Description
The NGK PLFR5A-11 is a Laser Platinum OE-style spark plug engineered for modern engines requiring long service intervals and consistent ignition performance. Featuring a fine-wire platinum center electrode and platinum-tipped ground electrode, it delivers excellent durability, fuel efficiency, and smooth operation—especially in distributorless ignition systems.
Key Features
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Double platinum design (center + ground electrode) for extended lifespan
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Fine-wire center electrode improves ignitability and cold starts
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OE-equivalent construction for precise fit and performance
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Anti-fouling performance for stable idle and reduced misfires
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Trivalent plating prevents corrosion and seizing
- Designed for modern fuel-injected engines with long maintenance intervals
Specifications
General
- Part Number: PLFR5A-11
- Stock Number: 6240
- Heat Range: 5
- Resistor: Yes (5k Ohm)
- Pre-Gap: 1.1 mm
Shell
- Thread Size: M14 x 1.25
- Reach: 26.5 mm
- Seat Type: Flat (gasket)
- Hex Size: 5/8" (16 mm)
- Terminal Type: Non-removable (solid terminal)
Electrodes
- Center Electrode: Fine-wire platinum (copper core)
- Ground Electrode: Platinum-tipped
- Configuration: J-gap
- Projection: Mid projection
Fitment Highlights
Infiniti
- FX35 / FX45 (2003–2008)
- G35 (2003–2007)
- I35 (2002–2004)
- M35 / M45 (2003–2010)
- Q45 (2002–2006)
- QX4 (2001–2003)
- QX56 (2004–2006)
Nissan
- 350Z (2003–2006)
- Altima (2002–2006, 2.5L & 3.5L)
- Armada (2005–2006)
- Frontier (2005–2006, 4.0L)
- Maxima (2002–2008)
- Murano (2003–2007)
- Pathfinder (2001–2006)
- Quest (2004–2009)
- Sentra (2000–2006)
- Titan (2004–2006)
- Xterra (2005–2006)
Performance Notes
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Designed for OE platinum applications—don’t downgrade to standard nickel plugs
- Typical lifespan: 60,000–100,000 miles depending on engine
- Ideal for VQ-series Nissan/Infiniti engines and similar setups
- Maintains consistent spark over time, reducing maintenance frequency
