Bosch 8501 Spark Plug

Reliable Ignition Performance for Audi, Porsche, and Volkswagen

The Bosch EVO 8501 spark plug is engineered to deliver consistent ignition and efficient combustion for a range of Audi, Porsche, and Volkswagen models. Designed with advanced materials and precise specifications, this spark plug supports optimal engine performance and durability.

• Part Number: 8501
• Brand Line: Bosch EVO
• Center Electrode Tip Material: Iridium
• Ground Electrode Core Material: Copper with Platinum and nickel-chromium-iron tip
• Pre-Gap Size: 0.65 mm
• Heat Range: Manufacturer specified 5
• Thread Diameter: 14 mm
• Reach: 26.5 mm
• Seat Type: Flat
• Hex Size: 16 mm
• Resistor: Yes, 1000 Ohms resistance
• Insulator Material: Ceramic, projected type
• Designed for 4-cycle engines

Detailed Bosch EVO Spark Plug Features

The Bosch EVO 8501 spark plug incorporates a combination of iridium and platinum materials for the center and ground electrode tips, enhancing wear resistance and maintaining stable spark performance over time. The copper core in both electrodes ensures excellent thermal conductivity, which helps dissipate heat effectively. With a pre-gap size of 0.65 mm and a heat range of 5, this spark plug is optimized for a balance between performance and durability in compatible engines. The flat seat and 14 mm thread diameter provide a secure fit, while the 16 mm hex size allows for straightforward installation and removal. The ceramic projected insulator improves insulation and reduces misfires, and the integrated 1000 Ohm resistor helps suppress electrical noise interference.

Compatible Vehicles and Applications

This Bosch EVO 8501 spark plug is compatible with a wide range of Audi, Porsche, and Volkswagen vehicles, including but not limited to:

• Audi A3, A4, A5, A6, A7, A8, Q3, Q5, Q7, RS3, RS7, S3, S6, S7, S8, TT models
• Porsche Macan
• Volkswagen Beetle, Golf, Jetta, Passat, Tiguan, Atlas, Arteon, and related Quattro and Sportback variants

Common Issues Addressed by Bosch EVO 8501 Spark Plug

• Engine misfires and rough idling
• Reduced fuel efficiency and increased emissions
• Difficulty starting the engine
• Loss of power and acceleration
• Ignition system electrical interference

Installation Notes and Tips

Ensure the spark plug gap is set to the specified 0.65 mm before installation if adjustment is necessary. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended torque to avoid damage to the threads or seat. The 16 mm hex size allows for compatibility with standard spark plug sockets. Always inspect the ignition system components for wear or damage during replacement to maintain optimal engine performance.

Quality Assurance and Warranty

Bosch is a recognized manufacturer known for precision-engineered ignition components. The EVO line, including part number 8501, is manufactured to meet strict quality standards for durability and performance. While specific warranty details are not provided here, Bosch products typically come with manufacturer-backed warranties to ensure reliability and customer confidence.