2004 Mercury Mountaineer Transfer Cases

Keep Your 2004 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 2004 Mercury Mountaineer looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Transfer Case Output Shaft Seals, Input Shaft Seals, and Input Shaft Bearings. 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 7 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 2004 Mercury Mountaineer Transfer Case at Advance Auto Parts is around $68.34, with a range that starts at $7.49 and goes up to $203.99. With 12 options in stock from 7 trusted brands, finding the right fit is easy. Popular picks like Taper Bearing Cone, Transfer Case Adapter Gasket, and Transfer Case Input Shaft Seal start at just $7.49 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 Drive Shafts and Axles and Universal Joints. At Advance Auto Parts, we’re here to help you keep your 2004 Mercury Mountaineer in peak condition, inside and out.

Essential 2004 Mercury Mountaineer Transfer Cases

Carquest Premium – Transfer Case Range Sensor (Part No.SNA1198)

Transfer Case Range Sensor

from

$104.99
4-wheel drive vehicles with 2-wheel and 4-wheel drive systems will typically have a 3-range transfer case which allows engagement and disengagement of the 4-wheel drive system. In order for the manual and automatically controlled systems to operate, the exact drive engagement selection of the transfer case is required for safety and system reliability.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
  • 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
  • Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
  • Lead frame terminal size and location determined using image dimension measuring system or 3D laser scanner.
  • Application matched components ensures system operation in like new condition.
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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

Carquest Premium – Transfer Case Output Shaft Sensor (Part No.SNA1287)

Transfer Case Output Shaft Sensor

from

$88.99
The Transfer Case Output Shaft Speed Sensor provides an input to the transfer case control module concerning the speed of the front output shaft. The transfer case encoder model requires an input indicating movement of the front shaft to determine a shift from 2WD to 4WD actually occurred.

Product Features:
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • Where applicable, robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
  • Magnet size and strength optimized for precise signal output.
  • Precision-wound coated copper windings increase signal output and increase longevity.
  • Tailored magnetic circuit programming enhances timing accuracy between the reluctor wheel and circuit output.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
  • 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
See More

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

Dorman – Transfer Case Shift Motor (Part No.600-912)

Transfer Case Shift Motor

from

$222.99
Transfer case stopped shifting between high and low ranges? Swap out a seized transfer case motor with this direct replacement. Designed to install and perform like the original motor, it uses a factory-style connector and is sealed for protection.

Product Features:
  • Direct replacement – this transfer case motor fits and performs like the original motor on certain vehicle applications
  • Durable construction – made with factory-style electrical connector and weathertight seal to prevent corrosion
  • 100% new – this transfer case motor is entirely new, not remanufactured like competitors
  • Quality assured – vehicle-specific application has been validation tested to ensure quality
See More

Dorman – Transfer Case Shift Motor (Part No.600-924)

Transfer Case Shift Motor

from

$203.99
Transfer case stopped shifting between high and low ranges? Swap out a seized transfer case motor with this direct replacement. Designed to install and perform like the original motor, it uses a factory-style connector and is sealed for protection.

Product Features:
  • Direct replacement – this transfer case motor fits and performs like the original motor on certain vehicle applications
  • Durable construction – made with factory-style electrical connector and weathertight seal to prevent corrosion
  • 100% new – this transfer case motor is entirely new, not remanufactured like competitors
  • Quality assured – vehicle-specific application has been validation tested to ensure quality
See More

Cardone – Remanufactured Transfer Case Motor (Part No.48-209)

Remanufactured Transfer Case Motor

from

$193.99
CARDONE Remanufactured Transfer Case Motors are designed to meet or exceed O.E. performance. Reverse engineering provides insight into how and why the unit originally failed, allowing our engineers to identify and correct original design weaknesses. Each unit is 100 percent computer tested at three points during the remanufacturing process to ensure reliability. CARDONE is committed to getting your vehicle back to peak performance with our direct-replacement transfer case motors.

Product Features:
  • All motors are 100 percent torque tested to ensure strength for proper gear engagement.
  • Each unit is 100 percent computer tested at 3 points during the remanufacturing process for guaranteed performance.
  • Every motor is assembled with the precise amount of lubricant to ensure quiet operation and long life.
  • Motor magnets are 100 percent recharged for superior performance and reliability.
  • Transfer case motor sensors are 100 percent replaced with new, O.E.-quality sensors for superior performance and long product life.
  • As a remanufactured Original Equipment part, this unit guarantees a perfect vehicle fit.
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Cardone – Remanufactured Transfer Case Motor (Part No.48-204)

Remanufactured Transfer Case Motor

from

$111.99
CARDONE Remanufactured Transfer Case Motors are designed to meet or exceed O.E. performance. Reverse engineering provides insight into how and why the unit originally failed, allowing our engineers to identify and correct original design weaknesses. Each unit is 100 percent computer tested at three points during the remanufacturing process to ensure reliability. CARDONE is committed to getting your vehicle back to peak performance with our direct-replacement transfer case motors.

Product Features:
  • All motors are 100 percent torque tested to ensure strength for proper gear engagement.
  • Each unit is 100 percent computer tested at 3 points during the remanufacturing process for guaranteed performance.
  • Every motor is assembled with the precise amount of lubricant to ensure quiet operation and long life.
  • Motor magnets are 100 percent recharged for superior performance and reliability.
  • Transfer case motor sensors are 100 percent replaced with new, O.E.-quality sensors for superior performance and long product life.
  • As a remanufactured Original Equipment part, this unit guarantees a perfect vehicle fit.
See More

Carquest Premium – Multi-Purpose Relay (Part No.RAC2046)

Multi-Purpose Relay

from

$174.99
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • Where applicable, robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
  • Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
  • 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
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

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

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 – 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 – 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
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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 – 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

Most Popular Transfer Case Output Shaft Seals for 2004 Mercury Mountaineers

Enhance your 2004 Mercury Mountaineer with one of the 2 Transfer Case Output Shaft Seals we have in stock, starting at just $10.79.

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

Best-Selling 2004 Mercury Mountaineer Input Shaft Seal

Upgrade your Mountaineer with our best-selling Input Shaft Seal.

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

Top-Quality Input Shaft Bearings for 2004 Mercury Mountaineers

Choose a high-quality OEM or aftermarket Input Shaft Bearing for Mercury Mountaineers and enjoy top-notch performance from $11.29.

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

Our Top Pick for a 2004 Mercury Mountaineer Transmission Transfer Case Motor

Invest in a durable Transmission Transfer Case Motor for your 2004 Mercury, knowing you’re getting trusted brands and expert craftsmanship.

Dorman – Transfer Case Shift Motor (Part No.600-924)

Transfer Case Shift Motor

from

$203.99
Transfer case stopped shifting between high and low ranges? Swap out a seized transfer case motor with this direct replacement. Designed to install and perform like the original motor, it uses a factory-style connector and is sealed for protection.

Product Features:
  • Direct replacement – this transfer case motor fits and performs like the original motor on certain vehicle applications
  • Durable construction – made with factory-style electrical connector and weathertight seal to prevent corrosion
  • 100% new – this transfer case motor is entirely new, not remanufactured like competitors
  • Quality assured – vehicle-specific application has been validation tested to ensure quality
See More

Our Transfer Case Adapter Gaskets for 2004 Mercury Mountaineers

Make a smart move for your 2004 Mercury Mountaineer with our Transfer Case Adapter Gasket 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

Top-Rated Transfer Case Brands For Your 2004 Mercury Mountaineer

When it comes to finding the perfect Transfer Case for your 2004 Mercury Mountaineer, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 7 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 2004 Mercury Mountaineer, providing peace of mind with parts that meet or exceed OEM standards.

Popular National 2004 Mercury Mountaineer Transfer Cases

If you’re looking for a top-quality Transfer Case for your 2004 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 2004 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 2004 Mercury Mountaineer Transfer Cases

What are the best-selling Transfer Cases for 2004 Mercury Mountaineers?

Out of 12 Transfer Cases that fit 2004 Mercury Mountaineers, the following parts are the top sellers:

What’s the price range for 2004 Mercury Mountaineer Transfer Cases?

The prices of Transfer Cases for the 2004 Mercury Mountaineer range from $7.49 up to $203.99 for the most premium parts.

What is the average price of a Transfer Case for a 2004 Mercury Mountaineer?

The average price for Transfer Cases for the 2004 Mercury Mountaineer is $68.34. 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, 2003, 2002, and 2001.

What are the cheapest Transfer Cases for my 2004 Mercury Mountaineer?

The cheapest 2004 Mercury Mountaineer Transfer Cases we carry are:

Does Advance Auto Parts sell Transfer Cases for any other 2004 Mercury models?

Yes. We stock Transfer Cases for 2 other popular 2004 Mercury models. Some of the most popular are 2004 Monterey Transfer Cases, 2004 Marauder Transfer Cases, and 2004 Grand Marquis Transfer Cases.

What are the top-rated Transfer Cases that fit the 2004 Mercury Mountaineer?

Based on 7 reviews by customers, our 2004 Mercury Mountaineer Transfer Cases have an average customer rating of 2 stars. These are the highest-rated categories of Transfer Cases for the 2004 Mercury Mountaineer and their top-rated products:

What types of Transfer Cases do you sell for my 2004 Mercury Mountaineer?

As of 11/2/25, these are some of the most in-demand types of Transfer Cases for a 2004 Mercury Mountaineer:

Can I get help with 2004 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.