground electrode for long life and low resistance.
• Gap Size: Standard 0.7 mm (adjustable to manufacturer specifications).
• Thread Size: 14 × 1.25 mm – compatible with most modern gasoline engines.
• Insulator Material: Porcelain ceramic for excellent heat dissipation and electrical isolation.

Performance Benefits

The DF4947 spark plug’s platinum center electrode provides a cleaner, more consistent spark, which translates into smoother engine operation. Its nickel alloy ground electrode offers:

• Extended service life – up to 30,000 miles in many applications.
• Reduced fouling – maintaining performance even under high‑temperature conditions.
• Lower ignition voltage requirements, contributing to better fuel economy.

Compatibility Overview

This spark plug is engineered for a broad spectrum of engines. It is commonly found in:

• Mid‑size gasoline engines ranging from 1.6 L to 2.0 L displacement.
• Modern inline‑four and V‑six configurations.
• Both naturally aspirated and mild turbocharged powertrains.

Installation Guidelines

Proper installation is critical for maximizing the DF4947’s performance. Follow these steps:

1. Preparation: Ensure the engine is cool, disconnect the battery, and remove any protective covers.
2. Removal: Use a spark plug socket with an extension to loosen the old plug. Avoid cross‑threading by rotating counterclockwise until free.
3. Inspection: Check the new plug for damage or burrs before installation.
4. Installation: Hand‑tighten the plug, then use a torque wrench set to the manufacturer’s recommended value (typically 13–15 Nm).
5. Gap Verification: Confirm the spark gap with a feeler gauge; adjust if necessary.

Maintenance Tips

• Inspect plugs every 10,000 miles or as recommended by your vehicle’s service schedule.
• Avoid using excessive force when tightening to prevent electrode damage.
• Keep the engine bay clean; debris can compromise spark plug integrity.

Why Choose TRW DF4947?

The combination of platinum and nickel alloy electrodes, coupled with a robust porcelain insulator, makes the DF4947 an ideal choice for drivers seeking:

• Reliability: Consistent ignition under varying operating conditions.
• Longevity: Reduced need for frequent replacements.
• Efficiency: Improved combustion leading to better fuel economy and lower emissions.

Conclusion

The TRW DF4947 Spark Plug exemplifies engineering excellence in ignition technology. Its durable construction, precise spark delivery, and broad compatibility make it a trusted component for maintaining engine health and performance across diverse automotive platforms.