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

In order to service valve stem seals, be careful not to cause engine failure by being dirty. Disassemble the valve springs and wipe the old seals, lubricate new seals with clean engine oil and install. Repeat the reverse steps of removal and make sure that during the servicing process, all assembly parts are restored and that the engine operates correctly.

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

In order to fix the valve guide seal, loosen the spark plugs and camshaft roller followers with the piston at the Top Dead Center. Use Valve Spring Compressor to snap valve parts into and out of the engine using air pressure. Oil new seals and install all parts including spark plugs.

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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%)
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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%)
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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%)
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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%)
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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%)
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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%)
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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%)
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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
- 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 and Q&A

Valve Seals
1F2Z-6571-AA
Q: How Can One Service and Repair Valve Stem Seals to Prevent Engine Failure on Ford F-150?
A: In order to service valve stem seals, be careful not to cause engine failure by being dirty. Disassemble the valve springs and wipe the old seals, lubricate new seals with clean engine oil and install. Repeat the reverse steps of removal and make sure that during the servicing process, all assembly parts are restored and that the engine operates correctly.
Valve Seals
3L3Z-6571-DA
Q: How to service and repair the Valve Stem Seal on Ford Mustang?
A: In order to fix the valve guide seal, loosen the spark plugs and camshaft roller followers with the piston at the Top Dead Center. Use Valve Spring Compressor to snap valve parts into and out of the engine using air pressure. Oil new seals and install all parts including spark plugs.