1991 Geo Tracker Differentials
Keep Your 1991 Geo Tracker in Top Shape with Quality Differentials
Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1991 Geo Tracker looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Bearings, Front Differential Pinion Bearings, and Differential Oil. 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.
Competitive Prices and Extensive Inventory
The average price for a 1991 Geo Tracker Differential at Advance Auto Parts is around $151.32, with a range that starts at $11.99 and goes up to $413.99. With 6 options in stock from 4 trusted brands, finding the right fit is easy. Popular picks like DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart, Multi-Purpose Bearing, and Multi-Purpose Bearing start at just $11.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Differential, 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 1991 Geo Tracker in peak condition, inside and out.
Find Your Specific 1991 Geo Tracker Differentials
Looking for the perfect Differential for your 1991 Geo Tracker? You’re in the right place. Below, you’ll find links to various types of Differentials that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Differentials, ensuring durability and a precise fit for your Geo Tracker. Whether you’re driving a 1991 model or another popular model year like
1989,
1990,
1992,
1993,
1994,
1995,
1996, and
1997, we’ve got you covered. Purchasing Differentials from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Differentials that fit your vehicle.
Essential 1991 Geo Tracker Differentials
National – Multi-Purpose Bearing (Part No.30306)
from
$51.99
Product Features:
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- CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
- PREMIUM MATERIALS: Precision manufactured using high-quality materials for 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
Driveworks – Camshaft Seal (Part No.S-99139)
Driveworks – Differential Seal (Part No.S-473823)
Powertrax – Lock Right Locker (Part No.1532-LR)
from
$413.99
The Powertrax Lock-Right ultra-strength alloy locker’s straight-line performance is equal to a solid spool, but automatically unlocks in turns. Best suited for extreme off-road to severe on-road use, Powertrax Lock Right lockers replace the spider gears in your open differential carrier using basic tools and without affecting your ring and pinion settings. The whole job can be done in your driveway in a couple of hours, pin included! Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles. Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction. Powertrax® = Extreme Traction Systems!
See More
Valvoline – DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (Part No.798153)
from
$11.99
Valvoline DEX/MERC ATF is a high-quality transmission fluid formulated to meet the challenging demands of many automatic transmissions. Its responsive low-temperature fluidity is beneficial in both electronic and hydraulic controlled transmissions and transaxles. Recommended for use in the following applications: MERCON*, DEXRON*-III, Ford M2C138-CJ and M2C166-H, Allison C-4 and TES-389, and Caterpillar TO-2.
Product Features:
See More
Product Features:
- Formulated with premium base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
- Enhanced anti-shudder protection for smooth shifting and maximum power transfer
- Developed with anti-wear technology to help improve transmission durability
- Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
Mobil 1 – 75W-90 Full Synthetic Gear Lubricant, Extends Gear Life, 1 Quart (Part No.26101)
from
$19.99
Mobil 1 Synthetic Gear Lubricant LS 75W-90 is a supreme, multi-purpose automotive gear lubricant that helps to provide exceptional thermal stability and resistance to high temperature oxidation, extending gear life due to minimal deposits. Helps to deliver outstanding protection against low speed/high torque wear with the capability to handle severe driving conditions while delivering smooth efficient performance. Mobil 1 Synthetic Gear Lubricant LS provides exceptional shear stability, corrosion protection, and enhanced frictional properties. Compared to conventional hypoid gear lubricants, Mobil 1 LS 75W-90 performs exceptionally over a wide range of temperatures to reduce wear at start up. Mobil 1 gear lube helps to minimize leakage and reduce contamination while providing good resistance to foaming to maintain film strength for reliable lubrication. Meets or exceeds the requirements of the following industry specifications: API GL-5.
Product Features:
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Product Features:
- Mobil 1 LS synthetic automotive gear lubricant exceeds the highest level of performance requirements of modern passenger vehicles
- Helps to provide exceptional thermal stability and resistance to high temperature oxidation and extend gear life due to minimal deposits
- Delivers outstanding protection against low speed/high torque wear, handling severe driving conditions with smooth, efficient performance
- Compared to conventional hypoid gear lubricants, performs exceptionally over a wide range of temperatures to reduce wear at start up
- Provides exceptional shear stability, corrosion protection, and enhanced frictional properties
- Manufacturer Part Number: 104361
Idemitsu – Type HP Automatic Transmission Fluid , 1 Quart (Part No.10107-042F)
from
$10.29
Formulated to meet the specific requirements of Subaru vehicles equipped with conventional (non-CVT) transmissions up to model year 2005. Recommended for service-fill in all Subaru automatic transmissions where SUBARU ATF HP is specified. Fuel economy demands and more sophisticated electronic controls have made automatic transmissions not only more complex, but also unique to each vehicle manufacturer. Long gone are the days of having just a couple choices of automatic transmission fluid type. Idemitsu is the factory fill Automatic Transmission Fluid (ATF) supplier to most Asian imports. Idemitsu application-specific ATF products match the exact friction materials and performance requirements of each different vehicle model for which they are made.
Product Features:
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Product Features:
- Excellent resistance to oxidation and thermal breakdown provide long fluid life and extended protection
- Precisely engineered frictional characteristics guarantee smooth shifting and outstanding anti-shudder performance
- Excellent resistance to oxidation and thermal breakdown provide long fluid life and extended protection
- Excellent seal compatibility and conditioning reduces risk of fluid leaks due to seal shrinkage, hardening and cracking
- Advanced anti-wear technology provides maximum protection to gears and bearings
- Precisely engineered frictional characteristics guarantee smooth shifting and outstanding anti-shudder performance
- Provides superior cleanliness, maintaining the transmission free of sludge and varnish deposits
- Excellent seal compatibility and conditioning reduces risk of fluid leaks due to seal shrinkage, hardening and cracking
- Advanced anti-wear technology provides maximum protection to gears and bearings
National – Multi-Purpose Bearing (Part No.KC-11445-Y)
from
$69.99
Product Features:
See More
- CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
- PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
- SMOOTH ROTATION: Crowned raceways and rollers for even load distribution
- 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
Powertrax – Lock Right Locker (Part No.1512-LR)
from
$335.99
The Powertrax Lock-Right ultra-strength alloy locker’s straight-line performance is equal to a solid spool, but automatically unlocks in turns. Best suited for extreme off-road to severe on-road use, Powertrax Lock Right lockers replace the spider gears in your open differential carrier using basic tools and without affecting your ring and pinion settings. The whole job can be done in your driveway in a couple of hours, pin included! Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles. Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction. Powertrax® = Extreme Traction Systems!
See More
Popular 1991 Geo Tracker Differentials Categories
Most Popular Differential Bearing for 1991 Geo Trackers
Enhance your 1991 Geo Tracker with this popular Differential Bearing we have in stock, for $69.99.
National – Multi-Purpose Bearing (Part No.KC-11445-Y)
from
$69.99
Product Features:
See More
- CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
- PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
- SMOOTH ROTATION: Crowned raceways and rollers for even load distribution
- 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
Best-Selling 1991 Geo Tracker Front Differential Pinion Bearing
Upgrade your Tracker with our best-selling Front Differential Pinion Bearing.
National – Multi-Purpose Bearing (Part No.30306)
from
$51.99
Product Features:
See More
- CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
- PREMIUM MATERIALS: Precision manufactured using high-quality materials for 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
Top-Quality Differential Oil for 1991 Geo Trackers
Choose a high-quality OEM or aftermarket Differential Oil for Geo Trackers and enjoy top-notch performance from $11.99.
Valvoline – DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (Part No.798153)
from
$11.99
Valvoline DEX/MERC ATF is a high-quality transmission fluid formulated to meet the challenging demands of many automatic transmissions. Its responsive low-temperature fluidity is beneficial in both electronic and hydraulic controlled transmissions and transaxles. Recommended for use in the following applications: MERCON*, DEXRON*-III, Ford M2C138-CJ and M2C166-H, Allison C-4 and TES-389, and Caterpillar TO-2.
Product Features:
See More
Product Features:
- Formulated with premium base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
- Enhanced anti-shudder protection for smooth shifting and maximum power transfer
- Developed with anti-wear technology to help improve transmission durability
- Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
Our Top Pick for a 1991 Geo Tracker Differential Open Unit and Component
Invest in a
durable Differential Open Unit and Component for your 1991 Geo, knowing you’re getting trusted brands and expert craftsmanship.
Powertrax – Lock Right Locker (Part No.1532-LR)
from
$413.99
The Powertrax Lock-Right ultra-strength alloy locker’s straight-line performance is equal to a solid spool, but automatically unlocks in turns. Best suited for extreme off-road to severe on-road use, Powertrax Lock Right lockers replace the spider gears in your open differential carrier using basic tools and without affecting your ring and pinion settings. The whole job can be done in your driveway in a couple of hours, pin included! Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.Powertrax® = Extreme Traction Systems!
See More
Our Differential Seals for 1991 Geo Trackers
Make a smart move for your 1991 Geo Tracker with our Differential Seal for $23.99.
Driveworks – Camshaft Seal (Part No.S-99139)
FAQs for 1991 Geo Tracker Differentials
What are the best-selling Differentials for 1991 Geo Trackers?
Out of 6 Differentials that fit 1991 Geo Trackers, the following parts are the top sellers:
- DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (12079139) – $11.99
- Multi-Purpose Bearing (3273601) – $51.99
- Multi-Purpose Bearing (3277208) – $69.99
What’s the price range for 1991 Geo Tracker Differentials?
The prices of Differentials for the 1991 Geo Tracker range from $11.99 up to $413.99 for the most premium parts.
What is the average price of a Differential for a 1991 Geo Tracker?
The average price for Differentials for the 1991 Geo Tracker is $151.32. Keep in mind the variety of part types within our Differential category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Differentials for other Geo Tracker model years?
What are the cheapest Differentials for my 1991 Geo Tracker?
The cheapest 1991 Geo Tracker Differentials we carry are:
- DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (12079139) – $11.99
- Camshaft Seal (11494113) – $23.99
- Multi-Purpose Bearing (3273601) – $51.99
- Multi-Purpose Bearing (3277208) – $69.99
- Lock Right Locker (10461087) – $335.99
Does Advance Auto Parts sell Differentials for any other 1991 Geo models?
Yes. We stock Differentials for 2 other popular 1991 Geo models. Some of the most popular are 1991 Prizm Differentials, 1991 Storm Differentials, and 1991 Metro Differentials.
What types of Differentials do you sell for my 1991 Geo Tracker?
As of 11/2/25, these are some of the most in-demand types of Differentials for a 1991 Geo Tracker:
Can I get help with 1991 Geo Tracker Differential orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Geo Differentials and more.
What is your return policy for Geo Tracker Differentials?
Advance Auto Parts keeps returns simple. For new Geo Tracker Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.