NGK 95125 Spark Plug

NGK Ruthenium HX Spark Plug 95125

NGK 95125 is a Ruthenium HX High Ignitability spark plug built for modern ignition systems that need stable firing, precise gap control, and consistent combustion. It is a direct-fit style spark plug for a wide range of Audi, Volkswagen, and Porsche applications, including Audi A4, Audi Q5, Volkswagen GTI, and Porsche Macan coverage.

Key Features

• Ruthenium tip material for the center electrode
• High Ignitability projected square platinum ground electrode design
• 0.032 in pre-gap specification
• Copper core center and ground electrodes for heat transfer
• 1000 ohm resistance for ignition system compatibility
• Flat seat, 14 mm thread diameter, 5/8 in hex
• NGK part number 95125 / LFER7BHX

Product Details

This NGK Ruthenium HX High Ignitability Spark Plug is part of NGK’s OE-focused ignition lineup, backed by the company’s long history supplying spark plugs for domestic and import vehicles in North America. The ruthenium center electrode helps support reliable spark delivery, while the projected square platinum ground electrode design is engineered for high ignitability and consistent combustion performance. With a 0.032 inch gap specification on many listed applications, NGK 95125 is a practical replacement choice for late-model turbocharged and direct-injection vehicles that call for precise ignition control.

Compatible With Audi A3, A4, A4 allroad, A4 Quattro, A5 Quattro, A5 Sportback, A6, A6 Quattro, Q5, Q7, TT Quattro, TTS Quattro, S3, and Volkswagen Golf, GTI, Golf R, Jetta, Beetle, Golf Alltrack, Golf SportWagen, plus Porsche Macan, Cayenne, and Panamera applications shown in the fitment data. This part cross-references Dayco 95125 for the same application. NGK 95125 is also identified by part number LFER7BHX.

What It Helps Address

• Hard starting caused by worn or inconsistent spark plugs
• Misfire conditions related to plug wear or incorrect gap
• Rough idle and uneven combustion at low speed
• Reduced throttle response from weak ignition output
• Maintenance replacement for OE-style ignition service intervals

Installation Notes and Tips

Verify the vehicle-specific fitment and follow the listed gap requirement before installation. Several applications require the spark plug gap to be adjusted to 0.032 inches, while some Porsche applications list a 0.028 inch gap. Use the correct torque procedure for the cylinder head material and inspect ignition coils, boots, and wiring during service. Confirm the seat type, thread diameter, reach, and hex size match the engine specification before installation.

Quality Assurance

NGK is a major OE spark plug supplier with extensive coverage across automotive, motorcycle, marine, and small engine applications. The brand’s manufacturing and distribution network supports OE-level standards for durability and operational performance across its ignition product range.