NPAUTO Ignition Coil Pack 4-Pack for Ford Mazda Mercury 2.0–2.5L — D505 OE-Style Fit, Restores Smooth Idle

NPAUTO D505 is a four-pack ignition coil replacement engineered to restore consistent spark delivery for compatible Ford, Mazda, Mercury and Lincoln 4‑cylinder engines.

If your vehicle shows intermittent misfires, rough idle or reduced throttle response, worn or failed ignition coils are a common cause. The NPAUTO D505 set includes four coils that match OE mounting and electrical interfaces for a wide range of L4 2.0L–2.5L engines from model years listed below, letting you replace all cylinders at once for balanced performance and smoother operation.

Which cars and engines does this coil pack fit?

These coils are designed for transverse 4‑cylinder Ford, Mazda, Mercury and Lincoln models with 2.0L, 2.3L or 2.5L engines across multiple years. Always cross‑check the compatibility chart and your vehicle’s part numbers before ordering.

• Ford: Focus (2003–2011), Escape (2005–2019), Fusion (2010–2020), Ranger (2013–2020), Transit Connect (2010–2013), C‑Max (2013–2018), EcoSport (2009–2012)
• Mazda: Mazda3 (2004–2005), Tribute (2005–2006, 2008)
• Mercury: Mariner (2005–2008), Milan (2010–2011)
• Lincoln: MKZ (2013–2020; some 2011–2012 2.5L applications)

How do these coils improve driveability after installation?

Replacing degraded coils with a matched four‑pack helps restore uniform spark timing and cylinder combustion, reducing misfires and restoring smoother idle. You should notice steadier acceleration and potentially improved fuel efficiency when the ignition system is functioning correctly.

• Replaces all four coils to eliminate cylinder imbalance
• Designed to fit OE-style coil sockets and connectors for straightforward installation
• Helps resolve symptoms like hesitation under load and rough idling

Are these coils compatible with OE part numbers or aftermarket equivalents?

NPAUTO D505 corresponds to several common interchange numbers used across OE and aftermarket catalogs. If your vehicle’s existing coil lists one of these references, D505 is likely a direct replacement, but visually confirm connector type and mounting orientation.

• Cross references include FD505, DG501, DG504, DG541 and DG507
• Also matches UF621, 4M5G12A366BC, ZZCA18100 and other listed equivalents
• Check the vehicle-specific compatibility chart and compare the old coil before purchase

What’s included and what should I check before buying?

This listing contains four ignition coils so you can replace every cylinder coil at once. Before ordering, verify engine displacement, model year range, and connector style against your vehicle to ensure fitment and avoid returns.

• Package includes: 4 ignition coils (complete set)
• Confirm engine size (2.0L, 2.3L, 2.5L) and model year compatibility
• Compare part numbers and electrical connector shape to your original coils

Who is this for: The NPAUTO D505 four‑pack is for owners and mechanics seeking an affordable, like‑for‑like replacement for worn ignition coils on compatible Ford, Mazda, Mercury and Lincoln four‑cylinder cars and light trucks. It suits DIY installers and service shops that want to replace all coils together to prevent cylinder imbalance, reduce diagnostic time and restore smoother engine performance. If in doubt, use the vehicle compatibility chart or consult a technician to confirm fitment before purchase.