BDFHYK Ignition Coil Pack & Iridium Spark Plug Kit for Nissan 2.5L — Set of 4, UF549/9029, Improved Durability & Stable Idle

BDFHYK ignition coil pack UF549 paired with iridium spark plug 9029 is a four-piece replacement kit designed to restore ignition performance for 2.5L Nissan engines across Altima, Rogue, Sentra, Versa, Cube and NV200 model years listed.

This kit bundles four high-quality coil packs and four iridium-tipped spark plugs engineered as direct-fit replacements for many Nissan 2.5L gasoline engines and compatible Chevrolet City Express applications. The components use upgraded materials — varnished wire, silicon steel and iridium electrodes — for more consistent spark delivery, longer life, and easier starting compared with worn OE parts. Before purchasing, verify OE part numbers (UF549, 9029 and listed equivalents) against your vehicle’s stamp or dealer reference to confirm fitment.

How will this coil-and-plug set affect engine starting and idle?

Replacing degraded coils and plugs often restores quicker starts and steadier idling by re-establishing reliable spark timing and strength. The iridium tips require less voltage and resist wear, while the coil construction reduces electrical losses and heat-related breakdown.

• Faster cold and hot starts with consistent ignition spark.
• Smoother idle and reduced misfires from uniform spark energy.
• Iridium plugs retain gap and performance longer than standard plugs.

Which vehicles and OE numbers are supported by this BDFHYK kit?

This set is intended for many Nissan 2.5L platforms and compatible Chevrolet City Express models; check the OE cross-references provided to ensure exact match. The product lists multiple OE equivalents so you can confirm against the part on your engine.

• Common fit: Nissan Altima (2007–2013), Rogue (2008–2013), Sentra (2007–2019), Versa (2007–2011).
• Also for Cube (2009–2014), NV200 (2013–2021) and Chevrolet City Express (2015–2018).
• OE references: UF549/22448ED000/22448JA00A and spark plug 9029/22401JA01B, confirm before purchase.

What materials and manufacturing details improve durability?

BDFHYK builds the coil with silicon steel cores, high-grade varnished wire and import-quality rubber to resist heat and vibration. The plugs use iridium electrodes and advanced ceramic insulators to preserve gap and deliver long service life under repeated ignition cycles.

• Coil pack: silicon steel, Germany-imported varnished wire, Japan-sourced rubber seals.
• Spark plug: iridium electrode for wear resistance and consistent performance.
• Designed to meet or replace listed OE part specifications for fit and function.

How do I know when to replace these parts?

If your vehicle has traveled beyond roughly 80,000 km or shows symptoms—shaking, slow acceleration, hard starts, poor fuel economy—these ignition components are common wear items to inspect and replace. Changing both coils and plugs together prevents repeated labor costs and restores balanced cylinder performance.

• Signs: engine shake, frequent misfires, hesitation, increased fuel use.
• Service interval: consider inspection and replacement after ~80,000 km or when symptoms appear.
• Replace as a matched set to maintain uniform ignition across cylinders.

Who this kit is for: drivers and independent mechanics who need a direct-fit, cost-effective ignition repair for Nissan 2.5L gasoline engines and compatible Chevrolet applications. It's suitable for routine maintenance, mid-life refreshes to regain drivability, or as a preventative service before long trips. Always cross-check the listed OE references with your vehicle’s parts label or dealer database to ensure compatibility before ordering.