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

In order to service ignition coil-on-plug, disconnect battery ground and ignition coil connectors. Remove the bolts and coils. Installation of new coils Tighten bolts to 10 Nm (89 lb-in) and place dielectric grease within the boots prior to attaching to spark plugs. Installation is reversed to complete.

OEM Mercury Mariner Ignition Coil

Ignition Coil Resistor

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4 Ignition Coils found

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Mercury Mariner Ignition Coil Part Number: 4M5Z-12029-B
$57.68 MSRP: $94.91
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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
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Mercury Mariner Ignition Coil Part Number: 2M2Z-12029-AC
$68.51 MSRP: $112.73
You Save: $44.22 (40%)
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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
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Mercury Mariner Ignition Coil Part Number: 9E5Z-12029-A
$65.20 MSRP: $109.45
You Save: $44.25 (41%)
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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
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Mercury Mariner Ignition Coil Part Number: 6E5Z-12029-BA
$79.34 MSRP: $130.55
You Save: $51.21 (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

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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: In order to service ignition coil-on-plug, disconnect battery ground and ignition coil connectors. Remove the bolts and coils. Installation of new coils Tighten bolts to 10 Nm (89 lb-in) and place dielectric grease within the boots prior to attaching to Spark Plugs. Installation is reversed to complete.