Set of 6 Denso Iridium TT Spark Plugs for Holden Commodore ZB 2.0L

PRODUCT OVERVIEW

Set of 6 Denso Iridium TT spark plugs designed for Holden Commodore ZB 4-cylinder 2.0L LTG petrol engines (reference: ZPN-66459). The Iridium TT (Twin Tip) design delivers strong ignition performance, improved acceleration and long service life.

KEY FEATURES

• Denso Iridium TT series high-performance spark plugs
• 0.4 mm ultra-fine iridium center electrode for improved ignitability
• 0.7 mm needle-shaped platinum ground electrode to reduce quenching
• Built-in, highly reliable resistor to minimise electromagnetic interference
• 360° all-around laser-welded iridium tip for maximum durability
• Designed for strong cold starting, smooth idle and improved acceleration
• Long service life and stable performance under severe driving conditions

TECHNICAL SPECIFICATIONS

• Series: Iridium TT (Twin Tip)
• Fuel type: Petrol
• Thread diameter: 14 mm
• Hex size: 16 mm
• Reach: 25 mm
• Gap: 1.0 mm
• Quantity: Set of 6 spark plugs
• Reference: ZPN-66459

PERFORMANCE BENEFITS

• Reduced required spark voltage thanks to ultra-fine iridium center electrode
• Fast flame kernel growth for efficient combustion and engine response
• Improved throttle response and acceleration characteristics
• Stable ignition across a wide range of operating conditions

FITMENT NOTICE

This is a vehicle-specific spark plug set. Always confirm compatibility with your exact vehicle (engine code, year, and variant) before purchase and installation. If unsure, consult your workshop or parts catalog using the reference number ZPN-66459.