2021 Toyota 4Runner Differentials

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Keep Your 2021 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 2021 Toyota 4Runner looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Axle Shafts, Differential Pinion Shims, and Differential Bearing Kits. 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 Valvoline. For example, Valvoline Differentials start at just $13.99 with an average 4.8 star rating. With over 1,816 reviews and a solid 5 star average, you can shop with confidence knowing other Toyota 4Runner owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2021 Toyota 4Runner Differential at Advance Auto Parts is around $456.58, with a range that starts at $13.49 and goes up to $869.99. With 16 options in stock from 6 trusted brands, finding the right fit is easy. Popular picks like Differential Pinion Shim Kit, Bearing Install Kit For New Toyota Clamshell Design Front Reverse Rotation Differential, and Master Overhaul Kit For New Toyota Clamshell Design Front Reverse Rotation Differential start at just $13.49 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 Drive Shafts and Axles. At Advance Auto Parts, we’re here to help you keep your 2021 Toyota 4Runner in peak condition, inside and out.

Essential 2021 Toyota 4Runner Differentials

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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Valvoline – High Performance Transmission & Differential Gear Oil: Conventional 80W-90, 1 Quart (Part No.VV831)

High Performance Transmission & Differential Gear Oil: Conventional 80W-90, 1 Quart

from

$12.99
Valvoline High Performance Gear Oil is an extreme pressure gear lubricant formulated with quality base oils and superior additives that helps protect against severe temperatures, shock loads, scuffing, scouring, corrosion and pitting in high speed, high load, high torque and high horsepower conditions.

Product Features:
  • Formulated for reliable gear protection
  • Protects against severe temperatures to help extend service life
  • Formulated with extreme-pressure additives to minimize gear wear from shock loads
  • Helps protect against gear wear from scuffing, scouring, corrosion and pitting
  • Recommended for conventional hypoid differentials and non-synchronized manual transmissions in passenger cars, light trucks, sport utility vehicles, vans and heavy-duty trucks where an API-GL5 or GL-4 fluid is specified
  • PLEASE NOTE: Valvoline recommends SynPower Full Synthetic Gear Oil for limited slip differentials
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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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Yukon Gear – 3 Qt – Penzoil 80W90 Conventional Gear Oil (Part No.15002)

3 Qt - Penzoil 80W90 Conventional Gear Oil

from

$44.99
3 Qt. Penzoil 80W90 conventional gear Oil.

Product Features:
  • Includes three quarts of conventional oil
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USA Standard Gear – Master Overhaul Kit for Toyota 7.5" IFS Differential for T100, Tacoma, and Tundra (Part No.37109)

Master Overhaul Kit for Toyota 7.5" IFS Differential for T100, Tacoma, and Tundra

from

$384.99
USA Standard Master Overhaul kits let you finish your install with confidence. This kit uses Koyo bearings and races. Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve (if applicable), oil baffles and slingers (if applicable), threading locking compound, marking compound with brush and gasket.

Product Features:
  • Fits reverse rotation Toyota 7.5″ front
  • Uses Koyo bearings and races
  • Included are carrier bearings and races, pinion bearings and races, pinion seal, axle seals, complete shim kit, ring gear bolts, pinion nut, crush sleeve, oil baffles and slingers, thread locker, marking compound with brush and silicone.
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USA Standard Gear – Master Overhaul Kit for the Toyota V6 & Turbo 4 Differential, ’02 & down (Part No.37071)

Master Overhaul Kit for the Toyota V6 & Turbo 4 Differential, '02 & down

from

$519.99
USA Standard Master Overhaul kits let you finish your install with confidence. This kit uses Koyo bearings and races. Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve (if applicable), oil baffles and slingers (if applicable), threading locking compound, marking compound with brush and gasket. This kit fits applications with a 27 spline pinion.

Product Features:
  • Fits Toyota V6 rear
  • Uses Koyo bearings and races
  • Included are carrier 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 gasket.
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Yukon Gear – Minor Install Kit For Toyota ’85 And Older Or Aftermarket 8" Differential (Part No.12072)

Minor Install Kit For Toyota '85 And Older Or Aftermarket 8" Differential

from

$51.99
Yukon Minimum installation kits are a low cost solution for gear changes in newer vehicles where the bearings can be reused. This kit uses all high quality components to ensure a smooth set up. kit includes a pinion seal, crush sleeve (if applicable), complete shim kit, marking compound and brush.

Product Features:
  • Fits Toyota 8″ with 4 cylinder engine
  • Included are a pinion seal, crush sleeve , complete shim kit, marking compound and brush.
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USA Standard Gear – Master Overhaul Kit for Toyota 7.5" IFS Differential, V6 (Part No.37110)

Master Overhaul Kit for Toyota 7.5" IFS Differential, V6

from

$344.99
USA Standard Master Overhaul kits let you finish your install with confidence. This kit uses Koyo bearings and races. Included are carrier bearings and races, pinion bearings and races, pinion seal, pinion shim kit, ring gear bolts, pinion nut, crush sleeve (if applicable), oil baffles and slingers (if applicable), threading locking compound, marking compound with brush and gasket. .

Product Features:
  • Fits reverse rotation Toyota 7.5″
  • Uses Koyo bearings and races
  • Included are carrier 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.
See More

Motive Gear – Differential Pinion Shim Kit (Part No.1109)

Differential Pinion Shim Kit

from

$13.49


Product Features:
  • KIT SHIM TOYO TRK 79-92 REAR/89-92 FRONT
See More

Yukon Gear – Solid Preload Kit For Toyota Landcruiser (Part No.55065)

Solid Preload Kit For Toyota Landcruiser

from

$30.99
Preload shim kit for Toyota Landcruiser. Also compatible with Toyota 8″ 4 cylinder & V6 with a solid spacer.

Product Features:
  • Preload shim kit
  • Fits 9.5″ Toyota Landcruiser
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Yukon Gear – Replacement Pinion Depth Shims For Dana 60, 61 & D70-U (Part No.55012)

Replacement Pinion Depth Shims For Dana 60, 61 & D70-U

from

$17.99
Product Features:
  • Pinion depth shims for Dana Spicer 60 and 70U
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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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USA Standard Gear – Ring & Pinion Gear Set For Toyota V6 In A 5.29 Ratio (Part No.36321)

Ring & Pinion Gear Set For Toyota V6 In A 5.29 Ratio

from

$364.99
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.
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USA Standard Gear – Ring & Pinion Gear Set For Toyota 8" In A 4.11 Ratio (Part No.36287)

Ring & Pinion Gear Set For Toyota 8" In A 4.11 Ratio

from

$274.99
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 Toyota 8″
  • 8.00″ ring gear diameter
  • 29 spline pinion
  • 10 ring gear bolts
  • 4.11 ratio
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Yukon Gear – High Performance Ring & Pinion Gear Set For Toyota 8" In A 4.88 Ratio (Part No.24623)

High Performance Ring & Pinion Gear Set For Toyota 8" In A 4.88 Ratio

from

$394.99
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
  • 4.88 ratio
  • 29 spline pinion
See More

Yukon Gear – High Performance Ring & Pinion Gear Set For Toyota V6 In A 4.88 Ratio (Part No.24596)

High Performance Ring & Pinion Gear Set For Toyota V6 In A 4.88 Ratio

from

$384.99
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. Models w/ factory 3.07 & 4.88’s have a different offset and will need a new dropout when changing ratio.

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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USA Standard Gear – Ring & Pinion Gear Set For Toyota V6 In A 4.11 Ratio (Part No.36320)

Ring & Pinion Gear Set For Toyota V6 In A 4.11 Ratio

from

$379.99
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.
See More

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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Yukon Gear – Axle For ’79-’85 Toyota Pickup & 4Runner (Part No.21658)

Axle For '79-'85 Toyota Pickup & 4Runner

from

$294.99
Yukon axle for ’79-’85 Toyota Pickup & 4Runner. 26 3/4″ long, 91mm brake pilot.

Product Features:
  • 29 spline
  • 26.75″ long
  • 91 MM brake pilot
  • Fits 1979-1985 Toyota Pickup and 4Runner
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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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Dorman – Pre-Pressed Axle (OE Fix) (Part No.926-142)

Pre-Pressed Axle (OE Fix)

from

$777.99
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
See More

Dorman – Axle Shaft Kit for Toyota Pickup (Part No.630-335)

Axle Shaft Kit for Toyota Pickup

from

$395.99
This axle shaft directly replaces the original equipment on certain vehicles, complete with all necessary application-specific installation components.

Product Features:
  • Direct replacement – this axle shaft replaces the original equipment on specific vehicle years, makes and models
  • Complete kit – each shaft includes critical installation hardware and components needed for specific vehicle applications
  • Durable construction – designed to rigorous standards and tested to ensure performance
  • Trustworthy solution – backed by team of engineers and quality control specialists in the United States
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Motive Gear – Differential Bearing Kit – Timken (Part No.R11RT)

Differential Bearing Kit - Timken

from

$149.99
Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

Product Features:
  • TOYOTA 8″ BEARING AND SEAL KIT TIMKEN
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Yukon Gear – Bearing Kit For ’86 And Newer Toyota 8" Differential With OEM Ring & Pinion (Part No.11089)

Bearing Kit For '86 And Newer Toyota 8" Differential With OEM Ring & Pinion

from

$281.99
Yukon Bearing installation kits are perfect for shops & builders who have shims on the shelf and are looking to save cost over a Master Overhaul kit. This kit uses Timken bearings and races along with all high quality small parts. kit includes carrier bearings and races, pinion bearings and races, pinion seal, crush sleeve (if applicable), marking compound and 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 ring & pinion set.

Product Features:
  • Fits Toyota 8″ and 4 cylinder engine, 1986 and up with OEM ring and pinion set
  • Included are carrier bearings and races, pinion bearings and races, pinion seal, crush sleeve, marking compound and brush.
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Motive Gear – Differential Bearing Kit – Timken (Part No.R11RV6T)

Differential Bearing Kit - Timken

from

$209.99
Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

Product Features:
  • TOYOTA 8″ V6 MASTER KIT
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Motive Gear – Differential Master Bearing Kit – Koyo (Part No.R11RMK)

Differential Master Bearing Kit - Koyo

from

$155.99
Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

Product Features:
  • TOYOTA 8″ BRNG & SEAL MASTER KIT
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Yukon Gear – Master Overhaul Kit For Toyota V6, ’03 & Up (Part No.14212)

Master Overhaul Kit For Toyota V6, '03 & Up

from

$491.99
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, marking compound with brush, and gasket. 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. This kit fits applications with a 29 spline pinion.

Product Features:
  • Fits Toyota V6 rear
  • 29 spline only
  • Included are KOYO 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 , oil baffles and slingers , thread locker, marking compound with brush, and gasket.
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Yukon Gear – Master Overhaul Kit For Toyota V6, ’03 & Up (Part No.14210)

Master Overhaul Kit For Toyota V6, '03 & Up

from

$459.99
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 a solid spacer to replace the crush sleeve. 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, marking compound with brush, and gasket. 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. This kit fits applications with a 29 spline pinion.

Product Features:
  • Fits Toyota V6 rear
  • Included are KOYO 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 eliminator, thread locker, marking compound with brush, and gasket.
See More

Most Popular Differential Axle Shafts for 2021 Toyota 4Runners

Enhance your 2021 Toyota 4Runner with one of the 2 Differential Axle Shafts we have in stock, starting at just $868.99.

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
See More

Dorman – Pre-Pressed Axle (OE Fix) (Part No.926-138)

Pre-Pressed Axle (OE Fix)

from

$868.99
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
See More

Best-Selling 2021 Toyota 4Runner Differential Pinion Shim

Upgrade your 4Runner with our best-selling Differential Pinion Shim.

Motive Gear – Differential Pinion Shim Kit (Part No.1109)

Differential Pinion Shim Kit

from

$13.49


Product Features:
  • KIT SHIM TOYO TRK 79-92 REAR/89-92 FRONT
See More

Top-Quality Differential Bearing Kits for 2021 Toyota 4Runners

Choose a high-quality OEM or aftermarket Differential Bearing Kit for Toyota 4Runners and enjoy top-notch performance from $569.99.

Yukon Gear – Master Overhaul Kit For New Toyota Clamshell Design Front Reverse Rotation Differential (Part No.14130)

Master Overhaul Kit For New Toyota Clamshell Design Front Reverse Rotation Differential

from

$649.99
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), oil baffles and slingers (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.

Product Features:
  • Fits Toyota 8″ clamshell front
  • 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.
See More

Yukon Gear – Bearing Install Kit For New Toyota Clamshell Design Front Reverse Rotation Differential (Part No.11108)

Bearing Install Kit For New Toyota Clamshell Design Front Reverse Rotation Differential

from

$569.99
Yukon Bearing installation kits are perfect for shops & builders who have shims on the shelf and are looking to save cost over a Master Overhaul kit. This kit uses high quality bearings and races along with all high quality small parts. kit includes carrier bearings and races, pinion bearings and races, pinion seal, crush sleeve (if applicable), oil baffles and slingers (if applicable), marking compound and 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 ring & pinion set.

Product Features:
  • Fits Toyota 8″ clamshell front
  • Reverse rotation only
  • Included are carrier bearings and races, pinion bearings and races, pinion seal, crush sleeve, marking compound and brush.
See More

Top Picks for 2021 Toyota 4Runner Differential Ring and Pinions

Invest in one of our 7 durable Differential Ring and Pinions for your 2021 Toyota, knowing you’re getting trusted brands and expert craftsmanship.

Yukon Gear – Ring and Pinion Kit (Part No.24554)

Ring and Pinion Kit

from

$569.99
Ring and Pinion Kit

Yukon Gear – Ring and Pinion Kit (Part No.24680)

Ring and Pinion Kit

from

$544.99
Ring and Pinion Kit

Yukon Gear – Ring and Pinion Kit (Part No.24681)

Ring and Pinion Kit

from

$544.99
Ring and Pinion Kit

Yukon Gear – High Performance Ring & Pinion Gear Set For Toyota FJ Cruiser Front, 4.56 Ratio, Thick (Part No.24635)

High Performance Ring & Pinion Gear Set For Toyota FJ Cruiser Front, 4.56 Ratio, Thick

from

$529.99
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.
See More

Yukon Gear – High Performance Ring & Pinion Gear Set For Toyota FJ Cruiser Front, 4.88 Ratio, Thick (Part No.24565)

High Performance Ring & Pinion Gear Set For Toyota FJ Cruiser Front, 4.88 Ratio, Thick

from

$524.99
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. This is a thick gear for a 3.73 & down carrier. 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 8″ Toyota clamshell front
  • 8.00″ ring gear diameter
  • 29 spline pinion
  • 10 ring gear bolts
  • 4.88 ratio
  • Thick gear for 3.73 and down carrier
See More

Yukon Gear – RngPnnKt (Part No.24677)

RngPnnKt

from

$468.99
RngPnnKt

Yukon Gear – RngPnnKt (Part No.24679)

RngPnnKt

from

$454.99
RngPnnKt

Top-Rated Differential Oil for 2021 Toyota 4Runners

Make a smart move for your 2021 Toyota 4Runner with products all priced from $13.99 to $35.99.

Valvoline – MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon (Part No.773775)

MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon

from

$35.99
Valvoline MaxLife Multi-Vehicle ATF is a full-synthetic formulation with advanced additives to prevent the major causes of transmission breakdown and help extend transmission life.  Developed to help prevent leaks, maximize transmission performance, reduce transmission wear, and maintain smooth shifting longer than conventional fluids. It is suitable for use in a broad range of ATF applications including most Ford, GM, Toyota, Honda, Nissan, Hyundai, BMW, Mercedes, Volvo, VW & Audi. Recommended for use in the following applications: GM DEXRON-II, DEXRON-III, DEXRON-VI, Ford MERCON LV, Toyota/Lexus Type T, T-II, T-IV, WS, Honda/Acura, ATF-Z1, Nissan/Infiniti Matic-D, Matic-J, Matric-K, Matic-S, Hyundai/Kia SP-II, SP-III, SP-IV, SPH-IV, BMW 7045E, ETL 8072B, LA2634, LT71141, Allison C-4, Mercedes Benz NAG-1, Volvo 1161521, 1161540, 97340, 1273.41, and VW/Audi G-052-025-A2, G-052-162-A1. For CVT applications Valvoline recommends Valvoline Full Synthetic CVT Fluid.

Product Features:
  • Formulated with full-synthetic base oils and long life friction modifiers to help improve smooth shifting, eliminate slippage and shudder, prevent clutch wear and improve drivability longer than conventional fluids
  • High-performance seal conditioners maintain and preserve the elasticity of seals to help prevent leaks in high mileage transmissions
  • 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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Valvoline – Import Multi-Vehicle Synthetic Automatic Transmission Fluid, 1 Quart (Part No.822389)

Import Multi-Vehicle Synthetic Automatic Transmission Fluid, 1 Quart

from

$13.99
Valvoline Import Multi-Vehicle Automatic Transmission Fluid is specifically formulated for use in most Toyota, Nissan, Honda and other imported vehicles. It is formulated with all synthetic base stocks and a proprietary additive system to ensure optimal transmission performance in a wide variety of vehicles. Valvoline Import Multi-Vehicle ATF can also be used in many domestic vehicles. It meets requirements of General Motors and Ford vehicles. Recommended for use in the following applications: Ford MERCON, GM DEXRON-II and DEXRON-III, BMW LT 71141 and ETL-7045E, Nissan/Infiniti Nissan ATF, Matic-D, Matic-K and Matic-J, Mitsubishi Diamond SP-II and SP-III, Subaru ATF-HP, Hyundai/ KIA SP-II and SP-III, Toyota/Lexus Type T, T-III and T-IV, Honda/Acura ATF-Z1 (except in CVTs), Mercedes Benz NAG1, Volvo passenger car (except AW-1), and Volkswagen/Audi TL52162. For CVT applications Valvoline recommends Valvoline Full Synthetic CVT Fluid.

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

Castrol – Transmax ATF/CVT Universal Transmission Fluid, Smooth Performance, 1 Gallon (Part No.15E0C8)

Transmax ATF/CVT Universal Transmission Fluid, Smooth Performance, 1 Gallon

from

$28.99
Castrol® Transmax® ATF/CVT Universal is a premium full-synthetic transmission fluid engineered for exceptional performance in both traditional step-shifting automatic transmissions and modern continuously variable transmissions (CVTs). Featuring Castrol Smooth Drive® Technology, it ensures enhanced friction durability for seamless gear shifts and superior high-temperature protection to resist oxidation. This advanced formulation offers unmatched protection against copper corrosion, extending the life of your transmission system. Its broad compatibility covers a wide range of ATF and CVT applications, including Dexron VI, Mercon LV, Toyota WS, Honda DW-1, Nissan Matic S, and many more, making it ideal for diverse vehicle types, including hybrids. Designed to improve workshop efficiency and simplify inventory management, this fluid is a versatile solution for professional mechanics and DIY enthusiasts alike. Packaged in a convenient 1-gallon size, it delivers outstanding value and reliability for maintaining optimal transmission performance.

Product Features:
  • Enhanced friction durability for smooth transmission performance
  • Superior high temperature protection to effectively resist oxidation
  • Unsurpassed protection against copper corrosion
  • Broad scope of vehicle applications improves workshop efficiency and inventory management
  • ATF Applications: Dexron VI (Dexron III, Dexron), Mercon LV (Mercon SP, Mercon V, Mercon), JASO 1A (03), JASO 1A LV (13), Toyota T IV, Toyota T III, Toyota WS, Honda/Acura DW 1/Z 1, Nissan Matic D, Matic J, Matic S, Hyundai/Kia SP IV, SP III
  • ATF Applications: Mazda ATF M-V, M-III, FZ, Mitsubishi SP IV, SP III, IIM, II, PA, J3, VW/Audi (6, 8 & 9 speed automatics), BMW/Mini (6, 8 and 9 speed automatics), Jaguar/Land Rover (6, 8 & 9 speed automatics), Porsche (6, 8 & 9 speed automatics)
  • ATF Applications: Volvo (6, 8 and 9 speed automatics), Volvo Transmission Oil 97342, AT102, Mercedes-Benz (7 and 9 speed automatics)
  • CVT Applications: Toyota CVT Fluid TC, Toyota CVT Fluid FE , Nissan CVT Fluid NS-1, Nissan CVT Fluid NS-2, Nissan CVT Fluid NS-3, Subaru i-CVT Fluid, Subaru i-CVT FG, Subaru Lineartronic High Torque Chain CVTF, Honda HCF-2
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Top-Rated Differential Brands For Your 2021 Toyota 4Runner

When it comes to finding the perfect Differential for your 2021 Toyota 4Runner, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 6 trusted brands. We carry the most popular Differential brands including Valvoline, and more, all known for their exceptional customer ratings (average brand rating of 4.8 stars) and competitive prices, as low as $13.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 2021 Toyota 4Runner, providing peace of mind with parts that meet or exceed OEM standards.

Popular Valvoline 2021 Toyota 4Runner Differentials

If you’re looking for a top-quality Differential for your 2021 Toyota 4Runner, Advance Auto Parts has exactly what you need with our selection of Valvoline Differentials. We have 2 Valvoline Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $13.99 and an average cost of $24.99, you’ll find the perfect Differential for your needs and budget. Valvoline Differentials for the 2021 Toyota 4Runner come highly rated, with over 454 customer reviews and an impressive average rating of 4.8 stars. Choosing a Valvoline Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Import Multi-Vehicle Synthetic Automatic Transmission Fluid, 1 Quart
from $13.99
(8)
Import Multi-Vehicle Synthetic Automatic Transmission Fluid, 1 Quart
“My 1999 Honda Accord 4-cylinder has over 250K miles and a drain and fill takes exactly 3 quarts of Import ATF. I do this with every oil change. No pro”
MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon
from $35.99
(446)
MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon
“Good quality great price”

FAQs for 2021 Toyota 4Runner Differentials

What are the best-selling Differentials for 2021 Toyota 4Runners?

Out of 16 Differentials that fit 2021 Toyota 4Runners, the following parts are the top sellers:

What’s the price range for 2021 Toyota 4Runner Differentials?

The prices of Differentials for the 2021 Toyota 4Runner range from $13.49 up to $869.99 for the most premium parts.

What is the average price of a Differential for a 2021 Toyota 4Runner?

The average price for Differentials for the 2021 Toyota 4Runner is $456.58. 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 41 model years of Toyota 4Runners between 1984 and 2026. The following model years are the most popular for Differential purchases: 2022, 2020, 2019, 2018, 2017, 2016, 2015, 2014, and 2013.

What are the cheapest Differentials for my 2021 Toyota 4Runner?

The cheapest 2021 Toyota 4Runner Differentials we carry are:

Does Advance Auto Parts sell Differentials for any other 2021 Toyota models?

Yes. We stock Differentials for 10 other popular 2021 Toyota models. Some of the most popular are 2021 Camry Differentials, 2021 Land Cruiser Differentials, 2021 Avalon Differentials, 2021 RAV4 Differentials, and 2021 Sienna Differentials.

What are the top-rated Differentials that fit the 2021 Toyota 4Runner?

The one 2021 Toyota 4Runner Differential we have in stock is the Differential Pinion Shim Kit. It costs $13.49.

What types of Differentials do you sell for my 2021 Toyota 4Runner?

As of 3/1/26, these are some of the most in-demand types of Differentials for a 2021 Toyota 4Runner:

Can I get help with 2021 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.