NGK 4253 Spark Plug

NGK Laser Platinum Spark Plug 4253

NGK Laser Platinum Spark Plug 4253 is built for drivers who need stable ignition performance and OE-style fitment details in a replacement spark plug. It uses a platinum center electrode tip, a copper core design, and a 5,000 ohm resistor to support consistent spark delivery and reduced electrical interference.

The Laser Platinum line focuses on durable ignition performance with a platinum tip for the center electrode and a standard ground electrode layout. For vehicles such as Honda Civic and Toyota Corolla applications that call for this style of plug, NGK 4253 offers a direct-spec replacement option with the dimensions and heat range needed for proper engine operation.

Key Features

• NGK Laser Platinum Spark Plug, part number 4253
• Platinum center electrode tip for long-lasting ignition performance
• Copper core center and ground electrode construction
• 5,000 ohm resistor helps control radio-frequency interference
• Standard ground electrode design with one ground electrode
• Pre-gapped to .032 for specified applications
• 14 mm thread diameter, .75 reach, flat seat
• 5/8 hex size and non-removable nut terminal
• Manufacturer heat range 7

Product Details

NGK 4253, also identified as PZFR7G-G, is a Laser Platinum spark plug engineered to match the dimensional and electrical requirements of specific ignition systems. The platinum tip supports consistent firing characteristics, while the copper core construction helps manage heat transfer. With a flat seat, .032 pre-gap, and standard ground configuration, this spark plug is suited for engines that require precise secondary ignition performance. If you are servicing a Honda Civic or Toyota Corolla and need an NGK spark plug with OE-style specifications, 4253 is a direct-reference part to verify against your original plug.

This part cross-references NGK (e.g., PZFR7G-G) for the same application.

Common Issues This Part May Address

• Rough idle caused by worn spark plug electrodes
• Hard starting from weak or inconsistent spark output
• Misfire conditions related to plug wear or incorrect heat range
• Reduced fuel efficiency from degraded ignition performance
• Radio interference concerns in ignition systems that require a resistor plug

Installation Notes and Tips

Verify the original plug’s thread diameter, reach, seat type, heat range, and gap before installation. NGK 4253 uses a 14 mm thread, .75 reach, flat seat, and .032 pre-gap, so it should be matched to the engine specification exactly. Inspect ignition coils, plug wires, and boots during service, and apply the manufacturer’s torque specification for the engine being serviced. Confirm fitment for your Honda Civic, Toyota Corolla, or other listed application before installation.

Quality Assurance

NGK is a long-established OE supplier with broad coverage across domestic and import vehicles, motorcycles, marine engines, and small engines. Its manufacturing and distribution network supports consistent product standards for ignition components, and this Laser Platinum spark plug reflects that OE-focused approach to durability and performance.