Denso Iridium TT Spark Plugs Set of 4 for VW Passat 1.8L 4-Cyl AEB 1998-2000

PRODUCT OVERVIEW

Set of 4 Denso Iridium TT spark plugs engineered for Volkswagen Passat 4-cylinder 1.8L AEB engines (1998–2000). Designed to deliver improved ignition performance, acceleration, fuel efficiency and long service life compared with conventional plugs.

KEY FEATURES

• 0.4 mm ultra-fine iridium center electrode for high ignitability
• 0.7 mm needle-shaped platinum ground electrode (Twin Tip design)
• Built-in, highly reliable monolithic resistor to reduce electromagnetic interference
• 360° all-around laser-welded iridium tip for maximum durability
• Optimized flame kernel growth to help extract maximum engine power
• Supports easier starting, smoother idle and improved acceleration
• Designed for petrol engines

TECHNOLOGY DETAILS

• Iridium TT center electrode: Uses Denso's exclusive high-melting-point iridium alloy, allowing a very fine 0.4 mm tip that lowers required spark voltage and enhances combustion stability.
• Needle-type platinum ground electrode: 0.7 mm diameter double-needle shape reduces quenching effect, promoting rapid flame kernel growth and efficient combustion.
• 360° laser welding: All-around laser weld secures the precious-metal tips for reliable performance under severe driving conditions.
• Integrated resistor: Embedded resistor helps eliminate electromagnetic noise that can interfere with modern electronic systems.

SPECIFICATIONS

• Center electrode: Iridium TT (Twin Tip)
• Ground electrode: Needle-shaped platinum
• Fuel type: Petrol
• Thread diameter: 14 mm
• Hex size: 16 mm
• Reach: 19 mm
• Factory gap: 1.0 mm
• Quantity: Set of 4 spark plugs
• Reference: ZPN-75558

FITMENT NOTICE

This is a vehicle-specific part. Ensure compatibility with your Volkswagen Passat 4-cylinder 1.8L AEB engine (model years 1998–2000) before purchase. Always compare existing plug specifications and consult professional guidance if uncertain.