NPAUTO Ignition Coil & Spark Plug Kit — 6-Pack for 4.0L V6 (Frontier/Xterra/Pathfinder), Pre-Gapped

Complete 6-pack ignition coil and pre-gapped spark plug kit engineered to replace worn coils and plugs on compatible Nissan and Infiniti V6 engines, restoring stable spark and smoother running.

This NPAUTO set bundles six ignition coils with six matched, pre-gapped spark plugs designed for V6 4.0L and selected 3.5L Nissan/Infiniti applications. Each component is manufactured to meet or exceed OEM tolerances, and the kit is supplied with commonly referenced part numbers to help confirm fitment. Before ordering, compare your vehicle year and engine with the compatibility list to ensure proper match.

Which vehicles and engines will this NPAUTO kit fit?

The kit covers multiple Nissan, Infiniti and some Suzuki V6 models across specific years. Primary coverage is V6 4.0L applications (Frontier, Xterra, Pathfinder, NV series) and additional 3.5L V6 models listed for earlier model years. Use the part numbers and vehicle years below to verify exact compatibility with your engine.

• V6 4.0L coverage: 2005–2019 Nissan Frontier, Xterra, Pathfinder; 2012–2019 Nissan NV1500/2500/3500; 2009–2011 Suzuki Equator
• V6 3.5L coverage: select 2002–2008 Nissan/Infiniti models including Altima, Maxima, Murano, Quest, I35, QX4, and earlier Pathfinder years
• Cross-referenced coil numbers: UF349, 5C1403, 224338J115, 224488J111 and related OEM equivalents
• Always check the listing compatibility chart and your vehicle’s OEM part numbers before purchase

How do these coils and plugs improve engine performance?

Replacing degraded coils and fouled plugs with matched units restores reliable ignition timing and consistent spark energy. That can reduce misfires, smooth idle, and help recover responsive throttle feel without unrelated engine work. The plugs arrive pre-gapped to factory clearance to simplify installation.

• Re-establishes consistent spark to reduce misfires and rough idle
• Pre-gapped spark plugs save time and lower installation errors
• Engine responsiveness and drivability often return after full bank replacement
• Kit replaces all six cylinders at once to maintain balanced ignition

What are the quality and part number details I should know?

NPAUTO produces these coils and plugs using materials and quality controls intended to meet or exceed factory specifications. The listing includes multiple OEM cross-reference numbers so you can match them to your vehicle’s original parts. Packaging contains six coils and six spark plugs ready for bank replacement.

• Included: 6 ignition coils + 6 pre-gapped spark plugs per kit
• Reference coil numbers: UF-349, 3340082Z00, 224488J110 and others shown in the listing
• Manufactured to align with OEM dimensions and electrical requirements
• Sold as a full bank set to prevent mismatched new/old component performance

How should I install and verify fitment?

Installation follows standard ignition coil and spark plug replacement steps: disconnect battery, remove coil packs, swap plugs and coils, then reassemble. Torque plugs to manufacturer specs and clear any diagnostic codes after installation. If unsure, have a qualified technician complete the replacement.

• Disconnect negative battery cable before starting work
• Use the OEM torque spec for spark plugs and hand-tighten coils before final seating
• Clear fault codes with an OBD-II tool if needed after installation
• Refer to vehicle service manual for model-specific instructions and torque values

Who this kit is for: This NPAUTO ignition coil and spark plug set is intended for owners and technicians servicing Nissan, Infiniti or Suzuki V6 vehicles listed in the compatibility range who want a complete bank replacement. It’s ideal if your engine shows misfire codes, rough idle, hard starting, or you prefer replacing all six ignition items at once to maintain consistent performance across cylinders. Verify vehicle year, engine size and OEM cross-reference numbers before purchasing.