How to service the ignition coil-on-plug on Mercury Mariner?

The servicing of ignition coil-on-plug requires users to disconnect both the battery ground cable and ignition coil electrical connectors. The service procedure starts with unscrewing ignition bolts before extracting ignition coils from the vehicle. A small amount of dielectric grease needs to be applied to the ignition coil boots' interior before attaching them to the spark plugs while tightening the bolts to 10 Nm (89 lb-in). The installation process ends by performing the opposite steps of removal.

OEM Mercury Mariner Ignition Coil

Ignition Coil Resistor

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

4 Ignition Coils found

View related parts
Mercury Mariner Ignition Coil Part Number: 4M5Z-12029-B
$57.68 MSRP: $94.91
You Save: $37.23 (40%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Coil Assembly - Ignition; Direct Ignition Coil; Direct Ignition Coil Oe Quality; Coil On Plug Coil; Ignition Coil Set; Coil
- Replaces: 4M5Z-12029-BC, DG-507, 4M5Z-12029-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2008 Mercury Mariner | Base, Convenience, Hybrid | 4 Cyl 2.3 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.3 L GAS
View related parts
Mercury Mariner Ignition Coil Part Number: 2M2Z-12029-AC
$66.96 MSRP: $110.18
You Save: $43.22 (40%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Coil Assembly - Ignition; Direct Ignition Coil; Direct Ignition Coil Oe Quality; Coil On Plug Coil
- Replaces: 9L8Z-12029-A, DG-500, DG-539
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2008 Mercury Mariner | Base, Luxury, Premier | 6 Cyl 3.0 L GAS
View related parts
Mercury Mariner Ignition Coil Part Number: 9E5Z-12029-A
$66.52 MSRP: $109.45
You Save: $42.93 (40%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Coil Assembly - Ignition; Direct Ignition Coil; Direct Ignition Coil Oe Quality; Coil On Plug Coil; Coil
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2009-2011 Mercury Mariner | Base, Hybrid, Premier | 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.5 L GAS
View related parts
Mercury Mariner Ignition Coil Part Number: 6E5Z-12029-BA
$78.01 MSRP: $128.36
You Save: $50.35 (40%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Coil Assembly - Ignition; Direct Ignition Coil; Direct Ignition Coil Oe Quality; Coil On Plug Coil
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2009-2011 Mercury Mariner | Base, Premier | 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS

Mercury Mariner Ignition Coil

OEM Ignition Coil boasts unmatched quality. Each part goes through full quality checks. They adhere to Mercury's official factory standards. These steps remove flaws and inconsistencies. So you can get Ignition Coil with long life and a perfect fit. Come to our website and find genuine Mercury Mariner parts. We keep a wide inventory of OEM Mariner parts at the highly affordable prices. It's easy to search, compare, and pick what you need. You'll love the clear info and simple checkout. We offer top-rated customer service, and we reply fast. We also ship promptly to ensure your order arrives on time.

Ignition Coil is a very significant component in Mercury Mariner vehicles that tolerates the transforming of the low voltage from the battery, into the high voltage required to fire the air/fuel mixture in the cylinders. It has primary and secondary coils made of wire, wound on an iron core that is surrounded by plastic epoxy. Depending on which type of ignition system is part of the car's system, the coil may be connected to the distributor cap or directly wired to each spark plug. If the ignition coil is faulty, it results in no start, the engine will stutter, have low power, and poor fuel efficiency. Peculiarities of resistance/voltage patterns of the coil need constant checks and, therefore, proper maintenance.

Mercury Mariner Ignition Coil Parts and Q&A

Ignition Coil
4M5Z-12029-B
Q: How to service the ignition coil-on-plug on Mercury Mariner?
A:
The servicing of ignition coil-on-plug requires users to disconnect both the battery ground cable and ignition coil electrical connectors. The service procedure starts with unscrewing ignition bolts before extracting ignition coils from the vehicle. A small amount of dielectric grease needs to be applied to the ignition coil boots' interior before attaching them to the Spark Plugs while tightening the bolts to 10 Nm (89 lb-in). The installation process ends by performing the opposite steps of removal.