1985 GMC G3500 Differentials

Keep Your 1985 GMC G3500 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 G3500 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Bearings, Rear Differential Cover Gaskets, 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 National, FELPRO, and DriveWorks. For example, National Differentials start at just $10.99 with an average 4.3 star rating. FELPRO and DriveWorks offer similar pricing and quality, backed by strong customer feedback. With over 957 reviews and a solid 4 star average, you can shop with confidence knowing other GMC G3500 owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1985 GMC G3500 Differential at Advance Auto Parts is around $262.25, with a range that starts at $1.89 and goes up to $1,487.99. With 291 options in stock from 13 trusted brands, finding the right fit is easy. Popular picks like DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart, DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart, and Tapered Cone/Cup Wheel Bearing Set start at just $11.99 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 Drive Shafts and Axles and Universal Joints. At Advance Auto Parts, we’re here to help you keep your 1985 GMC G3500 in peak condition, inside and out.

Essential 1985 GMC G3500 Differentials

National – Bearing Race (Part No.HM903210)

Bearing Race

from

$28.49
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
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Pro-King – Differential Internal Nest Kit (Part No.744A717)

Differential Internal Nest Kit

from

$323.99
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.
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Yukon Gear – Dana 50 Dana 60 Dana 70 & Dana 80 Roll Pin, 0.225" Dia, For X/P Shaft, 1.87" Lng (Part No.33327)

Dana 50 Dana 60 Dana 70 & Dana 80 Roll Pin, 0.225" Dia, For X/P Shaft, 1.87" Lng

from

$7.99
Dana 50 Dana 60 Dana 70 & Dana 80 roll PIN, 0.225″ DIA, for X/P shaft, 1.87″ LNG.

Product Features:
  • Roll pin for Dana Spicer 50, 60, 70, 70U, 70HD and 80
  • 0.225″ diameter
  • 1.870″ long
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Yukon Gear – Dana 60, Dana 70 & Dana 80 Cover Bolt (Part No.33235)

Dana 60, Dana 70 & Dana 80 Cover Bolt

from

$5.99
3/8″ cover bolt, Dana 60, Dana 70 & Dana 80.

Product Features:
  • Cover bolt for Dana Spicer 60, 70 and 80
  • 3/8″
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Yukon Gear – Seal Housing For Dana 60, Zip Locker, With O-Rings (Part No.34039)

Seal Housing For Dana 60, Zip Locker, With O-Rings

from

$79.99
Seal housing for Dana 60, Zip locker, with o-rings.

Product Features:
  • Seal housing for Dana Spicer 60
  • Includes o-rings
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Yukon Gear – Adapter Sleeve Fro GM 11.5" & 10.5" 14 Bolt Truck Yokes To Use Triple Lip Pinion Seal (Part No.41209)

Adapter Sleeve Fro GM 11.5" & 10.5" 14 Bolt Truck Yokes To Use Triple Lip Pinion Seal

from

$29.99
Product Features:
  • Adapter sleeve
  • Fits GM 10.5″ 14 bolt truck and GM 11.5″
  • Converts to triple lip seal
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Yukon Gear – Replacement Carrier Shim Kit For Dana 70 & 70HD (Part No.55019)

Replacement Carrier Shim Kit For Dana 70 & 70HD

from

$126.99
Product Features:
  • Carrier shim kit
  • Fits Dana Spicer 70 and 70HD
See More

Yukon Gear – Pinion Install Kit For Dana 70-U Differential (Part No.13035)

Pinion Install Kit For Dana 70-U Differential

from

$349.99
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, 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 Dana Spicer 70U
  • Included are pinion bearings and races, pinion seal, pinion nut, complete pinion shim kit, and marking compound with brush.
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Yukon Gear – GM 9.5" Ring Gear Bolt (Part No.33047)

GM 9.5" Ring Gear Bolt

from

$12.99
GM 9.5″ ring gear bolt. 12mm x 1.5.

Product Features:
  • Ring gear bolt for GM 9.2″
  • 12mm x 1.5
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Motive Gear – Differential Crush Sleeve (Part No.26008741)

Differential Crush Sleeve

from

$12.99


Product Features:
  • CRUSH SLEEVE 14 BOLT 10.5 (3124) 1989 UP MIN ORDER 1000
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Yukon Gear – Dana 70 & Dana 80 Standard Open Cross Pin Shaft (Part No.33324)

Dana 70 & Dana 80 Standard Open Cross Pin Shaft

from

$69.99
Dana 70 & Dana 80 standard Open cross pin shaft, one piece case.

Product Features:
  • Cross pin shaft
  • Fits Dana Spicer 70 and 80
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USA Standard Gear – Standard Spider Gear Set For 33 Spline GM 9.5" And Pre ’06 GM 9.25IFS (Part No.39029)

Standard Spider Gear Set For 33 Spline GM 9.5" And Pre '06 GM 9.25IFS

from

$214.99
Product Features:
  • Spider gear kit
  • Fits GM 9.5″ open differential
  • Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers.
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Yukon Gear – Preload Spacer For Dana 70 (Part No.55070)

Preload Spacer For Dana 70

from

$9.99
Product Features:
  • Preload spacer
  • Fits Dana Spicer 70
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USA Standard Gear – Master Overhaul Kit for the ’79-’97 GM 9.5" Differential (Part No.37062)

Master Overhaul Kit for the '79-'97 GM 9.5" Differential

from

$389.99
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 1997 and down GM 9.5″
  • 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.
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Yukon Gear – Differential (Part No.26039)

Differential

from

$869.99
Differential

Yukon Gear – Eaton Positraction Shim Kit For 10.5" GM 14 Bolt Truck (Part No.16113)

Eaton Positraction Shim Kit For 10.5" GM 14 Bolt Truck

from

$78.99
Eaton positraction shim kit for GM 14T.

Product Features:
  • Shim kit
  • Fits GM 10.5″ 14 bolt truck Eaton positraction
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National – Multi-Purpose Bearing (Part No.A-42)

Multi-Purpose Bearing

from

$41.99
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
See More

USA Standard Gear – Ring & Pinion Gear Set For 10.5" GM 14 Bolt Truck In A 4.11 Ratio (Part No.36183)

Ring & Pinion Gear Set For 10.5" GM 14 Bolt Truck In A 4.11 Ratio

from

$389.99
USA Standard ring & pinion sets are the right choice to add confidence to your install. USA Standard Gear offers a full line of ring & pinion sets for a variety of common & hard to find applications. USA standard gear offers a standard one year warranty against defects on their ring & pinion sets.

Product Features:
  • Fits GM 10.5″ GM 14 bolt truck
  • 10.50″ ring gear diameter
  • 30 spline pinion
  • 12 ring gear bolts
  • 4.11 ratio
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Yukon Gear – Pinion Nut (Part No.33152)

Pinion Nut

from

$9.99
Pinion nut for GM 7.2″ IFS, 7.5″, 7.6″, 7.6″ IFS, 8.0″, 8.25″, 8.5″, 8.6″, 9.25″ IFS, 9.5″ & Oldsmobile Dropouts. 1 1/4″ socket, 7/8″ x 14 thread.

Product Features:
  • Pinion nut for GM 7.2″, 7.5″, 7.625″, 8.0″, 8.25″ IFS, 8.5″, 8.6″, 9.25″ IFS and 9.5″
  • 7/8″ x 14 thread
  • 1 1/4″ socket
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Yukon Gear – 1541H Alloy 8 Lug Rear Axle For GM 9.5" ’81-’95 Truck And ’83-’96 G30 (Part No.21252)

1541H Alloy 8 Lug Rear Axle For GM 9.5" '81-'95 Truck And '83-'96 G30

from

$299.99
Yukon 1541H alloy 8 lug rear axle for GM 9.5″ ’81-’95 truck and ’83-’96 G30 with a length of 32-3/4″ inches and 33 splines. 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 C-clip axle.

Product Features:
  • 33 spline
  • 8 lug
  • 32.75″ long
  • Fits GM 9.5″ in 1981-1995 truck and 1983-1996 G30 van
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Yukon Gear – Dana 60 Pinion Gear Thrust Washer, Standard Open & Tracloc (Also 8.75" Chrysler Std) Dana 70 2Pc (Part No.33287)

Dana 60 Pinion Gear Thrust Washer, Standard Open & Tracloc (Also 8.75" Chrysler Std) Dana 70 2Pc

from

$5.99
Dana 60 pinion gear Thrust washer, standard Open & TracLoc (also 8.75″ Chrysler STD) Dana 70 2PC.

Product Features:
  • Pinion gear thrust washer for Dana Spicer 60
  • Fits standard open and Trac Loc applications
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Yukon Gear – Bearing Install Kit For ’88 And Older 10.5" GM 14 Bolt Truck Differential (Part No.11056)

Bearing Install Kit For '88 And Older 10.5" GM 14 Bolt Truck Differential

from

$369.99
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 1988 and down GM 10.5″ 14 bolt truck
  • Included are carrier bearings and races, pinion bearings and races, pinion seal, crush sleeve, pilot bearing, marking compound and brush.
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Yukon Gear – Zip Locker Bulkhead Fitting (Part No.34001)

Zip Locker Bulkhead Fitting

from

$27.99
Product Features:
  • Bulkhead fitting
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Yukon Gear – Replacement Carrier Shim Kit For Dana 60, 70, 70HD, 70U & 80 (Part No.55011)

Replacement Carrier Shim Kit For Dana 60, 70, 70HD, 70U & 80

from

$13.99
Product Features:
  • Carrier shim kit for Dana Spicer 60, 70, 70HD, 70U and 80
See More

Motive Gear – Differential Pinion Seal (Part No.9316)

Differential Pinion Seal

from

$16.49
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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Yukon Gear – Grizzly Locker For Dana 60, 4.56 & Up, 40 Spline (Part No.28025)

Grizzly Locker For Dana 60, 4.56 & Up, 40 Spline

from

$1191.99
The Yukon Grizzly Locker is the ultimate in locking differentials for street, off-road, & drag racing. Grizzly Lockers provide 100% power to both tires, while still allowing for disengagement while negotiating turns. The Yukon Grizzly locker is a mechanical locking differential. It features a forged case and 8620 internals for maximum strength. It’s patented design reduces common locker failures. All units assembled in the USA! All Grizzly Lockers are backed by the best warranty in the business! Yukon covers the replacement unit and covers any collaterally damaged parts and associated labor, up to $2,000! This is a narrow case locker. If you have a wide housing, please order two DS 42563 with your locker. This locker is ABS compatible.

Product Features:
  • Fits Dana Spicer 60 with 40 spline axles
  • 4.56 and up ratio only
  • Patented internal design reduces common locker failures
  • 8620 internals for added strength
  • Assembled in the USA
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Yukon Gear – Zip Locker For Dana 60 With 35 Spline Axles, 4.56 & Up (Part No.34024)

Zip Locker For Dana 60 With 35 Spline Axles, 4.56 & Up

from

$1487.99
The Yukon Zip Locker is the latest in on-demand traction. Its air-operated design allows you to switch from an open differential to 100% lockup when you need it, giving you the ultimate in driver selectability. The Yukon Zip locker is an air operated locker that provides selectable traction for off road or street use. This unit features 4320 Chrome Moly internals for added strength. Assembled in the USA! compressor sold separately. All Zip Lockers are backed by the best warranty in the business! All Zip Lockers come with a six (6) year warranty, including any collaterally damaged parts and associated labor, up to $2,000, for the first two (2) years. This is a narrow case locker. If you have a wide housing, please order two DS 42563 with your locker. This locker is ABS compatible.

Product Features:
  • Fits Dana Spicer 60 with 35 spline axles
  • 4.56 and up ratio only
  • Forged case and 8620 internals for added strength
  • Works with a variety of air delivery systems
  • Assembled in the USA
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Yukon Gear – Chrome Replacement Cover For Dana 60 And 61 Standard Rotation (Part No.32005)

Chrome Replacement Cover For Dana 60 And 61 Standard Rotation

from

$89.99
Chrome replacement cover for Dana 60 and 61(not reverse rotation!).

Product Features:
  • Fits standard rotation Dana Spicer 60
  • Chrome
See More

Popular 1985 GMC G3500 Differentials Categories

Most Popular Differential Bearings for 1985 GMC G3500s

Enhance your 1985 GMC G3500 with one of the 10 Differential Bearings we have in stock, starting at just $8.49.

National – Bearing Race (Part No.382A)

Bearing Race

from

$10.99
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
See More

Driveworks – Tapered Cone/Cup Wheel Bearing Set (Part No.S-A-35)

Tapered Cone/Cup Wheel Bearing Set

from

$26.99
Value-priced bearing meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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Driveworks – Tapered Cone Wheel Bearing Assembly (Part No.S-387-AS)

Tapered Cone Wheel Bearing Assembly

from

$18.49
Value-priced bearing meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
See More

National – Tapered Roller Bearing Cone (Part No.LM501349)

Tapered Roller Bearing Cone

from

$19.99
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

National – Bearing Race (Part No.LM501310)

Bearing Race

from

$8.49
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
See More

National – Bearing Race (Part No.382S)

Bearing Race

from

$17.79
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
See More

National – Tapered Roller Bearing Cone (Part No.JLM506849A)

Tapered Roller Bearing Cone

from

$38.99
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

FAG US – Cone (Part No.KM86649)

Cone

from

$24.29
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
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Yukon Gear – 9.25" Chrysler, Dana 60 Semi-Float X/P Bolt, 80 & Up, 5/16" Head, Tapered Shoulder (Part No.33238)

9.25" Chrysler, Dana 60 Semi-Float X/P Bolt, 80 & Up, 5/16" Head, Tapered Shoulder

from

$9.99
Product Features:
  • Cross pin bolt for Dana Spicer 60 with c-clip axles
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FAG US – Cup (Part No.LM501310)

Cup

from

$9.99
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
See More

Best-Selling 1985 GMC G3500 Rear Differential Cover Gaskets

Upgrade your G3500 with one of our 2 best-selling Rear Differential Cover Gaskets, earning an average 5 stars rating across 1 reviews.

Felpro – Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (Part No.RDS 6014)

Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket

from

$17.99
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
  • 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
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Yukon Gear – GM 10.5′ 14 Bolt Truck Cover Gasket (Part No.23016)

GM 10.5' 14 Bolt Truck Cover Gasket

from

$13.99
14T cover gasket.

Product Features:
  • Cover gasket
  • Fits GM 10.5″ 14 bolt truck
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Top-Quality Rear Housing Cover Gaskets for 1985 GMC G3500s

Choose a high-quality OEM or aftermarket Rear Housing Cover Gasket for GMC G3500s and enjoy top-notch performance from $8.99.

Felpro – Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket (Part No.RDS 55387)

Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket

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
See More

Top Picks for 1985 GMC G3500 Differential Covers

Invest in one of our 8 durable Differential Covers for your 1985 GMC, knowing you’re getting trusted brands and expert craftsmanship.

Dorman – Differential Cover (Part No.697-711)

Differential Cover

from

$63.99
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
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Yukon Gear – Steel Cover For Dana 70 (Part No.32322)

Steel Cover For Dana 70

from

$149.99
Product Features:
  • Fits Dana Spicer 70
  • Steel
See More

Yukon Gear – Steel Cover For GM 10.5" 14 Bolt Truck (Part No.32345)

Steel Cover For GM 10.5" 14 Bolt Truck

from

$92.99
Product Features:
  • Fits GM 10.5″ 14 bolt truck
  • Steel
See More

Yukon Gear – Chrome Cover For 10.5" GM 14 Bolt Truck (Part No.32013)

Chrome Cover For 10.5" GM 14 Bolt Truck

from

$59.99
Chrome cover for GM 14T.

Product Features:
  • Fits GM 10.5″ 14 bolt truck
  • Chrome
See More

Yukon Gear – Steel Cover For Dana 60 Standard Rotation (Part No.32321)

Steel Cover For Dana 60 Standard Rotation

from

$114.99
Product Features:
  • Fits standard rotation Dana Spicer 60
  • Steel
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Yukon Gear – Hardcore Diff Cover For Dana 50, Dana 60 & Dana 70 (Part No.32352)

Hardcore Diff Cover For Dana 50, Dana 60 & Dana 70

from

$288.99
Product Features:
  • Nodular iron for added strength
  • Thick design
  • Durable powder coat finish
  • Magnetic drain plug
  • Made in USA
  • High strength stainless steel fasteners
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Yukon Gear – Polished Aluminum Replacement Cover For Dana 60 (Part No.32024)

Polished Aluminum Replacement Cover For Dana 60

from

$269.99
Polished aluminum replacement cover for Dana 60 (standard rotation only).

Product Features:
  • Fits standard rotation Dana Spicer 60
  • Finned polished aluminum
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Yukon Gear – Chrome Replacement Cover For Dana 60 And 61 Standard Rotation (Part No.32005)

Chrome Replacement Cover For Dana 60 And 61 Standard Rotation

from

$89.99
Chrome replacement cover for Dana 60 and 61(not reverse rotation!).

Product Features:
  • Fits standard rotation Dana Spicer 60
  • Chrome
See More

Top-Rated Differential Oil for 1985 GMC G3500s

Make a smart move for your 1985 GMC G3500 with products all priced from $11.99 to $148.99.

Valvoline – DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart (Part No.822405)

DEXRON - VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart

from

$14.49
Valvoline DEXRON-VI/MERCON LV ATF is a full-synthetic transmission fluid formulated with advanced additive technology to meet and exceed the requirements of the General Motors DEXRON-VI specification. It is officially licensed and approved by GM and is fully back-serviceable and can be used wherever DEXRON-II and/or DEXRON-III are recommended. Recommended for use in the following applications: DEXRON-VI, DEXRON-III, DEXRON-II, and Allison C-4.

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 – DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (Part No.798153)

DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart

from

$11.99
Valvoline DEX/MERC ATF is a high-quality transmission fluid formulated to meet the challenging demands of many automatic transmissions. Its responsive low-temperature fluidity is beneficial in both electronic and hydraulic controlled transmissions and transaxles. Recommended for use in the following applications: MERCON*, DEXRON*-III, Ford M2C138-CJ and M2C166-H, Allison C-4 and TES-389, and Caterpillar TO-2.

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
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
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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
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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

Top-Rated Differential Brands For Your 1985 GMC G3500

When it comes to finding the perfect Differential for your 1985 GMC G3500, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 13 trusted brands. We carry the most popular Differential brands including FELPRO, National, and DriveWorks, and more, all known for their exceptional customer ratings (average brand rating of 4.6 stars) and competitive prices, as low as $8.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1985 GMC G3500, providing peace of mind with parts that meet or exceed OEM standards.

Popular FELPRO 1985 GMC G3500 Differentials

If you’re looking for a top-quality Differential for your 1985 GMC G3500, 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 $8.99 and an average cost of $13.49, you’ll find the perfect Differential for your needs and budget. FELPRO Differentials for the 1985 GMC G3500 come highly rated, with over 21 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.
Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket
from $17.99
(1)
Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket
“OEM only uses silicone , the gasket set with a thin layer of silicone is a much better sealant method”

Top-Quality National 1985 GMC G3500 Differentials

For those in search of a high-quality Differential for their 1985 GMC G3500, 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 $10.99, with an average price of $32.49, giving you a range of options to suit your budget. Backed by over 26 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.
Wheel Bearing: Direct Fit, 1 Piece
from $53.99
(20)
Wheel Bearing: Direct Fit, 1 Piece
“Very good quality part”
Bearing Race
from $10.99
(6)
Bearing Race
“Fit perfectly. No difficulty replacing my old ones.”

FAQs for 1985 GMC G3500 Differentials

What are the best-selling Differentials for 1985 GMC G3500s?

Out of 291 Differentials that fit 1985 GMC G3500s, the following parts are the top sellers:

What’s the price range for 1985 GMC G3500 Differentials?

The prices of Differentials for the 1985 GMC G3500 range from $1.89 up to $1,487.99 for the most premium parts.

What is the average price of a Differential for a 1985 GMC G3500?

The average price for Differentials for the 1985 GMC G3500 is $262.25. 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 G3500 model years?

Yes, we carry Differentials for 16 model years of GMC G3500s between 1979 and 1996. The following model years are the most popular for Differential purchases: 1996, 1995, 1994, 1993, 1992, 1991, 1990, 1989, and 1988.

What are the cheapest Differentials for my 1985 GMC G3500?

The cheapest 1985 GMC G3500 Differentials we carry are:

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

Yes. We stock Differentials for 20 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 G3500?

As of 11/2/25, these are some of the most in-demand types of Differentials for a 1985 GMC G3500:

Can I get help with 1985 GMC G3500 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 G3500 Differentials?

Advance Auto Parts keeps returns simple. For new GMC G3500 Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.