Bosch 7402 Spark Plug

Overview of Bosch Nickel Spark Plug 7402

The Bosch Nickel Spark Plug 7402 is engineered for reliable ignition performance in select Audi, BMW, Porsche, Saab, Suzuki, and Volkswagen models. Designed with durable nickel-yttrium electrodes and a ceramic insulator, this spark plug supports efficient combustion and consistent engine operation.

• Resistance: 6000 ohms for noise suppression
• Ground Electrode Tip Design: Multiple for improved spark distribution
• Pre-Gap Size: 0.9 mm for optimal ignition
• Ground Electrode Quantity: 2 for enhanced durability
• Hex Size: 16 mm for standard installation tools
• Manufacturer Heat Range: 7 suitable for moderate engine temperatures
• Seat Type: Flat for secure fitment
• Reach: 19 mm thread length
• Thread Diameter: 14 mm
• Center Electrode Core Material: Nickel-yttrium and copper for conductivity
• Insulator Type: Projected ceramic for heat resistance
• Resistor: Yes, to reduce electromagnetic interference
• Designed for 4-cycle engines

Detailed Product Description

The Bosch Nickel Spark Plug 7402 features a nickel-yttrium center and ground electrode tips, providing a balance of durability and conductivity. Its dual ground electrodes and multiple tip design help maintain consistent spark delivery, which is critical for smooth engine performance. The ceramic projected insulator enhances heat dissipation and prevents misfires. With a flat seat and 19 mm reach, this spark plug fits securely in compatible engines, ensuring proper combustion chamber sealing.

The Nickel product line from Bosch focuses on reliable ignition components with nickel-based electrodes, offering a cost-effective solution for vehicles requiring standard spark plug materials. This line is suitable for a range of European and Japanese vehicles, including many Audi, BMW, and Volkswagen models.

Compatible Vehicles and Applications

This spark plug is compatible with various models, including Audi 90, 90 Quattro, 100, 100 Quattro, A4, A4 Quattro, and A6 Quattro; BMW 318i, 318is, 318ti, 320i, 325i, 325is, 525i, 525iT, 528i, 530i, 540i, 740i, 740iL, 840Ci, and Z3; Porsche Boxster and Cabriolet; Saab 900 and 9000; Suzuki Verona; and Volkswagen Beetle, Golf, Jetta, Passat, and M3.

Common Issues Addressed by Bosch Spark Plug 7402

• Engine misfires and rough idling
• Difficulty starting the engine
• Reduced fuel efficiency
• Inconsistent acceleration
• Excessive exhaust emissions

Installation Notes and Tips

• Ensure the spark plug gap is set to 0.9 mm before installation
• Use a 16 mm socket wrench for proper tightening
• Apply anti-seize compound on threads if recommended by the vehicle manufacturer
• Torque to manufacturer specifications to avoid damage
• Inspect ignition wires and coils during replacement for optimal performance

Quality Assurance and Warranty

Bosch manufactures the Nickel Spark Plug 7402 to meet OEM standards, ensuring consistent quality and performance. The spark plug includes a built-in resistor to minimize electromagnetic interference with vehicle electronics. While specific warranty details vary by distributor, Bosch products typically come with a limited warranty covering defects in materials and workmanship.