OE Quality
60-Day Returns

NGK 7348 Spark Plug
NGK Iridium IX Spark Plug Overview
The NGK Iridium IX Spark Plug 7348 is engineered for reliable ignition performance in Ford Mustang vehicles. Designed with advanced materials and precise specifications, this spark plug supports efficient combustion and consistent engine operation.
- Iridium center electrode tip for enhanced durability
- Taper cut ground electrode tip design
- Copper core center electrode for improved conductivity
- Standard ground configuration with nickel ground electrode core
- Non-removable nut electrical terminal type
- Pre-gap size of 0.040 inches for optimal spark
- Tapered seat type and 14mm thread diameter
- Hex size of 5/8 inch for installation
- Manufacturer heat range 6 suitable for Ford Mustang engines
Detailed Product Description
The NGK Iridium IX Spark Plug 7348 features a fine iridium center electrode tip that provides a stable and efficient spark, contributing to improved combustion and fuel efficiency. The copper core center electrode enhances electrical conductivity, while the taper cut ground electrode tip design ensures consistent spark exposure. The spark plug’s nickel ground electrode core and standard ground configuration offer durability and reliable grounding. With a pre-gap size of 0.040 inches and a tapered seat type, this spark plug is optimized for precise ignition timing and secure fitment. The non-removable nut electrical terminal type simplifies installation and maintenance.
The Iridium IX Spark Plug line from NGK is designed to deliver long-lasting performance and durability. Iridium, being a hard and heat-resistant metal, allows for a finer electrode tip that reduces voltage requirements and improves ignitability. This product line is particularly suited for performance-oriented vehicles like the Ford Mustang, where consistent ignition and engine responsiveness are critical.
Compatible Vehicles and Applications
- Compatible with Ford Mustang models requiring part number 7348
- Ideal for secondary ignition system replacement
- Suitable for addressing ignition misfires and rough idling
- Helps improve cold start performance and throttle response
- Can resolve issues related to poor fuel economy and engine hesitation
Installation Notes and Tips
- Ensure the spark plug gap is set to 0.040 inches before installation
- Use a 5/8 inch socket wrench for proper tightening
- Apply anti-seize compound on threads if recommended by the vehicle manufacturer
- Torque to manufacturer specifications to avoid damage to the tapered seat
- Inspect ignition wires and boots during replacement for optimal performance
Quality Assurance and Warranty
NGK spark plugs, including the Iridium IX Spark Plug 7348, are manufactured to meet strict quality standards for durability and performance. The use of premium materials such as iridium and copper ensures long service life and consistent ignition. While specific warranty details may vary, NGK products typically come with manufacturer-backed quality assurance to support reliable operation in compatible Ford Mustang vehicles.
| Brand | NGK |
|---|---|
| Part Number | 7348 |
| Position | Iridium IX Spark Plug |
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Iridium |
| Electrical Terminal Type | Non-Removable Nut |
| Ground Configuration | Standard |
| Ground Electrode Core Material | Nickel |
| Ground Electrode Quantity | 1 |
| Ground Electrode Tip Design | Taper Cut |
| Hex Size | 5/8 |
| Insulator Height | 53.00 |
| Manufacturer Heat Range | 6 |
| Part Number | UR6IX |
| Pre-Gap Size | .040 |
| Reach | .46 |
| Resistance | 5000 |
| Seat Type | Tapered |
| Stock Number | 7348 |
| Thread Diameter | 14.00 |
This part fits 7 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1995 | Ford | Mustang | 5.8L | V8 | N/A | Set spark plug gap to 0.050 inches.; Iridium IX Spark Plug |
| 1972 | Ford | Mustang | N/A | H.O.; Gap 0.034"; Iridium IX Spark Plug | ||
| 1972 | Ford | Mustang | 5.0L | V8 | N/A | H.O.; Gap 0.034"; Iridium IX Spark Plug |
| 1971 | Ford | Mustang | N/A | H.O.; Gap 0.034"; Iridium IX Spark Plug | ||
| 1971 | Ford | Mustang | 5.0L | V8 | N/A | H.O.; Gap 0.034"; Iridium IX Spark Plug |
| 1970 | Ford | Mustang | N/A | H.O.; Gap 0.034"; Iridium IX Spark Plug | ||
| 1970 | Ford | Mustang | 5.0L | V8 | N/A | H.O.; Gap 0.034"; Iridium IX Spark Plug |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.