NGK 2743 Spark Plug

NGK Laser Platinum Spark Plug 2743

NGK Laser Platinum Spark Plug 2743 is built for drivers who need OE-style ignition performance with precise fitment and stable spark delivery. This spark plug uses a platinum center electrode, nickel ground electrode, and a 0.044" pre-gap to support consistent combustion in a wide range of import and domestic applications.

The Laser Platinum line reflects NGK’s OE-focused spark plug design, backed by the company’s long history as a major original equipment supplier. Part number 2743 is also identified as PFR6J-11 and is used in applications such as Mitsubishi 3000GT, Dodge Stealth, and Suzuki Grand Vitara service coverage.

Key Features

• Laser Platinum spark plug with platinum center electrode tip material
• Nickel ground electrode with standard tip and standard configuration
• 0.044" pre-gap for specified applications
• 5000 ohm resistance
• 14 mm thread diameter, 0.75" reach, flat seat
• 5/8" hex size for common spark plug service tools
• Non-removable nut terminal
• NGK part number 2743, manufacturer number PFR6J-11

Detailed Description

NGK 2743 is a Laser Platinum spark plug engineered for vehicles that call for a platinum-tipped plug with OE-style dimensions and heat range 6. The copper core center electrode supports efficient heat transfer, while the platinum tip helps maintain consistent firing characteristics over service intervals. This makes it a practical choice for owners servicing Mitsubishi 3000GT, Dodge Stealth, Mitsubishi Diamante, and Suzuki Grand Vitara ignition systems that specify this plug design.

This part cross-references DENSO Auto Parts 4504 for the same application.

What It Helps Address

• Engine misfire caused by worn or fouled spark plugs
• Hard starting from weak or inconsistent spark output
• Rough idle related to degraded ignition performance
• Reduced fuel efficiency from incomplete combustion
• Loss of throttle response from aged ignition components

Installation Notes and Tips

• Verify the specified gap before installation; listed pre-gap is 0.044" for this part.
• Confirm thread diameter, reach, seat type, and hex size match the engine specification.
• Use the vehicle’s service manual for torque and replacement interval guidance.
• Check the ignition system, coil condition, and plug wires during spark plug service.
• Fitment includes 1991-1999 Mitsubishi 3000GT, 1991-1996 Dodge Stealth, 1992-1995 Mitsubishi Diamante, 1995-1996 Mitsubishi Montero, 1997-1998 Mitsubishi Montero Sport, 2006-2008 Suzuki Grand Vitara, and other listed applications.

Quality Assurance

NGK is a long-established OE supplier with broad coverage across domestic and import vehicles in North America. The brand’s manufacturing focus on original equipment standards supports consistent fit, durability, and operational performance for applications that specify NGK 2743.