2003 Chevrolet Blazer Differentials

Essential 2003 Chevrolet Blazer Differentials

Motive Gear – Differential Bearing Kit – Koyo (Part No.R10RL)

Differential Bearing Kit - Koyo

from

$99.99
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:
  • KIT-BRG & SEAL GM 8.5 10 BOLT – ’99 & UP LATER
See More

National – Bearings (Part No.15245)

Bearings

from

$9.99
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
  • Crowned raceways and rollers to ensure even load distribution for maximum life
  • Industry leading coverage
  • Professional technicians know they can depend on National
See More

Pro-King – Differential Cross Shaft (Part No.742G930)

Differential Cross Shaft

from

$2.79
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

Product Features:
  • All products are designed to meet or exceed OE quality, form, fit and funtion.
See More

Yukon Gear – Positraction Internals For 8.5" GM With 30 Spline Axles (Part No.16053)

Positraction Internals For 8.5" GM With 30 Spline Axles

from

$352.99
Yukon positraction internals for 8.5″ GM with 30 spline axles. Yukon uses higher quality materials and better techniques than OEM to ensure a longer lasting spider gear set. This kit does not include clutches. All components come with a one year warranty against manufacturing defects. This kit is compatible with Yukon Dura Grip or Eaton positractions. It will not fit a factory Gov-Loc positraction.

Product Features:
  • Spider gear kit
  • Fits GM GM 8.5″ and 8.6″ Dura Grip positraction with 30 spline axles
  • Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and side gear thrust washers.
See More

Motive Gear – Differential Mini Spool (Part No.MS7.5-26)

Differential Mini Spool

from

$98.99
Motive Gear Mini-Spools replace your stock spider and side gears with a solid billet mini-spool for 100% traction to both wheels. Not recommended for street applications.

Product Features:
  • Billet construction
  • Not recommended for street applications
  • GM7.5″ MINI SPOOL 26 SPLINE
See More

MTC – Differential Drain P (Part No.J7065587755MTC)

Differential Drain P

from

$11.58
Differential Drain P

Motive Gear – Drive Shaft Pinion Yoke (Part No.MG1310-6010)

Drive Shaft Pinion Yoke

from

$117.99


Product Features:
  • PINION YOKE
  • CAST:1310
  • U-BOLT STYLE
See More

Richmond Gear – Differential Cross Shaft (Part No.CSPGM75)

Differential Cross Shaft

from

$26.49
Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND!

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

Yukon Gear – 8.5" & 8.6" GM Standard Open Pinion Gear Thrust Washer – Also Fits 8.5" Eaton With 0.795" Cross Pin (Part No.33385)

8.5" & 8.6" GM Standard Open Pinion Gear Thrust Washer - Also Fits 8.5" Eaton With 0.795" Cross Pin

from

$10.99
8.5″ & 8.6″ GM standard Open pinion gear Thrust washer. also fits 8.5″ Eaton with 0.795″ cross pin.

Product Features:
  • Pinion gear thrust washer for GM 8.5″ and 8.6″
  • Fits standard open differentials only
  • 0.795″ I.D.
See More

Yukon Gear – Dura Grip Positraction For GM 12 Bolt Truck With 30 Spline Axles, 3.73 & Up (Part No.26035)

Dura Grip Positraction For GM 12 Bolt Truck With 30 Spline Axles, 3.73 & Up

from

$859.99
The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence & performance you need. Get longer life and better traction with the heavy duty Yukon Dura Grip Positraction. The Yukon Dura Grip uses a nodular case and forged 4320 internals for added strength along with composite clutches for high performance and long life. All units are Rebuildable and many offer upgrades to increase aggressiveness for racing applications. Each unit carries a one year warranty against defects.

Product Features:
  • Fits GM 12 bolt truck with 30 spline axles
  • 3.73 and up ratio only
  • 4-spring, clutch style positraction
  • Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
  • Fully rebuildable
  • Assembled in the USA
See More

Felpro – Axle Housing Cover Gasket (Part No.RDS 6629)

Axle Housing Cover Gasket

from

$6.49
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

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

National – Bearings (Part No.02820)

Bearings

from

$12.29
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
  • Crowned raceways and rollers to ensure even load distribution for maximum life
  • Industry leading coverage
  • Professional technicians know they can depend on National
See More

Pro-King – Differential Internal Nest Kit (Part No.741A717A)

Differential Internal Nest Kit

from

$155.99
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

Product Features:
  • All products are designed to meet or exceed OE quality, form, fit and funtion.
See More

Yukon Gear – Crush Sleeve For GM 7.6" IRS, 8.5", 8.6", 8.75", 8.875" & Nissan Titan Rear – Approx 0.620" Long (Part No.33097)

Crush Sleeve For GM 7.6" IRS, 8.5", 8.6", 8.75", 8.875" & Nissan Titan Rear - Approx 0.620" Long

from

$5.99
Replacement Crush Sleeve for GM 7.6″ IRS, 8.5″, 8.6″, 8.75″, 8.875″ & Nissan Titan rear. Approx 0.620″ long.

Product Features:
  • Crush sleeve for Jeep JK rear, GM 7.6″ IRS, 8.5″ and 8.6″ and Nissan Titan rear
  • 0.620″ tall
See More

National – Bearings (Part No.206)

Bearings

from

$25.49
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
  • Controlled heat treating process for lasting performance and extended bearing life
  • Industry leading coverage
  • Professional technicians know they can depend on National
See More

Pro-King – Differential Case (Loaded) (Part No.742G715B)

Differential Case (Loaded)

from

$455.99
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

Product Features:
  • All products are designed to meet or exceed OE quality, form, fit and funtion.
See More

Motive Gear – Differential Ring and Pinion (Part No.GM12-308)

Differential Ring and Pinion

from

$293.99


Product Features:
  • GM 12BL 8.875 R/P 3.08 MG
See More

National – Multi Purpose Seal (Part No.5778V)

Multi Purpose Seal

from

$69.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Design type: spring loaded; multi-lip
  • Temperature range: -100°F to 450°F; -73°C to 232°C
  • Resistant to hydrocarbon/oxygenate blends and provides superior performance
  • Provides excellent dry running capabilities, low coefficient of friction and excellent resistance to chemicals
  • Delivers quality and reliable performance for every type of repair
See More

ATP – DIFF COVER KIT (Part No.111107)

DIFF COVER KIT

from

$52.99
DIFF COVER KIT

Spicer – FRONT AXLE SHAFT (Part No.41677)

FRONT AXLE SHAFT

from

$141.99
FRONT AXLE SHAFT

Motive Gear – Differential Pinion Shim Kit (Part No.1102)

Differential Pinion Shim Kit

from

$9.49


Product Features:
  • KIT SHIM PINION
See More

Yukon Gear – Ring Gear Bolt (Part No.33049)

Ring Gear Bolt

from

$6.99
Ring gear bolt for GM 7.5″, 7.6″, 7.6″ IRS, 8.0″, 8.25″ IFS, 8.5″, 8.6″ & 8.6″ IRS. 7/16″ x 20.

Product Features:
  • Ring gear bolt for GM 7.5″, 7.625″, 7.6″ IRS, 8.0″, 8.25″ IFS, 8.5″, 8.6″ and 8.6″ IRS
  • 7/16″ x 20
See More

National – Taper Bearing Cone (Part No.LM501349)

Taper Bearing Cone

from

$17.99
Manufactured with premium-grade steel, National® taper bearing cones feature crowned raceways and rollers to ensure even load distribution.

Product Features:
  • PREMIUM MATERIALS — Precision manufactured using premium-grade steel for outstanding durability and performance
  • SMOOTH ROTATION — Crowned raceways and rollers for even load distribution
  • OE-STYLE DESIGN — Engineered to meet OE specifications
  • COMPREHENSIVE COVERAGE — Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on
See More

Pennzoil – Synchromesh Manual Transmission Fluid: Low-Temperature (Part No.3501)

Synchromesh Manual Transmission Fluid: Low-Temperature

from

$11.99
Pennzoil? Synchromesh Fluid is designed to offer optimal protection for moderately loaded gears in manual transmissions. Containing a high detergent additive system, it helps cope with water, dust, dirt, and any other small deposits you might encounter on or off-road(1). Pennzoil? Synchromesh Fluid also offers synchronizer compatibility for performance in manual transmissions, specifically to fulfill the needs of Chrysler, GM, Honda and other transmission requirements. Pennzoil? Synchromesh Fluid meets General Motors specification 9985648 for use where GM part numbers 12345349 or 12345577 are called out for use. Chrysler manual transmission fluid specification MS-9224 is also met. This high quality manual transmission fluid is formulated for good low temperature flow to maintain shift characteristics even after a cold night(2). Corrosion protection is added to help protect your transmission. Pennzoil? Synchromesh fluid is a manual transmission fluid designed for certain manual trans axles and manual transmissions used by general motors or Chrysler. (1)The Anglamol 6091 additive system contains approximately twice the sulfonate detergent levels as current generation PCMO, 4500 ppm as magnesium of magnesium sulfonate. This engine oil type additive will emulsify water and polar contamination sufficiently to handle contamination levels above 0.5% water. Anglamol 6091 – Detergent, friction modifier, extreme pressure agent, seal swell, anti-wear, anti-oxidant. Chemical Composition – Magnesium sulphonate, alkenyl amide, alkenyl ester sulphide, alkenyl phosphite, alkylbenzene, hecterocyclic ether, zinc dithiophosphate. (2)Pour point is less than -39 Deg. C. Low temperature viscosity in a -40 Deg. C Brookfield test of 50,000 cPs maximum, less than a 75W gear oil and the cold cranking viscosity less than a typical conventional SAE 5W engine oil.

Product Features:
  • Excellent yellow metal compatibility
  • Meets GM specification 9985648 and Chrysler specification MS-9224
  • Excellent synchronizer performance
  • Exhibits excellent low-temperature performance
See More

Pro-King – Differential Cover Gasket (Part No.742G303)

Differential Cover Gasket

from

$3.99
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

Product Features:
  • All products are designed to meet or exceed OE quality, form, fit and funtion.
See More

Yukon Gear – 8.2" & 8.5" Rear Cover Gasket (Part No.23020)

8.2" & 8.5" Rear Cover Gasket

from

$10.99
8.2″ & 8.5″ rear cover gasket.

Product Features:
  • Cover gasket
  • Fits GM 8.2″, 8.5″ and 8.6″
See More

Motive Gear – Differential Gear Install Kit (Part No.GM7.5IK)

Differential Gear Install Kit

from

$49.99


Product Features:
  • MINI INSTALL KIT GM 7.5
See More

Richmond Gear – RngPnnInstlKt (Part No.83-1018-B)

RngPnnInstlKt

from

$39.49
RngPnnInstlKt

2003 Chevrolet Blazer Differentials

Maybe you’re in the middle of a full rebuild of that 2003 Chevrolet Blazer. Maybe you just need a couple of Differentials. Either way, Advance Auto Parts has 118 different Differentials in our inventory ranging from $1.99 to $1,014.99. That means you can find the exact parts or products you need to keep that 2003 Chevrolet Blazer running smoothly.

Differentials are only as good as their brand. We stock 17 different brands to make sure you have plenty of trusted parts to choose from for your 2003 Chevrolet Blazer. Valvoline, Pennzoil, and Felpro are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Differentials for your 2003 Chevrolet Blazer, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 954 reviews in this category, some of the top rated parts include Rear Differential Cover with 4.5 stars and Differential Ring And Pinion with 4.2 stars.

So if you’re in the market for aftermarket Differentials to keep your 2003 Chevrolet Blazer rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Differentials Brands To Make Your 2003 Chevrolet Blazer Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 2003 Chevrolet Blazer demands trusted brand parts and products to keep it running. Many trusted brands of Differentials make up Advance Auto Parts’ inventory, and all are ready to help make your Blazer the best it can be. Be sure to browse some of our top Differentials brands and parts.

Popular Pennzoil Differentials

We carry Pennzoil parts in our stock across Differential Oil categories, plus more. For a 2003 Chevrolet Blazer, our most popular Pennzoil Differentials include:
Synchromesh Manual Transmission Fluid: Low-Temperature
from $11.99
(104)
Synchromesh Manual Transmission Fluid: Low-Temperature
Differential Oil

FAQs for 2003 Chevrolet Blazer Differentials

What are the most purchased Differentials for the 2003 Chevrolet Blazer?

Out of 118 Differentials for the 2003 Chevrolet Blazer, the most popular in our inventory are:
Differential Cover Gasket
from $9.99
(195)
Differential Cover Gasket
Rear Housing Cover Gaskets
DIFFERENTIAL GASKET
from $7.99
(45)
DIFFERENTIAL GASKET
Rear Differential Cover Gaskets
Rear Differential Cover
from $51.99
(1)
Rear Differential Cover
Differential Covers

What are the top-rated 2003 Chevrolet Blazer Differentials?

Top-rated Differentials for your 2003 Chevrolet Blazer based on customer reviews/ratings are:
Rear Differential Cover
from $20.99
(38)
Rear Differential Cover
“Looks great, face lift for the rear differential. Old one was rusted & in bad shape. Just remember to get the correct size.”
Differential Ring And Pinion
from $342.99
(23)
Differential Ring And Pinion
“So far so good.”
Differential Carrier Gear Kit
from $231.99
(16)
Differential Carrier Gear Kit
“First set of gears were not complete. But staff reordered them, had them next day. Thanks”