8PCS Motorcraft DG511 Ignition Coils Spark Plugs SP546 For F150 F-250 5.4L 6.8L For Sale

8pcs Motorcraft DG511 ignition coils and 8pcs SP546 spark plugs for select Ford, Lincoln, and Mercury 4.6L V8, 5.4L V8, and 6.8L V10 engines. Fits Ford F-150, Expedition, Explorer, F-250, F-350, F-450, F-550, Mustang, Lincoln Mark LT, Navigator, and Mercury Mountaineer. Please verify DG511 / UF537 coil number, SP546 spark plug number, 2-pin connector, engine size, and fitment before purchase. 30-day hassle-free returns with prepaid return label through . 8 Coils + 8 Spark Plugs Motorcraft DG511 Ignition Coils & SP546 Spark Plugs

Check These Before You Buy

Your old ignition coil should match DG511 / UF537 style.
• Your spark plug application should match SP546 / PZH14F.
• Coil connector: 2-pin female connector, blade-style terminal.
• Confirm engine size: 4.6L V8, 5.4L V8, or 6.8L V10.
• If unsure, send us your VIN or the number printed on your old part before ordering.

What You Will Receive Ignition Coils 8pcs DG511 / UF537 ignition coils Spark Plugs 8pcs SP546 / PZH14F spark plugs Total 16 pieces total: 8 coils + 8 plugs Condition Brand new, never used or installed When This Kit Is Usually Needed

This kit is mainly for Ford modular engines using DG511 / UF537 coil-on-plug ignition coils and SP546 spark plugs. It is commonly used when old coils or plugs cause ignition-related problems.

• Cylinder misfire codes such as P0300, P0301, P0302, P0303, etc.
• Rough idle, engine shaking, or hesitation when accelerating.
• Weak power under load, especially uphill or during towing.
• Hard start or unstable running after the engine warms up.
• Old spark plugs due for replacement during regular ignition service.

Coil Specifications Connector Gender Female, 2 pins Terminal Gender Male Terminal Type Blade Voltage 12V Coil Construction Epoxy internal construction Part Numbers To Match Ignition Coil

Spark Plug

Vehicle Fitment

Fitment depends on year, engine, and original part number. Please do not order by model name only.

Ford Expedition 5.4L V8 2005-2008 Ford Explorer 4.6L V8 2006-2008 Ford Explorer Sport Trac 4.6L V8 2007-2008 Ford F-150 5.4L V8 2004-2008 Ford F-250 Super Duty 5.4L V8 2005-2008 Ford F-250 Super Duty 6.8L V10 2005-2008 Ford F-350 Super Duty 5.4L V8 2005-2008 Ford F-350 Super Duty 6.8L V10 2005-2008 Ford F-450 Super Duty 6.8L V10 2005-2007 Ford F-550 Super Duty 6.8L V10 1999-2008 Ford Mustang 4.6L V8 2005-2008 Lincoln Mark LT 5.4L V8 2006-2008 Lincoln Navigator 5.4L V8 2005-2008 Mercury Mountaineer 4.6L V8 2006-2008 Installation Notes That Matter

Start each spark plug by hand first. Do not use a tool to force the first threads.
• If the spark plug does not turn smoothly, stop and recheck alignment to avoid cylinder head thread damage.
• Tighten spark plugs to the factory torque specification for your vehicle.
• Push each coil down firmly until the boot is fully seated on the spark plug.
• Make sure the coil connector clicks into place and is not loose or oil-contaminated.
• After installation, clear old trouble codes and test drive the vehicle before checking again.

If You Still Have a Misfire

A misfire is not always caused only by the coil or spark plug. If the same code returns after installation, check these items before assuming the new part is bad:

Swap the coil to another cylinder and see whether the misfire follows the coil.
• Inspect the coil connector and wiring harness for broken locks, corrosion, or loose pins.
• Check for oil or water inside the spark plug well.
• Check the fuel injector if the misfire stays on the same cylinder.
• Check compression if the cylinder continues to misfire after ignition parts are replaced.
• Check for vacuum leaks, intake leaks, or old stored codes that were not cleared.

30-Day Hassle-Free Returns

Condition

Need Help Checking Fitment?