How Can One Service and Repair Valve Stem Seals to Prevent Engine Failure on Ford F-150?

The successful repair of valve stem seals requires cleanliness during engine maintenance since foreign items including cleaning gasket surface debris can trigger engine failure. The first step requires removing valve springs before taking out valve seals. Engine oil that is clean should be used to lubricate new valve seals before their installation. You should perform all reverse steps from removal as the final part of the procedure.

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.

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Engine Valve Seal

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51 Valve Stem Seals found

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Ford Valve Seals
Part Number: 1F2Z-6571-AA
$2.97 MSRP: $4.22
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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
Fits the following Ford Models:
- E-150 | 2003 | Base | 6 Cyl 4.2 L GAS
- E-150 Econoline | 1999-2002 | Base, XL | 6 Cyl 4.2 L GAS
- E-250 | 2003 | Base | 6 Cyl 4.2 L GAS
- E-250 Econoline | 1999-2002 | Base, XL | 6 Cyl 4.2 L GAS
- F-150 | 2005-2008, 1999-2003 | Base, STX, XL, XLT | 6 Cyl 4.2 L GAS
- F-150 Heritage | 2004 | XL, XLT | 6 Cyl 4.2 L GAS
- Freestar | 2004-2007 | Base, Limited, S, SE, SEL, SES | 6 Cyl 3.9 L GAS, 6 Cyl 4.2 L GAS
- Mustang | 1999-2004 | Base | 6 Cyl 3.8 L GAS, 6 Cyl 3.9 L GAS
- Ranger | 1999-2001 | XL, XLT | 4 Cyl 2.5 L GAS
- Windstar | 1999-2003 | Base, Limited, LX, SE, SE Sport, SEL | 6 Cyl 3.8 L GAS
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Ford Valve Seals
Part Number: 5C1Z-6571-A
$19.78 MSRP: $28.05
You Save: $8.27 (30%)
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Product Specifications
- Other Name: Seal - Valve Stem; Valve Stem Seal
Fits the following Ford Models:
- Transit-150 | 2015-2019 | Base, XL, XLT | 5 Cyl 3.2 L DIESEL
- Transit-250 | 2015-2019 | Base, PTV | 5 Cyl 3.2 L DIESEL
- Transit-350 | 2015-2019 | Base, XL, XLT | 5 Cyl 3.2 L DIESEL
- Transit-350 HD | 2015-2019 | Base, XL, XLT | 5 Cyl 3.2 L DIESEL
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Ford 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
Fits the following Ford Models:
- Mustang | 2015-2020 | Shelby GT350, Shelby GT350R | 8 Cyl 5.2 L GAS
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Ford Valve Seals
Part Number: DC2Z-6571-A
$2.27 MSRP: $3.22
You Save: $0.95 (30%)
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Product Specifications
- Other Name: Seal - Valve Stem; Valve Stem Seal
- Replaces: F6AZ-6571-AA
Fits the following Ford Models:
- Crown Victoria | 1994-2006 | Base, Fleet, LWB, LX, LX Sport, Police Interceptor, S, Special Edition | 8 Cyl 4.6 L CNG, 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS
- E-150 | 2003-2014 | Base, Chateau, XL, XLT | 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L CNG, 8 Cyl 5.4 L FLEX, 8 Cyl 5.4 L GAS, 8 Cyl 5.4 L LPG
- E-150 Econoline | 1997-2002 | Base, XL | 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L BI-FUEL, 8 Cyl 5.4 L GAS
- E-150 Econoline Club Wagon | 1997-2002 | Chateau, Custom, XL, XLT | 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L BI-FUEL, 8 Cyl 5.4 L GAS
- E-250 | 2003-2014 | Base | 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L CNG, 8 Cyl 5.4 L FLEX, 8 Cyl 5.4 L GAS, 8 Cyl 5.4 L LPG
- E-250 Econoline | 2002, 1997-1999 | Base | 8 Cyl 5.4 L BI-FUEL, 8 Cyl 5.4 L CNG, 8 Cyl 5.4 L GAS
- E-350 Econoline | 1997-1998 | Base, XL | 10 Cyl 6.8 L GAS, 8 Cyl 5.4 L BI-FUEL, 8 Cyl 5.4 L CNG, 8 Cyl 5.4 L GAS
- E-350 Econoline Club Wagon | 1997-2002 | Chateau, Custom, XL, XL HD, XLT, XLT HD | 10 Cyl 6.8 L GAS, 8 Cyl 5.4 L BI-FUEL, 8 Cyl 5.4 L CNG, 8 Cyl 5.4 L GAS
- E-350 Super Duty | 1999-2019 | Base, Chateau, XL, XLT | 10 Cyl 6.8 L CNG, 10 Cyl 6.8 L GAS, 10 Cyl 6.8 L LPG, 8 Cyl 5.4 L BI-FUEL, 8 Cyl 5.4 L CNG, 8 Cyl 5.4 L FLEX, 8 Cyl 5.4 L GAS, 8 Cyl 5.4 L LPG
- Excursion | 2000-2005 | Eddie Bauer, Limited, XLS, XLT | 10 Cyl 6.8 L GAS, 8 Cyl 5.4 L GAS
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Ford Valve Seals
Part Number: BC3Z-6571-A
$3.33 MSRP: $4.72
You Save: $1.39 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal - Valve Stem; Valve Stem Seal
Fits the following Ford Models:
- F-250 Super Duty | 2011-2023 | King Ranch, Lariat, Limited, Platinum, XL, XLT | 8 Cyl 6.7 L DIESEL
- F-350 Super Duty | 2011-2023 | King Ranch, Lariat, Limited, Platinum, XL, XLT | 8 Cyl 6.7 L DIESEL
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Ford Valve Seals
Part Number: F5LY-6571-A
$2.48 MSRP: $3.51
You Save: $1.03 (30%)
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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
Fits the following Ford Models:
- Crown Victoria | 2003-2004 | Base, LWB, LX, LX Sport, Police Interceptor, S | 8 Cyl 4.6 L CNG, 8 Cyl 4.6 L GAS
- Mustang | 2007-2014, 2003-2004, 2001, 1996-1999 | 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 Valve Seals
Part Number: F4TZ-6571-A
$6.17 MSRP: $8.08
You Save: $1.91 (24%)
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
Fits the following Ford Models:
- E-350 Econoline | 1995-1998 | Base, XL | 8 Cyl 7.3 L DIESEL
- E-350 Econoline Club Wagon | 1995-2002 | Chateau, Chateau HD, Custom, XL, XL HD, XLT, XLT HD | 8 Cyl 7.3 L DIESEL
- E-350 Super Duty | 1999-2003 | Base, XL | 8 Cyl 7.3 L DIESEL
- Excursion | 2000-2003 | Eddie Bauer, Limited, XLT | 8 Cyl 7.3 L DIESEL
- F-250 | 1994-1996 | Eddie Bauer, Special, XL, XLT | 8 Cyl 7.3 L DIESEL
- F-250 HD | 1997 | XL, XLT | 8 Cyl 7.3 L DIESEL
- F-250 Super Duty | 1999-2003 | Lariat, XL, XLT | 8 Cyl 7.3 L DIESEL
- F-350 | 1994-1997 | Base, Eddie Bauer, Special, XL, XLT | 8 Cyl 7.3 L DIESEL
- F-350 Super Duty | 1999-2003 | King Ranch, Lariat, XL, XLT | 8 Cyl 7.3 L DIESEL
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Ford Valve Seals
Part Number: 3C3Z-6571-AA
$11.88 MSRP: $15.55
You Save: $3.67 (24%)
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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 ASM VALVE
Fits the following Ford Models:
- E-350 Super Duty | 2004-2010 | Base, Chateau, XL, XLT | 8 Cyl 6.0 L DIESEL
- Excursion | 2003-2005 | Eddie Bauer, Limited, XLS, XLT | 8 Cyl 6.0 L DIESEL
- F-250 Super Duty | 2003-2010 | Cabela's, FX4, Harley-Davidson Edition, King Ranch, Lariat, XL, XLT | 8 Cyl 6.0 L DIESEL, 8 Cyl 6.4 L DIESEL
- F-350 Super Duty | 2003-2010 | Cabela's, FX4, Harley-Davidson Edition, King Ranch, Lariat, XL, XLT | 8 Cyl 6.0 L DIESEL, 8 Cyl 6.4 L DIESEL
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Ford Valve Seals
Part Number: F57Z-6571-A
$1.62 MSRP: $2.29
You Save: $0.67 (30%)
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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; Exhaust Valve Seals; Intake Valve Seals
- Manufacturer Note: Intake & Exhaust
Fits the following Ford Models:
- E-150 Econoline | 1997-1998 | Base, XL | 6 Cyl 4.2 L GAS
- E-250 Econoline | 1997-1998 | Base, XL | 6 Cyl 4.2 L GAS
- F-150 | 1997-1998 | Base, XL, XLT | 6 Cyl 4.2 L GAS
- Mustang | 1996-1998 | Base | 6 Cyl 3.8 L GAS
- Ranger | 1993-1998 | Splash, Sport, STX, XL, XL Sport, XLT | 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS
- Thunderbird | 1996-1997 | LX | 6 Cyl 3.8 L GAS
- Windstar | 1996-1998 | Base, GL, Limited, LX | 6 Cyl 3.8 L GAS
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Ford 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
Fits the following Ford Models:
- Bronco | 1993-1996 | Custom, Eddie Bauer, XL, XLT, XLT Lariat, XLT Sport | 8 Cyl 5.0 L GAS
- E-150 Econoline | 1993-1996 | Base, XL | 8 Cyl 5.0 L GAS
- E-150 Econoline Club Wagon | 1993-1996 | Chateau, Custom, XLT | 8 Cyl 5.0 L GAS
- Explorer | 1996-2001 | Eddie Bauer, Limited, XLS, XLT | 8 Cyl 5.0 L GAS
- F-150 | 1993-1996 | Eddie Bauer, Special, XL, XLT | 8 Cyl 5.0 L GAS
- F-250 | 1993-1996 | Eddie Bauer, Special, XL, XLT | 8 Cyl 5.0 L GAS
- Mustang | 1993-1995 | GT, GTS, LX, SVT Cobra, SVT Cobra R | 8 Cyl 5.0 L GAS
- Thunderbird | 1993 | LX | 8 Cyl 5.0 L GAS
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Ford Valve Seals
Part Number: AL3Z-6571-AA
$2.29 MSRP: $3.25
You Save: $0.96 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal - Valve Stem; Valve Stem Seal
- Replaces: AL3Z-6571-A
Fits the following Ford Models:
- F-150 | 2011-2014 | FX2, FX4, Harley-Davidson Edition, Lariat, Lariat Limited, Platinum, SVT Raptor, XLT | 8 Cyl 6.2 L GAS
- F-250 Super Duty | 2011-2016 | King Ranch, Lariat, Platinum, XL, XLT | 8 Cyl 6.2 L FLEX
- F-350 Super Duty | 2011-2016 | King Ranch, Lariat, Platinum, XL, XLT | 8 Cyl 6.2 L FLEX
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Ford Valve Seals
Part Number: BE8Z-6571-A
$11.70 MSRP: $16.59
You Save: $4.89 (30%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Seal - Valve Stem; Valve Stem Seal
- Manufacturer Note: Inlet
Fits the following Ford Models:
- Fiesta | 2011-2019 | S, SE, SEL, SES, ST Line, Titanium | 4 Cyl 1.6 L GAS
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Ford Valve Seals
Part Number: HX7Z-6571-B
$9.40 MSRP: $13.33
You Save: $3.93 (30%)
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Product Specifications
- Other Name: Seal - Valve Stem; Valve Stem Seal
Fits the following Ford Models:
- Bronco Sport | 2021-2023 | Base, Big Bend, Heritage Edition, Outer Banks | 3 Cyl 1.5 L GAS
- Escape | 2020-2022 | S, SE, SEL | 3 Cyl 1.5 L GAS
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Ford Valve Seals
Part Number: BE8Z-6571-C
$11.68 MSRP: $16.57
You Save: $4.89 (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: Exhaust
Fits the following Ford Models:
- Fiesta | 2011-2019 | S, SE, SEL, SES, ST Line, Titanium | 4 Cyl 1.6 L GAS
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Ford Valve Seals
Part Number: P2GZ-6571-A
$4.74 MSRP: $6.71
You Save: $1.97 (30%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Seal - Valve Stem
Fits the following Ford Models:
- Escape | 2023 | Active, Base, Platinum, ST-Line, ST-Line Elite, ST-Line Select | 3 Cyl 1.5 L GAS, 4 Cyl 2.0 L GAS
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Ford Valve Seals
Part Number: LC3Z-6571-A
$2.59 MSRP: $3.67
You Save: $1.08 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal - Valve Stem; Valve Stem Seal
Fits the following Ford Models:
- E-350 Super Duty | 2021-2023 | Base | 8 Cyl 7.3 L GAS
- F-250 Super Duty | 2020-2023 | King Ranch, Lariat, Platinum, XL, XLT | 8 Cyl 6.8 L GAS, 8 Cyl 7.3 L GAS
- F-350 Super Duty | 2020-2023 | King Ranch, Lariat, Platinum, XL, XLT | 8 Cyl 6.8 L GAS, 8 Cyl 7.3 L GAS
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Ford Valve Seals
Part Number: YS4Z-6571-CA
$4.04 MSRP: $5.74
You Save: $1.70 (30%)
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
- Replaces: F8CZ-6571-AA, F6RZ-6571-CA
Fits the following Ford Models:
- Contour | 1995-2000 | Base, GL, GL Sport, LX, LX Sport, SE, Sport | 4 Cyl 2.0 L BI-FUEL, 4 Cyl 2.0 L GAS
- Escape | 2001-2004 | Limited, XLS, XLT | 4 Cyl 2.0 L GAS
- Escort | 1998-2003 | ZX2, ZX2 Cool Coupe, ZX2 Hot Coupe, ZX2 S/R | 4 Cyl 2.0 L GAS
- Focus | 2000-2004 | SE, Sony Limited Edition, SVT, ZTS, ZTW, ZX3, ZX5 | 4 Cyl 2.0 L GAS
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Ford Valve Seals
Part Number: F3ZZ-6571-A
$2.04 MSRP: $2.90
You Save: $0.86 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal - Valve Stem; Valve Stem Seal
Fits the following Ford Models:
- Ranger | 1993-1994 | Splash, Sport, STX, XL, XLT | 4 Cyl 2.3 L GAS
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Ford Valve Seals
Part Number: 4S7Z-6571-A
$3.91 MSRP: $5.56
You Save: $1.65 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal - Valve Stem; Valve Stem Seal
Fits the following Ford Models:
- F-150 | 2018-2021 | King Ranch, Lariat, Platinum, XL, XLT | 6 Cyl 3.0 L DIESEL
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Ford Valve Seals
Part Number: F6DZ6571BA
Product Specifications
- Other Name: Seal - Valve Stem; Valve Stem Seal
Fits the following Ford Models:
- Taurus | 1996-1999 | SHO | 8 Cyl 3.4 L GAS

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Ford Valve Stem Seal Parts Questions & Experts Answers

Valve Seals
1F2Z-6571-AA
Q: How Can One Service and Repair Valve Stem Seals to Prevent Engine Failure on Ford F-150?
A: The successful repair of valve stem seals requires cleanliness during engine maintenance since foreign items including cleaning gasket surface debris can trigger engine failure. The first step requires removing valve springs before taking out valve seals. Engine oil that is clean should be used to lubricate new valve seals before their installation. You should perform all reverse steps from removal as the final part of the procedure.
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.