1981 GMC C3500 Differentials

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Keep Your 1981 GMC C3500 in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1981 GMC C3500 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Bearings, Rear Housing Cover Gaskets, 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 Valvoline, Felpro, and National. For example, Valvoline Differentials start at just $12.99 with an average 4.8 star rating. Felpro and National offer similar pricing and quality, backed by strong customer feedback. With over 2,118 reviews and a solid 5 star average, you can shop with confidence knowing other GMC C3500 owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1981 GMC C3500 Differential at Advance Auto Parts is around $242.79, with a range that starts at $1.89 and goes up to $1,566.99. With 177 options in stock from 13 trusted brands, finding the right fit is easy. Popular picks like Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket, 3 Qt – 80W90 Conventional Gear Oil With Posi Additive, and 3 Qt – Penzoil 80W90 Conventional Gear Oil start at just $8.29 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 1981 GMC C3500 in peak condition, inside and out.

Essential 1981 GMC C3500 Differentials

Powertrax – Lock Right Locker (Part No.1921-LR)

Lock Right Locker

from

$368.99
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!
  • See More

    Yukon Gear – High Performance Replacement Ring & Pinion Gear Set For Dana 70 In A 5.13 Ratio (Part No.24319)

    High Performance Replacement Ring & Pinion Gear Set For Dana 70 In A 5.13 Ratio

    from

    $539.99
    Yukon Ring & Pinion sets give you the confidence of knowing you’re running gears designed for the harshest of conditions. Whether it’s on the street, off-road, or at the track; Yukon ring & pinion sets deliver unrivaled performance & quality. Yukon uses the latest designs and manufacturing technologies to provide a quiet running gear that is strong and easy to set up. All Yukon ring & pinion sets come standard with a one-year warranty.

    Product Features:
    • Fits Dana Spicer 70
    • 10.50″ ring gear diameter
    • 29 spline pinion
    • 12 ring gear bolts
    • 5.13 ratio
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    Yukon Gear – 14T Side Gear Thrust Washer (Part No.33383)

    14T Side Gear Thrust Washer

    from

    $7.99
    14T side gear Thrust washer.

    Product Features:
    • Side gear thrust washer
    • Fits GM 10.5″ 14 bolt truck
    See More

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

    The Carrier Bearing Puller

    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
    See More

    Yukon Gear – Replacement Pinion Seal For Dana 44HD, Dana 60 & Dana 70 (Part No.30208)

    Replacement Pinion Seal For Dana 44HD, Dana 60 & Dana 70

    from

    $39.99
    Replacement pinion seal for Dana 44HD, Dana 60 & Dana 70 .Yukon Mighty seal.

    Product Features:
    • Pinion seal
    • Pinion seal
    • Fits Dana Spicer 44HD, 60, 70, 70U and 70HD
    See More

    Yukon Gear – Pinion Install Kit For ’89 To ’98 10.5" GM 14 Bolt Truck Differential (Part No.13059)

    Pinion Install Kit For '89 To '98 10.5" GM 14 Bolt Truck Differential

    from

    $404.99
    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 1989-1997 GM 10.5″ 14 bolt truck
    • Included are pinion bearings and races, pinion seal, crush sleeve, complete pinion shim kit, and marking compound with brush.
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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 – Replacement Standard Open Carrier Case For Dana 80, 3.73 & Down (Part No.20049)

    Replacement Standard Open Carrier Case For Dana 80, 3.73 & Down

    from

    $529.99
    Yukon replacement standard open carrier case for Dana 80, 3.73 & down, (incl ABS) 35 & 37 spline.

    Product Features:
    • Standard open carrier case
    • Fits Dana Spicer 80
    • 3.73 and down ratio only
    • Does not include spider gears
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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″
    See More

    Yukon Gear – Differential (Part No.26045)

    Differential

    from

    $1175.00
    Differential

    Driveworks – Taper Bearing Cone (Part No.S-LM-102949)

    Taper Bearing Cone

    from

    $15.49
    Value-priced bearing meets all cataloged application requirements.

    Product Features:
    • Brand may vary by location
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    Motive Gear – Differential Gear Install Kit (Part No.D80IK)

    Differential Gear Install Kit

    from

    $143.99


    Product Features:
    • MINI INSTALL KIT DANA 80
    See More

    USA Standard Gear – Master Overhaul Kit for the Dana 80 Differential (4.125" OD only). (Part No.37025)

    Master Overhaul Kit for the Dana 80 Differential (4.125" OD only).

    from

    $446.99
    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 Dana Spicer 80 with 4.125″ O.D. pinion bearing
    • 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, oil baffles and slingers, thread locker, marking compound with brush and silicone.
    See More

    Pennzoil – Synchromesh Manual Transmission Fluid, Enhances Synchronizer Performance (Part No.3501)

    Synchromesh Manual Transmission Fluid, Enhances Synchronizer Performance

    from

    $12.49
    Designed for certain manual transaxles and manual transmissions used by General Motors or Chrysler, Pennzoil Synchromesh fluid provides excellent oxidation stability and low-temperature performance. It’s formulated with high-quality paraffinic base stocks, a fluidity modifier, multifunctional performance additives, corrosion inhibitors, a foam suppressor, and a shear stable viscosity index improver additive. Pennzoil Synchromesh also offers excellent synchronizer performance and compatibility with yellow metals (such as bronze, brass, and copper components found in manual transaxles and transmissions). This product will satisfactorily lubricate General Motors or Chrysler manual transaxles and transmissions from -40 degrees C to +150 degrees C.

    Product Features:
    • Transmission fluid designed for certain manual transaxles and manual transmissions used by General Motors or Chrysler
    • Excellent low-temperature performance and oxidation stability
    • Excellent synchronizer performance
    • Excellent compatibility with yellow metals such as bronze, brass, and copper components found in manual transaxles and transmissions
    • Formulated with high-quality paraffinic base stocks, a fluidity modifier, and multifunctional performance additives
    • Meets GM Specification 998564; suitable for use in GM manual transaxles and transmissions requiring GM Part No. 12345349 or 12345577
    • Meets Chrysler specification MS-9224; suitable for use in Chrysler transaxles and transmissions requiring Part No. 0487446
    • For a full list of equipment approvals and recommendations, please consult your local Shell Technical Help Desk and always consult your owner’s manual
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    Yukon Gear – DiffrlPinSupportBolt (Part No.33582)

    DiffrlPinSupportBolt

    from

    $5.99
    DiffrlPinSupportBolt

    Motive Gear – Differential Carrier (Part No.6258336)

    Differential Carrier

    from

    $211.99


    Product Features:
    • GM10.5″ 14 BOLT OPEN EMPTY CASE 4:10 & DWN
    See More

    Yukon Gear – Replacement Carrier Shim Kit For Dana 60, 61 & 70U (Part No.55020)

    Replacement Carrier Shim Kit For Dana 60, 61 & 70U

    from

    $104.99
    Product Features:
    • Carrier shims for Dana Spicer 60 and 70U
    See More

    Motive Gear – Differential Ring and Pinion (Part No.D70-488)

    Differential Ring and Pinion

    from

    $229.99


    Product Features:
    • DANA-70 R/P 4.88 STD MG .625″ OFFSET
    See More

    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
    See More

    Motive Gear – Differential Carrier Gear Kit (Part No.707280XR)

    Differential Carrier Gear Kit

    from

    $172.99
    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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    Yukon Gear – Dana 70 & Dana 80 Pinion Gear Thrust Washer (Part No.33288)

    Dana 70 & Dana 80 Pinion Gear Thrust Washer

    from

    $7.99
    Dana 70 & Dana 80 pinion gear Thrust washer.

    Product Features:
    • Pinion gear thrust washer for Dana Spicer 70 and 80
    See More

    Pro-King – Differential Clutch Pack (Part No.717A119)

    Differential Clutch Pack

    from

    $211.99
    Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

    Product Features:
    • Meets or exceeds OE specifications
    See More

    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 – Bearing Race Driver (Part No.56019)

    Bearing Race Driver

    from

    $219.99
    Bearing race driver. No return.

    Product Features:
    • Bearing race driver
    • Fits LM104911 race
    • All steel construction
    See More

    Motive Gear – Differential Master Bearing Kit – Koyo (Part No.RA29RMK)

    Differential Master Bearing Kit - Koyo

    from

    $175.99
    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:
    • D60 BEARING SEAL & GASKET MASTER KI
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    Driveworks – Tapered Roller Bearing (Part No.S-HM-803110)

    Tapered Roller Bearing

    from

    $13.49
    Product Features:
    • Brand may vary by location
    See More

    Yukon Gear – Replacement Baffle For Dana 70 & 70HD (Part No.33003)

    Replacement Baffle For Dana 70 & 70HD

    from

    $7.99
    Product Features:
    • Oil baffle
    • Fits Dana Spicer 70 and 70HD
    See More

    Motive Gear – Differential Crush Sleeve (Part No.3977355)

    Differential Crush Sleeve

    from

    $11.99


    Product Features:
    • CRUSH SLEEVE 14 BOLT 10.5 3116
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    Most Popular Differential Bearings for 1981 GMC C3500s

    Enhance your 1981 GMC C3500 with one of the 4 Differential Bearings we have in stock, starting at just $13.99.

    National – Bearing Race (Part No.382A)

    Bearing Race

    from

    $13.99
    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

    National – Tapered Roller Bearing Cone (Part No.469)

    Tapered Roller Bearing Cone

    from

    $43.99
    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

    Schaeffler – Cone (Part No.K387-A)

    Cone

    from

    $46.99
    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

    Schaeffler – Cup (Part No.382A)

    Cup

    from

    $20.79
    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 1981 GMC C3500 Rear Housing Cover Gaskets

    Upgrade your C3500 with one of our 3 best-selling Rear Housing Cover Gaskets, earning an average 4.17 stars rating across 18 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
    See More

    Felpro – Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket (Part No.RDS 55063)

    Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket

    from

    $8.29
    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

    Felpro – Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (Part No.RDS 6095-1)

    Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket

    from

    $9.49
    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-Quality Rear Differential Cover Gaskets for 1981 GMC C3500s

    Choose a high-quality OEM or aftermarket Rear Differential Cover Gasket for GMC C3500s and enjoy top-notch performance from $3.99.

    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
    See More

    Pro-King – Differential Cover Gasket (Part No.743B303)

    Differential Cover Gasket

    from

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

    Product Features:
    • Meets or exceeds OE specifications
    See More

    Top Picks for 1981 GMC C3500 Differential Oil

    Invest in one of our 7 durable Differential Oil for your 1981 GMC, knowing you’re getting trusted brands and expert craftsmanship.

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

    MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon

    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
    See More

    Valvoline – High Performance Transmission & Differential Gear Oil: Conventional 80W-90, 1 Quart (Part No.VV831)

    High Performance Transmission & Differential Gear Oil: Conventional 80W-90, 1 Quart

    from

    $12.99
    Valvoline High Performance Gear Oil is an extreme pressure gear lubricant formulated with quality base oils and superior additives that helps protect against severe temperatures, shock loads, scuffing, scouring, corrosion and pitting in high speed, high load, high torque and high horsepower conditions.

    Product Features:
    • Formulated for reliable gear protection
    • Protects against severe temperatures to help extend service life
    • Formulated with extreme-pressure additives to minimize gear wear from shock loads
    • Helps protect against gear wear from scuffing, scouring, corrosion and pitting
    • Recommended for conventional hypoid differentials and non-synchronized manual transmissions in passenger cars, light trucks, sport utility vehicles, vans and heavy-duty trucks where an API-GL5 or GL-4 fluid is specified
    • PLEASE NOTE: Valvoline recommends SynPower Full Synthetic Gear Oil for limited slip differentials
    See More

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

    3 Qt - 80W90 Conventional Gear Oil With Posi Additive

    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
    See More

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

    3 Qt - Penzoil 80W90 Conventional Gear Oil

    from

    $44.99
    3 Qt. Penzoil 80W90 conventional gear Oil.

    Product Features:
    • Includes three quarts of conventional oil
    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
    See More

    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
    See More

    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

    Differential Covers for 1981 GMC C3500s

    Make a smart move for your 1981 GMC C3500 with products all priced from $59.99 to $288.99.

    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 – 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
    See More

    Top-Rated Differential Brands For Your 1981 GMC C3500

    When it comes to finding the perfect Differential for your 1981 GMC C3500, 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 Valvoline, Felpro, and National, and more, all known for their exceptional customer ratings (average brand rating of 4.8 stars) and competitive prices, as low as $8.29. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1981 GMC C3500, providing peace of mind with parts that meet or exceed OEM standards.

    Popular Valvoline 1981 GMC C3500 Differentials

    If you’re looking for a top-quality Differential for your 1981 GMC C3500, Advance Auto Parts has exactly what you need with our selection of Valvoline Differentials. We have 2 Valvoline Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $12.99 and an average cost of $24.49, you’ll find the perfect Differential for your needs and budget. Valvoline Differentials for the 1981 GMC C3500 come highly rated, with over 681 customer reviews and an impressive average rating of 4.8 stars. Choosing a Valvoline Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
    MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon
    from $35.99
    (446)
    MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon
    “Good quality great price”
    High Performance Transmission & Differential Gear Oil: Conventional 80W-90, 1 Quart
    from $12.99
    (235)
    High Performance Transmission & Differential Gear Oil: Conventional 80W-90, 1 Quart
    “Good quality oil. Does it’s job.”

    Top-Quality Felpro 1981 GMC C3500 Differentials

    For those in search of a high-quality Differential for their 1981 GMC C3500, Advance Auto Parts offers a great selection of Felpro Differentials. With 2 Felpro 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 $8.29, with an average price of $13.14, giving you a range of options to suit your budget. Backed by over 14 customer ratings and an average rating of 4.6 stars, Felpro Differentials provide both reliability and excellent performance. Choosing a Felpro Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
    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”

    FAQs for 1981 GMC C3500 Differentials

    What are the best-selling Differentials for 1981 GMC C3500s?

    Out of 177 Differentials that fit 1981 GMC C3500s, the following parts are the top sellers:

    What’s the price range for 1981 GMC C3500 Differentials?

    The prices of Differentials for the 1981 GMC C3500 range from $1.89 up to $1,566.99 for the most premium parts.

    What is the average price of a Differential for a 1981 GMC C3500?

    The average price for Differentials for the 1981 GMC C3500 is $242.79. 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 C3500 model years?

    Yes, we carry Differentials for 18 model years of GMC C3500s between 1979 and 1999. The following model years are the most popular for Differential purchases: 1999, 1998, 1997, 1996, 1995, 1994, 1993, 1992, and 1991.

    What are the cheapest Differentials for my 1981 GMC C3500?

    The cheapest 1981 GMC C3500 Differentials we carry are:

    Does Advance Auto Parts sell Differentials for any other 1981 GMC models?

    Yes. We stock Differentials for 18 other popular 1981 GMC models. Some of the most popular are 1981 Jimmy Differentials, 1981 K2500 Differentials, 1981 C2500 Differentials, 1981 K1500 Differentials, and 1981 C1500 Differentials.

    What types of Differentials do you sell for my 1981 GMC C3500?

    As of 3/1/26, these are some of the most in-demand types of Differentials for a 1981 GMC C3500:

    Can I get help with 1981 GMC C3500 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 C3500 Differentials?

    Advance Auto Parts keeps returns simple. For new GMC C3500 Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.