1999 Ford Expedition Differentials

Keep Your 1999 Ford Expedition in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1999 Ford Expedition looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Oil, Differential Bearings, and Differential Covers. 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 Differentials from Trusted Brands

Looking for a reliable Differential? We’ve got you covered with options from brands you know and trust like Motive Gear, National, and Dorman. For example, Motive Gear Differentials start at just $7.99 with an average 4.0 star rating. National and Dorman offer similar pricing and quality, backed by strong customer feedback. With over 2,346 reviews and a solid 4 star average, you can shop with confidence knowing other Ford Expedition owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1999 Ford Expedition Differential at Advance Auto Parts is around $290.30, with a range that starts at $1.99 and goes up to $2,204.99. With 293 options in stock from 18 trusted brands, finding the right fit is easy. Popular picks like DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart, Axle Housing Cover Gasket Rectangular Shaped, 10 Bolt Hole Gasket, and Axle Housing Cover Gasket Irregular Shaped 12 Bolt Hole Gasket 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 1999 Ford Expedition in peak condition, inside and out.

Looking for the perfect Differential for your 1999 Ford Expedition? 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 Ford Expedition. Whether you’re driving a 1999 model or another popular model year like 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, and 2024, 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 1999 Ford Expedition Differentials

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$78.99

8.8″ Ford 3/4″ Notched cross pin shaft (0.750″, ’85 and older). This cross pin shaft is not compatible with Powertrax Lock Rights or Spartan Lockers.

Product Features:

Cross pin shaft
Fits Ford 8.8″
0.750″ diameter
Notched
Not compatible with Spartan Lockers or Lock Rights

from

$27.99

8.25″ IFS, 8.5″, 12P, 7.5″ F, 8.8″ F, 8.25″ Chrysler pinion shim kit.

Product Features:

Pinion depth shims for GM 8.25″ IFS, 8.5″, 8.6″, 12 bolt passenger car, Ford 7.5″ and 8.8″, Chrysler 8.25″

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$59.99

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

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$209.99

Product Features:

Spider gear kit
Fits Ford 8.8″ 31 spline open differential
Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers.

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$719.99

Product Features:

Trac Loc positraction
Fits Ford 8.8″ with 31 spline axles

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$94.99

9.75″ Ford Supershim carrier shim kit.

Product Features:

Super carrier shim kit for Ford 9.75″
Interlocking design makes installation much easier

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$27.99

Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.

Product Features:

PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
SMOOTH ROTATION – Crowned raceways 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

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$167.99

Yukon Pinion installation kits are a terrific solution for gear installation on lower mileage vehicles where the carrier bearings & races can be reused. This kit uses Timken bearings and races along with a high quality pinion seal and small parts. Included in this kit are the pinion bearings and races, pilot bearing (if applicable), crush sleeve (if applicable), complete pinion shim kit, pinion nut, thread locker, and marking compound with brush. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your pinion gear.

Product Features:

Fits 2009 and down Ford 8.8″
Included are pinion bearings and races, pinion seal, crush sleeve , complete pinion shim kit, and marking compound with brush.

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$11.99

Pinion gear thrust washer (0.875″ shaft) for 8.8″ Ford.

Product Features:

Pinion gear thrust washer for Ford 8.8″
0.875″ diameter cross pin shaft applications only

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$6.99

Side gear thrust washer (0.750″ shaft) for 8.8″ Ford.

Product Features:

Side gear thrust washer for Ford 8.8″
0.750″ diameter cross pin shaft applications only

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$386.99

Product Features:

Dura Grip positraction carrier case
Does not include spider gears
Fits Ford 8.8″ with 31 spline axles

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$8.99

Replacement outer oil slinger for Ford 7.5″, 8.8″, 9″, 10.25″, Nissan Titan rear, Dana 44 Rubicon & 44 JK non-Rubicon.

Product Features:

Outer oil slinger for Ford 10.25″, 7.5″, 8.8″ and 9″ also Jeep JK and Nissan Titan rear

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$269.99

This differential disc kit is a low-cost, time-saving repair solution for the posi-traction function. They are designed to match the fit and performance of the original disc on specific vehicle years, makes and models.

Product Features:

Direct replacement – this differential clutch kit provides the necessary components for repairing the original equipment on specific vehicles
Quality materials – all components are built for reliable longevity and performance
Smart solution – provides original equipment fit and function for a competitive price compared to original manufacturer
Trustworthy quality – backed by team of designers and engineers in the United States

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$269.99

USA Standard ring & pinion sets are the right choice to add confidence to your install. USA Standard Gear offers a full line of ring & pinion sets for a variety of common & hard to find applications. USA standard gear offers a standard one year warranty against defects on their ring & pinion sets.

Product Features:

Fits standard rotation Ford 8.8″
8.80″ ring gear diameter
30 spline pinion
10 ring gear bolts
3.27 ratio

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$192.99

Product Features:

FULL SPOOL FORD 8.8″ 31 SPL

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$8.99

High-quality Differential Carrier Shim Kit

Product Features:

CARRIER SHIMS 12 BOLT GM CAR & TRUCK ALSO GM8.6″ 99-ON

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$371.99

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!

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$26.99

Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND!

Product Features:

For over 80-years, the Richmond Double-Diamond logo has represented some of the highest quality gears in the racing industry. Winners Run Richmond!
The superior quality of Richmond gearsets is a result of outstanding design, world class manufacturing and an extensive testing process that is performed on all products.
Richmond performance gearsets have been winners for decades at: NHRA, NMRA, NMCA, Daytona 500, WISSOTA and U.S. Nationals.
Richmond Gear is a leading manufacturer of high performance ring and pinion gearsets and drivetrain components, backed by a two year warranty.
Engineered to perform faster and be more reliable, Richmond performance drivetrain products are the result of a continuous research and development program combined with state-of-the-art manufacturing capabilities.

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$20.99

Our wheel seals are engineered using only the highest-quality materials to meet vehicle manufacturer specificatons. We work with suppliers to design seals that meet FAG’s quality standards. Seals are designed to protect wheel end components from contamination – such as dirt, dust, and moisture – and prevent the loss of grease over the life of the bearing. The specifications for wheel seals are very demanding, and the type required depends on the specific application, position and vehicle class.

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

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$58.99

Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.

Product Features:

PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
SMOOTH ROTATION – Crowned raceways 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

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$2.99

Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

Product Features:

All products are designed to meet or exceed OE quality, form, fit and funtion.

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$99.99

Product Features:

Trac Loc spring for Ford 8.8″
31 spline applications only

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$921.99

Product Features:

Each LuK GearBOX contains all the OE quality bearings needed for a professional transmission repair
LuK Differential Bearing Kits are designed to meet or exceed OEM requirements. This will ensure customer satisfaction.
LuK Differential Bearing Kits contain the bearings and seals needed to complete the job.
LuK Differential Bearing Kits include wear parts such as seals, O-rings, shaft sealing rings, support bearings and spare parts where necessary for eliminating the specific cause of failure.

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$151.99

MiniSpool

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$26.99

Spartan spring & pin kit, fits smaller designs.

Product Features:

Replacement spring and pin kit for Spartan Locker
Fits Dana 30, Dana 44, AMC Model 20, AMC Model 35, and Toyota designs
Includes 4 springs and 4 alignment pins

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$18.49

Valvoline ULV is a full synthetic, ultra low viscosity transmission fluid specifically engineered for high speed automatic transmissions. Formulated to meet the performance requirements of the latest 9 & 10 speed transmission designs, including the Ford/GM 10R80 found in select Ford F-150 and Raptor trucks.

Product Features:

Formulated with premium synthetic base oils to achieve low viscosity and minimize deposits
Provides excellent thermal and oxidation performance
Durable friction modifiers help prevent shudder
Advanced anti-wear technology to better prevent gear wear

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$6.99

Yukon 1541H alloy replacement rear axle for Dana 60, 70, and 80, 35 spline. (40″ to 43.5″) Full float axle (8×3.96″ ). Yukon 1541H alloy axles offer a strength increase over stock while retaining a low cost. Yukon 1541H alloy rear axles come with a one year warranty against manufacturing defects. This is a full-floating axle.

Product Features:

35 spline
8 x 3.96″ bolt pattern
Cut to length design fits 40″-43.5″ applications
Fits Dana Spicer 60, 70 and 80

Popular 1999 Ford Expedition Differentials Categories

Differential Oil

Rear Differential Cover Gaskets

Differential Open Unit and Components

Differential Covers

Differential Pinion Shaft Lock Bolts

Differential Bearings

Differential Axle Shafts

Differential Pinion Pilot Bearings

Differential Cover Bolts

Differential Carriers

Differential Bearing Kits

Front Differential Pinion Bearings

Differential Spider Gear Kits

Differential Rebuild Kits

Differential Carrier Shim Kits

Differential Pinion Seals

Differential Disc Kits

Differential Clutch Packs

Differential Mini Spools

Differential Ring and Pinions

Differential End Yokes

Differential Lock Assemblies

Rear Differential Pinion Bearings

Differential Spools

Differential Carrier Bearings

Differential Lock Springs

Differential Pinion Bearing Kits

Complete Differentials

Differential Ring Gear Bolts

Bearing Race Drivers

Differential Pinion Shafts

Differential Carrier Bearing Shims

Differential Crush Sleeves

Differential Side Bearing Spacers

Differential Pinion Shims

Differential Pinion Shaft Nuts

Differential Gear Install Kits

Differential Cross Pins

Differential Side Gear Thrust Washers

Differential Pinion Bearing Baffles

Differential Pinion Gear Thrust Washers

Differential Drive Pinion Oil Deflectors

Differential Ring and Pinion Kits

Limited Slip Differential Assemblies

Differential Pinion Gear Nut

Most Popular Differential Oil for 1999 Ford Expeditions

Enhance your 1999 Ford Expedition with one of the 7 Differential Oil we have in stock, starting at just $11.99.

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$41.99

Royal Purple Motor Oil is a specially formulated multi viscocity oil for use in gasoline and diesel engines of all types from cars and trucks to SUVs, motorcycles and boats. Royal Purple(R) Motor Oil with Synerlec(R) additive technology reduces friction, which results in a 1-3 percent increase in horsepower, lowers operating temperatures, provides superior corrosion protection, improves fuel economy, reduces emissions and extends oil life. A.P.I. Certified.

Product Features:

Better wear protection
Increased fuel efficiency
Better protection of the expensive catalytic emission system
Improved compatibility with fuels containing ethanol
Superior corrosion protection
Meets ILSAC GF-5 and Dexos1 performance requirements

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$14.49

Valvoline DEXRON-VI/MERCON LV ATF is a full-synthetic transmission fluid formulated with advanced additive technology to meet and exceed the requirements of the General Motors DEXRON-VI specification. It is officially licensed and approved by GM and is fully back-serviceable and can be used wherever DEXRON-II and/or DEXRON-III are recommended. Recommended for use in the following applications: DEXRON-VI, DEXRON-III, DEXRON-II, and Allison C-4.

Product Features:

Formulated with full-synthetic 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

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$69.99

Valvoline SAE 75W-140 Full Synthetic Gear Oil provides the ultimate gear protection in hypoid rear differentials and non-synchronized manual transmissions. Engineered to outperform, our formulation provides exceptional high and low temperature protection and excellent thermal stability, especially in demanding driving situations such as towing and off-roading. It contains an extreme pressure additive for better load carrying capacity and wear resistance, a limited slip additive for optimal clutch pack performance, and an anti-foaming agent for better lubrication and service life. It’s recommended for conventional rear axles and transmissions requiring EP gear lubes under high speed, high load, high torque and high horsepower conditions.

Product Features:

EXCEPTIONAL HIGH AND LOW TEMPERATURE PROTECTION ranging from -22F to 390F degrees
REDUCES CHATTERING AND PROTECTS GEAR TEETH from oxidation, rust, and wear
FIGHTS CORROSION AND RUST with emulsifying agents and safeguards against impurities, oxidation and thermal breakdown
MEETS THE DEMANDS OF CONVENTIONAL AND LIMITED SLIP REAR DIFFERENTIALS where API GL-5 is specified, as well as non-synchronized manual transmissions that require API GL-4
MEETS OR EXCEEDS PERFORMANCE REQUIREMENTS for Ford M2C-192A, GM 12346140, Chrysler MS-8985 and API GL-5

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$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:

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

from

$148.99

Redline Synthetic “Shock Proof” Oil with positraction Additive. 4 Quarts.

Product Features:

Includes four quarts of Redline Shockproof oil and one 4oz bottle of Yukon positraction additive

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$99.99

Redline Synthetic “Shock Proof” Oil. 3 Quarts.

Product Features:

Includes three quarts of Redline Shockproof oil

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$137.99

Redline Synthetic “Shock Proof” Oil. 4 Quarts.

Product Features:

Includes four quarts of Redline Shockproof oil

Best-Selling 1999 Ford Expedition Differential Bearings

Upgrade your Expedition with one of our 10 best-selling Differential Bearings, earning an average 4 stars rating across 1 reviews.

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from

$27.99

Product Features:

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

from

$98.99

Product Features:

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

from

$59.99

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

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$24.79

We develop and produce high-quality roller bearings, spherical bearings, and plain bearings worldwide for a wide range of applications.

Product Features:

Radial Ball Bearing, Both Sides Shield.
Coverage of classic and new high-tech solutions for the best system coverage

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$21.79

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

from

$11.99

Cross pin bolt with 5/16 x 18 thread for 10.25″ Ford.

Product Features:

Cross pin bolt for Ford 9.75″ and 10.25″ with c-clip axles
5/16″ x 18 thread

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$11.29

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

from

$9.99

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

from

$7.29

Product Features:

PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
SMOOTH ROTATION: Crowned raceways 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

from

$6.99

Cross pin bolt for Chrysler 8.25″, 9.25″ rear, Ford 7.5″, 8.8″, GM 12 bolt car & truck, 7.2″ IFs, 7.5″, 7.6″, 8.0″, 8.25″ IFS & 8.5″.

Product Features:

Cross pin bolt for Chrysler 8.25″ and 9.25″ rear, Ford 7.5″ and 8.8″, GM 12 botl car and truck, 8.5″, 8.25″ IFS, 8.0″, 7.625″, 7.5″ and 7.2″ IFS

Top-Quality Differential Covers for 1999 Ford Expeditions

Choose a high-quality OEM or aftermarket Differential Cover for Ford Expeditions and enjoy top-notch performance from $37.99.

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from

$60.99

This direct replacement differential cover matches the fit and function of the original equipment diff cover for a reliable, leak-free repair. It features a durable design, made to strict specifications, to help ensure reliable service life.

Product Features:

Direct replacement – this differential cover matches the fit and function of the original equipment diff cover on select vehicles
Reliable repair – the smart solution for fixing an existing cover that’s rusted, damaged or leaking differential fluid
Durable construction – this differential cover is made according to strict engineering standards to help ensure dependability
Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience

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$41.99

Direct replacement – this differential cover matches the fit and function of the original equipment diff cover on select vehicles
Reliable repair – the smart solution for fixing an existing cover that’s rusted, damaged or leaking differential fluid
Durable construction – this differential cover is made according to strict engineering standards to help ensure dependability
Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience

from

$37.99

DIFF COVER KIT

from

$99.99

Yukon outer stub axle for Chrysler 9.25″ front. This axle uses a 1485 u/joint and has 33 splines.

Product Features:

Fits Ford 8.8″
Steel

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$74.99

Chrome cover for 8.8″ Ford.

Product Features:

Fits Ford 8.8″
Chrome

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$57.99

Chrome cover for 9.75″ Ford.

Product Features:

Fits Ford 9.75″
Chrome

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$419.99

8.8″ Ford low profile TA HD Aluminum rear Cover. This cover will not fit vehicles with independent rear suspension.

Product Features:

Fits Ford 8.8″
Aluminum girdle cover

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$54.99

DIFF COVER KIT

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$354.99

9.75″ Ford TA HD aluminum cover.

Product Features:

Fits Ford 9.75″
Aluminum girdle cover

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$269.99

B&M Cast Aluminum Differential Covers are designed to strengthen the differential by preventing case distortion and ring gear & bearing cap deflection. Constructed of A356.0-T6 aluminum, these rugged covers significantly increase the fluid capacity and dissipate heat much faster than the stock factory unit to prolong the life of your ring and pinion gears. Additional features include an engraved B&M logo, drain and fill port locations, a magnetic drain plug for catching ferrous metal particles, and complete hardware and installation instructions.

Product Features:

Additional Oil Capacity
More Cooling Ability
No Dipstick Modification
Some Include Fluid Pickup Extension
Built-In Drain Plugs
Cast Aluminum

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$197.99

If you venture off the beaten path, plow snow, or subject your truck or SUV to extreme conditions, this rugged rear differential cover will boost the protection and personality of your vehicle’s drivetrain. Instead of the vulnerable thin stamped steel original equipment cover, this diff cover is precision-engineered from thick ductile iron and boasts an attractive, corrosion-resistant wrinkle coating. Rocks, trail hazards and damaging debris can easily ding an ordinary differential cover, leading to oil leaks and cracks. Plow trucks undergo stress due to the weight of salters and plows, and the no-brakes impacts of hidden potholes, coupled with the corrosive nature of all the salt season after season. This cover also features two filler plugs, which can help ease the difficulties of filling through the factory plug located on the axle housing. The cover is also fitted with a drain plug to make fluid exchanges quick, easy, and remove the need for replacing the differential cover gasket. This extra-rigid replacement will help keep critical components safe while adding a serious cool factor, especially on lifted vehicles. Want to customize your diff even more? We’ve made the stainless steel Dorman logo plate removable so you can replace it with the plate and logo of your choice. The cover comes complete with all necessary bolts and plugs for a complete upgrade.

Product Features:

Enhanced protection – ideal solution for off-road or snowplow vehicles that need additional protection from damaging rocks and other hazards that can crack an ordinary stamped steel differential cover
Precise fit – engineered to exacting specifications to match the fit and function of the original equipment differential cover for a seamless installation on specified Ford and Lincoln vehicles
Upgraded repair – made from rigid ductile (also known as nodular) iron with an attractive, corrosion-resistant wrinkled finish, and includes required bolts and three plugs for a complete installation and simplified maintenance
Customize it – includes a stainless steel Dorman logo plate that’s removable so you can replace it with the plate and logo of your choice
Contents: 1 Differential Cover; 1 Magnetic Drain Plug; 1 Fill Plug; 1 Inspection Port Plug; 12 5/16″-18 UNC Bolts

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$78.99

Yukon 4340 Chrome-Moly replacement rear axle for Dana 44, 30 spline (26″ -34″ CUT2LTH) TRIPLE DRILLED. Yukon 4340 Chrome Moly alloy axles offer a strength increase over stock while retaining a low cost. Yukon 4340 Chrome Moly alloy rear axles come wi

Product Features:

Fits Ford 9.75″
Steel

Top Picks for 1999 Ford Expedition Rear Differential Cover Gaskets

Invest in one of our 4 durable Rear Differential Cover Gaskets for your 1999 Ford, knowing you’re getting trusted brands and expert craftsmanship.

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$15.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

Product Features:

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Unsurpassed quality you can trust
Validated for fit, form and function
Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes

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$15.99

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 design to ensure a perfect fit
Engineered for the sealing repair environment
Validated for fit, form and function
Unsurpassed quality you can trust

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$23.99

Mr. Gasket Axle Housing/Differential Cover or Rear End Gaskets are manufactured from a .047 inch thick cellulose/nitrile composite gasket material for excellent sealing and durability. They are precision die-cut for an excellent fit.

Product Features:

.047″ thick cellulose/nitrile composite gasket material
Precision die cut
Reusable

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$12.99

8.8″ Ford cover gasket.

Product Features:

Cover gasket
Fits Ford 8.8″

Top-Rated Differential Pinion Seals for 1999 Ford Expeditions

Make a smart move for your 1999 Ford Expedition with products all priced from $5.99 to $20.99.

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from

$5.99

Value-priced seal meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$17.99

Pinion seal for 10.25″ Ford.Yukon Mighty seal.

Product Features:

Pinion seal
Fits Ford 10.25″

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$20.99

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

from

$15.99

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

from

$8.99

Pinion seal for 7.5″, 8.8″, and 9.75″ Ford, and also 1985-’86 9″ Ford.Yukon Mighty seal.

Product Features:

Pinion seal
Fits Ford 7.5″, 8.8″ and some 9.75″
2.785″ O.D.

Top-Rated Differential Brands For Your 1999 Ford Expedition

When it comes to finding the perfect Differential for your 1999 Ford Expedition, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 18 trusted brands. We carry the most popular Differential brands including National, Dorman, and Motive Gear, and more, all known for their exceptional customer ratings (average brand rating of 4.3 stars) and competitive prices, as low as $6.79. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1999 Ford Expedition, providing peace of mind with parts that meet or exceed OEM standards.

Popular National 1999 Ford Expedition Differentials

If you’re looking for a top-quality Differential for your 1999 Ford Expedition, Advance Auto Parts has exactly what you need with our selection of National Differentials. We have 3 National Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $7.99 and an average cost of $33.66, you’ll find the perfect Differential for your needs and budget. National Differentials for the 1999 Ford Expedition come highly rated, with over 26 customer reviews and an impressive average rating of 4.3 stars. Choosing a National Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.

from $53.99

(20)

Wheel Bearing: Direct Fit, 1 Piece

“Very good quality part”

from $38.99

(2)

Tapered Roller Bearing Cone

“nice finish and function. Should perform well.”

from $7.99

(4)

Bearing Race

“Goes with M88010 bearing cup. Application was the pinion bearing race for a Ford 9 Inch on a 1957 Ford F-100.”

Top-Quality Dorman 1999 Ford Expedition Differentials

For those in search of a high-quality Differential for their 1999 Ford Expedition, Advance Auto Parts offers a great selection of Dorman Differentials. With 3 Dorman Differentials in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Differentials start at just $6.79, with an average price of $36.59, giving you a range of options to suit your budget. Backed by over 59 customer ratings and an average rating of 4.2 stars, Dorman Differentials provide both reliability and excellent performance. Choosing a Dorman Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.

from $41.99

(34)

Differential Cover

“does not look like this in box, its black powder coated , this view is from the inside . there is a magnet in the diff cover”

from $6.79

(11)

Differential Shaft Lock Bolt

“Exactly like OEM”

from $60.99

(14)

Differential Cover

“installation was easy and part worked as it should have”

FAQs for 1999 Ford Expedition Differentials

What are the best-selling Differentials for 1999 Ford Expeditions?

Out of 293 Differentials that fit 1999 Ford Expeditions, the following parts are the top sellers:

DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (12079139) – $11.99
Axle Housing Cover Gasket Rectangular Shaped, 10 Bolt Hole Gasket (5782406) – $15.99
Axle Housing Cover Gasket Irregular Shaped 12 Bolt Hole Gasket (19783556) – $15.99

What’s the price range for 1999 Ford Expedition Differentials?

The prices of Differentials for the 1999 Ford Expedition range from $1.99 up to $2,204.99 for the most premium parts.

What is the average price of a Differential for a 1999 Ford Expedition?

The average price for Differentials for the 1999 Ford Expedition is $290.30. 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 Ford Expedition model years?

Yes, we carry Differentials for 26 model years of Ford Expeditions between 1997 and 2024. The following model years are the most popular for Differential purchases: 2023, 2022, 2024, 2021, 2020, 2019, 2018, 2017, and 2016.

What are the cheapest Differentials for my 1999 Ford Expedition?

The cheapest 1999 Ford Expedition Differentials we carry are:

Ring Gear Bolt (20520509) – $1.99
Differential Crush Sleeve (10282338) – $2.99
Oil Seal (5440211) – $5.99
Ford 7.5" & 8.8" Ring Gear Bolt, Standard Open & Tracloc (11642766) – $5.99
Pinion Crush Sleeves (22140006) – $6.49

Does Advance Auto Parts sell Differentials for any other 1999 Ford models?

Yes. We stock Differentials for 21 other popular 1999 Ford models. Some of the most popular are 1999 F-150 Differentials, 1999 F-250 Differentials, 1999 Mustang Differentials, 1999 E-250 Econoline Differentials, and 1999 E-350 Econoline Differentials.

What are the top-rated Differentials that fit the 1999 Ford Expedition?

The one 1999 Ford Expedition Differential we have in stock is the Ring Gear Bolt. It costs $1.99.

What types of Differentials do you sell for my 1999 Ford Expedition?

As of 11/2/25, these are some of the most in-demand types of Differentials for a 1999 Ford Expedition:

Can I get help with 1999 Ford Expedition Differential orders?

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

What is your return policy for Ford Expedition Differentials?

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

1999 Ford Expedition Differentials

Yukon Gear – 8.8" Ford 3/4" Notched Cross Pin Shaft (0.750", ’85 And Older) (Part No.33432)

Yukon Gear – Pinion Depth Shims For GM 8.25" IFS, 8.5", 12 Bolt Car, Ford 8.8" & Chrysler 8.25" (Part No.55009)

FAG US – Cone (Part No.KNP343847)

USA Standard Gear – Standard Spider Gear Set For Ford 8.8", 31 Spline (Part No.39016)

Yukon Gear – Trac Loc Positraction, Ford 8.8", 31 Spline (Part No.20069)

Yukon Gear – Super Carrier Shim Kit For Ford 9.75" (Part No.55062)

National – Bearing Race (Part No.HM89411)

Yukon Gear – Pinion Install Kit For Ford 8.8" Differential (Part No.13041)

Yukon Gear – Pinion Gear And Thrust Washer (0.875" Shaft) For 8.8" Ford (Part No.33299)

Yukon Gear – Side Gear And Thrust Washer (0.750" Shaft) For 8.8" Ford (Part No.33298)

Yukon Gear – Dura Grip Case For Ford 8.8", 31 Spline (Part No.20073)

Yukon Gear – Outer Oil Slinger For Ford 7.5", 8.8", 9", 10.25" (Part No.33022)

Dorman – Differential Clutch Kit (Part No.697-781)

USA Standard Gear – Ring & Pinion Gear Set For Ford 8.8" In A 3.27 Ratio (Part No.36309)

Motive Gear – Differential Spool (Part No.FS8.8-31)

Motive Gear – Differential Carrier Shim Kit (Part No.1101)

Powertrax – Lock Right Locker (Part No.1822-LR)

Richmond Gear – Differential Cross Shaft (Part No.CSPF88L)

FAG US – Shaft Seal (Part No.SS2852)

National – Bearings (Part No.NP434567)

Pro-King – Differential Crush Sleeve (Part No.761A034)

Yukon Gear – Trao Loc Spring For Ford 8.8", 31 Spline (Part No.33516)

LuK – Differential Repair Kit (Part No.GDK316A-MK)

Richmond Gear – MiniSpool (Part No.78-8831-1)

USA Standard Gear – Spartan Spring & Pin Kit, Fits Smaller Designs (Part No.17011)

Valvoline – ULV ATF Full Synthetic Ultra Low Viscosity Automatic Transmission Fluid, 1 Quart (Part No.888460)

Yukon Gear – Cover Bolt For Ford 7.5", 8.8" & 9.75" (Part No.33554)

Royal Purple – High Performance 5W-30 Synthetic Engine Oil, Better Wear Protection, 5 Quart (Part No.51530)

Valvoline – DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart (Part No.822405)

Valvoline – SynPower Transmission & Differential Gear Oil: Full Synthetic 75W-140, 1 Gallon (Part No.887344)

Valvoline – DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (Part No.798153)

Yukon Gear – Redline Synthetic "Shock Proof" Oil With Positraction Additive – 4 Quarts (Part No.15005)

Yukon Gear – Redline Synthetic "Shock Proof" Oil – 3 Quarts (Part No.15000)

Yukon Gear – Redline Synthetic "Shock Proof" Oil – 4 Quarts (Part No.15004)

National – Multi-Purpose Bearing (Part No.A-36)

National – Multi-Purpose Bearing (Part No.A-60)

FAG US – Cone (Part No.KNP343847)

FAG US – Bearing – DGBB (Deep Groove Ball Bearing) (Part No.6208-C3)

FAG US – Bearing – TRB (Tapered Roller Bearing) (Part No.KT11)

Yukon Gear – Cross Pin Bolt With 5/16 X 18 Thread For 10.25" Ford (Part No.33241)

FAG US – Cup (Part No.M88010)

FAG US – Cup (Part No.LM501310)

National – Bearing Race (Part No.JL69310)

Yukon Gear – Cross Pin Bolt (Part No.33067)

Dorman – Differential Cover (Part No.697-705)

Dorman – Differential Cover (Part No.697-702)

ATP – DIFF COVER KIT (Part No.111103)

Yukon Gear – Steel Cover For Ford 8.8" (Part No.32328)

Yukon Gear – Chrome Cover For 8.8" Ford (Part No.32009)

Yukon Gear – Chrome Cover For 9.75" Ford (Part No.32010)

Yukon Gear – 8.8" Ford Low Profile Ta HD Aluminum Rear Cover (Part No.32114)

ATP – DIFF COVER KIT (Part No.111106)

Yukon Gear – 9.75" Ford Ta HD Aluminum Cover (Part No.32115)

B & M – Rear End Cover 1 EA B&M (Part No.40297)

Dorman – Nodular Iron Differential Cover Assembly (Part No.697-734)

Yukon Gear – Steel Cover For Ford 9.75" (Part No.32329)

Felpro – Axle Housing Cover Gasket Irregular Shaped 12 Bolt Hole Gasket (Part No.RDS 55476)

Felpro – Axle Housing Cover Gasket Rectangular Shaped, 10 Bolt Hole Gasket (Part No.RDS 55341)

Mr. Gasket – Differential Gasket (Part No.142)

Yukon Gear – 8.8" Ford Cover Gasket (Part No.23011)

Driveworks – Oil Seal (Part No.S-3604)

Yukon Gear – Pinion Seal For 10.25" Ford (Part No.30069)

FAG US – Shaft Seal (Part No.SS2852)

FAG US – Shaft Seal (Part No.SS2865)

Yukon Gear – Pinion Seal For 7.5", 8.8", And 9.75" Ford, And Also 1985-’86 9" Ford (Part No.30037)