Denso Iridium TT Spark Plugs Set of 4 for Mercedes A190 W168 1.9L

PRODUCT OVERVIEW

Set of 4 Denso Iridium TT spark plugs designed for Mercedes A190 W168 4-cylinder 1.9L petrol engines (1999–2003). Engine code: 166990. High ignitability design for improved starting, acceleration and fuel efficiency.

KEY FEATURES

• Denso Iridium TT (Twin Tip) series spark plugs
• 0.4 mm ultra-fine iridium center electrode for high ignitability
• 0.7 mm needle-shaped platinum ground electrode to reduce quenching
• Built-in monolithic resistor to minimize electromagnetic interference
• 360° all-around laser-welded iridium tip for maximum durability
• Engine starts easily with smoother idle and improved acceleration
• Long service life with stable performance over time

TECHNICAL SPECIFICATIONS

• Centre electrode: Iridium TT (Twin Tip)
• Ground electrode: 0.7 mm needle-type platinum
• Fuel type: Petrol
• Thread diameter: 14 mm
• Hex size: 16 mm
• Reach: 19 mm
• Factory gap: 1.1 mm

DESIGN & PERFORMANCE BENEFITS

• Ultra-fine iridium center electrode reduces required spark voltage and improves ignitability.
• Fine platinum ground electrode reduces quenching effect for faster flame kernel growth.
• Stable combustion across a wide range of driving conditions.
• Enhanced throttle response and acceleration compared to conventional plugs.
• Optimized for long life and consistent performance.

PACKAGE CONTENTS

• 4 x Denso Iridium TT spark plugs

FITMENT NOTICE

This is a vehicle-specific part for Mercedes A190 W168 4-cyl 1.9L petrol engines (1999–2003). Always confirm compatibility with your vehicle using engine code and existing plug specifications before purchase or installation.