How to Service and Repair the PCV Valve on Buick Regal?

The positive crankcase ventilation (PCV) valve replacement starts with removing the fuel injector sight shield after disconnecting the MAP Sensor electrical connector and removing the MAP Sensor. A 16 mm (5/8 inch) socket should be used to push down the access cover then rotate it one quarter turn in the counterclockwise direction before removing it. Before proceeding with the replacement remove the PCV Valve along with its o-ring from the Intake Manifold. Begin by positioning both the PCV Valve along with the new o-ring before installing the access cover . The installation process involves first reinstalling the MAP Sensor before reinstalling its electrical connector and ending the operation by putting on the fuel injector sight shield.

OEM Buick Regal PCV Valve

Position Crank Ventilation Valve

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13 PCV Valves found

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Buick Regal PCV Valve Part Number: 12608378
$31.84 MSRP: $59.80
You Save: $27.96 (47%)
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Product Specifications
- Other Name: Valve, Evaporator Emission Canister Purge Solenoid; Purge Valve; Purge Solenoid; Purge Control Valve
- Replaced by: 12735400
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2011-2013 Buick Regal | CXL, GS, Premium | 4 Cyl 2.0 L FLEX
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Buick Regal PCV Valve Part Number: 6487936
$1.20 MSRP: $8.38
You Save: $7.18 (86%)
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Product Specifications
- Other Name: Valve, Crankcase Ventilation System; Valve, Engine Crankcase; Valve, Crankcase
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984-1985 Buick Regal | Base, Grand National, Limited, T-Type | 6 Cyl 3.8 L GAS
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Buick Regal PCV Valve Part Number: 12663027
$28.82 MSRP: $54.12
You Save: $25.30 (47%)
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Product Specifications
- Other Name: Valve, PCV; Valve, Engine Crankcase
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017 Buick Regal | Base, GS, Premium, Sport Touring | 4 Cyl 2.0 L GAS
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Buick Regal PCV Valve Part Number: 12655399
$19.99 MSRP: $37.54
You Save: $17.55 (47%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Valve, Engine Crankcase
- Replaces: 12637663
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2016 Buick Regal | Base, GS, Premium, Sport Touring | 4 Cyl 2.0 L GAS
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Buick Regal PCV Valve Part Number: 12637666
$20.25 MSRP: $38.02
You Save: $17.77 (47%)
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Product Specifications
- Other Name: Valve, Engine Crankcase
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2016 Buick Regal | Base, GS, Premium, Sport Touring | 4 Cyl 2.0 L GAS
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Buick Regal Breather Element Part Number: 6484966
$3.64 MSRP: $6.50
You Save: $2.86 (44%)
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Product Specifications
- Other Name: Breather Assembly-Air Cleaner & Silencer; Crankcase Breather; Breather; Breather, Carburetor Air Cleaner; Breather, Air Cleaner Intake
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984-1985 Buick Regal | Base, Grand National, Limited, T-Type | 6 Cyl 3.8 L GAS, 6 Cyl 4.1 L GAS, 6 Cyl 4.3 L DIESEL, 8 Cyl 5.7 L DIESEL
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Buick Regal PCV Valve Part Number: 12665166
$15.23 MSRP: $28.60
You Save: $13.37 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Valve, Engine Crankcase
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017 Buick Regal | Base, GS, Premium, Sport Touring | 4 Cyl 2.0 L GAS
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Buick Regal PCV Valve Part Number: 6487534
Product Specifications
- Other Name: Valve, Crankcase Vent; Valve, Crankcase Ventilation System; Valve, Engine Crankcase
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984-1987 Buick Regal | Base, Limited | 6 Cyl 3.8 L GAS, 6 Cyl 4.1 L GAS
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Buick Regal PCV Valve Part Number: 25095468
Product Specifications
- Other Name: Valve, PCV; Valve, Engine Crankcase
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984-1985 Buick Regal | Grand National, T-Type | 6 Cyl 3.8 L GAS
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Buick Regal PCV Valve Part Number: 25043843
Product Specifications
- Other Name: Valve, PCV; Crankcase Vent Valve; Crankcase; Valve, Engine Crankcase
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1988-2004 Buick Regal | 25th Anniversary Edition, Custom, Gran Sport, GS, GSE, Limited, LS, LSE, Olympic Gold Edition | 6 Cyl 2.8 L GAS, 6 Cyl 3.1 L GAS, 6 Cyl 3.8 L GAS
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Buick Regal PCV Valve Part Number: 12589440
Product Specifications
- Other Name: Valve, Engine Crankcase
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2011-2012 Buick Regal | CXL, GS, Premium | 4 Cyl 2.0 L FLEX
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Buick Regal PCV Valve Part Number: 8997683
Product Specifications
- Other Name: Valve, PCV; Valve, Engine Crankcase
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1986-1987 Buick Regal | Base, Limited | 8 Cyl 5.0 L GAS
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Buick Regal Breather Element Part Number: 8996724
Product Specifications
- Other Name: Breather E; Breather, Air Cleaner Intake
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1986-1987 Buick Regal | Base, GNX, Grand National, Limited, T-Type | 6 Cyl 3.8 L GAS, 8 Cyl 5.0 L GAS

Buick Regal PCV Valve

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Engine control and emissions in Buick Regal vehicles are made possible by a PCV Valve that also boosts the performance of the automobile. Since the PCV Valve channels gases from the crankcase back to the combustion chambers where they are burnt, it helps in preventing environmental pollution and, formation of oil sludge. Being a function of intake manifold vacuum conditions, the PCV Valve shuts down the gas flow at idle position and opens at the time when loads are being imposed on the crankcase without interference with the engine operations. Also, the PCV Valve performs the function of a flame arrester and may help to increase the power of the engine through compression. Maintenance and inspections are suggested from time to time in order to prevent cases of having to spend a lot of cash just to repair the car and to make sure that the car is performing as it is expected to.

Buick Regal PCV Valve Parts Questions & Experts Answers

PCV Valve
25043843
Q: How to Service and Repair the PCV Valve on Buick Regal?
A:
The positive crankcase ventilation (PCV) valve replacement starts with removing the fuel injector sight shield after disconnecting the MAP Sensor electrical connector and removing the MAP Sensor. A 16 mm (5/8 inch) socket should be used to push down the access cover then rotate it one quarter turn in the counterclockwise direction before removing it. Before proceeding with the replacement remove the PCV Valve along with its o-ring from the Intake Manifold. Begin by positioning both the PCV Valve along with the new o-ring before installing the access cover . The installation process involves first reinstalling the MAP Sensor before reinstalling its electrical connector and ending the operation by putting on the fuel injector sight shield.