2002 Chevrolet Trailblazer Ext Differentials

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Keep Your 2002 Chevrolet Trailblazer Ext in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 2002 Chevrolet Trailblazer Ext looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Covers, Differential Oil, and Rear Housing Cover Gaskets. 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 Motive Gear, National, and Felpro. For example, Motive Gear Differentials start at just $6.99 with an average 4.1 star rating. National and Felpro offer similar pricing and quality, backed by strong customer feedback. With over 648 reviews and a solid 4.4 star average, you can shop with confidence knowing other Chevrolet Trailblazer Ext owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2002 Chevrolet Trailblazer Ext Differential at Advance Auto Parts is around $185.57, with a range that starts at $2.99 and goes up to $579.99. With 75 options in stock from 11 trusted brands, finding the right fit is easy. Popular picks like National Multi-Purpose Bearing, A-18, Dorman – Help Differential Shaft Lock Bolt, 81048, and Motive Gear Ring Gear Bolt, 14066913 start at just $2.99 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 2002 Chevrolet Trailblazer Ext in peak condition, inside and out.

Essential 2002 Chevrolet Trailblazer Ext Differentials

Yukon Gear – Yukon Gear Replacement Carrier Shim Kit For Dana Spicer 44, 30 Spline Axles, 55010 (Part No.55010)

Yukon Gear Replacement Carrier Shim Kit For Dana Spicer 44, 30 Spline Axles, 55010

from

$15.99
Yukon 1541H alloy replacement rear axle for Dana 80, 37 spline (34.0-36.5) Full float axle (8X3.96). Yukon 1541H alloy axles offer a strength increase over stock while retaining a low cost. Yukon 1541H alloy rear axles come with a one year warranty against manufacturing defects. This is a full-floating axle.
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B & M – "B & M Cast Aluminum Differential Cover For Gm 8.2"", 8.5"" & 8.6"" 10 Bolt, 70502" (Part No.70502)

"B & M Cast Aluminum Differential Cover For Gm 8.2"", 8.5"" & 8.6"" 10 Bolt, 70502"

from

$334.99
Our engineers designed the line of Hi-Tek differential covers to not only look good but address a number of weaknesses of the factory-stamped steel covers. First, they started by constructing the covers of thick A356.0-T6 aluminum, which dissipates heat much faster than the factory steel unit keeping the fluid temperature lower under high-stress loads vs. a steel cover. Then for added durability, we added a reinforced center bar for extra strength along with load bolts to help prevent bearing cap deflection under severe loads. The internal shape of the cover retains the smooth round back internally to help keep the fluid flow going over the ring gear to properly lubricate the gears and bearings. Additional features include a magnetic drain plug for catching ferrous metal particles, a machined B&M logo and all necessary hardware, and easy-to-follow detailed instructions for a quick and simple installation you can do at home.
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Felpro – Felpro Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, RDS 55028-1 (Part No.RDS 55028-1)

Felpro Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, RDS 55028-1

from

$11.99
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
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Motive Gear – Motive Gear Ring Gear Bolt, 14066913 (Part No.14066913)

Motive Gear Ring Gear Bolt, 14066913

from

$2.99
Motive Gear Ring Gear Bolt, 14066913.
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National – National Multi-Purpose Bearing, A-18 (Part No.A-18)

National Multi-Purpose Bearing, A-18

from

$18.29
Manufactured with premium-grade steel, National taper bearing sets feature crowned raceways and rollers to ensure even load distribution.
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Motive Gear – Motive Gear Differential Internal Carrier Gear Kit, GM8.6BIL (Part No.GM8.6BIL)

Motive Gear Differential Internal Carrier Gear Kit, GM8.6BIL

from

$148.99
This Motive Gear Differential Rebuild Kit includes all of the parts required to rebuild your stock open differential. The gears are lapped for quiet operation. Includes spider and side gears, cross shaft, lock pin or bolt and thrust washers.
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Motive Gear – Motive Gear Differential Spool, FS10-30 (Part No.FS10-30)

Motive Gear Differential Spool, FS10-30

from

$187.99
Motive Gear Differential Spool, FS10-30.
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Dorman – Help – Dorman – Help Differential Shaft Lock Bolt, 81048 (Part No.81048)

Dorman - Help Differential Shaft Lock Bolt, 81048

from

$6.79
This differential pinion shaft lock bolt is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.
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Motive Gear – Motive Gear Differential Pinion Shim Kit, 1100 (Part No.1100)

Motive Gear Differential Pinion Shim Kit, 1100

from

$6.99
High-quality Differential Component Shim
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Yukon Gear – "Yukon Gear Adjuster Lock Bolt for Left Hand Case Half Of 7.2"" and 9.25"" GM IFS, 33244" (Part No.33244)

"Yukon Gear Adjuster Lock Bolt for Left Hand Case Half Of 7.2"" and 9.25"" GM IFS, 33244"

from

$32.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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National – National Axle Differential Bearing & Seal Kit, RA-321-C (Part No.RA-321-C)

National Axle Differential Bearing & Seal Kit, RA-321-C

from

$90.99
The National bearing & seal kit includes all the components required to complete the repair.
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Felpro – Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 55479 (Part No.RDS 55479)

Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 55479

from

$43.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.
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Driveworks – Driveworks Tapered Roller Bearing, S-JL-69349 (Part No.S-JL-69349)

Driveworks Tapered Roller Bearing, S-JL-69349

from

$8.99
Driveworks Tapered Roller Bearing, S-JL-69349.
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National – National Multi-Purpose Seal, 710547 (Part No.710547)

National Multi-Purpose Seal, 710547

from

$22.29
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.
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National – National Shaft Repair Sleeve, 99139 (Part No.99139)

National Shaft Repair Sleeve, 99139

from

$41.49
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.
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Dorman – Dorman Axle Shaft, 630-153 (Part No.630-153)

Dorman Axle Shaft, 630-153

from

$364.99
This axle shaft is designed to match the performance of the original equipment shaft on specified vehicle makes, models and years. When a factory axle shaft fails or is damaged by rust or collision, this replacement is engineered to help restore and ensure the proper transfer of torque and rotational power from the differential or transmission to the wheel.
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Richmond Gear – Richmond Gear Differential Pinion Shaft, 80-0272-1 (Part No.80-0272-1)

Richmond Gear Differential Pinion Shaft, 80-0272-1

from

$66.99
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.
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Dorman – Dorman Differential Ring and Pinion Set, 697-812 (Part No.697-812)

Dorman Differential Ring and Pinion Set, 697-812

from

$231.99
This differential ring and pinion directly replaces the original equipment on specific vehicle years, makes and models.
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Motive Gear – Motive Gear Differential Ring and Pinion, GM10-390 (Part No.GM10-390)

Motive Gear Differential Ring and Pinion, GM10-390

from

$233.99
Motive Gear Differential Ring and Pinion, GM10-390.
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National – National Bearing Race, JL69310 (Part No.JL69310)

National Bearing Race, JL69310

from

$12.99
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
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Driveworks – Driveworks Tapered Roller Bearing, S-M-802048 (Part No.S-M-802048)

Driveworks Tapered Roller Bearing, S-M-802048

from

$17.99
Driveworks Tapered Roller Bearing, S-M-802048.
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Motive Gear – Motive Gear Differential Crush Sleeve, 1234726 (Part No.1234726)

Motive Gear Differential Crush Sleeve, 1234726

from

$4.99
Motive Gear offers some of the toughest drive train components on the market today. If you are looking for the largest line of performance ring and pinion gear options available with gear sets in a wide range of ratios for nearly every application, both on and off-road, check out Motive Gear. Motive Gear products can be found in the winner’s circle at racing events worldwide. The superior quality of Motive Gear components is the result of years of racing development, outstanding design and state-of-the-art manufacturing methods. Extensive testing is performed on all products by our in-house engineers.
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Dorman – Help – Dorman – Help Pinion Crush Sleeves, 81057 (Part No.81057)

Dorman - Help Pinion Crush Sleeves, 81057

from

$5.99
This differential crush sleeve is designed to match the fit and function of the original sleeve on specified vehicles, and is engineered for durability and reliable performance.
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Yukon Gear – Yukon Gear 3 Qt – Penzoil 80W90 Conventional Gear Oil, 15002 (Part No.15002)

Yukon Gear 3 Qt - Penzoil 80W90 Conventional Gear Oil, 15002

from

$44.99
Union 76 gear oil is a conventional non-synthetic 80W90 formulation designed for all types of differentials.
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Yukon Gear – "Yukon Gear Redline Synthetic ""Shock Proof"" Oil – 4 Quarts, 15004" (Part No.15004)

"Yukon Gear Redline Synthetic ""Shock Proof"" Oil - 4 Quarts, 15004"

from

$137.99
Redline Heavy Shockproof Gear Oil is formulated to provide lasting protection.
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National – National Shaft Repair Sleeve, 99210 (Part No.99210)

National Shaft Repair Sleeve, 99210

from

$49.49
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.
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Most Popular Differential Covers for 2002 Chevrolet Trailblazer Exts

Enhance your 2002 Chevrolet Trailblazer Ext with one of the 2 Differential Covers we have in stock, starting at just $334.99.

B & M – "B & M Cast Aluminum Differential Cover For Gm 8.2"", 8.5"" & 8.6"" 10 Bolt – Black, 71502" (Part No.71502)

"B & M Cast Aluminum Differential Cover For Gm 8.2"", 8.5"" & 8.6"" 10 Bolt - Black, 71502"

from

$349.99
Our engineers designed the line of Hi-Tek differential covers to not only look good but address a number of weaknesses of the factory-stamped steel covers. First, they started by constructing the covers of thick A356.0-T6 aluminum, which dissipates heat much faster than the factory steel unit keeping the fluid temperature lower under high-stress loads vs. a steel cover. Then for added durability, we added a reinforced center bar for extra strength along with load bolts to help prevent bearing cap deflection under severe loads. The internal shape of the cover retains the smooth round back internally to help keep the fluid flow going over the ring gear to properly lubricate the bearings, the ring and pinion gears. Additional features include a magnetic drain plug for catching ferrous metal particles, MIL-Spec (MIL-A-8625) black anodized finish, machined B&M logo, and all necessary hardware and easy-to-follow detailed instructions for a quick and simple installation you can do at home.
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B & M – "B & M Cast Aluminum Differential Cover For Gm 8.2"", 8.5"" & 8.6"" 10 Bolt, 70502" (Part No.70502)

"B & M Cast Aluminum Differential Cover For Gm 8.2"", 8.5"" & 8.6"" 10 Bolt, 70502"

from

$334.99
Our engineers designed the line of Hi-Tek differential covers to not only look good but address a number of weaknesses of the factory-stamped steel covers. First, they started by constructing the covers of thick A356.0-T6 aluminum, which dissipates heat much faster than the factory steel unit keeping the fluid temperature lower under high-stress loads vs. a steel cover. Then for added durability, we added a reinforced center bar for extra strength along with load bolts to help prevent bearing cap deflection under severe loads. The internal shape of the cover retains the smooth round back internally to help keep the fluid flow going over the ring gear to properly lubricate the gears and bearings. Additional features include a magnetic drain plug for catching ferrous metal particles, a machined B&M logo and all necessary hardware, and easy-to-follow detailed instructions for a quick and simple installation you can do at home.
See More

Best-Selling 2002 Chevrolet Trailblazer Ext Differential Oil

Upgrade your Trailblazer Ext with one of our 4 best-selling Differential Oil.

Yukon Gear – Yukon Gear 3 Qt – Penzoil 80W90 Conventional Gear Oil, 15002 (Part No.15002)

Yukon Gear 3 Qt - Penzoil 80W90 Conventional Gear Oil, 15002

from

$44.99
Union 76 gear oil is a conventional non-synthetic 80W90 formulation designed for all types of differentials.
See More

Yukon Gear – "Yukon Gear Redline Synthetic ""Shock Proof"" Oil – 4 Quarts, 15004" (Part No.15004)

"Yukon Gear Redline Synthetic ""Shock Proof"" Oil - 4 Quarts, 15004"

from

$137.99
Redline Heavy Shockproof Gear Oil is formulated to provide lasting protection.
See More

Valvoline – Valvoline Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid 1 GA, 904891 (Part No.904891)

Valvoline Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid 1 GA, 904891

from

$35.99
Choosing an automatic transmission fluid just got easier. Valvoline Full Synthetic MaxLife Multi-Vehicle ATF, the #1 ATF product, is suitable for use in 95% of ATF vehicles in operation with US registered light duty applications. And now, it€™s also recommended for most belt and chain-driven continuously variable transmissions (CVT). Featuring advanced additives to prevent the major causes of transmission breakdown, it€™s designed to help prevent leaks, reduce wear and tear, and maximize performance €“ all for much longer than conventional fluids. It has improved thermal stability for longer fluid life, better viscosity stability for consistent transmission operation, and frictional enhancements for smooth gear engagements. Whether your vehicle has a CVT or traditional automatic, Valvoline MaxLife Multi-Vehicle ATF is suitable for a broad range of transmissions including Ford, GM, Toyota, Honda, Nissan, Hyundai, Subaru, BMW, Mercedes, Volvo, VW and Audi vehicles. It€™s specifically recommended for use in the following applications: GM DEXRON-II, DEXRON-III, DEXRON-VI, and DEX-CVT; Ford MERCON LV; Toyota/Lexus Type T, T-II, T-IV, WS, CVTF FE, and CVTF TC. For the many miles ahead, trust your transmission with Valvoline, the #1 automatic transmission fluid brand.
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Valvoline – Valvoline Extended Protection Full Synthetic Automatic Transmission Fluid ATF 1 QT, 904976 (Part No.904976)

Valvoline Extended Protection Full Synthetic Automatic Transmission Fluid ATF 1 QT, 904976

from

$15.99
Modern transmissions are better than ever, with more gears to help improve fuel efficiency and acceleration. Greater performance calls for greater protection. Valvoline Extended Protection Full Synthetic ATF features our exclusive Dual Defense Additive Technology for two layers of protection against metal-on-metal contact and thermal breakdown, all while minimizing wear on clutch components. In fact, Valvoline Extended Protection Full Synthetic ATF is 45% stronger against breakdown compared to major brand DEX/MERC oxidative PDSC performance. Proven to maximize transmission life, our patented formula keeps your modern vehicle shifting smoothly, mile after mile, with the ultimate protection you can only expect from Valvoline, the #1 ATF brand.
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Top-Quality Rear Housing Cover Gaskets for 2002 Chevrolet Trailblazer Exts

Choose a high-quality OEM or aftermarket Rear Housing Cover Gasket for Chevrolet Trailblazer Exts and enjoy top-notch performance from $43.99.

Felpro – Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 55479 (Part No.RDS 55479)

Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 55479

from

$43.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.
See More

Our Top Pick for a 2002 Chevrolet Trailblazer Ext Differential Bearing

Invest in a durable Differential Bearing for your 2002 Chevrolet, knowing you’re getting trusted brands and expert craftsmanship.

National – National Multi-Purpose Bearing, A-18 (Part No.A-18)

National Multi-Purpose Bearing, A-18

from

$18.29
Manufactured with premium-grade steel, National taper bearing sets feature crowned raceways and rollers to ensure even load distribution.
See More

Our Top-Rated Rear Differential Cover Gaskets for 2002 Chevrolet Trailblazer Exts

Make a smart move for your 2002 Chevrolet Trailblazer Ext with our Rear Differential Cover Gasket for $11.99.

Felpro – Felpro Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, RDS 55028-1 (Part No.RDS 55028-1)

Felpro Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, RDS 55028-1

from

$11.99
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
See More

Top-Rated Differential Brands For Your 2002 Chevrolet Trailblazer Ext

When it comes to finding the perfect Differential for your 2002 Chevrolet Trailblazer Ext, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 11 trusted brands. We carry the most popular Differential brands including Felpro, National, and Motive Gear, and more, all known for their exceptional customer ratings (average brand rating of 4.6 stars) and competitive prices, as low as $6.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 2002 Chevrolet Trailblazer Ext, providing peace of mind with parts that meet or exceed OEM standards.

Popular Felpro 2002 Chevrolet Trailblazer Ext Differentials

If you’re looking for a top-quality Differential for your 2002 Chevrolet Trailblazer Ext, Advance Auto Parts has exactly what you need with our selection of Felpro Differentials. We have 2 Felpro Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $11.99 and an average cost of $27.99, you’ll find the perfect Differential for your needs and budget. Felpro Differentials for the 2002 Chevrolet Trailblazer Ext come highly rated, with over 199 customer reviews and an impressive average rating of 4.6 stars. Choosing a Felpro Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 55479
from $43.99
(4)
Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 55479
“Right part, great fit ,flimsy packing”
Felpro Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, RDS 55028-1
from $11.99
(195)
Felpro Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, RDS 55028-1
“Product easy to put on and easy to work with worked great so far”

Top-Quality National 2002 Chevrolet Trailblazer Ext Differentials

For those in search of a high-quality Differential for their 2002 Chevrolet Trailblazer Ext, Advance Auto Parts offers a great selection of National Differentials. With 3 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 $18.29, with an average price of $50.26, giving you a range of options to suit your budget. Backed by over 45 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.
National Shaft Repair Sleeve, 99139
from $41.49
(1)
National Shaft Repair Sleeve, 99139
“used these speedy sleeves on the front axle of my Kubota with the wheel seals,saved me from spending 15 times more on the axle’s, Thank’s”
National Multi-Purpose Bearing, A-18
from $18.29
(36)
National Multi-Purpose Bearing, A-18
“High quality.”
National Axle Differential Bearing & Seal Kit, RA-321-C
from $90.99
(8)
National Axle Differential Bearing & Seal Kit, RA-321-C
“got exactly what i ordered. thanks.”

FAQs for 2002 Chevrolet Trailblazer Ext Differentials

What are the best-selling Differentials for 2002 Chevrolet Trailblazer Exts?

Out of 75 Differentials that fit 2002 Chevrolet Trailblazer Exts, the following parts are the top sellers:

What’s the price range for 2002 Chevrolet Trailblazer Ext Differentials?

The prices of Differentials for the 2002 Chevrolet Trailblazer Ext range from $2.99 up to $579.99 for the most premium parts.

What is the average price of a Differential for a 2002 Chevrolet Trailblazer Ext?

The average price for Differentials for the 2002 Chevrolet Trailblazer Ext is $185.57. 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 Chevrolet Trailblazer Ext model years?

Yes, we carry Differentials for 3 model years of Chevrolet Trailblazer Exts between 2003 and 2006. The following model years are the most popular for Differential purchases: 2006, 2005, 2004, and 2003.

What are the cheapest Differentials for my 2002 Chevrolet Trailblazer Ext?

The cheapest 2002 Chevrolet Trailblazer Ext Differentials we carry are:

Does Advance Auto Parts sell Differentials for any other 2002 Chevrolet models?

Yes. We stock Differentials for 34 other popular 2002 Chevrolet models. Some of the most popular are 2002 Tahoe Differentials, 2002 Impala Differentials, 2002 Silverado 1500 Differentials, 2002 Malibu Differentials, and 2002 Suburban 1500 Differentials.

What are the top-rated Differentials that fit the 2002 Chevrolet Trailblazer Ext?

Based on 648 reviews by customers, our 2002 Chevrolet Trailblazer Ext Differentials have an average customer rating of 4.4 stars. These are the highest-rated categories of Differentials for the 2002 Chevrolet Trailblazer Ext and their top-rated products:

What types of Differentials do you sell for my 2002 Chevrolet Trailblazer Ext?

As of 8/2/26, these are some of the most in-demand types of Differentials for a 2002 Chevrolet Trailblazer Ext:

Can I get help with 2002 Chevrolet Trailblazer Ext Differential orders?

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

What is your return policy for Chevrolet Trailblazer Ext Differentials?

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