BDFHYK Ignition Coil Pack and Iridium Spark Plug Kit for Toyota 1.8L L4 — Set of 4, UF596/93501 OEM Fit

BDFHYK ignition coil pack UF596 paired with iridium spark plugs 93501 is a direct-fit four-piece ignition replacement kit for many Toyota, Prius, Lexus CT200h and Scion 1.8L engines.

This kit combines four high-quality coil packs and four iridium-tipped spark plugs engineered to restore consistent spark, smoother idling and reliable starts for compatible 1.8L L4 engines. All components are designed to match OEM fitment numbers and materials, using premium steel, imported rubber and high-grade wire for coils plus a durable iridium electrode and ceramic insulator for the plugs. Before ordering, confirm OE references and vehicle compatibility to ensure a proper fit.

Which vehicles and OE numbers does this kit fit?

This set is built to fit a range of Toyota family vehicles, Prius variants, Lexus CT200h and Scion xD models that use the 1.8L L4 engine. Fitment depends on specific OE numbers, so checking those against your vehicle is important to avoid mismatches.

• Compatible models: Toyota Corolla (2009–2013), Prius (2010–2015), Prius Plug-In (2012–2015), Prius v (2012–2015), Matrix (2009–2014)
• Lexus CT200h (2011–2015) and Scion xD (2008–2014)
• Common OE coil references: UF596, UF619, C1714, 90919-02252/90919-02258 and related numbers
• Spark plug OE reference: LKAR7BIX-11S / 93501 — verify against your engine spec

How do these coils and iridium plugs improve everyday driving?

When ignition coils or spark plugs age, symptoms such as rough idle, sluggish acceleration and hard starts can appear. Replacing both coils and plugs at once helps restore uniform firing across cylinders and reduces misfires, improving drivability in routine conditions.

• Iridium plugs maintain stable spark over longer service intervals
• Coils made with silicon steel and varnished wire resist heat and electrical wear
• Combined replacement minimizes cylinder-to-cylinder performance variance
• Helps reduce rough-start and low-RPM hesitation when properly installed

What are the build materials and quality details?

The coil packs use robust internal and external components selected for durability, while the spark plugs feature a fine iridium tip for consistent ignition. Manufacturer quality controls and sourced materials aim to match or exceed the longevity expectations for replacement ignition parts.

• Coils: silicon steel core, imported rubber seals, Germany-varnished copper winding
• Spark plugs: iridium electrode with advanced ceramic insulator
• Manufactured and inspected in established production facilities with industry experience
• Sold as a matched set of four coils and four plugs for complete cylinder coverage

How should I know when to replace these parts?

Typical triggers for replacement include high mileage and visible or performance symptoms. If your vehicle has rough idling, increased fuel use, misfires, or slow starts after 80,000 km (about 50,000 miles) or more, consider inspecting coils and plugs and replacing them if worn.

• Look for ignition misfire codes (P0300–P0304 series) or check-engine warnings
• Replace if ignition parts show corrosion, cracking, or damaged boots
• Perform full-set changes rather than single-cylinder swaps for balanced performance
• Always confirm OE numbers and torque specs during installation

Who is this for: This BDFHYK kit is intended for owners and mechanics who need a complete ignition refresh for compatible 1.8L Toyota-family engines. It suits drivers who want OEM-referenced replacements using higher-grade materials, and DIYers or service shops seeking a matched four-cylinder coil-and-plug package. Verify fitment with your vehicle’s OE references and consult a qualified technician for installation if you are not experienced with ignition-system work.