Bosch 9723 Spark Plug

Overview of Bosch OE Fine Wire Iridium Spark Plug 9723

The Bosch OE Fine Wire Iridium Spark Plug 9723 is engineered for reliable ignition performance in select GM vehicles. Designed to meet OEM specifications, this spark plug supports efficient combustion and consistent engine operation in models like the Chevrolet Malibu and Buick LaCrosse.

• Part Number: 9723
• Brand Line: OE Fine Wire Iridium
• Resistance: 6000 ohms
• Ground Electrode Tip Design: Standard
• Ground Electrode Core Material: Copper
• Center Electrode Tip Material: Platinum-iridium
• Pre-Gap Size: 0.9 mm
• Thread Diameter: 14 mm
• Reach: 25 mm
• Seat Type: Tapered
• Hex Size: 16 mm
• Insulator Material: Ceramic
• Manufacturer Heat Range: 8

OE Fine Wire Iridium Product Line Details

The OE Fine Wire Iridium line from Bosch features spark plugs with fine wire iridium center electrodes and platinum-iridium ground electrodes. This combination enhances durability and ignition efficiency, providing stable spark performance over extended service intervals. The use of nickel-yttrium and copper in the electrode cores further supports thermal conductivity and wear resistance, making it suitable for 4-cycle engines in various GM vehicles.

Technical Description and Features

This Bosch spark plug incorporates a 6000 ohm resistor to reduce electrical noise and protect ignition components. The single ground electrode with a standard tip design is constructed from copper and coated with platinum-iridium and nickel-yttrium for improved longevity. The ceramic insulator is non-projected, ensuring reliable insulation and heat dissipation. With a tapered seat and 25 mm reach, this spark plug fits securely in compatible engines, maintaining optimal combustion chamber sealing.

Compatible Vehicles and Applications

• Buick LaCrosse, Regal, Verano
• Chevrolet Malibu, Impala, Cobalt, HHR
• GMC Terrain, Sierra
• Pontiac Solstice, G6
• Saab 9-5
• Saturn Sky, Vue
• Chevrolet Equinox, Captiva Sport

Common Issues Addressed by Bosch Spark Plug 9723

• Engine misfires and rough idling
• Reduced fuel efficiency due to incomplete combustion
• Difficulty starting the engine in cold conditions
• Ignition system interference and electrical noise
• Premature electrode wear affecting spark quality

Installation Notes and Tips

Ensure the spark plug gap is set to 0.9 mm before installation. Use a torque wrench to tighten the spark plug to manufacturer specifications to avoid damage to the tapered seat. Inspect the ignition coil and wiring for wear or damage during replacement. This spark plug is designed for 4-cycle engines and requires a 16 mm hex socket for installation.

Quality Assurance and Warranty

Bosch OE Fine Wire Iridium spark plugs are manufactured to meet strict OEM standards, ensuring consistent performance and durability. The use of high-quality materials such as platinum-iridium and copper enhances longevity. While specific warranty details may vary, Bosch products typically come with a limited warranty covering defects in materials and workmanship.