A-Premium Ignition Coil & Iridium Plug Kit — Set of 4, Direct Replacement for Toyota/Lexus/Scion 1.8–2.0L

A-Premium’s set of four ignition coils paired with four iridium spark plugs is a direct-replacement kit engineered to restore reliable ignition, consistent idle and improved fuel burn for select Toyota, Lexus and Scion 4-cylinder models.

This complete ignition kit replaces worn coils and plugs with matched components specified for multiple Toyota-family engines. The coils use OEM-style blade terminals and bolt-on mounting to the valve cover, while the iridium plugs feature a fine central electrode and a pre-set 1.0–1.1 in gap. Together they deliver consistent spark energy, predictable resistance values and an expected durability improvement over conventional plugs.

Which vehicles will this A-Premium kit fit?

The set is designed for a range of Toyota, Lexus and Scion 1.8L–2.0L four-cylinder applications. Fitment covers model years and VIN variations noted by manufacturer references—always verify with your VIN and engine code before purchase to ensure compatibility.

• Common fits: Lexus CT200h (2011–2017), Toyota Prius (2010–2015), Prius V (2012–2017).
• Also fits: Toyota Corolla (various 2009–2017 model years with VIN/engine distinctions) and Matrix (2009–2014).
• Scion coverage: iM (2016) and xD (2008–2014).
• Reference numbers included: 19205156, 9091902252, UF-596, UF596 for cross-checking.

How are the ignition coils and plugs specified?

The coils are manufactured to match OEM electrical and mechanical characteristics with measured primary and secondary resistances. Iridium plugs use a refined center electrode to extend service life and promote stable combustion.

• Coil specs: 4 terminals, blade terminal type, bolt-on mount at the valve cover.
• Electrical: primary resistance ~0.80 ohms (±10%); secondary ~6.8 kΩ (±10%).
• Spark plug: iridium central electrode, 12 mm thread, recommended gap 1.0–1.1 in.
• Installation torque guideline: 15–20 N·m for proper seal and longevity.

What practical benefits can I expect after installing this kit?

Replacing degraded coils and plugs restores consistent spark delivery for more reliable starts, steadier idle and improved throttle response. Iridium plugs typically outlast standard plugs, so maintenance intervals can be extended under normal driving conditions.

• Improved starting reliability and quicker engine response.
• Smoother idle and fewer misfires when numbers are within spec.
• Potential for better fuel efficiency and cleaner combustion versus worn parts.
• Durable iridium electrode extends plug life approximately threefold compared to conventional designs.

Is installation straightforward and what should I check during fitment?

Installation follows standard ignition coil and spark plug replacement procedures and requires basic hand tools. Confirm bolt-on coil alignment and use the recommended torque on plugs to avoid thread damage; inspect boots and wiring for corrosion or heat damage while replacing parts.

• Use a torque wrench for spark plugs: 15–20 N·m as specified.
• Ensure blade terminals are seated and wiring clips are secure.
• Check plug gap before installation and re-gap only if necessary to 1.0–1.1 in.
• Replace any damaged ignition leads or seals encountered during service.

Who is this for: This A-Premium kit is intended for DIY mechanics and professional technicians maintaining Toyota-family 4-cylinder engines listed in the fitment notes. Choose this set if you want matched coils and iridium plugs that meet OEM-style electrical specifications, come with cross-reference numbers for easy verification, and include a one-year unlimited-mileage warranty from A-Premium for added assurance.