NGK 3573 Spark Plug

NGK Laser Platinum Spark Plug 3573

NGK Laser Platinum Spark Plug 3573 is built for drivers who need a direct-fit ignition service part with OE-style specifications. It features a platinum center electrode tip, nickel ground electrode, and a 0.044 in pre-gap for applications that call for precise ignition performance.

Compatible With Chrysler, Dodge, Plymouth, Mitsubishi, and Hyundai applications across a broad range of model years, this spark plug is a practical choice for routine tune-ups on vehicles such as the Dodge Caravan, Dodge Grand Caravan, and Plymouth Voyager. The NGK 3573 part number is also listed under PGR5A-11.

Key Features

• Laser Platinum spark plug from NGK
• Platinum center electrode tip with copper core
• Nickel ground electrode with standard tip design
• 0.044 in pre-gap for listed applications
• 14 mm thread diameter, 0.75 in reach, flat seat
• 5000 ohm resistance and non-removable nut terminal
• Heat range 5 for specified OE-style applications

Product Details

NGK is a long-standing OE supplier with broad coverage across domestic and import vehicles, and the Laser Platinum line focuses on consistent ignition service for everyday driving. This spark plug uses a platinum tip on the center electrode to support stable spark delivery, while the copper core and nickel ground electrode help maintain the construction expected in many factory-style ignition systems. The NGK 3573 spark plug is specified for a wide range of Chrysler, Dodge, Plymouth, Mitsubishi, and Hyundai vehicles, including long-running minivan and passenger car applications.

This part cross-references DENSO Auto Parts 4708 for the same application.

What It Helps Address

• Hard starting caused by worn spark plugs
• Rough idle from degraded ignition performance
• Misfire conditions tied to excessive plug wear
• Reduced fuel economy from inefficient combustion
• Loss of throttle response in aging ignition systems

Installation Notes

• Verify vehicle-specific fitment before installation.
• Set the spark plug gap to the listed specification for your application; many listed vehicles call for 0.044 in.
• Use the correct torque procedure for the cylinder head material and thread size.
• Inspect ignition wires or coil components during service to avoid repeat misfire issues.
• Confirm the flat seat and 14 mm thread specification match the engine requirement.

Quality Assurance

NGK manufactures spark plugs for a wide range of automotive applications and supports OE-level standards in its product design and production. Part number 3573 is built to the published specifications shown here for listed vehicle applications.

Fits 1978-2000 Dodge Caravan, Fits 1994-2000 Dodge Grand Caravan, Fits 1987-2000 Plymouth Voyager, Fits 1990-1998 Hyundai Sonata, and other listed Chrysler, Dodge, Plymouth, and Mitsubishi applications.