Set of 4 UF549 Ignition Coil Pack and 9029 Spark Plugs 4 Pack

In this review the Set of 4 UF549 Ignition Coil Pack and 9029 Spark Plugs 4 Pack is evaluated for drivers who need a direct, cost-effective replacement for common Nissan and related L4 engines; the single biggest reason to buy is dependable ignition performance that addresses misfires and stalling. The reviewer tested fitment notes and construction claims, and found the kit suitable for routine maintenance and repair on compatible models, offering a clear upgrade path for owners experiencing rough idle or reduced fuel economy.

Key Features

• Multivehicle Compatibility: The kit is compatible with many Nissan and Infiniti L4 engines so one purchase can serve several model years and variants.
• Durable Coil Materials: Coil packs use silicon steel cores, high-pressure rubber sleeves and epoxy resin to resist cracking and shorting for longer service life.
• High-quality Wire: Germany-imported venameled wire is used in the coils to support consistent high-voltage output across the engine speed range.
• Iridium Spark Plugs: The 9029 spark plugs have fine iridium electrodes and CNC-machined parts for faster starts and better ignition stability.
• OE Fit and Function: Coils and plugs meet or exceed OE specifications so they install cleanly and restore original performance in most compatible vehicles.
• Complete Kit: The package includes four coils, four spark plugs and a manual, simplifying a full-ignition service in one purchase.

Who It's For

This kit is best for owners of compatible Nissan Sentra, Altima, Cube, Rogue, March, INFINITI QX60 and similar models with 1.6L, 1.8L, 2.0L or 2.5L L4 engines who need to resolve misfiring, stalling or rough idle and want a full ignition pack replacement rather than individual parts. Independent mechanics and DIYers doing scheduled maintenance will appreciate the matched coils and plugs that aim for OE-level fit.

Those who should look elsewhere include drivers with non-L4 engines, vehicles outside the listed fit years, or anyone requiring dealer-branded parts with factory warranty coverage; also, professional tuners seeking performance-only coils should choose specialized high-performance options instead.

Pros & Cons

Pros

• Good compatibility across many Nissan and Infiniti L4 models makes sourcing easier.
• Coil construction materials and iridium plugs contribute to stable ignition and longevity.
• Customers report resolving stuttering and improved fuel economy, indicating effective functionality.

Cons

• Fit should be verified against the vehicle picture or detail page because compatibility spans many years and variants.

Specifications

Brand	SYKRSS
Included Parts	4 ignition coils, 4 spark plugs, 1 manual
Coil OE Numbers	UF-549, C1696, COP292 and related OE references
Spark Plug OE Number	9029 (compatible with 22401JA01B, 22401JA07B, 22401JD01B)
Engine Compatibility	1.6L, 1.8L, 2.0L, 2.5L L4 (select Nissan/Infiniti/Suzuki models)
Coil Materials	Silicon steel core, high-pressure rubber sleeve, epoxy resin, venameled wire
Spark Plug Materials	Iridium electrode, isostatic ceramic insulator, CNC metal parts

Our Verdict

The UF549 coil pack and 9029 spark plug kit is a practical, value-focused replacement for owners of compatible Nissan and Infiniti L4 vehicles who need to cure misfires, rough idle or check engine ignition faults. It combines durable coil construction with iridium plugs to restore reliable ignition at a lower cost than many OEM options, making it a smart choice for routine repair and maintenance.

Frequently Asked Questions

Will these fit my vehicle?
Check the fitment picture and detail page against your model year and engine size; the kit covers many Nissan L4 engines but fitment varies by year and variant.

Are the spark plugs high quality?
Yes, the 9029 plugs feature iridium electrodes and CNC-machined parts intended to improve ignition and reduce wear.

What common problems does this kit address?
The kit is designed to address misfiring, stalling, rough idle, poor acceleration and related ignition faults when coils or plugs are the cause.