How to service and repair the Valve Stem Seal on Ford Mustang?

The valve guide seal service starts by removing both spark plugs and camshaft roller followers as the first step. Place the piston inside the serviced cylinder at Top Dead Center position. You must sustain the valve before clearance while air pressure remains inside the cylinder because the valve might drop into the cylinder when the pressure finishes. Start by using a suitable tool to provide air pressure on the cylinder followed by the use of Valve Spring Compressor for valve spring retainer key removal and subsequent removal of valve spring retainers and valve springs before removing the valve stem seals. You must oil new valve stem seals with clean engine oil before putting them in position using the Valve Stem Oil Seal Installer. After lubricating the valve springs and retainers and their keys with clean engine oil you should use the Valve Spring Compressor to put in all parts. The installation procedure includes placing the spark plugs together with the camshaft roller followers.

How to Remove and Replace the Valve Stem Seal, Spring, and Retainer on Ford Mustang?

The valve spring along with retainer and also the valve stem seal can be removed by first extracting the spark plugs and camshaft roller followers. Set the piston within the serviced cylinder to Top Dead Center position. A valve support must be put in place to stop the valve from entering the cylinder upon air pressure loss since the piston reached the bottom of the cylinder. Begin by using appropriate equipment to apply air pressure on the cylinder followed by installation of the Valve Spring Compressor tool to take off valve spring retainer keys and valve spring retainers and valve springs. The last step is valve stem seal removal. Before valve stem seal installation, you should apply clean engine oil for lubrication before using Valve Stem Oil Seal Installer to perform the operation. Clean engine oil will be used to lubricate valve springs along with retainers and retainer keys before installation through the Valve Spring Compressor. Reinstallation of camshaft roller followers as well as the spark plugs should finish the installation process.

OEM Ford Mustang Valve Stem Seal

Engine Valve Seal

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15 Valve Stem Seals found

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Ford Mustang Valve Seals Part Number: DC2Z-6571-A
$2.27 MSRP: $3.22
You Save: $0.95 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal - Valve Stem; Valve Stem Seal
- Replaces: F6AZ-6571-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1996-2004 Ford Mustang | GT, GT Bullitt | 8 Cyl 4.6 L GAS
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Ford Mustang Valve Seals, Brown/Gray Part Number: 1S7Z-6571-A
$13.78
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Product Specifications
- Other Name: Seal - Valve Stem; Valve Stem Seal
- Replaces: 1S7Z-6571-EA, 1S7Z-6571-BA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2023 Ford Mustang | EcoBoost, EcoBoost Premium | 4 Cyl 2.3 L GAS
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Ford Mustang Valve Seals Part Number: GR3Z-6571-A
$6.53 MSRP: $9.26
You Save: $2.73 (30%)
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Product Specifications
- Other Name: Seal - Valve Stem; Valve Stem Seal
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2020 Ford Mustang | Shelby GT350, Shelby GT350R | 8 Cyl 5.2 L GAS
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Ford Mustang Valve Seals Part Number: F77Z-6571-AB
$3.40 MSRP: $4.81
You Save: $1.41 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal - Valve Stem; Engine Valve Stem Oil Seal Set; Valve Stem Oil Seal Set; Valve Stem Seal
- Manufacturer Note: SOHC
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2010 Ford Mustang | Base | 6 Cyl 4.0 L GAS
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Ford Mustang Valve Seals Part Number: F5LY-6571-A
$2.48 MSRP: $3.51
You Save: $1.03 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal - Valve Stem; Engine Valve Stem Oil Seal Set; Valve Stem Oil Seal Set; Valve Stem Seal
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2014, 2003-2004, 2001, 1996-1999 Ford Mustang | Mach 1, Shelby GT500, Shelby GT500KR, SVT Cobra, SVT Cobra 10th Anniversary | 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L GAS, 8 Cyl 5.8 L GAS
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Ford Mustang Valve Seals Part Number: BL3Z-6571-A
$2.69 MSRP: $3.82
You Save: $1.13 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal - Valve Stem; Valve Stem Seal
- Manufacturer Note: 4 Per Package
- Replaces: 7T4Z-6571-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011-2017 Ford Mustang | Base, V6 | 6 Cyl 3.7 L GAS
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Ford Mustang Valve Seals, Green Part Number: 3S4Z-6571-A
$5.52 MSRP: $7.83
You Save: $2.31 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal - Valve Stem; Valve Stem Seal
- Replaces: 3S4Z-6571-AA, 1S7Z-6571-FA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2023 Ford Mustang | EcoBoost, EcoBoost Premium | 4 Cyl 2.3 L GAS
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Ford Mustang Valve Seals Part Number: 3L3Z-6571-DA
$5.19 MSRP: $7.37
You Save: $2.18 (30%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Seal - Valve Stem; Engine Valve Stem Oil Seal Set; Valve Stem Oil Seal Set; Valve Stem Seal
- Manufacturer Note: SEAL, VALVE STEM
- Replaces: 3L3Z-6571-CA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2010 Ford Mustang | Bullitt, GT, Shelby GT | 8 Cyl 4.6 L GAS
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Ford Mustang Valve Seals Part Number: 1F2Z-6571-AA
$2.97 MSRP: $4.22
You Save: $1.25 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal - Valve Stem; Engine Valve Stem Oil Seal Set; Valve Stem Oil Seal Set; Valve Stem Seal
- Manufacturer Note: Intake & Exhaust
- Replaces: XF2Z-6571-BA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1999-2004 Ford Mustang | Base | 6 Cyl 3.8 L GAS, 6 Cyl 3.9 L GAS
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Ford Mustang Valve Seals Part Number: BR3Z-6571-B
$1.80 MSRP: $2.54
You Save: $0.74 (30%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Seal - Valve Stem; Engine Valve Stem Oil Seal Set; Valve Stem Oil Seal Set; Valve Stem Seal
- Manufacturer Note: 8 Per Package
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011-2017 Ford Mustang | Boss 302, GT, GT 50 Years Limited Edition, GT Premium | 8 Cyl 5.0 L GAS
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Ford Mustang Seal - Valve Stem Part Number: E5ZZ-6571-A
$13.78 MSRP: $18.75
You Save: $4.97 (27%)
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Product Specifications
- Replaced by: F2TZ-6571-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1984-1986 Ford Mustang | GT, GT-350 20th Anniversary, L, LX, SVO | 4 Cyl 2.3 L GAS
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Ford Mustang Valve Seals Part Number: E8AZ-6571-A
$13.78 MSRP: $18.75
You Save: $4.97 (27%)
ADD TO CART
Product Specifications
- Other Name: Seal - Valve Stem; Engine Valve Stem Oil Seal Set; Valve Stem Oil Seal Set; Valve Stem Seal; Intake Valve Seals; Intake Valve Stem Seal
- Replaces: E43Z-6571-A, FOTZ-6049-K, F1HZ-6049-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1984-1991 Ford Mustang | GT, GT-350 20th Anniversary, L, LX, SVO | 4 Cyl 2.3 L GAS, 8 Cyl 5.0 L GAS
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Ford Mustang Valve Seals Part Number: JR3Z-6571-A
$4.72 MSRP: $6.69
You Save: $1.97 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Seal - Valve Stem; Valve Stem Seal
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2018-2023 Ford Mustang | Bullitt, GT, GT Premium, Mach 1, Shelby GT500 | 8 Cyl 5.0 L GAS, 8 Cyl 5.2 L GAS
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Ford Mustang Valve Seals Part Number: F3ZZ-6571-C
$2.04 MSRP: $2.89
You Save: $0.85 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal - Valve Stem; Valve Stem Seal; Exhaust Valve Seals; Intake Valve Seals; Intake Valve Stem Seal
- Manufacturer Note: Used on Intake & Exhaust valves
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1993-1995 Ford Mustang | GT, GTS, LX, SVT Cobra, SVT Cobra R | 8 Cyl 5.0 L GAS
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Ford Mustang Valve Seals Part Number: F57Z-6571-A
$1.62 MSRP: $2.29
You Save: $0.67 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Seal - Valve Stem; Engine Valve Stem Oil Seal Set; Valve Stem Oil Seal Set; Valve Stem Seal; Exhaust Valve Seals; Intake Valve Seals
- Manufacturer Note: Intake & Exhaust
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1996-1998 Ford Mustang | Base | 6 Cyl 3.8 L GAS

Ford Mustang Valve Stem Seal

OEM Valve Stem Seal boasts unmatched quality. Each part goes through full quality checks. They adhere to Ford's official factory standards. These steps remove flaws and inconsistencies. So you can get Valve Stem Seal with long life and a perfect fit. Come to our website and find genuine Ford Mustang parts. We keep a wide inventory of OEM Mustang 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.

Ford Mustang Valve Stem Seal Parts and Q&A

Valve Seals
3L3Z-6571-DA
Q: How to service and repair the Valve Stem Seal on Ford Mustang?
A:
The valve guide seal service starts by removing both Spark Plugs and camshaft roller followers as the first step. Place the Piston inside the serviced cylinder at Top Dead Center position. You must sustain the valve before clearance while air pressure remains inside the cylinder because the valve might drop into the cylinder when the pressure finishes. Start by using a suitable tool to provide air pressure on the cylinder followed by the use of Valve Spring Compressor for valve spring retainer key removal and subsequent removal of valve spring retainers and valve springs before removing the valve stem seals. You must oil new valve stem seals with clean engine oil before putting them in position using the Valve Stem Oil Seal Installer. After lubricating the valve springs and retainers and their keys with clean engine oil you should use the Valve Spring Compressor to put in all parts. The installation procedure includes placing the spark plugs together with the camshaft roller followers.
Valve Seals
F5LY-6571-A
Q: How to Remove and Replace the Valve Stem Seal, Spring, and Retainer on Ford Mustang?
A:
The valve spring along with retainer and also the valve stem seal can be removed by first extracting the Spark Plugs and camshaft roller followers. Set the Piston within the serviced cylinder to Top Dead Center position. A valve support must be put in place to stop the valve from entering the cylinder upon air pressure loss since the piston reached the bottom of the cylinder. Begin by using appropriate equipment to apply air pressure on the cylinder followed by installation of the Valve Spring Compressor tool to take off valve spring retainer keys and valve spring retainers and valve springs. The last step is valve stem seal removal. Before valve stem seal installation, you should apply clean engine oil for lubrication before using Valve Stem Oil Seal Installer to perform the operation. Clean engine oil will be used to lubricate valve springs along with retainers and retainer keys before installation through the Valve Spring Compressor. Reinstallation of camshaft roller followers as well as the spark plugs should finish the installation process.