NGK 4302 Spark Plug

NGK Laser Platinum Spark Plug Overview

The NGK Laser Platinum Spark Plug 4302 is engineered for reliable ignition performance in select Toyota, Lexus, and Chevrolet vehicles. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and consistent engine operation.

• Part Number: 4302 (Bkr5ekpb-11)
• Center Electrode Tip Material: Platinum for enhanced durability
• Center Electrode Core Material: Copper for optimal conductivity
• Ground Electrode Quantity: 2 with standard design and nickel core
• Resistance: 5000 ohms to reduce electrical noise
• Pre-Gap Size: 0.044 inches for precise spark delivery
• Thread Diameter: 14.00 mm with 0.75 inch reach
• Hex Size: 5/8 inch for standard installation tools
• Electrical Terminal Type: Non-removable nut
• Seat Type: Flat for secure fitment
• Manufacturer Heat Range: 5
• Insulator Height: 50.50 mm

About the NGK Laser Platinum Spark Plug Line

The Laser Platinum Spark Plug line from NGK combines platinum-tipped electrodes with copper cores to balance durability and electrical performance. This design helps maintain stable ignition over extended service intervals, making it suitable for vehicles requiring consistent spark quality. The 4302 model incorporates these features to meet the ignition demands of various Toyota, Lexus, and Chevrolet engines.

Detailed Product Description

The NGK Laser Platinum Spark Plug 4302 features a platinum center electrode tip that resists wear and erosion, extending service life compared to conventional plugs. The copper core center electrode enhances thermal conductivity and electrical efficiency, promoting reliable ignition. Two ground electrodes made from nickel provide a stable spark path with a standard design to ensure compatibility with OEM specifications. The 5000 ohm resistance helps suppress radio frequency interference, protecting vehicle electronics. With a pre-gap size of 0.044 inches and a flat seat type, this spark plug is engineered for precise fit and optimal combustion in compatible engines.

Compatible Vehicles and Applications

• Compatible with Toyota models including 4Runner, Corolla, Paseo, Prizm, Supra, T100, Tacoma, Tercel, and Tundra
• Fits Lexus GS300 and SC300 models
• Suitable for Chevrolet vehicles requiring this specific spark plug specification
• Designed for secondary ignition systems requiring a 14 mm thread diameter and 0.75 inch reach

Common Issues Addressed by NGK Laser Platinum Spark Plug 4302

• Misfires caused by worn or degraded spark plugs
• Reduced fuel efficiency due to inconsistent ignition
• Engine hesitation or rough idling
• Radio frequency interference affecting vehicle electronics
• Premature electrode wear in high-heat operating conditions

Installation Notes and Tips

• Ensure the spark plug gap is set to 0.044 inches before installation if not pre-gapped
• Use a 5/8 inch socket wrench for proper torque application
• Verify flat seat compatibility with the engine cylinder head
• Do not attempt to remove the non-removable nut electrical terminal
• Follow manufacturer torque specifications to avoid damage

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring consistent performance and durability. The Laser Platinum Spark Plug 4302 is produced with high-grade materials including platinum and copper to maintain ignition reliability. While specific warranty details may vary, NGK products typically come with manufacturer-backed quality assurance to support long-term use in compatible Chevrolet, Lexus, and Toyota vehicles.