TIME-SERT® Copper Inserts – M10 to M14 (Premium Spark Plug Thread Repair)

TIME-SERT® Copper Inserts – Professional Spark Plug Thread Repair for M10 to M14 Applications

Engineered for superior heat transfer, strength, and reliable spark plug thread restoration.

Achieve professional-grade repairs with TIME-SERT® Copper Inserts. These inserts are designed to restore worn or damaged spark plug threads in aluminum cylinder heads found in cars, motorcycles, and small engines. Thanks to copper’s exceptional heat conductivity, these time-sert copper inserts ensure better thermal management and long-lasting performance. To explore more TIME-SERT solutions, visit our full selection of TIME-SERT products.

Key Highlights

• Enhanced Heat Dissipation: Copper’s excellent thermal conductivity helps transfer spark plug heat more efficiently, maintaining optimal performance under high temperatures.
• Leak-Proof Performance: The integrated flanged collar provides a tight, dependable seal, preventing oil leaks, compression loss, and gas blow-by.
• Self-Locking Design: External threads lock securely into the head material, eliminating the need for adhesives and preventing insert rotation.
• Permanent Durability: As a result, these inserts deliver a lasting repair that withstands repeated spark plug changes and high combustion pressures.
• Professional Results: Ideal for mechanics, automotive technicians, and rebuilders who demand reliable spark plug thread repairs.

Key Features

• Thread Sizes – Available in M10 × 1.0, M12 × 1.25, and M14 × 1.25 thread sizes for compatibility with most spark plug types.
• Optimized for Aluminum Heads – Perfect for use in aluminum cylinder heads where precise thread restoration and heat dissipation are essential.
• Solid Copper Construction – Offers superior heat transfer, corrosion resistance, and long-term reliability.
• Leak-Proof Flanged Collar – Provides a secure seal against compression, oil, and combustion gases.
• Permanent Repair – Delivers OEM-quality thread integrity that endures repeated plug changes and high pressures.

Why Choose TIME-SERT® Copper Spark Plug Inserts?

• High Heat Conductivity – Copper efficiently transfers heat away from the spark plug for improved engine cooling and performance.
• Reliable Thread Reinforcement – Restores stripped threads in soft aluminum heads, ensuring secure and lasting plug fitment.
• Leak-Proof Engineering – Prevents compression loss and blow-by, maintaining consistent engine performance.
• Long-Term Reliability – Designed for high-temperature environments, these inserts offer unmatched stability and service life.

TIME-SERT vs Helicoil – Which Is Better?

When comparing time-sert copper inserts to Helicoil® solutions, the key advantage lies in their construction and performance. TIME-SERT® inserts use a solid bushing design with a flanged collar that locks permanently in place, ensuring superior thread engagement and thermal transfer. Helicoil® systems, on the other hand, use a wire-coil insert that can unwind or loosen under torque and heat. Therefore, TIME-SERT® Copper Inserts provide a stronger, more reliable, and heat-efficient repair — perfect for spark plug applications.

Technical Specifications

Frequently Asked Questions

• What thread sizes are available?
  TIME-SERT® Copper Inserts are available in M10, M12, and M14 thread sizes, covering most spark plug applications.
• Are these suitable for aluminum cylinder heads?
  Yes, these inserts are specifically designed for aluminum heads, offering a permanent, vibration-resistant repair.
• Do I need adhesives for installation?
  No adhesives are required. The self-locking external threads secure the insert during installation and use.
• Can they handle high engine temperatures?
  Absolutely. Copper’s natural thermal conductivity ensures efficient heat transfer even under extreme engine conditions.
• Can I use these inserts for other applications?
  While optimized for spark plug repairs, TIME-SERT® Copper Inserts are also suitable for other high-temperature threaded components.

For other thread repair applications, explore our carbon steel TIME-SERT Inserts designed for maximum strength and durability. Furthermore, you can view our full selection of TIME-SERT Metric Kits for comprehensive thread restoration solutions.

Watch the Thread Repair Process

See how TIME-SERT copper inserts deliver lasting spark plug thread repairs with precision and strength:

Furthermore, discover what our customers have to say on Trustpilot — read honest reviews and how our TIME-SERT® Copper Inserts perform in professional workshops worldwide.