NGK 7558 Spark Plug

NGK V-Power Spark Plug 7558 Overview

NGK V-Power Spark Plug 7558 is an OE-style ignition component built for steady spark delivery and reliable secondary ignition performance. It uses a copper center electrode core, nickel center and ground electrode tips, and a standard ground configuration to support consistent combustion in a wide range of import and domestic applications.

The V-Power spark plug line is positioned for drivers who want a direct replacement plug that follows original equipment standards. Part number 7558, also identified as NGK ZFR5F, is specified with a 0.032-inch pre-gap, 14 mm thread diameter, 0.75-inch reach, flat seat, and 5 k? resistance.

Key Features

• NGK V-Power Spark Plug line for OE-style ignition service
• Part number 7558 / ZFR5F
• Copper center electrode core for dependable heat transfer
• Nickel center and ground electrode tip materials
• Standard ground electrode design with one ground electrode
• 0.032-inch pre-gap for specified applications
• 5/8-inch hex size, 14 mm thread diameter, and flat seat
• 5 k? resistance for ignition system compatibility

Detailed Description

NGK builds this spark plug with the manufacturing experience of a major OE supplier serving domestic and import vehicles in North America. The V-Power design focuses on stable ignition performance, with a standard ground electrode layout and nickel tip materials that support consistent spark delivery in everyday driving conditions. The copper core helps manage heat, while the 0.032-inch pre-gap and flat-seat design align with the listed applications.

This part number 7558 spark plug is listed for vehicles including the 2008-2009 Saturn Astra, 1998-2002 Mazda 626, 1995-2002 Mazda Millenia, 1993-1997 BMW 850Ci, 1988-1996 BMW 750iL, 1994-1995 BMW 850CSi, and 1991-1992 BMW 850i. It is a practical choice when searching for an NGK 7558 spark plug for Mazda 626 ignition service or an OE-equivalent spark plug for BMW 750iL and Saturn Astra applications.

This part cross-references Bosch FQR8LEU2 and Champion Spark Plug 97 for the same application.

What It Helps Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle from inconsistent spark delivery
• Misfire conditions related to aged secondary ignition components
• Reduced combustion efficiency from excessive plug wear
• Service replacement needs for OE-specified plug intervals

Installation Notes and Tips

Verify the vehicle application before installation and confirm the specified gap for the engine. For listed fitments, adjust the spark plug gap to 0.032 inches where noted, and follow the vehicle manufacturer’s service procedure for torque and plug access. Check the ignition system, plug wires, and coil condition during service to help prevent repeat misfire concerns.

Quality Assurance

NGK is a long-established OE supplier with North American manufacturing, inventory, and distribution support. The brand’s focus on original equipment standards and broad vehicle coverage makes this spark plug a dependable replacement choice for routine ignition maintenance.

Compatible Vehicles

• Fits 2008-2009 Saturn Astra, N/A; Gap 0.028"; OE Equivalent Design; 25,000 mi OE Mfr Recommended Service Interval; V-Power Spark Plug
• Fits 1998-2002 Mazda 626, N/A; Adjust spark plug gap to 0.032 inches.; V-Power Spark Plug
• Fits 1995-2002 Mazda Millenia, N/A; Adjust spark plug gap to 0.032 inches.; V-Power Spark Plug
• Fits 1993-1997 BMW 850Ci, N/A; 0.032" Gap; OE Equivalent Design; V-Power Spark Plug
• Fits 1988-1996 BMW 750iL, N/A; 0.032" Gap; OE Equivalent Design; V-Power Spark Plug
• Fits 1994-1995 BMW 850CSi, N/A; 0.032" Gap; OE Equivalent Design; V-Power Spark Plug
• Fits 1991-1992 BMW 850i, N/A; 0.032" Gap; OE Equivalent Design; V-Power Spark Plug