2003 Toyota Tundra Differentials

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Keep Your 2003 Toyota Tundra in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 2003 Toyota Tundra looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Axle Shafts, Differential Oil, and Differential Ring Gear Bolts. 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 and National. For example, Valvoline Differentials start at just $12.99 with an average 4.8 star rating. National offer similar pricing and quality, backed by strong customer feedback. With over 2,298 reviews and a solid 5 star average, you can shop with confidence knowing other Toyota Tundra owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2003 Toyota Tundra Differential at Advance Auto Parts is around $246.04, with a range that starts at $5.99 and goes up to $883.99. With 91 options in stock from 8 trusted brands, finding the right fit is easy. Popular picks like Flex Fill Transmission & Differential Gear Oil: Full Synthetic 75W-140, 1 Quart, 3 Qt – 80W90 Conventional Gear Oil With Posi Additive, and 3 Qt – Penzoil 80W90 Conventional Gear Oil start at just $19.99 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 2003 Toyota Tundra in peak condition, inside and out.

Essential 2003 Toyota Tundra Differentials

Yukon Gear – 07 And Up Tundra Rear 10.5" Ring Gear Bolt With 5.7L (Part No.33065)

07 And Up Tundra Rear 10.5" Ring Gear Bolt With 5.7L

from

$12.99
07 and up Tundra rear 10.5″ ring gear bolt W/ 5.7L.

Product Features:
  • Ring gear bolt
  • Fits 10.5″ Toyota Tundra
See More

Motive Gear – Differential Crush Sleeve (Part No.3121)

Differential Crush Sleeve

from

$20.29


Product Features:
  • CRUSH SLEEVE TOY. FRT END
See More

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
See More

Yukon Gear – Differential (Part No.26050)

Differential

from

$759.99
Differential

Yukon Gear – The Carrier Bearing Puller (Part No.56034)

The Carrier Bearing Puller

from

$689.99
The Yukon carrier bearing Puller works with an impact gun to quickly and safely remove carrier bearings without damaging them. This unit comes with a handy bench top stand and works with up to most standard one ton applications. This unit is works with differentials up to one-ton applcations. It is not compatible with Dana 70HD, Dana 80, 10.25″ & 10.5″ Ford, or GM & Chrysler 11.5″ differentials.

Product Features:
  • Carrier bearing puller
  • Works with an impact gun to safely and easliy remove carrrier bearings
  • Not compatible with Dana 70HD, Dana 80, Ford 10.25″ and 10.5″ or Gm and Chrysler 11.5″ applications
See More

Yukon Gear – Axle Shaft For 2007-Current Toyota Tundra Front, Intermediate Axle Shaft (Part No.21661)

Axle Shaft For 2007-Current Toyota Tundra Front, Intermediate Axle Shaft

from

$299.99
Product Features:
  • Intermediate shaft
  • Fits 2007 and up Toyota Tundra front
See More

Yukon Gear – T100 & Tacoma Standard Side Gear Thrust Washer 1.60Mm (Part No.33399)

T100 & Tacoma Standard Side Gear Thrust Washer 1.60Mm

from

$18.99
Product Features:
  • Side gear thrust washer
  • Fits Toyota Tacoma and T100
See More

Yukon Gear – 07 And Up Tundra 10.5" Rear Pinion Seal (Part No.30341)

07 And Up Tundra 10.5" Rear Pinion Seal

from

$84.99
07 and up Tundra 10.5″ rear pinion seal W/ 5.7L.Yukon Mighty seal.

Product Features:
  • Pinion seal
  • Fits 10.5″ Toyota Tundra rear
See More

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″
See More

Dorman – Differential Cover (OE Fix) (Part No.926-958)

Differential Cover (OE Fix)

from

$125.99
When the thin-gauge steel corrodes on Sequoia, Tacoma, Tundra 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 Sequoia, Tacoma and Tundra 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
See More

Yukon Gear – Outer Oil Slinger (Part No.33025)

Outer Oil Slinger

from

$10.99
Outer oil slinger for Toyota 7.5″, 8″, V6 & Landcruiser.

Product Features:
  • Outer oil slinger for Toyota 7.5″, 8″, V6 and Landcruiser
See More

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.
See More

Yukon Gear – Pinion Install Kit For Toyota T100 And Tacoma (Without Locking Differential) (Part No.13085)

Pinion Install Kit For Toyota T100 And Tacoma (Without Locking Differential)

from

$399.99
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 high quality 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 Toyota Tacoma and T100 without factory locking differential
  • Included are pinion bearings and races, pinion seal, crush sleeve, complete pinion shim kit, and marking compound with brush.
See More

Yukon Gear – Conversion Flange Kit For Tundra 9.5" Rear With Aftermarket 29 Spline Pinion (Part No.41214)

Conversion Flange Kit For Tundra 9.5" Rear With Aftermarket 29 Spline Pinion

from

$257.99
Conversion flange kit for Tundra 9.5″ rear with aftermarket 29 spline pinion. Includes yoke, drive shaft flange, pinion seal, pinion nut & u/joint.

Product Features:
  • Fits 2007 and up Toyota 9.5″
  • For Toyota Tundra
  • Conversion yoke for 29 spline gears
  • Includes yoke, U-Joint, pinion seal, pinion nut, and driveshaft flange
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Yukon Gear – FullSpool (Part No.32384)

FullSpool

from

$364.99
FullSpool

Schaeffler – Bearing – TRB (Tapered Roller Bearing) (Part No.30306A)

Bearing - TRB (Tapered Roller Bearing)

from

$65.99
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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USA Standard Gear – Rear Master Overhaul Kit for Toyota 10.5" (Part No.37120)

Rear Master Overhaul Kit for Toyota 10.5"

from

$629.99
USA Standard Master Overhaul kit for Toyota 10.5″ rear

Product Features:
  • Rear
  • Toyota 10.5″
See More

Motive Gear – Differential Carrier Shim Kit (Part No.GM9.5SSK)

Differential Carrier Shim Kit

from

$21.99


Product Features:
  • KIT SHIM SIDE 9.5″ GM
See More

Yukon Gear – 07 And Up Tundra Rear 10.5" Cross Pin Shaft With 5.7L (Part No.33415)

07 And Up Tundra Rear 10.5" Cross Pin Shaft With 5.7L

from

$179.99
07 and up Tundra rear 10.5″ cross pin shaft W/5.7L.

Product Features:
  • Cross pin shaft
  • Fits 10.5″ Toyota Tundra
See More

Yukon Gear – Ring and Pinion Kit (Part No.24669)

Ring and Pinion Kit

from

$434.99
Ring and Pinion Kit

Yukon Gear – T100 & Tacoma Standard Pinion Gear Thrust Washer (Part No.33396)

T100 & Tacoma Standard Pinion Gear Thrust Washer

from

$30.99
Product Features:
  • Pinion gear thrust washer
  • Fits Toyota Tacoma and T100
See More

National – Multi-Purpose Bearing (Part No.32307)

Multi-Purpose Bearing

from

$57.99
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
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Yukon Gear – T100 & Tacoma Roll Pin (Part No.33420)

T100 & Tacoma Roll Pin

from

$8.99
Product Features:
  • Roll pin
  • Fits Toyota Tacoma and T100
See More

Yukon Gear – T100 & Tacoma With Loc Pinion Nut (Part No.33157)

T100 & Tacoma With Loc Pinion Nut

from

$14.99
T100 & Tacoma w/LOC pinion nut.

Product Features:
  • Pinion nut
  • Fits Toyota Tacoma and T100 with factory locking differential
See More

Yukon Gear – 07 And Up Tundra Front Pinion Nut (Part No.33159)

07 And Up Tundra Front Pinion Nut

from

$23.99
07 and up Tundra front pinion nut.

Product Features:
  • Pinion nut
  • Fits 2007 and up Toyota Tundra front
See More

Valvoline – Flex Fill Transmission & Differential Gear Oil: Full Synthetic 75W-140, 1 Quart (Part No.889787)

Flex Fill Transmission & Differential Gear Oil: Full Synthetic 75W-140, 1 Quart

from

$19.99
We’ve squeezed innovation into every ounce of Valvoline FlexFill SAE 75W-140 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-140 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
  • MEETS OR EXCEEDS PERFORMANCE REQUIREMENTS for Ford M2C-192A, GM 12346140, Chrysler MS-8985 and API GL-5
See More

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

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
See More

Most Popular Differential Axle Shafts for 2003 Toyota Tundras

Enhance your 2003 Toyota Tundra with one of the 4 Differential Axle Shafts we have in stock, starting at just $123.99.

Dorman – Axle Shaft Kit (Part No.630-340)

Axle Shaft Kit

from

$412.99
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
See More

Dorman – Pre-Pressed Axle (OE Fix) (Part No.926-148)

Pre-Pressed Axle (OE Fix)

from

$872.99
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 pre-pressed 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.926-147)

Pre-Pressed Axle (OE Fix)

from

$574.99
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 pre-pressed 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 – Rear Axle Shaft (Part No.630-340A)

Rear Axle Shaft

from

$123.99
Axle shaft damaged or bearings worn out. 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
See More

Best-Selling 2003 Toyota Tundra Differential Oil

Upgrade your Tundra with one of our 11 best-selling Differential Oil, earning an average 5 stars rating across 689 reviews.

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
See More

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
See More

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

Valvoline – Flex Fill Transmission & Differential Gear Oil: Full Synthetic 75W-140, 1 Quart (Part No.889787)

Flex Fill Transmission & Differential Gear Oil: Full Synthetic 75W-140, 1 Quart

from

$19.99
We’ve squeezed innovation into every ounce of Valvoline FlexFill SAE 75W-140 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-140 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
  • MEETS OR EXCEEDS PERFORMANCE REQUIREMENTS for Ford M2C-192A, GM 12346140, Chrysler MS-8985 and API GL-5
See More

Yukon Gear – 3 Qt – 80W90 Conventional Gear Oil With Posi Additive (Part No.15003)

3 Qt - 80W90 Conventional Gear Oil With Posi Additive

from

$57.99
3 Qt. Penzoil 80W90 conventional gear Oil. W/ bottle of Posi additive.

Product Features:
  • Includes three quarts of conventional oil and one 4oz bottle of Yukon positraction additive
See More

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
See More

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
See More

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
See More

Valvoline – SynPower Transmission & Differential Gear Oil: Full Synthetic 75W-140, 5 Gallon (Part No.VV981)

SynPower Transmission & Differential Gear Oil: Full Synthetic 75W-140, 5 Gallon

from

$329.99
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
See More

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
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-Quality Differential Ring Gear Bolts for 2003 Toyota Tundras

Choose a high-quality OEM or aftermarket Differential Ring Gear Bolt for Toyota Tundras and enjoy top-notch performance from $6.99.

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 – Toyota 7.5", 8", & V6 Ring Gear Bolt Retainer Plate (Part No.33061)

Toyota 7.5", 8", & V6 Ring Gear Bolt Retainer Plate

from

$6.99
Toyota 7.5″, 8″, & V6 ring gear bolt retainer plate (5 needed).

Product Features:
  • Ring gear bolt retainer plate for Toyota 7.5″ 8″ and 8″ V6
  • 5 needed
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Yukon Gear – Ring Gear Bolt (Part No.33060)

Ring Gear Bolt

from

$6.99
Ring Gear bolt for Toyota 7.5″, 8″, V6, Landcruiser reverse front & T100/Tacoma w/ factory locker. 11mm x 1.0.

Product Features:
  • Ring gear bolt for Toyota 7.5″, 8″, 8″ V6, Landrcuiser reverse rotation front and T100 and Tacoma rear with factory locking differential
  • 11mm x 1.0
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Top Picks for 2003 Toyota Tundra Differential Pinion Seals

Invest in one of our 5 durable Differential Pinion Seals for your 2003 Toyota, knowing you’re getting trusted brands and expert craftsmanship.

National – Multi-Purpose Seal (Part No.710525)

Multi-Purpose Seal

from

$20.49
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Design type: spring loaded; multi-lip
  • Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
  • Good low temperature capability
  • Low swell in hydrocarbon fluids
  • Delivers quality and reliable performance for every type of repair
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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

$12.99
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:
  • 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
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Yukon Gear – Toyota V6, T100 Pinion Seal With Factory Elec – Locker & Factory Yoke (Part No.30336)

Toyota V6, T100 Pinion Seal With Factory Elec - Locker & Factory Yoke

from

$92.99
Toyota V6, T100 pinion seal w/factory elec. locker & factory yoke (OE replacement ONLY).Yukon Mighty seal.

Product Features:
  • Pinion seal
  • Fits toyota Tacoma and T100 with factory locker and Toyota V6
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Yukon Gear – Tacoma (With Out Factory Locker) & T100 (With Out Factory Locker) Pinion Seal (Part No.30331)

Tacoma (With Out Factory Locker) & T100 (With Out Factory Locker) Pinion Seal

from

$24.99
Tacoma (w/out factory locker) & T100 (w/out factory locker) pinion seal.Yukon Mighty seal.

Product Features:
  • Pinion seal
  • Fits toyota Tacoma and T100 without factory locker
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Our Differential Covers for 2003 Toyota Tundras

Make a smart move for your 2003 Toyota Tundra with our Differential Cover for $125.99.

Dorman – Differential Cover (OE Fix) (Part No.926-958)

Differential Cover (OE Fix)

from

$125.99
When the thin-gauge steel corrodes on Sequoia, Tacoma, Tundra 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 Sequoia, Tacoma and Tundra 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-Rated Differential Brands For Your 2003 Toyota Tundra

When it comes to finding the perfect Differential for your 2003 Toyota Tundra, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 8 trusted brands. We carry the most popular Differential brands including Valvoline and National, and more, all known for their exceptional customer ratings (average brand rating of 4.8 stars) and competitive prices, as low as $12.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 2003 Toyota Tundra, providing peace of mind with parts that meet or exceed OEM standards.

Popular Valvoline 2003 Toyota Tundra Differentials

If you’re looking for a top-quality Differential for your 2003 Toyota Tundra, Advance Auto Parts has exactly what you need with our selection of Valvoline Differentials. We have 3 Valvoline Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $12.99 and an average cost of $20.99, you’ll find the perfect Differential for your needs and budget. Valvoline Differentials for the 2003 Toyota Tundra come highly rated, with over 689 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.
High Performance Transmission & Differential Gear Oil: Conventional 80W-90, 1 Quart
from $12.99
(235)
High Performance Transmission & Differential Gear Oil: Conventional 80W-90, 1 Quart
“Good quality oil. Does it’s job.”
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”

Top-Quality National 2003 Toyota Tundra Differentials

For those in search of a high-quality Differential for their 2003 Toyota Tundra, Advance Auto Parts offers a great selection of National Differentials. With 2 National 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 $57.99, with an average price of $73.99, giving you a range of options to suit your budget. Backed by over 3 customer ratings and an average rating of 4.3 stars, National Differentials provide both reliability and excellent performance. Choosing a National Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Multi-Purpose Bearing
from $57.99
(1)
Multi-Purpose Bearing
“made the front wheels ride smooth and quiet again like new.”
Multi-Purpose Bearing
from $89.99
(2)
Multi-Purpose Bearing
“Exactly what came out”

FAQs for 2003 Toyota Tundra Differentials

What are the best-selling Differentials for 2003 Toyota Tundras?

Out of 91 Differentials that fit 2003 Toyota Tundras, the following parts are the top sellers:

What’s the price range for 2003 Toyota Tundra Differentials?

The prices of Differentials for the 2003 Toyota Tundra range from $5.99 up to $883.99 for the most premium parts.

What is the average price of a Differential for a 2003 Toyota Tundra?

The average price for Differentials for the 2003 Toyota Tundra is $246.04. 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 Tundra model years?

Yes, we carry Differentials for 24 model years of Toyota Tundras between 2000 and 2025. 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 2003 Toyota Tundra?

The cheapest 2003 Toyota Tundra Differentials we carry are:

Does Advance Auto Parts sell Differentials for any other 2003 Toyota models?

Yes. We stock Differentials for 15 other popular 2003 Toyota models. Some of the most popular are 2003 Corolla Differentials, 2003 4Runner Differentials, 2003 Camry Differentials, 2003 Land Cruiser Differentials, and 2003 Celica Differentials.

What types of Differentials do you sell for my 2003 Toyota Tundra?

As of 3/1/26, these are some of the most in-demand types of Differentials for a 2003 Toyota Tundra:

Can I get help with 2003 Toyota Tundra 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 Tundra Differentials?

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