NGK: Quality Policy

V-Line spark plugs

Surface ignition type spark plugs

Spark plugs with supplementary spark gap

Design of a standard spark plug

Spark plug faces

VX spark plugs (Platinum plugs)

D-Power-Glow plugs

Sheathed type glow plugs

Ceramic glow plugs

NGK glow plugs viewed in detail

Intelligent glow technology

Petrol engines with controlled catalyst

Visual examination

Functional tests

Function and technology

Lambda sensors for optimal exhaust gas reduction

Design of a standard spark plug

Ignition cables

Spark plug sockets

Heat rating and heat rating number

How to break the NGK code

Spark plugs with supplementary spark gap

Platinum is writing automotive history

Spark plugs with multiple-ground electrodes

Tightening torques for spark plugs

Spark plugs for engines with direct petrol injection

The Lambda sensor

Plugs for Lambda sensors

Environmental Policy

Press information 2010

Press information 2009

Press information 2008

Press information 2007

Original equipment

Ignition cables

Technical training

Racing spark plugs

Research & development

Sales & production

Quality and Environment

NTK Cutting Tools

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Home > Company > Quality and Environment > Quality Policy

NGK Quality Policy

NGK Quality Policy

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