1985 GMC S15 Differentials

Please Select your Vehicle to See Exact Fit Parts

Keep Your 1985 GMC S15 in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1985 GMC S15 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Rear Housing Cover Gaskets, Differential Oil, and Rear Differential 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 National, Dorman, and Driveworks. For example, National Differentials start at just $11.99 with an average 4.3 star rating. Dorman and Driveworks offer similar pricing and quality, backed by strong customer feedback. With over 2,448 reviews and a solid 4 star average, you can shop with confidence knowing other GMC S15 owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1985 GMC S15 Differential at Advance Auto Parts is around $279.83, with a range that starts at $2.49 and goes up to $2,219.99. With 181 options in stock from 15 trusted brands, finding the right fit is easy. Popular picks like Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, Multi-Purpose Bearing, and Multi-Purpose Bearing start at just $8.99 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 1985 GMC S15 in peak condition, inside and out.

Looking for the perfect Differential for your 1985 GMC S15? You’re in the right place. Below, you’ll find links to various types of Differentials that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Differentials, ensuring durability and a precise fit for your GMC S15. Whether you’re driving a 1985 model or another popular model year like 1982, 1983, 1984, 1986, 1987, 1988, 1989, and 1990, we’ve got you covered. Purchasing Differentials from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Differentials that fit your vehicle.

Essential 1985 GMC S15 Differentials

from

$1566.99

21 Piece bearing race driver set. (Box wt: 140lbs) No return.

Product Features:

Bearing race driver set
21 pieces
All steel construction

from

$153.99

Product Features:

Positraction spring kit
Fits GM 7.5″ and 7.625″ Dura Grip
Includes preload plates

from

$8.99

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.

Product Features:

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered for the sealing repair environment
Validated for fit, form and function
Unsurpassed quality you can trust

from

$229.99

Pro-King is the leading supplier of transmission and driveline products in the aftermarket. All products are designed to meet or exceed OE quality, form, fit and function.

Product Features:

Meets or exceeds OE specifications
Dual heat treating process

from

$17.99

Product Features:

CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
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

from

$194.99

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 Timken 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, 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 1983-1997 GM 7.2″ IFS
Included are pinion bearings and races, pinion seal, crush sleeve, complete pinion shim kit, and marking compound with brush.

from

$209.99

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

Product Features:

Fits 1982-1999 GM 7.5″ and 7.625″
Uses Koyo bearings and races
Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve, thread locker, marking compound with brush and gasket.

from

$17.99

Standard open side gear thrust washer for 7.2″ GM.

Product Features:

Side gear thrust washer
Fits GM 7.2″ IFS

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.

Product Features:

Direct replacement – this differential pinion shaft lock bolt matches the fit and function of the factory part on specified years, makes and models
Ideal solution – this bolt is a reliable replacement for an original part that is missing or has failed due to fatigue
Durable construction – this part is made from quality materials to ensure reliable performance and long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

from

$379.99

RngPnn

from

$399.99

GM 7.5″ & 7.6″ DURA GRIP case, bare, 3.23 & up, 26spline & 28spline.

Product Features:

Dura Grip positraction carrier case
Does not include spider gears
Fits GM 7.5″ and 7.625″
3.23 and up ratios only

from

$40.99

Product Features:

Crush sleeve eliminator kit for GM 7.5″, 7.625″ and 8.2″

from

$499.99

For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!

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

from

$149.99

Yukon standard open spider gear kit for early 7.5″ GM with 26 spline axles and large windows. Yukon uses higher quality materials and better techniques than OEM to ensure a longer lasting spider gear set. All components come with a one year warranty against manufacturing defects.

Product Features:

Spider gear kit
Fits GM 7.5″ open differential with 26 spline axles
Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers.

from

$14.99

Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.

Product Features:

PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
SMOOTH ROTATION – Crowned raceways 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

from

$194.99

Mini spools are a low-cost traction option for vehicles looking for full-time lockup. The mini spool installs into a standard open carrier and give 100% power to both tires at all times. These units are not recommended for street-driven vehicles. We recommend full spools for vehicles with large tires or high horsepower. These units come with a one year warranty against manufacturing defects.

Product Features:

Fits 2000 and up GM 7.5″ and 7.625″
28 spline

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

from

$10.99

Product Features:

Clutch guide
Fits GM 7.5″ and 7.625″ Dura Grip

from

$444.99

The Powertrax Lock-Right ultra-strength alloy locker’s straight-line performance is equal to a solid spool, but automatically unlocks in turns. Best suited for extreme off-road to severe on-road use, Powertrax Lock Right lockers replace the spider gears in your open differential carrier using basic tools and without affecting your ring and pinion settings. The whole job can be done in your driveway in a couple of hours, pin included! Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.

Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.

Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.

Powertrax® = Extreme Traction Systems!

from

$109.99

Yukon Carrier installation kits are great, low cost kit for carrier changes such as Positraction or locker upgrades. Carrier installation kit for GM 8.2″ & 8.5″ differential. This kit contains carrier bearings, races and shims.

Product Features:

Fits GM 7.5″, 7.625″ 8.2″ and 8.5″
Includes carrier bearings and races and “super” carrier shim kit

from

$21.99

Product Features:

Pinion depth shims for GM 7.5″, 7.625″, 7.6 IFS, 7.6 IRS, 7.75″, 8.2″, 1955-1964 passenger car and 12 bolt car and truck

from

$9.99

7.2″ GM 7.5″ GM & 8.2″ GM pinion seal.Yukon Mighty seal.

Product Features:

Pinion seal
Fits GM 7.2″ IFS, 1999 and down GM 7.5″ and 7.625″ and GM 8.2″
2.660″ O.D.

from

$29.99

All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of our products undergo rigid quality control processes to insure proper fit, performance and longevity. Motive Gear products can be found in the winners circle at NHRA, IHRA, NMRA, NMCA, SODA, SCORE, BITD, Ultra-4 and NASCAR events because we offer unmatched selection and quality demanded by racers and their crew chiefs – the same quality and selection demanded by DIY customers and top mechanics. With four warehouses strategically located across North America, most Motive Gear orders arrive within 2-4 days. Win with Motive Gear!

from

$239.99

Yukon Bearing installation kits are perfect for shops & builders who have shims on the shelf and are looking to save cost over a Master Overhaul kit. This kit uses Timken bearings and races along with all high quality small parts. kit includes carrier bearings and races, pinion bearings and races, pinion seal, crush sleeve (if applicable), oil baffles and slingers (if applicable), marking compound and brush. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your ring & pinion set.

Product Features:

Fits 1982-1999 GM 7.5″ and 7.625″
Included are carrier bearings and races, pinion bearings and races, pinion seal, crush sleeve , marking compound and brush.

from

$15.99

Product Features:

Carrier shim kit for Dana Spicer 30 with 30 spline axles

from

$29.99

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

Product Features:

Meets or exceeds OE specifications

from

$379.99

Product Features:

Fits GM 7.5″ and 7.625″
Aluminum girdle cover

Popular 1985 GMC S15 Differentials Categories

Differential Oil

Rear Differential Cover Gaskets

Differential Open Unit and Components

Differential Covers

Differential Pinion Shaft Lock Bolts

Differential Bearings

Differential Axle Shafts

Differential Pinion Pilot Bearings

Differential Cover Bolts

Differential Carriers

Differential Bearing Kits

Front Differential Pinion Bearings

Differential Spider Gear Kits

Differential Rebuild Kits

Differential Carrier Shim Kits

Differential Pinion Seals

Differential Clutch Packs

Differential Mini Spools

Differential Ring and Pinions

Differential End Yokes

Differential Pinion Supports

Differential Lock Assemblies

Differential Spools

Differential Carrier Bearings

Differential Lock Springs

Differential Carrier Bushings

Rear Housing Cover Gaskets

Differential Pinion Bearing Kits

Differential Ring Gear Bolts

Bearing Race Drivers

Differential Carrier Bearing Shims

Differential Crush Sleeves

Differential Side Bearing Spacers

Differential Pinion Shims

Differential Pinion Shaft Nuts

Differential Gear Install Kits

Differential Cross Pins

Differential Side Gear Thrust Washers

Differential Pinion Gear Thrust Washers

Differential Ring and Pinion Kits

Differential Clutch Pack Clips

Differential Bearing Adjuster Nut Lock Bolts

Differential Shifter Seals

Best-Selling 1985 GMC S15 Differential Oil

Upgrade your S15 with one of our 6 best-selling Differential Oil, earning an average 5 stars rating across 446 reviews.

show more show less

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

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

from

$44.99

3 Qt. Penzoil 80W90 conventional gear Oil.

Product Features:

Includes three quarts of conventional oil

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

from

$99.99

Redline Synthetic “Shock Proof” Oil. 3 Quarts.

Product Features:

Includes three quarts of Redline Shockproof oil

from

$137.99

Redline Synthetic “Shock Proof” Oil. 4 Quarts.

Product Features:

Includes four quarts of Redline Shockproof oil

Top-Quality Rear Differential Cover Gaskets for 1985 GMC S15s

Choose a high-quality OEM or aftermarket Rear Differential Cover Gasket for GMC S15s and enjoy top-notch performance from $11.99.

show more show less

from

$11.99

7.5 GM cover gasket.

Product Features:

Cover gasket
Fits GM 7.5″ and 7.625″

Top Picks for 1985 GMC S15 Differential Bearings

Invest in one of our 5 durable Differential Bearings for your 1985 GMC, knowing you’re getting trusted brands and expert craftsmanship.

show more show less

from

$16.99

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

Product Features:

CONSISTENT PERFORMANCE — Matched cup and cone components ensure consistent performance
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

from

$10.99

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$17.99

Product Features:

CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
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

from

$24.99

Product Features:

BUILT TO LAST: Advanced heat treatment process for strength
PREMIUM MATERIALS: Precision manufactured using premium-grade steel for lasting performance and extended bearing life
RELIABLE PERFORMANCE: Element size and quantity are engineered to meet or exceed the load rating of OE bearings
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

from

$21.29

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

Top-Rated Differential Covers for 1985 GMC S15s

Make a smart move for your 1985 GMC S15 with products all priced from $24.99 to $379.99.

show more show less

from

$24.99

This direct replacement differential cover matches the fit and function of the original equipment diff cover for a reliable, leak-free repair. It features a durable design, made to strict specifications, to help ensure reliable service life.

Product Features:

Direct replacement – this differential cover matches the fit and function of the original equipment diff cover on select vehicles
Reliable repair – the smart solution for fixing an existing cover that’s rusted, damaged or leaking differential fluid
Durable construction – this differential cover is made according to strict engineering standards to help ensure dependability
Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience

from

$29.99

DIFF COVER KIT

from

$379.99

Product Features:

Fits GM 7.5″ and 7.625″
Aluminum girdle cover

from

$67.99

Chrome cover for 7.5″ GM.

Product Features:

Fits GM 7.5″ and 7.625″
Chrome

from

$67.99

Product Features:

Fits GM 7.5″ and 7.625″
Steel

from

$35.99

DIFF COVER KIT

from

$29.99

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

Product Features:

Meets or exceeds OE specifications

Top-Rated Differential Brands For Your 1985 GMC S15

When it comes to finding the perfect Differential for your 1985 GMC S15, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 15 trusted brands. We carry the most popular Differential brands including National, Dorman, and Driveworks, and more, all known for their exceptional customer ratings (average brand rating of 4.3 stars) and competitive prices, as low as $6.79. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1985 GMC S15, providing peace of mind with parts that meet or exceed OEM standards.

Popular National 1985 GMC S15 Differentials

If you’re looking for a top-quality Differential for your 1985 GMC S15, Advance Auto Parts has exactly what you need with our selection of National Differentials. We have 3 National 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 $60.32, you’ll find the perfect Differential for your needs and budget. National Differentials for the 1985 GMC S15 come highly rated, with over 29 customer reviews and an impressive average rating of 4.3 stars. Choosing a National Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.

from $151.99

(2)

Axle Differential Bearing & Seal Kit

“All you need to overhaul a diff, at a good price”

from $16.99

(25)

Multi-Purpose Bearing

“Smooth”

from $11.99

(2)

Bearing Race

“Reasonable price and woks well. front diff 2006 Escalade esv”

Top-Quality Dorman 1985 GMC S15 Differentials

For those in search of a high-quality Differential for their 1985 GMC S15, Advance Auto Parts offers a great selection of Dorman Differentials. With 2 Dorman 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 $6.79, with an average price of $15.89, giving you a range of options to suit your budget. Backed by over 49 customer ratings and an average rating of 4.2 stars, Dorman Differentials provide both reliability and excellent performance. Choosing a Dorman Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.

from $24.99

(38)

Differential Cover

“Item as described and good price.”

from $6.79

(11)

Differential Shaft Lock Bolt

“great”

FAQs for 1985 GMC S15 Differentials

What are the best-selling Differentials for 1985 GMC S15s?

Out of 181 Differentials that fit 1985 GMC S15s, the following parts are the top sellers:

Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (5782376) – $8.99
Multi-Purpose Bearing (3275973) – $16.99
Multi-Purpose Bearing (3275787) – $17.99

What’s the price range for 1985 GMC S15 Differentials?

The prices of Differentials for the 1985 GMC S15 range from $2.49 up to $2,219.99 for the most premium parts.

What is the average price of a Differential for a 1985 GMC S15?

The average price for Differentials for the 1985 GMC S15 is $279.83. 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 GMC S15 model years?

Yes, we carry Differentials for 7 model years of GMC S15s between 1982 and 1990. The following model years are the most popular for Differential purchases: 1990, 1989, 1988, 1987, 1986, 1984, 1983, and 1982.

What are the cheapest Differentials for my 1985 GMC S15?

The cheapest 1985 GMC S15 Differentials we carry are:

Differential Ring Gear Bolt (10282141) – $2.49
Differential Pinion Gear Washer (10593184) – $2.49
Crush Sleeve (10715252) – $2.79
Ring Gear Bolt (20520168) – $2.99
Differential Cross Shaft (10282201) – $2.99

Does Advance Auto Parts sell Differentials for any other 1985 GMC models?

Yes. We stock Differentials for 23 other popular 1985 GMC models. Some of the most popular are 1985 Jimmy Differentials, 1985 K2500 Differentials, 1985 C2500 Differentials, 1985 K1500 Differentials, and 1985 C1500 Differentials.

What types of Differentials do you sell for my 1985 GMC S15?

As of 3/1/26, these are some of the most in-demand types of Differentials for a 1985 GMC S15:

Can I get help with 1985 GMC S15 Differential orders?

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

What is your return policy for GMC S15 Differentials?

Advance Auto Parts keeps returns simple. For new GMC S15 Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

1985 GMC S15 Differentials

Yukon Gear – Bearing Race Driver Set, 21 Piece (Part No.56030)

Yukon Gear – Posi Spring Kit For GM 7.5", With Preload Plates (Part No.33206)

Felpro – Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (Part No.RDS 55072)

Pro-King – Rear Axle Shaft Kit (Part No.AXK-235)

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

Yukon Gear – Pinion Install Kit For ’83-’97 GM 7.2" S10 And S15 Differential (Part No.13061)

USA Standard Gear – Master Overhaul Kit for the ’82-’99 GM 7.5" and 7.625" Differential (Part No.37049)

Yukon Gear – Standard Open Side Gear And Thrust Washer For 7.2" GM (Part No.33375)

Dorman – Help – Differential Shaft Lock Bolt (Part No.81048)

Richmond Gear – RngPnn (Part No.49-0044-1)

Yukon Gear – Dura Grip Case, GM 7.5 & 7.625", 3.23 & Up (Part No.20106)

Yukon Gear – Crush Sleeve Eliminator Kit For GM 7.5" & 8.2" (Part No.55047)

Powertrax – Grip LS Traction System (Part No.LS247528)

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

Yukon Gear – Standard Open Spider Gear Kit For Early 7.5" GM With 26 Spline Axles And Large Windows (Part No.16048)

National – Bearing Race (Part No.HM89210)

Yukon Gear – Mini Spool For GM 7.6" With 28 Spline Axles (Part No.32229)

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

Yukon Gear – Clutch Guide For GM 7.5" & 7.6" Dura Grip (Part No.33251)

Powertrax – Lock Right Locker (Part No.1931-LR)

Yukon Gear – 8.5" & 8.2" GM Carrier Installation Kit (Part No.57008)

Yukon Gear – Pinion Depth Shims For GM 7.5", 7.75", 8.2" & 12 Bolt Truck (Part No.55008)

Yukon Gear – 7.2" GM 7.5" GM & 8.2" GM Pinion Seal (Part No.30192)

Motive Gear – Differential Gear Install Kit (Part No.GM7.2IKF)

Yukon Gear – Bearing Install Kit For ’81 And Newer GM 7.5" Differential (Part No.11062)

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

Pro-King – Differential Carrier Cover (Part No.741A758)

Yukon Gear – Aluminum Girdle Cover For GM 7.5" & 7.625" (Part No.32118)

Felpro – Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (Part No.RDS 55072)

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

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

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

Yukon Gear – Redline Synthetic "Shock Proof" Oil With Positraction Additive – 4 Quarts (Part No.15005)

Yukon Gear – Redline Synthetic "Shock Proof" Oil – 3 Quarts (Part No.15000)

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

Yukon Gear – 7.5 GM Cover Gasket (Part No.23018)

National – Multi-Purpose Bearing (Part No.A-6)

Driveworks – Taper Bearing Cone (Part No.S-LM-501349)

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

National – Multi-Purpose Bearing (Part No.206)

Schaeffler – Bearing – TRB (Tapered Roller Bearing) (Part No.KT5)

Dorman – Differential Cover (Part No.697-701)

ATP – DIFF COVER KIT (Part No.111102)

Yukon Gear – Aluminum Girdle Cover For GM 7.5" & 7.625" (Part No.32118)

Yukon Gear – Chrome Cover For 7.5" GM (Part No.32014)

Yukon Gear – Steel Cover For GM 7.5" & 7.625" (Part No.32331)

ATP – DIFF COVER KIT (Part No.111101)

Pro-King – Differential Carrier Cover (Part No.741A758)