Ignition Coil Pack and Spark Plugs for Toyota/Lexus - Reliable Drive

In this review the focus is on a combined ignition coil pack and spark plug kit designed for several Toyota and Lexus V8 models. The bottom line: this kit is for owners who want a direct OE-spec replacement to restore a smooth idle and fix misfires without sourcing parts separately. It replaces failing coils and plugs with eight UF230 coils and eight double iridium 3764 plugs, and the most compelling reason to buy is the matched coil-and-plug approach that targets ignition faults quickly and returns drivability to near-new levels.

Key Features

• OE specifications: The kit is built to meet strict factory specs so it fits and performs like the original parts on compatible Toyota and Lexus V8 models.
• Matched kit: Including 8 UF230 ignition coil packs plus 8 double iridium spark plugs ensures all cylinders receive a consistent replacement for balanced combustion.
• Fast ignition: Coils claim rapid response within 0.1-0.2 seconds, which helps eliminate hesitation and restore crisp throttle response.
• Durable spark plugs: Double iridium electrodes are specified for longer life and more stable idle, which supports improved fuel efficiency over time.
• High temperature resistance: Coils are rated for high temperature corrosion resistance and RF interference protection to maintain reliable operation in harsh engine bays.
• Direct fit terminals: Blade terminal type and 12V design mean straightforward swap-in installation for the listed models.

Who It's For

The kit is best suited for owners of the listed Toyota and Lexus models with V8 4.7L or related engines who are experiencing misfires, rough idle, poor fuel economy, or illuminated check engine lights and want a complete ignition refresh in a single purchase. It is also useful for routine maintenance when replacing all coils and plugs together makes sense to ensure consistent performance across cylinders.

It is less appropriate for owners who need a single coil or single plug, vehicles outside the exact fitment years and engines listed, or shoppers seeking OEM-branded factory boxes. Buyers should verify year/make/model fitment before ordering.

Pros & Cons

Pros

• Direct OE-spec replacement provides a near drop-in fit that solved misfire reports in several users.
• The matched set of coils and double iridium plugs improves starting, idle stability, and perceived performance.
• Good value for money when replacing all eight ignition components at once instead of buying piecemeal parts.

Cons

• Quality impressions are mixed among customers, so some buyers reported concerns about part finish compared with original factory items.
• Not ideal if only a single cylinder part needs replacement, since the kit is a full 8-cylinder set.

Specifications

Included items	8 UF230 ignition coils + 8 3764 double iridium spark plugs
Voltage	12V
Coil terminal type	Blade
Coil terminal quantity	4
Spark plug material	Double iridium
Compatible makes	Toyota and Lexus V8 models listed

Our Verdict

This matched ignition coil and spark plug kit is a practical, cost-effective choice for owners of the specified Toyota and Lexus models who want to cure misfires and restore smooth operation. It offers OE-matching fitment, faster ignition response, and longer-life iridium plugs, making it a sensible full-replacement option for those replacing all cylinders at once and seeking improved drivability and value.

Frequently Asked Questions

Will this kit fit my 2005 Tundra?
Check exact engine and model year fitment; the kit is specified for 2005-2009 Tundra and Sequoia with the 4.7L engine.

Are the spark plugs iridium?
Yes, the included spark plugs use a double iridium central electrode for longer life and stable idle.

Should I replace all coils and plugs at once?
For consistent performance and to avoid repeated labor, replacing all eight coils and plugs together is recommended when multiple cylinders show issues.