How to Service and Repair the PCV Valve on Mercury Mariner?

Service and repair operations on the Positive Crankcase Ventilation (PCV) valve begin by placing your vehicle in NEUTRAL position then hoisting it for work. Next, remove the intake manifold. The PCV valve cap should be gently released from its two tabs before pulling out the PCV valve itself. The installation process requires performing the reversal steps of removal.

OEM Mercury Mariner PCV Valve

Position Crank Ventilation Valve

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6 PCV Valves found

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Mercury Mariner PCV Valve
Part Number: 2L5Z-6A666-BA
$24.39 MSRP: $38.73
You Save: $14.34 (38%)
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Product Specifications
- Other Name: Kit - Crankcase Ventilation Valve; Crankcase Vent Valve
- Manufacturer Note: SOHC
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2007 Mercury Mariner | Luxury, Premier | 6 Cyl 3.0 L GAS
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Mercury Mariner PCV Valve
Part Number: 8S4Z-6A666-A
$39.73 MSRP: $63.09
You Save: $23.36 (38%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Valve Assembly; Crankcase Vent Valve
- 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 PCV Valve
Part Number: 4L5Z-6A666-BA
$17.29 MSRP: $27.45
You Save: $10.16 (38%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Valve Assembly; Crankcase Vent Valve
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2008 Mercury Mariner | Base, Hybrid | 4 Cyl 2.3 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.3 L GAS
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Mercury Mariner PCV Valve
Part Number: 3L8Z-6A666-AD
$102.56 MSRP: $172.18
You Save: $69.62 (41%)
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Product Specifications
- Other Name: Valve Assembly; Crankcase Vent Valve
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2007 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 PCV Valve
Part Number: 2C5Z-6A666-AA
$78.43 MSRP: $131.67
You Save: $53.24 (41%)
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Product Specifications
- Other Name: Valve Assembly; Crankcase Vent Valve
- Manufacturer Note: With Electric Heated PCV
- 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
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Mercury Mariner PCV Valve
Part Number: KR3Z-6A666-B
$13.63 MSRP: $21.09
You Save: $7.46 (36%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Valve Assembly; Crankcase Vent Valve
- Replaces: 4L5Z-6A666-AA, EV-267
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2008 Mercury Mariner | Base, Premier | 6 Cyl 3.0 L GAS

Mercury Mariner PCV Valve

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Mercury Mariner PCV Valve Parts Questions & Experts Answers

PCV Valve
2L5Z-6A666-BA
Q: How to Service and Repair the PCV Valve on Mercury Mariner?
A: Service and repair operations on the Positive Crankcase Ventilation (PCV) valve begin by placing your vehicle in NEUTRAL position then hoisting it for work. Next, remove the Intake Manifold. The PCV valve cap should be gently released from its two tabs before pulling out the PCV valve itself. The installation process requires performing the reversal steps of removal.