OVERSTOCKDIRECT Iridium Spark Plugs SP530X (4‑Pack) OEM Fit for Ford 4‑Cyl - Long Life, Iridium Tip

OVERSTOCKDIRECT SP530X (AYFS32YRX) is a genuine OEM iridium spark plug 4‑pack made to replace SP530 and fit select Ford, Lincoln, and Mercury 4‑cylinder engines.

These plugs are the factory‑specified iridium replacement for many Ford family 4‑cylinder applications and are sold as a set of four — the typical quantity needed for a full tune‑up on compatible engines. They supersede the older SP530 (AYFS32YR) and are manufactured to the OEM fit, form, and function standards so you can swap them in without altering ignition settings. Before purchasing, confirm your vehicle year, model, and engine displacement; installing an incorrect plug can cause drivability issues.

Which vehicles and engines do these SP530X plugs fit?

The SP530X is application‑specific and covers a range of Ford, Lincoln, and Mercury four‑cylinder engines across various years. Fitment includes common models like the Ford Escape, Fusion, C‑Max, Maverick, Transit Connect and equivalents in Lincoln and Mercury lines. Always verify compatibility against your VIN or owner’s manual.

• Ford: C‑Max (2013–2018 2.0L), Escape (2009–2026 2.5L), Escape Hybrid (2009–2012 2.5L), Fusion (2006–2020 2.0/2.3/2.5L), Maverick (2022–2026 2.5L), Transit Connect (2014–2023 2.5L)
• Lincoln: Corsair (2020–2026 2.5L), MKZ (2007–2020 2.0/2.3/2.5L), Zephyr (2006 2.3L)
• Mercury: Mariner and Mariner Hybrid (2009–2012 2.5L), Milan (2006–2012 2.3/2.5L)

How do SP530X iridium plugs perform and how long do they last?

Iridium electrodes are chosen for their hardness and stable spark characteristics, which support consistent ignition over long service intervals. While real-world life depends on driving style and engine condition, these plugs are engineered to remain reliable across extended mileages compared with standard copper plugs.

• Iridium tip for extended wear resistance and steady sparking
• Typical service interval range: designed for long life (often quoted 60,000–100,000 miles under normal conditions)
• Stable ignition across varied throttle and temperature conditions

What are the key specifications and part references I should check?

Confirm the OEM part numbers and technical specs before ordering to ensure compatibility. The SP530X is listed under several reference numbers and replaces the earlier SP530/AYFS32YR parts. Correct gap and fuel system suitability are essential for safe operation.

• Part number: SP530X (OEM ref AYFS32YRX)
• Supersedes: SP530, AYFS32YR
• Electrode material: Iridium — Gap options: 0.044" or 0.050"
• Fuel system: Fuel injected (FI); service type: standard/alternative
• Sold quantity: 4 plugs per order (one full set for most 4‑cylinder engines)

Can I install these myself and what precautions should I take?

Many mechanically inclined owners can replace spark plugs with basic tools, but attention to torque, gap, and correct plug selection is critical. Use the manufacturer torque specs, check the gap before installation, and take care with coil packs or ignition wires to avoid damage. If unsure, have a professional technician perform the replacement.

• Verify plug gap matches vehicle specification before fitting
• Tighten to OEM torque to prevent thread damage or poor sealing
• Replace coils or boots if worn to ensure reliable ignition

Who is this for: This 4‑pack of OVERSTOCKDIRECT SP530X iridium spark plugs is aimed at owners and independent technicians who need a direct OEM replacement for compatible Ford, Lincoln, and Mercury 4‑cylinder engines. Choose this kit if you want factory‑specified iridium plugs that replace SP530 (AYFS32YR) and prefer to buy a complete set for a single tune‑up. If you are uncertain about fitment, verify your vehicle details or consult a service professional before ordering.