Vehicle Compatibility
Compatible with select:
Nissan
- 2003-2008 Nissan 350Z
Infiniti
- 2003-2008 Infiniti G35
- Infiniti FX35
- Infiniti M35
Engine Compatibility:
- 3.5L V6
- VQ35 Engine Platforms
Replaces OEM / Reference Part Numbers:
- UF401
- 22448-AL615
Always verify your production year and engine configuration before ordering, because Nissan enjoyed changing VQ parts mid-generation just to keep mechanics emotionally flexible.
HLZ PRODUCT Ignition coils are all the time made with high grade copper, designed for specific application and tested on road. Please review the information below carefully to ensure this part compatible with your vehicle.
What Do Ignition Coil Packs Do?
Ignition coils convert low battery voltage into the high-voltage spark needed to ignite the air-fuel mixture inside the engine cylinders.
When a coil pack fails, symptoms can include:
- Engine misfires
- Rough idle
- Hesitation under acceleration
- Reduced fuel economy
- Loss of power
- Check engine light
- Hard starting
Basically, your VQ starts sounding less like a sports car and more like a struggling lawn mower with commitment issues.
HLZ PRODUCT utilize the contemporary OE technology and components to bring quality to exceed OE requirements. Upgrade 15% more energy than OE coils.Our ignition coil packs will also be easily situated on both sides of the engine throughout the engine bay which will also be installed in minutes.you’ll experience more consistent, smooth engine starts very quickly.
Key Features
Complete Set of 6
Includes all six ignition coils needed for a full ignition refresh on VQ35-equipped vehicles.
Direct OEM-Style Replacement
Designed for factory-style fitment and plug-and-play installation.
Improved Spark Performance
Helps restore:
- Smooth acceleration
- Consistent ignition timing
- Better combustion efficiency
- Stable idle quality
Durable Construction
Built to withstand:
- High engine temperatures
- Daily driving vibration
- Heat cycling
- Long-term performance demands
Which is important because VQ engine bays run approximately one degree cooler than active volcanoes.
Excellent Reliability And Performance,Direct Bolt-in Replacement in Factory Location,Replaces Original Equipment Part Number
Reduces common ignition coil issues such as; no/hard start, long crank time, misfires, loss of power, inconsistent transmission shifts, spark plug fouling, premature catalytic converter failure, poor fuel economy, check engine light illumination
1 Year Limited Warranty – Please use enter your vehicle for your Amazon Garage above to see if this part is compatible with your vehicle
Common Signs Your VQ35 Needs New Coil Packs
Failing ignition coils often cause:
- Random misfire codes
- Hesitation at high RPM
- Stumbling during acceleration
- Poor fuel mileage
- Rough startup
- Flashing CEL under load
And yes, sometimes the car only misfires when you finally try to show somebody your “reliable” 350Z.
Why Replace All 6 Ignition Coils?
When one coil fails, the others usually aren’t far behind. Replacing the full set:
- Saves labor later
- Restores balanced ignition performance
- Prevents future misfires
- Improves long-term reliability
Because replacing one coil at a time on an aging VQ is basically automotive whack-a-mole.
Installation Notes
Installation is relatively simple with basic hand tools:
- Disconnect battery
- Remove engine cover
- Disconnect coil connectors
- Remove old coils
- Install new coils
- Reassemble and clear codes if needed
Typically a beginner-friendly repair unless Nissan hid the rear bolts beneath three layers of engineering sarcasm.
Final Thoughts
This Ignition Coil Pack Set of 6 is an excellent maintenance upgrade for aging Nissan 350Z and Infiniti VQ35 vehicles suffering from misfires, rough idle, or weak acceleration.
Whether you’re restoring performance to your daily driver or trying to keep your VQ-powered project from embarrassing itself at the next meet, replacing worn ignition coils is one of the smartest reliability upgrades you can make.
Because VQs may consume oil eventually… but they should at least misfire with dignity.
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