1999 Toyota 4Runner Differentials

Keep Your 1999 Toyota 4Runner in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1999 Toyota 4Runner looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Oil, Differential Covers, and Differential Pinion 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 Differentials from Trusted Brands

Looking for a reliable Differential? We’ve got you covered with options from brands you know and trust like FELPRO, National, and Royal Purple. For example, FELPRO Differentials start at just $8.99 with an average 4.6 star rating. National and Royal Purple offer similar pricing and quality, backed by strong customer feedback. With over 1,176 reviews and a solid 4 star average, you can shop with confidence knowing other Toyota 4Runner owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1999 Toyota 4Runner Differential at Advance Auto Parts is around $216.02, with a range that starts at $5.99 and goes up to $883.99. With 132 options in stock from 13 trusted brands, finding the right fit is easy. Popular picks like High Performance 5W-30 Synthetic Engine Oil, Better Wear Protection, 5 Quart, DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart, and DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart 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 Toyota 4Runner in peak condition, inside and out.

Essential 1999 Toyota 4Runner Differentials

Yukon Gear – Crush Sleeve (Part No.33101)

Crush Sleeve

from

$13.99
Crush Sleeve for GM 55-62 car & truck and Toyota 8″. 2.510″ long.

Product Features:
  • Crush sleeve for 1955-1962 GM passenger car and Toyota 8″ with 4 cylinder engine
  • 2.510″ tall
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Yukon Gear – Yoke For Toyota V6 Rear With 29 Spline Pinion, With Pinion Seal & Pinion Nut (Part No.41212)

Yoke For Toyota V6 Rear With 29 Spline Pinion, With Pinion Seal & Pinion Nut

from

$144.99
Product Features:
  • Conversion kit
  • Fits Toyota V6 rear with 29 spline pinion
  • Includes yoke , pinion seal, and pinion nut
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Yukon Gear – Carrier Shim Kit For Toyota 7.5" (Part No.55038)

Carrier Shim Kit For Toyota 7.5"

from

$101.99
7.5″ V6 & 4cyl side shim kit (incl. 7 shims).

Product Features:
  • Carrier shim kit
  • Fits Toyota 7.5″
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Yukon Gear – Ring Gear Bolt For Toyota T100, Tacoma & 8" IFS Front (Part No.33059)

Ring Gear Bolt For Toyota T100, Tacoma & 8" IFS Front

from

$15.99
Ring Gear bolt for Toyota T100, Tacoma & 8″ IFS front. 12mm x 1.0.

Product Features:
  • Ring gear bolt for Toyota T100 and Tacoma rear without factory locking differential and Toyota Clamshell front
  • 12mm x 1.0
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Yukon Gear – Zip Locker Bulkhead Quick-Disconnect Fitting (Part No.34038)

Zip Locker Bulkhead Quick-Disconnect Fitting

from

$18.99
Product Features:
  • Bulkhead quit connect fitting
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Valvoline – DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart (Part No.822405)

DEXRON - VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart

from

$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
See More

Yukon Gear – Differential Parts K (Part No.12087)

Differential Parts K

from

$73.99
Differential Parts K

Yukon Gear – Toyota Landcruiser Pinion Nut, Coarse Spline (Part No.33158)

Toyota Landcruiser Pinion Nut, Coarse Spline

from

$15.99
Toyota Landcruiser pinion nut, coarse spline, LARGE. 22mm x 1.5mm.

Product Features:
  • Pinion nut
  • Fits Toyota Landcruiser with 10 spline pinion
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National – Multi-Purpose Bearing (Part No.30306)

Multi-Purpose Bearing

from

$51.99
Product Features:
  • 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
See More

Yukon Gear – High Performance Ring & Pinion Gear Set For Toyota 8" In A 5.29 Ratio (Part No.24647)

High Performance Ring & Pinion Gear Set For Toyota 8" In A 5.29 Ratio

from

$404.99
Yukon Ring & Pinion sets give you the confidence of knowing you’re running gears designed for the harshest of conditions. Whether it’s on the street, off-road, or at the track; Yukon ring & pinion sets deliver unrivaled performance & quality. Yukon uses the latest designs and manufacturing technologies to provide a quiet running gear that is strong and easy to set up. All Yukon ring & pinion sets come standard with a one-year warranty.

Product Features:
  • Fits 1979-1985 Toyota Pickup and 4Runner and 1975-1990 Landcruiser
  • 5.27 ratio
  • 29 spline pinion
  • Includes conversion yoke, seal, and pinion nut
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Yukon Gear – Bearing Race Driver (Part No.56004)

Bearing Race Driver

from

$99.99
Bearing race driver for Toyota front V6, Landcruiser reverse rotation, and Tacoma with locker (TOY30025). No return.

Product Features:
  • Bearing race driver
  • Fits 30025 race
  • All steel construction
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Yukon Gear – V6 & L/C Reverse Drop Out Side Adjusters (Part No.33365)

V6 & L/C Reverse Drop Out Side Adjusters

from

$38.99
Product Features:
  • Side adjuster
  • Fits Toyota V6 and Landcruiser reverse rotation front
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USA Standard Gear – Ring & Pinion Gear Set For Toyota V6 In A 4.88 Ratio, 29 Spline Pinion (Part No.36307)

Ring & Pinion Gear Set For Toyota V6 In A 4.88 Ratio, 29 Spline Pinion

from

$355.99
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 Toyota V6 rear
  • 8.125″ ring gear diameter
  • 29 spline pinion
  • 10 ring gear bolts
  • 4.88 ratio
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National – Multi-Purpose Seal (Part No.710697)

Multi-Purpose Seal

from

$18.99
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:
  • Design type: spring loaded; multi-lip
  • Temperature range: -20 Deg. F to 300 Deg. F / -29 Deg. C to 49 Deg. C
  • Resistance to EP lubricants
  • Low swell in hydrocarbon fluids
  • Delivers quality and reliable performance for every type of repair
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Yukon Gear – Differential (Part No.26051)

Differential

from

$782.99
Differential

Yukon Gear – Differential Pinion (Part No.13111)

Differential Pinion

from

$289.99
Differential Pinion

Yukon Gear – Master Overhaul Kit For Toyota 7.5" IFS Differential For T100, Tacoma, And Tundra (Part No.14115)

Master Overhaul Kit For Toyota 7.5" IFS Differential For T100, Tacoma, And Tundra

from

$379.99
Yukon Master Overhaul kits give you all the high quality parts you need to start & finish every differential job. Yukon offers more tailor-made kits than any other manufacturer in the industry to meet your specific installation needs. This kit uses premium bearings and races along with high quality seals and small parts. Included in this kit are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve (if applicable), Thread locking compound, and marking compound with brush. Yukon’s Master Overhaul kits are the most comprehensive and complete kits on the market. They do extensive research to ensure that every kit is specially tailored to your application. No side shims.

Product Features:
  • Fits reverse rotation Toyota 7.5″
  • Included are Timken bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve, thread locker, marking compound with brush, and silicone.
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USA Standard Gear – Spartan Locker For Toyota 7.5" With 27 Spline Axles, Includes Heavy-Duty Cross Pin Shaft (Part No.17014)

Spartan Locker For Toyota 7.5" With 27 Spline Axles, Includes Heavy-Duty Cross Pin Shaft

from

$669.99
The Spartan Locker, by USA Standard Gear, provides reliable traction at a low cost. Give your vehicle great traction and save some cash. Choose a Spartan Locker for better traction. The Spartan locker by USA standard gear is a mechanical locker that replaces the spiders in a standard case. The Spartan locker’s design does not use the thrust washers and has a revolutionary spring and pin design that makes installation a snap! The couplers and drivers are made from 9310 steel, for added strength. Each Spartan locker carries a one year warranty against defect.

Product Features:
  • Fits Toyota 7.5″
  • Made from 9310 steel for added strength
  • Replaces the spiders in a standard carrier case
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Dorman – Pre-Pressed Axle (OE Fix) (Part No.926-137)

Pre-Pressed Axle (OE Fix)

from

$869.99
Replacing a worn wheel bearing usually requires a time-consuming procedure with a shop press. This Dorman OE FIX loaded axle includes all critical components already assembled for a fast, simple, safe install.

Product Features:
  • Easier installation – this loaded axle assembly includes a new axle shaft, wheel bearing, hub and backing plate pre-assembled and ready to install right out of the box
  • Time saver – eliminates frustrating, unpredictable work required to replace bearings without damaging other components
  • Simpler solution – eliminates the need to use potentially dangerous shop press to perform complete bearing repair
  • Quality tested – this part has undergone try-on, corrosion and material testing to ensure a quality fit and long service life
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Yukon Gear – V6 Side Gear Thrust Washer (Part No.33391)

V6 Side Gear Thrust Washer

from

$23.99
V6 side gear Thrust washer.

Product Features:
  • Side gear thrust washer
  • Fits Toyota V6
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AISIN – Differential Lock Shift Actuator Assembly (Part No.SAT-009)

Differential Lock Shift Actuator Assembly

from

$726.99
OE Manufactured Direct Replacement Shift and Lock Actuators Control the Vehicle 2WD to 4WD, 4WD High to Low, and/or Differential Lock Function.

Product Features:
  • Actuators control the vehicle 2WD to 4WD, 4WD High to Low, and/or differential lock function.
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FAG US – Shaft Seal (Part No.SS2530)

Shaft Seal

from

$21.99
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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Yukon Gear – Pinion Depth Shim Kit For Toyota8", GM 7.5", 8.2" & 12 Bolt Truck (Part No.55064)

Pinion Depth Shim Kit For Toyota8", GM 7.5", 8.2" & 12 Bolt Truck

from

$39.99
8″ Toyota, 7.5″ GM, 8.2″ GM, 12T, pinion shim set, & Mazda truck.

Product Features:
  • Pinion depth shim kit for Toyota 7.5″, 8″ and V6
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National – Shaft Repair Sleeve (Part No.99114)

Shaft Repair Sleeve

from

$27.99
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
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Yukon Gear – Oil Baffle (Part No.33007)

Oil Baffle

from

$7.99
Oil baffle for Toyota Landcruiser reverse rotation front, 8″ IFS front & TV6/Tacoma rear with factory locker.

Product Features:
  • Oil baffle
  • Fits Toyota Landcruiser reverse rotation front
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Yukon Gear – V6 Standard Open Pinion Gear Thrust Washer (Part No.33393)

V6 Standard Open Pinion Gear Thrust Washer

from

$10.99
V6 standard Open pinion gear Thrust washer.

Product Features:
  • Pinion gear thrust washer
  • Fits Toyota V6
See More

Yukon Gear – Toyota 8" & V6 Pinion Nut Washer (Part No.33168)

Toyota 8" & V6 Pinion Nut Washer

from

$16.99
Toyota 8″ & V6 pinion nut washer.

Product Features:
  • Pinion nut for Toyota 8″ and V6
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Yukon Gear – Seal Housing For Toyota Zip Locker (Part No.34011)

Seal Housing For Toyota Zip Locker

from

$78.99
Product Features:
  • Seal housing for Toyota 8″ and V6
  • Includes o-rings
See More

Most Popular Differential Oil for 1999 Toyota 4Runners

Enhance your 1999 Toyota 4Runner with one of the 9 Differential Oil we have in stock, starting at just $10.29.

Mobil 1 – 75W-90 Full Synthetic Gear Lubricant, Extends Gear Life, 1 Quart (Part No.26101)

75W-90 Full Synthetic Gear Lubricant, Extends Gear Life, 1 Quart

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

High Performance 5W-30 Synthetic Engine Oil, Better Wear Protection, 5 Quart

from

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

DEXRON - VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart

from

$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
See More

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

DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart

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:
  • 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
See More

Valvoline – Flex Fill Transmission & Differential Gear Oil: Full Synthetic 75W-90, 1 Quart (Part No.889785)

Flex Fill Transmission & Differential Gear Oil: Full Synthetic 75W-90, 1 Quart

from

$18.99
We’ve squeezed innovation into every ounce of Valvoline FlexFill SAE 75W-90 Full Synthetic Gear Oil, the ultimate gear protection in hypoid rear differentials and non-synchronized manual transmissions. Our unique new flexible pouch makes getting into the tightest places to lubricate gears easier than ever and with less waste. The superior detergent package-based formulation contains fully synthetic basestocks and special additives that help protect parts from rust and corrosion while providing 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, wear resistance additives that assist in protecting gear teeth, a limited slip additive for optimal clutch pack performance, and an anti-foaming agent for better lubrication and service life. Valvoline FlexFill SAE 75W-90 Full Synthetic Gear Oil is recommended for use in axle applications requiring factory-fill or drain-and-fill levels for limited slip performance.

Product Features:
  • FLEXIBLE POUCH FOR EASIER USE WITH LESS WASTE in tight, hard to reach undercarriage situations.
  • EXCEPTIONAL HIGH AND LOW TEMPERATURE PROTECTION ranging from -30F to 300F degrees for dependable coverage year-round
  • REDUCES CHATTERING AND PROTECTS GEAR TEETH from oxidation, rust, and wear
  • 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 or MT-1 fluid
  • MEETS OR EXCEEDS PERFORMANCE REQUIREMENTS for Mack GO-H and GO-J; API GL-5 and API MT-1; MIL-PRF-2105E; and SAE J2360
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Yukon Gear – Redline Synthetic "Shock Proof" Oil With Positraction Additive – 4 Quarts (Part No.15005)

Redline Synthetic "Shock Proof" Oil With Positraction Additive - 4 Quarts

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

Redline Synthetic "Shock Proof" Oil - 3 Quarts

from

$99.99
Redline Synthetic “Shock Proof” Oil. 3 Quarts.

Product Features:
  • Includes three quarts of Redline Shockproof oil
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Yukon Gear – Redline Synthetic "Shock Proof" Oil – 4 Quarts (Part No.15004)

Redline Synthetic "Shock Proof" Oil - 4 Quarts

from

$137.99
Redline Synthetic “Shock Proof” Oil. 4 Quarts.

Product Features:
  • Includes four quarts of Redline Shockproof oil
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Idemitsu – Type HP Automatic Transmission Fluid , 1 Quart (Part No.10107-042F)

Type HP Automatic Transmission Fluid , 1 Quart

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:
  • 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
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Best-Selling 1999 Toyota 4Runner Differential Cover

Upgrade your 4Runner with our best-selling Differential Cover.

Dorman – Differential Cover (OE Fix) (Part No.926-993)

Differential Cover (OE Fix)

from

$78.99
When the thin-gauge steel corrodes on 4Runner and Tacoma truck rear differential covers, the typical solution has been to replace the entire axle. This Dorman OE FIX weld-on solution allows direct replacement of only the failed cover.

Product Features:
  • Direct replacement – this weld-on differential cover directly replaces a corroded original cover on certain Toyota 4Runner and Tacoma trucks
  • Cost-effective repair – rather than buy a new axle, cut off the old cover and weld on this new one
  • Greater durability – constructed from heavier-gauge stamped steel than the original cover
  • Ready to install – pre-primed in weldable primer for a clean installation
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Top-Quality Differential Pinion Seals for 1999 Toyota 4Runners

Choose a high-quality OEM or aftermarket Differential Pinion Seal for Toyota 4Runners and enjoy top-notch performance from $13.49.

Motive Gear – Pinion Seal (Part No.1177)

Pinion Seal

from

$13.49
Motive Gear offers some of the toughest drive train components on the market today. If you are looking for the largest line of performance ring and pinion gear options available with gear sets in a wide range of ratios for nearly every application, both on and off-road, check out Motive Gear. Motive Gear products can be found in the winner’s circle at racing events worldwide. The superior quality of Motive Gear components is the result of years of racing development, outstanding design and state-of-the-art manufacturing methods. Extensive testing is performed on all products by our in-house engineers.
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Yukon Gear – Pinion Seal For Toyota 7.5", 8", V6 & T100 (Part No.30005)

Pinion Seal For Toyota 7.5", 8", V6 & T100

from

$19.99
Pinion seal for 7.5″, 8″, V6, and T100 and Tacoma with lockers.Yukon Mighty seal.

Product Features:
  • Pinion seal
  • Fits Toyota 7.5″, 8″ with 4 cylinder engine, V6, Landcruiser and Tacoma/T100 with factory locking differential
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National – Multi Purpose Seal (Part No.710823)

Multi Purpose Seal

from

$13.79
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:
  • Low swell in hydrocarbon fluids
  • Design type: spring loaded; multi-lip
  • Provides good low temperature capability
  • Temperature range: -40°F to 225°F; -40°C to 107°C
  • Delivers quality and reliable performance for every type of repair
See More

Top Picks for 1999 Toyota 4Runner Differential Bearings

Invest in one of our 2 durable Differential Bearings for your 1999 Toyota, knowing you’re getting trusted brands and expert craftsmanship.

National – Multi-Purpose Bearing (Part No.KC-11445-Y)

Multi-Purpose Bearing

from

$69.99
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
See More

FAG US – Cup (Part No.LM501310)

Cup

from

$9.99
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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Differential Axle Shafts for 1999 Toyota 4Runners

Make a smart move for your 1999 Toyota 4Runner with products all priced from $274.99 to $469.99.

Yukon Gear – Rear Axle For ’95-’00 Tacoma & ’96-’00 4Runner, Non-ABS (Part No.21739)

Rear Axle For '95-'00 Tacoma & '96-'00 4Runner, Non-ABS

from

$469.99
Product Features:
  • 30 spline
  • 6 lug
  • 29.25″ long
  • Fits 1995-2000 Tacoma and 1996-2000 4Runner
  • Non ABS applications only
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Yukon Gear – Axle Shaft For 95-00 Tacoma & 96-00 4Runner, 29-1/4", 30 Spline (Part No.21660)

Axle Shaft For 95-00 Tacoma & 96-00 4Runner, 29-1/4", 30 Spline

from

$289.99
95-00 Tacoma & 96-00 4RUNNER 29-1/4″ 30spline axle shaft.

Product Features:
  • 30 spline
  • 6 lug
  • 29.25″ long
  • Fits 1995-2004 Tacoma and 1996-2002 4Runner
  • ABS applications only
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Yukon Gear – T8 30Spline Axle (24.64" – 29.08" Cut2Lth) 4340 – 106Mm Brake Pilot (Part No.21724)

T8 30Spline Axle (24.64" - 29.08" Cut2Lth) 4340 - 106Mm Brake Pilot

from

$274.99
T8 30spline axle ’86-00 (24.64″ – 29.08″ CUT2LTH) 4340.

Product Features:
  • Fits 1979-2000 Toyota 8″ and V6 rear
  • 4340 Chromoly
  • 30 spline
  • 29 1/8″ long
  • Cut to length design fits 26.62″-29.26″ applications
  • 106mm brake pilot
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Top-Rated Differential Brands For Your 1999 Toyota 4Runner

When it comes to finding the perfect Differential for your 1999 Toyota 4Runner, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 13 trusted brands. We carry the most popular Differential brands including Royal Purple, FELPRO, and National, and more, all known for their exceptional customer ratings (average brand rating of 4.8 stars) and competitive prices, as low as $8.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1999 Toyota 4Runner, providing peace of mind with parts that meet or exceed OEM standards.

Popular Royal Purple 1999 Toyota 4Runner Differentials

If you’re looking for a top-quality Differential for your 1999 Toyota 4Runner, Advance Auto Parts has exactly what you need with our selection of Royal Purple Differentials. We have 1 Royal Purple Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $41.99, you’ll find the perfect Differential for your needs and budget. Royal Purple Differentials for the 1999 Toyota 4Runner come highly rated, with over 133 customer reviews and an impressive average rating of 4.8 stars. Choosing a Royal Purple Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.

Top-Quality FELPRO 1999 Toyota 4Runner Differentials

For those in search of a high-quality Differential for their 1999 Toyota 4Runner, Advance Auto Parts offers a great selection of FELPRO Differentials. With 1 FELPRO 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 $8.99, giving you a range of options to suit your budget. Backed by over 1 customer ratings and an average rating of 4.6 stars, FELPRO Differentials provide both reliability and excellent performance. Choosing a FELPRO Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.

FAQs for 1999 Toyota 4Runner Differentials

What are the best-selling Differentials for 1999 Toyota 4Runners?

Out of 132 Differentials that fit 1999 Toyota 4Runners, the following parts are the top sellers:

What’s the price range for 1999 Toyota 4Runner Differentials?

The prices of Differentials for the 1999 Toyota 4Runner range from $5.99 up to $883.99 for the most premium parts.

What is the average price of a Differential for a 1999 Toyota 4Runner?

The average price for Differentials for the 1999 Toyota 4Runner is $216.02. 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 Toyota 4Runner model years?

Yes, we carry Differentials for 39 model years of Toyota 4Runners between 1984 and 2024. The following model years are the most popular for Differential purchases: 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015, and 2014.

What are the cheapest Differentials for my 1999 Toyota 4Runner?

The cheapest 1999 Toyota 4Runner Differentials we carry are:

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

Yes. We stock Differentials for 8 other popular 1999 Toyota models. Some of the most popular are 1999 Corolla Differentials, 1999 Camry Differentials, 1999 Land Cruiser Differentials, 1999 Celica Differentials, and 1999 Avalon Differentials.

What are the top-rated Differentials that fit the 1999 Toyota 4Runner?

The one 1999 Toyota 4Runner Differential we have in stock is the Pinion Nut. It costs $5.99.

What types of Differentials do you sell for my 1999 Toyota 4Runner?

As of 11/2/25, these are some of the most in-demand types of Differentials for a 1999 Toyota 4Runner:

Can I get help with 1999 Toyota 4Runner Differential orders?

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

What is your return policy for Toyota 4Runner Differentials?

Advance Auto Parts keeps returns simple. For new Toyota 4Runner Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.