NGK 4853 Spark Plug

NGK Laser Platinum Spark Plug for OE-Style Ignition

The NGK Laser Platinum Spark Plug, part number 4853, is built for drivers who want OE-style ignition performance and dependable service life. It uses a platinum center electrode, copper core, and standard nickel ground electrode design to support consistent spark delivery in compatible Audi applications.

Compatible With 1991-1997 Audi 200 Quattro, S4, and S6 applications, this plug is specified with a 0.025 in. gap in the listed fitment notes and is a direct match for vehicles calling for NGK PFR7B / stock number 4853.

Laser Platinum Product Line

NGK’s Laser Platinum line is positioned for original-equipment replacement needs, combining platinum-tipped center electrode construction with OE-focused dimensions and heat range control. For Audi 200 Quattro, Audi S4, and Audi S6 service, this line supports stable ignition performance while matching the factory-style plug format used in the listed applications.

Key Features

• Part number 4853, NGK PFR7B
• Laser Platinum spark plug design for OE-style replacement
• Platinum center electrode tip with copper core
• Standard nickel ground electrode with one ground electrode
• 5,000 ohm resistance
• 14 mm thread diameter, 0.75 in. reach, flat seat
• 5/8 in. hex size for standard service tools
• Pre-gapped at 0.028 in. per listed specification
• Heat range 7 for the specified application

Detailed Description

NGK manufactures this Laser Platinum Spark Plug as an OE-equivalent ignition component for select Audi turbo and performance applications. The platinum center electrode helps maintain consistent firing characteristics, while the standard ground configuration and 14 mm flat-seat design align with factory-style service requirements. This part number 4853 is listed for 1991 Audi 200 Quattro, 1992-1994 Audi S4, and 1995-1997 Audi S6 fitments, making it a focused replacement choice for those vehicles.

This part cross-references Anchor 3265 and 3273 for the same application.

What It Helps Address

• Misfires caused by worn or fouled spark plugs
• Hard starting related to weak ignition output
• Rough idle from inconsistent spark delivery
• Reduced throttle response from degraded plug performance
• Service replacement needs for OE-style Audi ignition maintenance

Installation Notes and Tips

Verify the vehicle’s required plug gap and heat range before installation. The listed fitment notes call for a 0.025 in. gap on the Audi applications shown, while the plug is pre-gapped at 0.028 in. as supplied. Confirm the engine specification against the service manual and adjust only if the application calls for it. Use the correct 5/8 in. spark plug socket and tighten to the manufacturer’s torque specification.

Quality Assurance

NGK is a long-established OE supplier with broad coverage across automotive applications in North America and global manufacturing and distribution support. The brand’s focus on original-equipment standards and controlled production processes supports consistent fit and performance for the listed Audi applications.