What are the key steps to follow when replacing spark plugs on Mercury Grand Marquis?

Firstly, check the specifications before you replace the spark plugs to make sure that you are using the right ones, allow the engine to cool down before proceeding further, examine the new bulbs for flaws and adjust their gap appropriately, and lastly, take off the wire without breaking anything. In addition, blow out any dirt from the interested hole, pull it out with a socket without hurting any other thing around by mistake and gather some anti-seize compound, then put wire back. Now do this for all of the plugs.

Genuine Mercury Grand Marquis Spark Plug

Ignition Spark Plug

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11 Spark Plugs found

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Mercury Grand Marquis Spark Plug
Part Number: AGSF-22F-M1
$13.73
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Product Specifications
- Replaced by: AGSF-22F-M1X
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2011 Mercury Grand Marquis | 8 Cyl 4.6L Romeo SOHC EFI | 4-Speed Automatic Transmission 4R75E Livonia, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Mercury Grand Marquis Spark Plug
Part Number: ASF-52C
$13.73
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Product Specifications
- Replaced by: ASF-52C-X
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1980-1984 Mercury Grand Marquis | 8 Cyl 4.2L, 8 Cyl 5.0L, 8 Cyl 5.8L | 3AT, 3AT C4, 3AT C6, 4AT AOD
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Mercury Grand Marquis Spark Plug
Part Number: AWSF-44C
$3.17 MSRP: $4.63
You Save: $1.46 (32%)
Ships in 1 Business Day
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Product Specifications
- Replaced by: AWSF-44C-AX
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1985-1991 Mercury Grand Marquis | 8 Cyl 5.0L, 8 Cyl 5.8L | 4AT AOD
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Mercury Grand Marquis Spark Plug
Part Number: AGSF-32P-M
$5.95 MSRP: $9.49
You Save: $3.54 (38%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Replaced by: AGSF-32P-MX
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2008 Mercury Grand Marquis | 8 Cyl 4.6L Romeo SOHC EFI | 4-Speed Automatic Transmission 4R75E Livonia, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
- 1997-2005 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT 4R70W
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Mercury Grand Marquis Spark Plug
Part Number: ASF-42-C
$4.77 MSRP: $7.60
You Save: $2.83 (38%)
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Product Specifications
- Replaced by: ASF-42C-X
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1983-1989 Mercury Grand Marquis | 8 Cyl 5.0L, 8 Cyl 5.8L | 4AT AOD
- 1980-1981 Mercury Grand Marquis | 8 Cyl 4.2L, 8 Cyl 5.0L, 8 Cyl 5.8L | 3AT, 3AT C4, 3AT C6, 4AT AOD
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Mercury Grand Marquis Spark Plug
Part Number: AGSF-32N
$3.07 MSRP: $4.89
You Save: $1.82 (38%)
Ships in 1 Business Day
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Product Specifications
- Replaced by: AGSF-32N-X
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2009-2011 Mercury Grand Marquis | 8 Cyl 4.6L Romeo SOHC EFI | 4-Speed Automatic Transmission 4R75E Livonia, Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
- 1993-2005 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT, 4AT 4R70W, 4AT AODE
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Mercury Grand Marquis Spark Plug
Part Number: AGSF-32F-M
$5.97 MSRP: $9.53
You Save: $3.56 (38%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Replaced by: AGSF-32F-MX
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1996-1997 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT 4R70W
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Mercury Grand Marquis Spark Plug
Part Number: AGSF-32P-MF4
$5.95 MSRP: $9.49
You Save: $3.54 (38%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Manufacturer Note: Service plug may differ from original. This is a full threaded plug.
- Replaced by: AGSF-32P-MX
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2006 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT 4R70W
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Mercury Grand Marquis Spark Plug
Part Number: AGSF-32C
$4.27 MSRP: $6.64
You Save: $2.37 (36%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Replaced by: AGSF-32C-X
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1992 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT, 4AT AOD, 4AT AODE
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Mercury Grand Marquis Spark Plug
Part Number: AGSF-32W-MF4
$5.77 MSRP: $9.20
You Save: $3.43 (38%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Replaced by: AGSF-32W-MX
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2006 Mercury Grand Marquis | 8 Cyl 4.6L | 4AT 4R70W
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Mercury Grand Marquis Spark Plug
Part Number: AWSF-54C
$3.36 MSRP: $5.22
You Save: $1.86 (36%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1985-1986 Mercury Grand Marquis | 8 Cyl 5.0L, 8 Cyl 5.8L | 4AT AOD

Mercury Grand Marquis Spark Plug

Spark Plug of Mercury Grand Marquis car is important in the process of combustion of the coming air/fuel mixture through generation of sparks. This spark plug contains central electrode, metal terminal and a ceramic insulator held in a steel cap. Copper core, platinum, iridium, and double platinum Spark Plugs are used depending on ignition system and the use it will be put into. The ignition coil provides the high voltage for the spark and this is important in so as to cause combustion and in turn operation of the engine. Spark plugs also have standardized thread size, types of seats, heat range, and reach to serve the intended function and last as long as possible. Merely the sparks plugs must be replaced or serviced in routine to avoid cases such as misfires, rough idle or poor acceleration challenges in the Mercury Grand Marquis.

We provide a wide range of Mercury Grand Marquis Spark Plug at the best prices possible. If you need Mercury Grand Marquis Spark Plug, you can shop with confidence on our website. All our OEM parts come with a manufacturer's warranty and are delivered to your door step with a fast delivery service.

Mercury Grand Marquis Spark Plug Parts Questions & Experts Answers

Spark Plug
AGSF-32F-M
Q: What are the key steps to follow when replacing spark plugs on Mercury Grand Marquis?
A: Firstly, check the specifications before you replace the spark plugs to make sure that you are using the right ones, allow the engine to cool down before proceeding further, examine the new bulbs for flaws and adjust their gap appropriately, and lastly, take off the wire without breaking anything. In addition, blow out any dirt from the interested hole, pull it out with a socket without hurting any other thing around by mistake and gather some anti-seize compound, then put wire back. Now do this for all of the plugs.