Yukon Gear 9in 31 Spline Pinion Seal — Fits 1957-1976 Ford, Mercury, Lincoln

SKU: YUKYMS9363S
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Yukon Gear & Axle

Yukon Gear & Axle is the off-road and truck differential expert — gear sets, lockers, axle shafts, and complete axle assemblies for Dana 30, Dana 44, Dana 60, and modern AAM axles. The trusted source for rock-crawler and overland gear changes.

Watch in action

Yukon Gear Mighty Seal for Classic Ford Drivetrains

Ensure optimal performance and prevent costly leaks with the Yukon Gear Mighty Seal, specifically designed for 9-inch differentials with 31-spline axles. This high-quality seal is engineered to provide a precise fit for a wide range of classic Ford, Mercury, and Lincoln vehicles, including popular models like the Mustang, Fairlane, Ranchero, Torino, and Cougar. Utilizing advanced manufacturing techniques, Yukon Gear ensures that this seal offers superior protection against contamination and fluid loss.

Superior Sealing for Your Vehicle:

  • Exact Fitment: Engineered for 9-inch Ford rear ends with 31-spline axles, ensuring compatibility with numerous classic applications.
  • Durable Materials: Constructed from robust materials designed to withstand the rigors of daily driving and performance use.
  • Leak Prevention: Effectively seals the pinion shaft, preventing essential gear oil from escaping and keeping damaging dirt and moisture out.
  • Wide Vehicle Coverage: Fits a broad spectrum of Ford, Mercury, and Lincoln models from the late 1950s through the mid-1970s.
  • Reliable Performance: Part of Yukon's Mighty Seal line, known for its durability and consistent sealing capabilities.

This pinion seal is a critical component for maintaining the health and longevity of your vehicle's differential. Whether you're restoring a classic or performing routine maintenance, choosing a reliable seal is paramount. The Yukon Gear Mighty Seal offers peace of mind, knowing your differential is protected by a component built to last.

Find the perfect fit for your classic ride at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1957-1961 Ford Fairlane Base
1957-1962 Ford Fairlane 500
1963-1965 Ford Fairlane Base
1966-1967 Ford Fairlane 500XL
1966-1970 Ford Fairlane 500
1967-1969 Ford Fairlane Base
1972-1975 Ford Gran Torino Sport
1972-1976 Ford Gran Torino Base
1972-1976 Ford Gran Torino Squire
1973-1976 Ford Gran Torino Brougham
1974-1975 Ford Gran Torino Elite
1970-1977 Ford Maverick Base
1975-1977 Ford Maverick Grabber
1964-1973 Ford Mustang Base
1968 Ford Mustang Shelby GT-500KR
1968-1970 Ford Mustang Shelby GT-350
1968-1970 Ford Mustang Shelby GT-500
1969-1970 Ford Mustang Boss 429
1969-1971 Ford Mustang Boss 302
1970-1973 Ford Mustang Grande
1970-1973 Ford Mustang Mach 1
1971-1972 Ford Mustang Boss 351
1979-1981 Ford Mustang Ghia
1979-1981 Ford Mustang Base
1981 Ford Mustang Cobra
1982-1983 Ford Mustang GLX
1983 Ford Mustang GL
1983 Ford Mustang Turbo GT
1983-1984 Ford Mustang L
1983-2011 Ford Mustang GT
1984 Ford Mustang GT-350 20th Anniversary
1984-1986 Ford Mustang SVO
1984-1993 Ford Mustang LX
1993 Ford Mustang SVT Cobra R
1993-1999 Ford Mustang SVT Cobra
1994-2011 Ford Mustang Base
1995 Ford Mustang GTS
1995 Ford Mustang SVT Cobra R
2000 Ford Mustang SVT Cobra R
2001 Ford Mustang GT Bullitt
2001 Ford Mustang SVT Cobra
2003 Ford Mustang SVT Cobra 10th Anniversary
2003-2004 Ford Mustang Mach 1
2003-2004 Ford Mustang SVT Cobra
2007-2008 Ford Mustang Shelby GT
2007-2011 Ford Mustang Shelby GT500
2008-2009 Ford Mustang Bullitt
2008-2009 Ford Mustang Shelby GT500KR
1974 Ford Mustang II 2+2
1974-1978 Ford Mustang II Base
1974-1978 Ford Mustang II Ghia
1974-1978 Ford Mustang II Mach 1
1957-1958 Ford Ranchero Custom
1957-1971 Ford Ranchero Base
1967 Ford Ranchero 500 XL
1967-1979 Ford Ranchero 500
1968-1979 Ford Ranchero GT
1970-1979 Ford Ranchero Squire
1968-1969 Ford Torino GT
1968-1976 Ford Torino Base

…and 34 additional fitments. Contact us to confirm yours.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Yukon Gear & Axle

Yukon Gear & Axle is the off-road and truck differential expert — gear sets, lockers, axle shafts, and complete axle assemblies for Dana 30, Dana 44, Dana 60, and modern AAM axles. The trusted source for rock-crawler and overland gear changes.

Watch in action

Yukon Gear Mighty Seal for Classic Ford Drivetrains

Ensure optimal performance and prevent costly leaks with the Yukon Gear Mighty Seal, specifically designed for 9-inch differentials with 31-spline axles. This high-quality seal is engineered to provide a precise fit for a wide range of classic Ford, Mercury, and Lincoln vehicles, including popular models like the Mustang, Fairlane, Ranchero, Torino, and Cougar. Utilizing advanced manufacturing techniques, Yukon Gear ensures that this seal offers superior protection against contamination and fluid loss.

Superior Sealing for Your Vehicle:

  • Exact Fitment: Engineered for 9-inch Ford rear ends with 31-spline axles, ensuring compatibility with numerous classic applications.
  • Durable Materials: Constructed from robust materials designed to withstand the rigors of daily driving and performance use.
  • Leak Prevention: Effectively seals the pinion shaft, preventing essential gear oil from escaping and keeping damaging dirt and moisture out.
  • Wide Vehicle Coverage: Fits a broad spectrum of Ford, Mercury, and Lincoln models from the late 1950s through the mid-1970s.
  • Reliable Performance: Part of Yukon's Mighty Seal line, known for its durability and consistent sealing capabilities.

This pinion seal is a critical component for maintaining the health and longevity of your vehicle's differential. Whether you're restoring a classic or performing routine maintenance, choosing a reliable seal is paramount. The Yukon Gear Mighty Seal offers peace of mind, knowing your differential is protected by a component built to last.

Find the perfect fit for your classic ride at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1957-1961 Ford Fairlane Base
1957-1962 Ford Fairlane 500
1963-1965 Ford Fairlane Base
1966-1967 Ford Fairlane 500XL
1966-1970 Ford Fairlane 500
1967-1969 Ford Fairlane Base
1972-1975 Ford Gran Torino Sport
1972-1976 Ford Gran Torino Base
1972-1976 Ford Gran Torino Squire
1973-1976 Ford Gran Torino Brougham
1974-1975 Ford Gran Torino Elite
1970-1977 Ford Maverick Base
1975-1977 Ford Maverick Grabber
1964-1973 Ford Mustang Base
1968 Ford Mustang Shelby GT-500KR
1968-1970 Ford Mustang Shelby GT-350
1968-1970 Ford Mustang Shelby GT-500
1969-1970 Ford Mustang Boss 429
1969-1971 Ford Mustang Boss 302
1970-1973 Ford Mustang Grande
1970-1973 Ford Mustang Mach 1
1971-1972 Ford Mustang Boss 351
1979-1981 Ford Mustang Ghia
1979-1981 Ford Mustang Base
1981 Ford Mustang Cobra
1982-1983 Ford Mustang GLX
1983 Ford Mustang GL
1983 Ford Mustang Turbo GT
1983-1984 Ford Mustang L
1983-2011 Ford Mustang GT
1984 Ford Mustang GT-350 20th Anniversary
1984-1986 Ford Mustang SVO
1984-1993 Ford Mustang LX
1993 Ford Mustang SVT Cobra R
1993-1999 Ford Mustang SVT Cobra
1994-2011 Ford Mustang Base
1995 Ford Mustang GTS
1995 Ford Mustang SVT Cobra R
2000 Ford Mustang SVT Cobra R
2001 Ford Mustang GT Bullitt
2001 Ford Mustang SVT Cobra
2003 Ford Mustang SVT Cobra 10th Anniversary
2003-2004 Ford Mustang Mach 1
2003-2004 Ford Mustang SVT Cobra
2007-2008 Ford Mustang Shelby GT
2007-2011 Ford Mustang Shelby GT500
2008-2009 Ford Mustang Bullitt
2008-2009 Ford Mustang Shelby GT500KR
1974 Ford Mustang II 2+2
1974-1978 Ford Mustang II Base
1974-1978 Ford Mustang II Ghia
1974-1978 Ford Mustang II Mach 1
1957-1958 Ford Ranchero Custom
1957-1971 Ford Ranchero Base
1967 Ford Ranchero 500 XL
1967-1979 Ford Ranchero 500
1968-1979 Ford Ranchero GT
1970-1979 Ford Ranchero Squire
1968-1969 Ford Torino GT
1968-1976 Ford Torino Base

…and 34 additional fitments. Contact us to confirm yours.

Product Details

Product Description

About Yukon Gear & Axle

Yukon Gear & Axle is the off-road and truck differential expert — gear sets, lockers, axle shafts, and complete axle assemblies for Dana 30, Dana 44, Dana 60, and modern AAM axles. The trusted source for rock-crawler and overland gear changes.

Watch in action

Yukon Gear Mighty Seal for Classic Ford Drivetrains

Ensure optimal performance and prevent costly leaks with the Yukon Gear Mighty Seal, specifically designed for 9-inch differentials with 31-spline axles. This high-quality seal is engineered to provide a precise fit for a wide range of classic Ford, Mercury, and Lincoln vehicles, including popular models like the Mustang, Fairlane, Ranchero, Torino, and Cougar. Utilizing advanced manufacturing techniques, Yukon Gear ensures that this seal offers superior protection against contamination and fluid loss.

Superior Sealing for Your Vehicle:

  • Exact Fitment: Engineered for 9-inch Ford rear ends with 31-spline axles, ensuring compatibility with numerous classic applications.
  • Durable Materials: Constructed from robust materials designed to withstand the rigors of daily driving and performance use.
  • Leak Prevention: Effectively seals the pinion shaft, preventing essential gear oil from escaping and keeping damaging dirt and moisture out.
  • Wide Vehicle Coverage: Fits a broad spectrum of Ford, Mercury, and Lincoln models from the late 1950s through the mid-1970s.
  • Reliable Performance: Part of Yukon's Mighty Seal line, known for its durability and consistent sealing capabilities.

This pinion seal is a critical component for maintaining the health and longevity of your vehicle's differential. Whether you're restoring a classic or performing routine maintenance, choosing a reliable seal is paramount. The Yukon Gear Mighty Seal offers peace of mind, knowing your differential is protected by a component built to last.

Find the perfect fit for your classic ride at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1957-1961 Ford Fairlane Base
1957-1962 Ford Fairlane 500
1963-1965 Ford Fairlane Base
1966-1967 Ford Fairlane 500XL
1966-1970 Ford Fairlane 500
1967-1969 Ford Fairlane Base
1972-1975 Ford Gran Torino Sport
1972-1976 Ford Gran Torino Base
1972-1976 Ford Gran Torino Squire
1973-1976 Ford Gran Torino Brougham
1974-1975 Ford Gran Torino Elite
1970-1977 Ford Maverick Base
1975-1977 Ford Maverick Grabber
1964-1973 Ford Mustang Base
1968 Ford Mustang Shelby GT-500KR
1968-1970 Ford Mustang Shelby GT-350
1968-1970 Ford Mustang Shelby GT-500
1969-1970 Ford Mustang Boss 429
1969-1971 Ford Mustang Boss 302
1970-1973 Ford Mustang Grande
1970-1973 Ford Mustang Mach 1
1971-1972 Ford Mustang Boss 351
1979-1981 Ford Mustang Ghia
1979-1981 Ford Mustang Base
1981 Ford Mustang Cobra
1982-1983 Ford Mustang GLX
1983 Ford Mustang GL
1983 Ford Mustang Turbo GT
1983-1984 Ford Mustang L
1983-2011 Ford Mustang GT
1984 Ford Mustang GT-350 20th Anniversary
1984-1986 Ford Mustang SVO
1984-1993 Ford Mustang LX
1993 Ford Mustang SVT Cobra R
1993-1999 Ford Mustang SVT Cobra
1994-2011 Ford Mustang Base
1995 Ford Mustang GTS
1995 Ford Mustang SVT Cobra R
2000 Ford Mustang SVT Cobra R
2001 Ford Mustang GT Bullitt
2001 Ford Mustang SVT Cobra
2003 Ford Mustang SVT Cobra 10th Anniversary
2003-2004 Ford Mustang Mach 1
2003-2004 Ford Mustang SVT Cobra
2007-2008 Ford Mustang Shelby GT
2007-2011 Ford Mustang Shelby GT500
2008-2009 Ford Mustang Bullitt
2008-2009 Ford Mustang Shelby GT500KR
1974 Ford Mustang II 2+2
1974-1978 Ford Mustang II Base
1974-1978 Ford Mustang II Ghia
1974-1978 Ford Mustang II Mach 1
1957-1958 Ford Ranchero Custom
1957-1971 Ford Ranchero Base
1967 Ford Ranchero 500 XL
1967-1979 Ford Ranchero 500
1968-1979 Ford Ranchero GT
1970-1979 Ford Ranchero Squire
1968-1969 Ford Torino GT
1968-1976 Ford Torino Base

…and 34 additional fitments. Contact us to confirm yours.

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