NGK 7164 TR55IX Iridium IX Spark Plug | Replaces DENSO T16, T16TT, EPR-U15 | For Mazda & Ford Engines at a good price

Product Overview

The NGK 7164 TR55IX Iridium IX Spark Plug is the premium replacement for Denso T16 / T16TT / EPR-U15 and Mazda OE part LFY3-18-110. Engineered for superior ignition performance and longevity, it’s the ideal plug for Mazda, Ford, and Mercury petrol engines from 1994–2025, delivering smooth combustion, strong acceleration, and better fuel economy.

Featuring a 0.6mm Iridium fine-wire center electrode, this plug ensures reliable cold starts, reduced misfires, and stable idling — even under demanding driving conditions.

price per pc

Key Features

• Iridium Fine-Wire Electrode (0.6mm): Enables precise ignition with reduced voltage demand.
• Copper Core Technology: Enhances heat dissipation and prevents overheating.
• Trivalent Metal Plating: Protects against corrosion and thread seizure.
• Resistor (5 kΩ): Suppresses radio interference for vehicles with modern ignition systems.
• Tapered Seat Design: Guarantees secure sealing and easy installation.
• OEM Equivalent: Direct fit replacement for Mazda and Ford factory plugs.

Technical Specifications

Specification Detail

Brand NGK

Part Number 7164 (TR55IX)

Equivalent To DENSO T16 / T16TT / EPR-U15

Thread Size M14 x 1.25

Thread Length (Reach) 17.5–18 mm

Seat Type Tapered

Hex (Spanner Size) 16 mm

Resistor Yes – 5 kΩ

Center Electrode Material Iridium

Ground Electrode Material Nickel

Tip Design Projected, Single Ground

Spark Position 4.0 mm

Heat Range 5 Terminal Type Fixed SAE Solid

Brand Class Premium

Cross Reference /

OEM Numbers

Manufacturer Part Numbers

NGK 7164 / TR55IX DENSO T16 / T16TT / EPR-U15

MAZDA LFY3-18-110 / LF01-18-110 / L813-18-110

FORD 3333704 / 3539125

MERCURY MARINE 8M0095454 / 8M0176622

MOTORCRAFT AWSF32EE / AWSF42EE / AGSF32W / AWSF42PP / AWSF32E / AWSF32F BOSCH HR9DPY / HR9DCY / HR8DCV / 0 242 229 737 / 0242225534 / 0242225578 CHAMPION RS12YC6 / RS14YC6 / RS14YC6T04

BERU (BorgWarner) 0002630900 / Z148 / 14KR8DPUOV

Compatible Vehicles

Mazda

• Mazda 3 (BK) – 2.0 LF-DE / LF-VE Petrol
• Mazda 3 Saloon (BK) – 2.0 Petrol (2003–2009)
• Mazda 5 (CR19) – 1.8 / 2.0 Petrol (2005–2015)
• Mazda 6 (GG / GH / GY) – 1.8 MZR, 2.0, 2.3 Petrol (2002–2015)
• Mazda 6 Hatchback / Estate / Saloon – 1.8 MZR (L8-DE / L813)
• Mazda MX-5 (NC) – 1.8 / 2.0 Petrol (2005–2015)
• Mazda Tribute (EP) – 2.3 16V Petrol

Ford

• Ford Mondeo Mk2 / Mk3 – 1.8, 2.0, 2.3, 2.5 V6 24V
• Ford Focus / Fusion / Cougar / Escape – Petrol 1.8–2.5 engines
• Ford Transit Mk6 (V347 / V348) – 2.0 / 2.3 16V RWD
• Ford Mondeo ST200 / 2.5i 24V – 2.5L 205 HP
• Ford Mondeo BFP – 2.3L 151kW
• Mercury Mariner / Milan / Tribute – 2.3L Petrol

Performance Range

Parameter Range Engine Capacity 1.8L – 3.0L Petrol Power Output 85 – 151 kW (116 – 205 HP) Year Range 1994 – 2025 Why Choose NGK TR55IX (7164)

✔ OEM-verified compatibility for Mazda and Ford engines

✔ Improved ignition stability and combustion efficiency

✔ Up to 2x longer lifespan than standard copper plugs

✔ Trusted by mechanics and performance tuners worldwide

Availability in Kenya

In Stock at Spares Mall Kenya

Pickup Point: Baricho Road, Industrial Area, Nairobi

Delivery: Same-day in Nairobi | Next-day countrywide

Payment: Cash, M-Pesa, or Card on delivery

Buy NGK 7164 TR55IX Iridium IX Spark Plug — replaces DENSO T16 / T16TT / EPR-U15 and Mazda LFY3-18-110. Fits Mazda 3, 5, 6, MX-5, Ford Mondeo, Focus, Transit. Genuine NGK Iridium spark plug, available at Spares Mall Kenya with delivery countrywide.