How to Service the PCV Valve on Mercury Grand Marquis?

The service process for Positive Crankcase Ventilation (PCV) valve begins with tube disconnect from quick connect coupling and electrical connector removal from the valve unit. The process of PCV valve removal requires a new replacement valve because shearing the plastic retaining ears during extraction will cause permanent damage. The removal process will be reversed to set the new PCV valve after removing the old valve through rotation.

OEM Mercury Grand Marquis PCV Valve

Position Crank Ventilation Valve

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6 PCV Valves found

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Mercury Grand Marquis PCV Valve Part Number: 7L3Z-6A666-A
$21.49 MSRP: $34.13
You Save: $12.64 (38%)
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Product Specifications
- Other Name: Valve Assembly; Crankcase Vent Valve
- Manufacturer Note: Valve Only
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2010 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis PCV Valve Part Number: 2X4Z-6A666-AA
$8.64 MSRP: $13.73
You Save: $5.09 (38%)
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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:
- 2003-2004 Mercury Grand Marquis | GS, LS, LSE | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis PCV Valve Part Number: 2L3Z-6A666-AA
$17.87 MSRP: $28.38
You Save: $10.51 (38%)
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Product Specifications
- Other Name: Valve Assembly; Crankcase Vent Valve
- Replaces: 2L3Z-6A666-BA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2006 Mercury Grand Marquis | GS, GSL, Limited Edition, LS, LSE, Ultimate Edition | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis PCV Valve Part Number: 6W7Z-6A666-AA
$66.39 MSRP: $109.24
You Save: $42.85 (40%)
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:
- 2007-2010 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis PCV Valve Part Number: 5L3Z-6A666-BA
$80.37 MSRP: $132.24
You Save: $51.87 (40%)
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:
- 2006 Mercury Grand Marquis | GS, LS | 8 Cyl 4.6 L GAS
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Mercury Grand Marquis PCV Valve Part Number: D9ZZ-6A666-A
Product Specifications
- Other Name: Valve Assembly; Crankcase Vent Valve
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1984-2002 Mercury Grand Marquis | Base, Colony Park, GS, LS | 8 Cyl 4.6 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.8 L GAS

Mercury Grand Marquis PCV Valve

OEM PCV Valve 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 PCV Valve with long life and a perfect fit. Come to our website and find genuine Mercury Grand Marquis parts. We keep a wide inventory of OEM Grand Marquis 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.

The PCV Valve (Positive Crankcase Ventilation) in Mercury Grand Marquis helps in increasing the efficiency of the engine and at the same time minimizing the emissions that are dangerous for the environment. It recycles partially burnt gases from the crankcase into the combustion chamber where they burn fully, it also checks the formation of oil sludge. The valve is under the intake manifold vacuum and during idle, restricts the gas flow; it opens during high revs to properly manage blow-by gases. Unlike the crankcase breather the PCV valve is normally mounted in an opposite point, though the design of the valve remains the same. It is advised to perform the routine check and avoid some of the problems that may include contaminated engine oil and high fuel consumption that may cause expenses on repairs. On balance, operating of PCV Valve is very crucial when it comes to performance of Mercury Grand Marquis and environmental quality.

Mercury Grand Marquis PCV Valve Parts and Q&A

PCV Valve
6W7Z-6A666-AA
Q: How to Service the PCV Valve on Mercury Grand Marquis?
A:
The service process for Positive Crankcase Ventilation (PCV) valve begins with tube disconnect from quick connect coupling and electrical connector removal from the valve unit. The process of PCV valve removal requires a new replacement valve because shearing the plastic retaining ears during extraction will cause permanent damage. The removal process will be reversed to set the new PCV valve after removing the old valve through rotation.