Subaru WRX STI Differentials

Your One-Stop Shop For Trusted Subaru WRX STI Differentials

If you’re in search of Subaru WRX STI Differentials aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 20 Differentials from top brands with prices ranging from $6.68 to $77.51.

Beyond great prices, we stock trusted brands manufacturing all types of Differentials for your Subaru WRX STI. Of the 7 OEM and aftermarket parts brands we carry, some of the most popular are Valvoline, Idemitsu, and National.

And don’t forget to read customer reviews across all Differentials categories in our catalog. Buy with confidence by leveraging past customer experiences of our aftermarket and OEM parts.

At Advance Auto Parts, we don’t think top quality Differentials have to cost top dollar, and we prove it. Browse our top Subaru WRX STI Differentials below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

Essential Subaru WRX STI Differentials

National – Multi Purpose Seal (Part No.1173)

Multi Purpose Seal

from

$12.79
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
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National – Pinion Seal (Part No.711089)

Pinion Seal

from

$18.79
Pinion Seal

Ishino Stone – Pinion Seal (Part No.J7010259666ISH)

Pinion Seal

from

$6.68
Pinion Seal

Idemitsu – Type TLS-LV Automatic Transmission Fluid – 1 qt (Part No.30040096-75000C)

Type TLS-LV Automatic Transmission Fluid - 1 qt

from

$14.49
Formulated to meet the specific requirements of Toyota, Lexus, and Scion vehicles equipped with conventional (non-CVT) transmissions that require the use of Toyota ATF WS. Recommended for service-fill in all Toyota, Lexus, and Scion automatic transmissions where ATF WS 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:
  • Precisely engineered frictional characteristics guarantee smooth shifting and outstanding anti-shudder performance
  • Optimized viscosity and advanced friction reducing additive technology provide exceptional fuel economy performance
  • Excellent resistance to oxidation and thermal breakdown provide long fluid life and extended protection
  • Exceptional wear protection of gears and bearings
  • Provides superior deposit control and protects metal surfaces from rust and corrosion
  • Excellent seal compatibility and conditioning reduces risk of fluid leaks due to seal shrinkage, hardening and cracking
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Valvoline – Import Multi-Vehicle Automatic Transmission Fluid, 1 Gallon (Part No.820681)

Import Multi-Vehicle Automatic Transmission Fluid, 1 Gallon

from

$36.99
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
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Valvoline – ATF for Mercon®V Applications Conventional, 1 Quart (Part No.822345)

ATF for Mercon®V Applications Conventional, 1 Quart

from

$12.99
Valvoline ATF for MERCON®V Applications is a high-quality transmission fluid meeting and exceeding the requirements of the Ford Mercon V specification which covers most Ford passenger cars and light-duty trucks (except those specifying MERCON®SP, MERCON®LV or Type F fluids), including Lincoln and Mercury, as well as most pre-2006 GM vehicles and many imports. Recommended for use in the following applications: MERCON®V, MERCON®, DEXRON®-III, DEXRON®-II, Caterpillar TO-2, Allison C-4. Other applications include Power steering fluid where a DEXRON® or MERCON® fluid is recommended. Suitable to use in Nissan Matic D, Matic J and Matic K.

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
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Whiteline – Differential Mount Support Outrigger Bushing (Part No.KDT905)

Differential Mount Support Outrigger Bushing

from

$63.99
Whiteline’s differential bushing solutions ensure pinion angles are maintained while delivering an improved gear shift resulting in reduced initial torque loss and greater power transfer to the wheels.

Product Features:
  • Install guide included providing detailed instructions on how to install your new Whiteline purchase.
  • Whiteline’s latest technology synthetic elastomer formulation boasts resistance to oil, grease, ozone and weathering.
  • Supplied with extreme pressure molybdenum disulphide (LM) based grease for extended life.
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Whiteline – Differential Mount In Cradle Bushing (Part No.KDT940)

Differential Mount In Cradle Bushing

from

$48.99
Whiteline’s differential bushing solutions ensure pinion angles are maintained while delivering an improved gear shift resulting in reduced initial torque loss and greater power transfer to the wheels.

Product Features:
  • Protective plating on all metal components acts as a hard skin that is much tougher than conventional paint allowing this product to withstand the toughest conditions and resist corrosion for years to come.
  • Whiteline’s latest technology synthetic elastomer formulation boasts resistance to oil, grease, ozone and weathering.
  • Specially bonded design for optimised strength typically required in high load bearing applications.
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Whiteline – Differential Mount In Cradle Bushing (Part No.KDT906)

Differential Mount In Cradle Bushing

from

$69.99
Whiteline’s differential bushing solutions ensure pinion angles are maintained while delivering an improved gear shift resulting in reduced initial torque loss and greater power transfer to the wheels.

Product Features:
  • Featuring premium anodized alloy materials, Whiteline alloy products are anodized providing a long-lasting protective barrier to corrosion and wear but they look great too.
  • Protective plating on all metal components acts as a hard skin that is much tougher than conventional paint allowing this product to withstand the toughest conditions and resist corrosion for years to come.
  • Whiteline’s latest technology synthetic elastomer formulation boasts resistance to oil, grease, ozone and weathering.
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National – Axle Diff. Seal (Part No.711090)

Axle Diff. Seal

from

$14.29
Axle Diff. Seal

National – Axle Diff. Seal (Part No.711091)

Axle Diff. Seal

from

$13.79
Axle Diff. Seal

National – Bearings (Part No.32307)

Bearings

from

$53.99
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Matched cup and cone components ensures consistent quality and outstanding performance
  • Industry leading coverage
  • Professional technicians know they can depend on National
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National – Bearings (Part No.32306)

Bearings

from

$44.49
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Matched cup and cone components ensures consistent quality and outstanding performance
  • Industry leading coverage
  • Professional technicians know they can depend on National
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SKF – Differential Pinion Bearing (Part No.J7020259642SKF)

Differential Pinion Bearing

from

$77.51
Differential Pinion Bearing

National – Shaft Repair Sleeve (Part No.99139)

Shaft Repair Sleeve

from

$39.99
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
  • Installation tool reduces sleeve distortion and allows for installation without removal from the shaft
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National – Shaft Repair Sleeve (Part No.99166)

Shaft Repair Sleeve

from

$34.99
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
  • Installation tool reduces sleeve distortion and allows for installation without removal from the shaft
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Driveworks – Camshaft Seal (Part No.S-99139)

Camshaft Seal

from

$23.99
Product Features:
  • Brand may vary by location
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Driveworks – Differential Seal (Part No.S-223255)

Differential Seal

from

$7.49
Product Features:
  • Brand may vary by location
See More

Differentials Brands You Can Trust For Your Subaru WRX STI

7 trusted brands of Differentials line our shelves, ready to help keep your Subaru WRX STI running smooth. Below are some of the most popular brands and their top Differentials offerings:

Popular National Differentials

National products for the Subaru WRX STI span several categories. Some of the highest-rated National Differentials that will fit your Subaru WRX STI are:
Shaft Repair Sleeve
from $39.99
(1)
Shaft Repair Sleeve
Pinion Shaft Seals
Bearings
from $53.99
(1)
Bearings
Front Differential Pinion Bearings

Top Subaru WRX STI Differentials from Valvoline

Your Subaru WRX STI will be purring again thanks to Valvoline brand Differentials available for online order or in-store pick up. Popular Valvoline parts include:
ATF for Mercon®V Applications Conventional, 1 Quart
from $12.99
(120)
ATF for Mercon®V Applications Conventional, 1 Quart
Differential Oil

Most Purchased Subaru WRX STI Differentials from Valvoline

When you buy the most frequently purchased Valvoline brand Differentials, you can be confident it will be the right part for your Subaru WRX STI. Here are the Valvoline Differentials Advanced Auto customers buy the most:
ATF for Mercon®V Applications Conventional, 1 Quart
from $12.99
(120)
ATF for Mercon®V Applications Conventional, 1 Quart
Differential Oil

FAQs for Subaru WRX STI Differentials

What are the most purchased Differentials for the Subaru WRX STI?

Out of 20 Differentials for the Subaru WRX STI, the most popular in our inventory are:
Type TLS-LV Automatic Transmission Fluid - 1 qt
from $14.49
This product is not rated
Type TLS-LV Automatic Transmission Fluid – 1 qt
Differential Oil
Differential Seal
from $7.49
This product is not rated
Differential Seal
Differential Seal Kit
Shaft Repair Sleeve
from $34.99
This product is not rated
Shaft Repair Sleeve
Differential Pinion Pilot Bearings