NGK
NGK Glow Plug

NGK 6600 Diesel Glow Plug

Brand NGK 6600
Material Type Metal type
Terminal Thread Size M4
System Voltage 12
Voltage 11.00
Length 4.8
Terminal Type Pin
Hex Size 10
Seat Type Flat
Thread Diameter 0.391
Part Number Y-543j
Stock Number 6600
Product line NGK Glow Plug
Fits Smart · 3 vehicles

OE-style replacement. Built to original equipment standards for diesel ignition service.

Flat seat design. Helps ensure proper sealing in the cylinder head.

Pin terminal layout. Uses an M4 terminal thread size for the specified application.

Cross-references AMS Automotive 6600 and 250212014 for the same application. See all 2.

$29.72Free shipping
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NGK Diesel Glow Plug 6600

NGK Glow Plug 6600 is a diesel glow plug built to OE standards for reliable cold-start performance. It is a metal-type plug with a flat seat, 12-volt system voltage, and pin terminal design for straightforward replacement in the correct application.

Key Features

  • Metal-type diesel glow plug for OE-style replacement
  • Flat seat design for proper sealing in the cylinder head
  • 12-volt system voltage with 11.00 voltage specification
  • M4 terminal thread size and pin terminal type
  • 10 mm hex size and 0.391 thread diameter

Detailed Description

NGK Glow Plug 6600, also identified by part number Y-543J, is engineered for diesel ignition service where dependable preheating is required before startup. The metal construction, flat seat, and pin terminal layout reflect a conventional OE-style design, while the listed dimensions help confirm proper fitment during replacement. This part cross-references AMS Automotive 6600 for the same application. It fits 2005-2007 Smart Fortwo, N/A, and is a direct match for the specified diesel glow plug application. For buyers searching for a Smart Fortwo glow plug or NGK 6600 replacement, this part provides a focused fitment solution.

What It Is Used For

  • Replacing a worn or failed diesel glow plug
  • Restoring cold-start combustion assistance
  • Addressing hard-start conditions in diesel engines
  • Correcting misfire or rough-start symptoms related to glow plug failure
  • Maintaining proper preheat function in the ignition system

Installation Notes and Tips

Verify the thread diameter, seat type, terminal style, and voltage before installation. Confirm the application against the vehicle’s service information and match the existing glow plug specifications before replacement. Use care during removal and installation to avoid damage to the cylinder head or terminal connection.

Quality Assurance

NGK is a long-established OE supplier with extensive North American coverage and manufacturing experience. The brand’s OE-focused standards and global production network support consistent quality control for ignition components such as the 6600 glow plug.

This part fits 3 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypeNotes
2007SmartFortwo0.8LL3DIESELOE Equivalent Design; NGK Glow Plug
2006SmartFortwo0.8LL3DIESELOE Equivalent Design; NGK Glow Plug
2005SmartFortwo0.8LL3DIESELOE Equivalent Design; NGK Glow Plug
Directly replaces or cross-references 2 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AMS Automotive — 6600250212014