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NGK 4339 Spark Plug
Reliable Ignition with NGK Standard Spark Plug 4339
The NGK Standard Spark Plug 4339 is engineered to deliver consistent ignition performance for select BMW and Lamborghini models. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and engine reliability.
- Resistance: 5000 ohms for optimal electrical performance
- Ground Electrode Tip and Configuration: Standard design with a single nickel core electrode
- Center Electrode: Copper core with nickel tip for balanced conductivity and durability
- Pre-Gap Size: .028 inches for precise spark gap
- Thread Diameter: 12.00 mm with a 5/8 inch hex size for secure installation
- Insulator Height: 50.00 mm with a flat seat type for proper sealing
- Manufacturer Heat Range: 8, suitable for specific engine requirements
- Electrical Terminal: Removable nut for flexible connection options
About the NGK Standard Spark Plug Line
The Standard Spark Plug line by NGK is designed to meet OEM specifications for a wide range of vehicles, including performance and luxury models like BMW M3, Z3, Z4, and Lamborghini Diablo. This line focuses on reliable ignition with standard electrode designs and materials, providing a balance of durability and cost-effectiveness for everyday driving conditions.
Technical Details and Compatibility
The NGK 4339 spark plug features a nickel ground electrode and copper core center electrode, ensuring stable electrical conductivity and resistance to wear. Its .75 inch reach and flat seat type make it compatible with engines requiring precise fitment. The removable nut electrical terminal allows for easy connection adjustments during installation. This spark plug is compatible with BMW models such as the M3, Z3, and Z4, as well as the Lamborghini Diablo, making it a suitable replacement part for these vehicles.
Common Applications and Problem Solving
- Restores proper ignition timing and spark delivery in BMW M3 and Z4 engines
- Addresses misfires and rough idling in Lamborghini Diablo ignition systems
- Improves fuel efficiency by ensuring consistent combustion
- Reduces engine hesitation caused by worn or faulty spark plugs
- Prevents ignition coil damage by maintaining correct resistance levels
Installation Notes and Tips
Before installation, verify the spark plug gap is set to .028 inches to match engine specifications. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended torque to avoid damage to the threads or seat. The 5/8 inch hex size allows for standard spark plug socket compatibility. Ensure the removable nut terminal is securely fastened to maintain proper electrical connection.
Quality Assurance and Warranty
NGK Standard Spark Plug 4339 is manufactured to meet strict quality standards, ensuring reliable performance and durability. While specific warranty details may vary, NGK products typically come with a limited warranty against manufacturing defects. Always consult vehicle and product documentation for warranty coverage and installation guidelines.
| Brand | NGK |
|---|---|
| Part Number | 4339 |
| Position | Standard Spark Plug |
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Nickel |
| Electrical Terminal Type | Removable Nut |
| Ground Configuration | Standard |
| Ground Electrode Core Material | Nickel |
| Ground Electrode Quantity | 1 |
| Ground Electrode Tip Design | Standard |
| Hex Size | 5/8 |
| Insulator Height | 50.00 |
| Manufacturer Heat Range | 8 |
| Part Number | DCPR8E |
| Pre-Gap Size | .028 |
| Reach | .75 |
| Resistance | 5000 |
| Seat Type | Flat |
| Stock Number | 4339 |
| Thread Diameter | 12.00 |
This part fits 12 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2008 | BMW | Z4 | 3.2L | L6 | N/A | Adjust spark plug gap to 0.032 inches.; Standard Spark Plug |
| 2007 | BMW | Z4 | 3.2L | L6 | N/A | Adjust spark plug gap to 0.032 inches.; Standard Spark Plug |
| 2006 | BMW | M3 | 3.2L | L6 | N/A | Adjust spark plug gap to 0.032 inches.; Standard Spark Plug |
| 2006 | BMW | Z4 | 3.2L | L6 | N/A | Adjust spark plug gap to 0.032 inches.; Standard Spark Plug |
| 2005 | BMW | M3 | 3.2L | L6 | N/A | Adjust spark plug gap to 0.032 inches.; Standard Spark Plug |
| 2004 | BMW | M3 | 3.2L | L6 | N/A | Adjust spark plug gap to 0.032 inches.; Standard Spark Plug |
| 2003 | BMW | M3 | 3.2L | L6 | N/A | Adjust spark plug gap to 0.032 inches.; Standard Spark Plug |
| 2002 | BMW | M3 | 3.2L | L6 | N/A | Adjust spark plug gap to 0.032 inches.; Standard Spark Plug |
| 2002 | BMW | Z3 | 3.2L | L6 | N/A | Adjust spark plug gap to 0.032 inches.; Standard Spark Plug |
| 2001 | BMW | M3 | 3.2L | L6 | N/A | Adjust spark plug gap to 0.032 inches.; Standard Spark Plug |
| 2001 | BMW | Z3 | 3.2L | L6 | N/A | Adjust spark plug gap to 0.032 inches.; Standard Spark Plug |
| 1990 | Lamborghini | Diablo | 5.7L | V12 | N/A | Spark Plug fitment note: 0.028 inches gap with OE equivalent design.; Standard 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.