OVERSTOCKDIRECT Iridium Spark Plugs 6-Pack SP580X (CYFS12YT4X) OEM-fit, Iridium Tip

OVERSTOCKDIRECT OEM Iridium Spark Plugs SP580X (6-pack) are factory-format replacement plugs engineered to match original specifications for reliable ignition performance. These SP580X (CYFS12YT4X) spark plugs are sold as a set of six and stamped for use where the SP580 (CYFS12YT4) was previously specified; they represent the updated OEM option now shipping from OVERSTOCKDIRECT. Before ordering, confirm vehicle compatibility using engine, drivetrain, trim level and plug quantity information — exact fitment varies by model and year. These plugs use an iridium alloy center electrode intended to provide consistent sparking characteristics while matching the thread, reach, and torque values expected from factory parts.

Which vehicles and engines will these SP580X plugs fit?

Fitment depends on the manufacturer’s recommended part number and the vehicle’s engine code. Always cross-reference SP580X or CYFS12YT4X with your vehicle’s service manual or parts catalog to ensure correct application. If a service history indicates SP580 (CYFS12YT4) was used, the SP580X is the updated compatible replacement.

• OEM part number match: SP580X / CYFS12YT4X
• Commonly replaces SP580 (CYFS12YT4) where specified by the manufacturer
• Confirm engine code, year, and number of cylinders before purchase

How do these OEM iridium plugs affect ignition reliability?

Iridium center electrodes are harder and more wear-resistant than standard alloys, which helps maintain consistent spark over a longer interval. Because these are OEM-spec parts, they are manufactured to the dimensions and tolerances recommended by the vehicle maker, supporting predictable combustion behavior when installed correctly.

• Iridium tip for extended electrode life and stable spark
• Factory thread and reach for correct sealing and heat transfer
• Sold in a 6-pack to cover common maintenance intervals or multi-cylinder engines

What should I know about installation and maintenance?

Install using a torque wrench to the vehicle manufacturer’s specified torque to avoid over- or under-tightening. Check spark plug gap if required by your vehicle’s service instructions; many OEM iridium plugs arrive pre-gapped but should still be verified. Replace plugs in the recommended service interval or when ignition-related symptoms appear.

• Use OEM torque specs and a clean, dry thread condition
• Verify or adjust gap per vehicle requirements before installation
• Replace in sets to maintain uniform ignition across cylinders

Are these genuine OEM parts and what does buying from OVERSTOCKDIRECT include?

This listing advertises genuine OEM-spec spark plugs supplied by OVERSTOCKDIRECT, emphasizing quality and fitment matching factory standards. The pack contains six plugs and comes with customer service support to help confirm part applications prior to purchase. OVERSTOCKDIRECT highlights its service and fulfillment processes to ensure you receive the correct updated SP580X item.

• Pack quantity: 6 spark plugs per listing
• Updated SP580X designation replaces older SP580 where applicable
• Customer support available to verify fitment before dispatch

Who is this for: Professional mechanics, DIY vehicle owners, and fleet technicians who need OEM-equivalent iridium spark plugs in multipacks for routine maintenance or engine servicing. If you require plugs that match factory dimensions and prefer the longevity of an iridium electrode, this 6-pack SP580X (CYFS12YT4X) from OVERSTOCKDIRECT is intended for vehicles that list this updated part number. Always confirm compatibility with your vehicle’s service information before ordering to avoid fitment issues.

FAQ

Q: Is SP580X the same as SP580?

A: SP580X is the updated designation that replaces SP580 (CYFS12YT4); verify vehicle compatibility before replacing.

Q: Does this listing include six spark plugs?

A: Yes, the OVERSTOCKDIRECT listing is for a 6-pack of SP580X (CYFS12YT4X) spark plugs.