1999 Mercury Mountaineer Transfer Cases

Keep Your 1999 Mercury Mountaineer in Top Shape with Quality Transfer Cases

Whether you’re repairing or upgrading your Transfer Case, using high-quality parts is key to keeping your 1999 Mercury Mountaineer looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Transfer Case Adapter Gaskets, Input Shaft Seals, and Transfer Case Output Shaft Seals. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Transfer Cases from Trusted Brands

Looking for a reliable Transfer Case? We’ve got you covered with options from brands you know and trust like National. For example, National Transfer Cases start at just $36.49 with an average 4.3 star rating. With over 10 reviews and a solid 2 star average, you can shop with confidence knowing other Mercury Mountaineer owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1999 Mercury Mountaineer Transfer Case at Advance Auto Parts is around $29.08, with a range that starts at $4.99 and goes up to $114.99. With 17 options in stock from 6 trusted brands, finding the right fit is easy. Popular picks like Transfer Case Gasket, Taper Bearing Cone, and Oil Seal start at just $4.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Transfer Case, don’t forget to check out other key components like 4WD Components and Universal Joints. At Advance Auto Parts, we’re here to help you keep your 1999 Mercury Mountaineer in peak condition, inside and out.

Essential 1999 Mercury Mountaineer Transfer Cases

Felpro – Transfer Case Adapter Gasket (Part No.55484)

Transfer Case Adapter Gasket

from

$26.99
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific, providing unsurpassed quality for a seal you can trust
  • Validated for fit, form, and function
  • Engineered for the sealing repair environment
  • Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
See More

FAG US – Repair Sleeve (Part No.SR3501)

Repair Sleeve

from

$62.99
The FAG repair sleeve is a precision element that provides additional sealing for damaged shafts. Made of heat-treated stainless steel, the FAG repair sleeve signifcantly increases the life of the shaft and prevents premature wear. Since no shaft removal or machining is required during the repair, the repair sleeve is a cost effective repair solution to protect damaged surfaces.

Product Features:
  • High-precision and High-quality components used in all KITs
  • Coverage of classic and new high-tech solutions for the best system coverage
See More

National – Multi-Purpose Bearing (Part No.208)

Multi-Purpose Bearing

from

$38.99
Product Features:
  • BUILT TO LAST: Advanced heat treatment process for strength
  • PREMIUM MATERIALS: Precision manufactured using premium-grade steel for lasting performance and extended bearing life
  • RELIABLE PERFORMANCE: Element size and quantity are engineered to meet or exceed the load rating of OE bearings
  • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
See More

National – Multi-Purpose Bearing (Part No.N-106-1)

Multi-Purpose Bearing

from

$28.99
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • BUILT TO LAST — Advanced heat treatment process for strength
  • PREMIUM MATERIALS — Precision manufactured using premium-grade steel for lasting performance and extended bearing life
  • RELIABLE PERFORMANCE — Element size and quantity are engineered to meet or exceed the load rating of OE bearings
  • COMPREHENSIVE COVERAGE — Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING — Comprehensive testing throughout design and development processes by National engineers for quality you can count on
See More

National – Shaft Repair Sleeve (Part No.99187)

Shaft Repair Sleeve

from

$36.49
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Designed to repair damaged, grooved or worn shafts
  • Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
  • Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
  • Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
  • Easy to install with removable flange and installation tool
See More

National – Multi-Purpose Bearing (Part No.207)

Multi-Purpose Bearing

from

$32.99
Product Features:
  • BUILT TO LAST: Advanced heat treatment process for strength
  • PREMIUM MATERIALS: Precision manufactured using premium-grade steel for lasting performance and extended bearing life
  • RELIABLE PERFORMANCE: Element size and quantity are engineered to meet or exceed the load rating of OE bearings
  • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
See More

Driveworks – Taper Bearing Cone (Part No.S-M-88048)

Taper Bearing Cone

from

$11.29
Value-priced bearing meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
See More

FAG US – Bearing Cone (Part No.KLM11949)

Bearing Cone

from

$10.49
With advanced load-carrying capacity and compact design, tapered roller bearings are used in wheel bearings, transmissions, differentials, transfer cases and other miscellanous applications. FAG manufacturers over 100 million tapered roller bearings annually.

Product Features:
  • High-precision and High-quality components used in all KITs
  • Coverage of classic and new high-tech solutions for the best system coverage
See More

Dorman – Transfer Case Gasket (Part No.917-522)

Transfer Case Gasket

from

$11.99
Transfer case gasket warped and cracked? This replacement gasket restores a tight seal to prevent fluid leaks on certain vehicle years, makes and models.

Product Features:
  • Direct replacement – this transfer case gasket matches the fit and performance of the original gasket on specific vehicle applications
  • Effective fix – restores a tight seal in the transfer case after original gasket fails
  • Durable construction – built for reliable longevity, free of defects in materials and workmanship
  • Trustworthy quality – backed by team of designers and engineers in the United States
See More

Dorman – Transfer Case Gasket (Part No.926-476)

Transfer Case Gasket

from

$18.99
Transfer case gasket warped and cracked? This replacement gasket restores a tight seal to prevent fluid leaks on certain vehicle years, makes and models.

Product Features:


    Product Features:
    • Direct replacement – this transfer case gasket matches the fit and performance of the original gasket on specific vehicle applications
    • Effective fix – restores a tight seal in the transfer case after original gasket fails
    • Durable construction – built for reliable longevity, free of defects in materials and workmanship
    • Trustworthy quality – backed by team of designers and engineers in the United States
See More

National – Multi-Purpose Bearing (Part No.SCH-1310)

Multi-Purpose Bearing

from

$17.29
Product Features:
  • RIGHT TYPE: Needle bearings are application-specific for the repair occasion, using either caged or full complement designs
  • PREMIUM MATERIALS: Precision manufactured using high-quality materials for outstanding durability and performance
  • OE-STYLE DESIGN: Engineered to meet OE specifications
  • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
See More

Driveworks – Transfer Case Input Shaft Seal (Part No.S-710403)

Transfer Case Input Shaft Seal

from

$7.49
Product Features:
  • Brand may vary by location
See More

National – Shaft Repair Sleeve (Part No.99189)

Shaft Repair Sleeve

from

$38.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Designed to repair damaged, grooved or worn shafts
  • Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
  • Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
  • Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
  • Easy to install with removable flange and installation tool
See More

National – Multi-Purpose Seal (Part No.710403)

Multi-Purpose Seal

from

$10.79
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Design type: spring loaded; multi-lip
  • Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
  • Good low temperature capability
  • Low swell in hydrocarbon fluids
  • Delivers quality and reliable performance for every type of repair
See More

Yukon Gear – 8.8" Sport Utility IRS Side Stub Axle Seal, Fits Left Hand Or Right Hand (Part No.30257)

8.8" Sport Utility IRS Side Stub Axle Seal, Fits Left Hand Or Right Hand

from

$42.99
8.8″ FORD SPORT UTILITY IRS & 31 spline 8.8″ IFS side stub axle seal, fits left hand or Right hand.Yukon Mighty seal.

Product Features:
  • Rear stub axle seal
  • Fits Ford 8.8″ IRS in SUV applications
See More

Driveworks – Oil Seal (Part No.S-3946)

Oil Seal

from

$4.99
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
See More

Most Popular Transfer Case Adapter Gasket for 1999 Mercury Mountaineers

Enhance your 1999 Mercury Mountaineer with this popular Transfer Case Adapter Gasket we have in stock, for $26.99.

Felpro – Transfer Case Adapter Gasket (Part No.55484)

Transfer Case Adapter Gasket

from

$26.99
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific, providing unsurpassed quality for a seal you can trust
  • Validated for fit, form, and function
  • Engineered for the sealing repair environment
  • Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
See More

Best-Selling 1999 Mercury Mountaineer Input Shaft Seals

Upgrade your Mountaineer with one of our 3 best-selling Input Shaft Seals.

National – Shaft Repair Sleeve (Part No.99189)

Shaft Repair Sleeve

from

$38.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Designed to repair damaged, grooved or worn shafts
  • Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
  • Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
  • Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
  • Easy to install with removable flange and installation tool
See More

Driveworks – Transfer Case Input Shaft Seal (Part No.S-710403)

Transfer Case Input Shaft Seal

from

$7.49
Product Features:
  • Brand may vary by location
See More

USA Standard Gear – TCaseInputShaftSeal (Part No.75651)

TCaseInputShaftSeal

from

$5.99
TCaseInputShaftSeal

Top-Quality Transfer Case Output Shaft Seals for 1999 Mercury Mountaineers

Choose a high-quality OEM or aftermarket Transfer Case Output Shaft Seal for Mercury Mountaineers and enjoy top-notch performance from $4.99.

National – Multi-Purpose Seal (Part No.710403)

Multi-Purpose Seal

from

$10.79
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Design type: spring loaded; multi-lip
  • Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
  • Good low temperature capability
  • Low swell in hydrocarbon fluids
  • Delivers quality and reliable performance for every type of repair
See More

Driveworks – Oil Seal (Part No.S-3946)

Oil Seal

from

$4.99
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
See More

Top Picks for 1999 Mercury Mountaineer Transfer Case Gaskets

Invest in one of our 2 durable Transfer Case Gaskets for your 1999 Mercury, knowing you’re getting trusted brands and expert craftsmanship.

Dorman – Transfer Case Gasket (Part No.917-522)

Transfer Case Gasket

from

$11.99
Transfer case gasket warped and cracked? This replacement gasket restores a tight seal to prevent fluid leaks on certain vehicle years, makes and models.

Product Features:
  • Direct replacement – this transfer case gasket matches the fit and performance of the original gasket on specific vehicle applications
  • Effective fix – restores a tight seal in the transfer case after original gasket fails
  • Durable construction – built for reliable longevity, free of defects in materials and workmanship
  • Trustworthy quality – backed by team of designers and engineers in the United States
See More

Dorman – Transfer Case Gasket (Part No.926-476)

Transfer Case Gasket

from

$18.99
Transfer case gasket warped and cracked? This replacement gasket restores a tight seal to prevent fluid leaks on certain vehicle years, makes and models.

Product Features:


Product Features:
  • Direct replacement – this transfer case gasket matches the fit and performance of the original gasket on specific vehicle applications
  • Effective fix – restores a tight seal in the transfer case after original gasket fails
  • Durable construction – built for reliable longevity, free of defects in materials and workmanship
  • Trustworthy quality – backed by team of designers and engineers in the United States
See More

Top-Rated Input Shaft Bearings for 1999 Mercury Mountaineers

Make a smart move for your 1999 Mercury Mountaineer with products all priced from $10.49 to $32.99.

National – Multi-Purpose Bearing (Part No.207)

Multi-Purpose Bearing

from

$32.99
Product Features:
  • BUILT TO LAST: Advanced heat treatment process for strength
  • PREMIUM MATERIALS: Precision manufactured using premium-grade steel for lasting performance and extended bearing life
  • RELIABLE PERFORMANCE: Element size and quantity are engineered to meet or exceed the load rating of OE bearings
  • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
See More

Driveworks – Taper Bearing Cone (Part No.S-M-88048)

Taper Bearing Cone

from

$11.29
Value-priced bearing meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
See More

FAG US – Bearing Cone (Part No.KLM11949)

Bearing Cone

from

$10.49
With advanced load-carrying capacity and compact design, tapered roller bearings are used in wheel bearings, transmissions, differentials, transfer cases and other miscellanous applications. FAG manufacturers over 100 million tapered roller bearings annually.

Product Features:
  • High-precision and High-quality components used in all KITs
  • Coverage of classic and new high-tech solutions for the best system coverage
See More

Top-Rated Transfer Case Brands For Your 1999 Mercury Mountaineer

When it comes to finding the perfect Transfer Case for your 1999 Mercury Mountaineer, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 6 trusted brands. We carry the most popular Transfer Case brands including National, and more, all known for their exceptional customer ratings (average brand rating of 4.3 stars) and competitive prices, as low as $36.49. Purchasing a Transfer Case from us here at Advance Auto Parts is a smart move for both you and your 1999 Mercury Mountaineer, providing peace of mind with parts that meet or exceed OEM standards.

Popular National 1999 Mercury Mountaineer Transfer Cases

If you’re looking for a top-quality Transfer Case for your 1999 Mercury Mountaineer, Advance Auto Parts has exactly what you need with our selection of National Transfer Cases. We have 1 National Transfer Cases in stock for this fitment, all known for their durability and precision fit. With prices starting at just $36.49, you’ll find the perfect Transfer Case for your needs and budget. National Transfer Cases for the 1999 Mercury Mountaineer come highly rated, with over 1 customer reviews and an impressive average rating of 4.3 stars. Choosing a National Transfer Case from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Shaft Repair Sleeve
from $36.49
(1)
Shaft Repair Sleeve
“Fixed my Ford F-150 4.2. Fit well and installation tool seated the sleeve exactly where it needed to be. Super easy to use and covered the grooved s”

FAQs for 1999 Mercury Mountaineer Transfer Cases

What are the best-selling Transfer Cases for 1999 Mercury Mountaineers?

Out of 17 Transfer Cases that fit 1999 Mercury Mountaineers, the following parts are the top sellers:

What’s the price range for 1999 Mercury Mountaineer Transfer Cases?

The prices of Transfer Cases for the 1999 Mercury Mountaineer range from $4.99 up to $114.99 for the most premium parts.

What is the average price of a Transfer Case for a 1999 Mercury Mountaineer?

The average price for Transfer Cases for the 1999 Mercury Mountaineer is $29.08. Keep in mind the variety of part types within our Transfer Case category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Transfer Cases for other Mercury Mountaineer model years?

Yes, we carry Transfer Cases for 12 model years of Mercury Mountaineers between 1997 and 2010. The following model years are the most popular for Transfer Case purchases: 2010, 2009, 2008, 2007, 2006, 2005, 2004, 2003, and 2002.

What are the cheapest Transfer Cases for my 1999 Mercury Mountaineer?

The cheapest 1999 Mercury Mountaineer Transfer Cases we carry are:

Does Advance Auto Parts sell Transfer Cases for any other 1999 Mercury models?

Yes. We stock Transfer Cases for 5 other popular 1999 Mercury models. Some of the most popular are 1999 Cougar Transfer Cases, 1999 Villager Transfer Cases, 1999 Sable Transfer Cases, 1999 Tracer Transfer Cases, and 1999 Mystique Transfer Cases.

What are the top-rated Transfer Cases that fit the 1999 Mercury Mountaineer?

The one 1999 Mercury Mountaineer Transfer Case we have in stock is the Oil Seal. It costs $4.99.

What types of Transfer Cases do you sell for my 1999 Mercury Mountaineer?

As of 11/2/25, these are some of the most in-demand types of Transfer Cases for a 1999 Mercury Mountaineer:

Can I get help with 1999 Mercury Mountaineer Transfer Case orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Mercury Transfer Cases and more.

What is your return policy for Mercury Mountaineer Transfer Cases?

Advance Auto Parts keeps returns simple. For new Mercury Mountaineer Transfer Cases and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.