2021 GMC Sierra 1500 Differentials
Keep Your 2021 GMC Sierra 1500 in Top Shape with Quality Differentials
Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 2021 GMC Sierra 1500 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Covers, Differential Oil, and Differential Pinion Seals. 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. For example, Valvoline Differentials start at just $35.99 with an average 4.8 star rating. With over 5,798 reviews and a solid 5 star average, you can shop with confidence knowing other GMC Sierra 1500 owners approve.
Competitive Prices and Extensive Inventory
The average price for a 2021 GMC Sierra 1500 Differential at Advance Auto Parts is around $264.21, with a range that starts at $28.99 and goes up to $899.99. With 17 options in stock from 8 trusted brands, finding the right fit is easy. Popular picks like Differential Cover Assembly, Axle For ’07 And Up 9.5" GM Axle, 34.02", and Differential Cover start at just $79.99 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 2021 GMC Sierra 1500 in peak condition, inside and out.
Find Your Specific 2021 GMC Sierra 1500 Differentials
Looking for the perfect Differential for your 2021 GMC Sierra 1500? 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 Sierra 1500. Whether you’re driving a 2021 model or another popular model year like
2014,
2015,
2016,
2017,
2018,
2019,
2020,
2022, and
2023, 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 2021 GMC Sierra 1500 Differentials
Motive Gear – Differential Pinion Seal (Part No.26064029)
from
$42.99
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.
See More
Yukon Gear – Pinion Seal For ’96-’03 9.5" GM (Part No.30164)
from
$56.99
Pinion seal for ’96-’03 9.5″ GM.Yukon Mighty seal.
Product Features:
See More
Product Features:
- Pinion seal
- Fits 1997 and up GM 9.5″
Yukon Gear – Pinion Seal For 2014 & Up GM 9.5" 12 Bolt Rear And GM 9.76" Rear (Part No.30355)
from
$48.99
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:
See More
Product Features:
- Fits GM 7.5″ and 7.6″
- 7.50″ ring gear diameter
- 27 spline pinion
- 10 ring gear bolts
- 2.73 ratio
Yukon Gear – 3 Qt – 80W90 Conventional Gear Oil With Posi Additive (Part No.15003)
from
$57.99
3 Qt. Penzoil 80W90 conventional gear Oil. W/ bottle of Posi additive.
Product Features:
See More
Product Features:
- Includes three quarts of conventional oil and one 4oz bottle of Yukon positraction additive
Royal Purple – MaxGear SAE 75W90 High Performance Gear Oil w/Friction Modifier Additive, 1 QT (Part No.01300)
from
$24.99
Max Gear is recommended for truck and automotive differentials, outboard motor lower units or in rear axles or manual transmissions requiring an API fluid. Max Gear is a high performance automotive gear oil designed to provide maximum protection to heavily loaded gears while increasing power throughput through the drive train. Max Gear virtually eliminates both gear and bearing wear-even under severe squeeze film conditions caused by extremely high loads, sudden shock loads or low RPMs. Slippery, synthetic molecules not only reduce wear and friction but significantly increase Max Gear’s cold weather fluidity and lubricity, making it the ideal choice for vehicles operating in cold climates. Gears run smoother, quieter, cooler and longer without overhauls. It is noncorrosive to both ferrous and nonferrous metals.
Product Features:
See More
Product Features:
- Maximizes horsepower
- Extends gear and bearing life
- Reduces operating temperature
- Lower coefficient of friction
- Superior corrosion protection
- Separates rapidly from water
- For use with open, limited-slip and locking differential
- Contains limited-slip friction modifier
- Made in USA
Yukon Gear – Redline Synthetic "Shock Proof" Oil With Positraction Additive – 4 Quarts (Part No.15005)
from
$148.99
Redline Synthetic “Shock Proof” Oil with positraction Additive. 4 Quarts.
Product Features:
See More
Product Features:
- Includes four quarts of Redline Shockproof oil and one 4oz bottle of Yukon positraction additive
Spartan – Drive Axle Assembly; GM Truck 1500 05-07 GU5 Axle (Part No.RAXP2240A)
from
$1841.99
Remanufactured Rear Axle assemblies are completely disassembled and thoroughly cleaned and reassembled using new wear parts: gears, pinions, assembly bolts, bearings, seals, etc. Each unit is micrometer checked for proper gear mesh. Units are assembled, sealed and include backing plates, axle shafts and fluid. Axles are packaged in heavy plastic to protect the unit & aid in returning the core.
Product Features:
See More
Product Features:
- Rear axles are assembled with backing plates & axle shafts, and filled with fluid prior to shipping
- Axles are fully painted & shipped securely in environmentally safe and recyclable containers that are the perfect size for returning your original core
- Our complete Rear axle assemblies mean you just hang brakes, connect suspension & go! Your installation will be simple and trouble free
- Remember to match axle ratio to original. For 4WD rear axle must match front axle ratio
Spartan – Drive Axle Assembly; GM 1500 Posi Axle GU6 (Part No.RAXP2257B)
from
$1894.99
Remanufactured Rear Axle assemblies are completely disassembled and thoroughly cleaned and reassembled using new wear parts: gears, pinions, assembly bolts, bearings, seals, etc. Each unit is micrometer checked for proper gear mesh. Units are assembled, sealed and include backing plates, axle shafts and fluid. Axles are packaged in heavy plastic to protect the unit & aid in returning the core.
Product Features:
See More
Product Features:
- Rear axles are assembled with backing plates & axle shafts, and filled with fluid prior to shipping
- Axles are fully painted & shipped securely in environmentally safe and recyclable containers that are the perfect size for returning your original core
- Our complete Rear axle assemblies mean you just hang brakes, connect suspension & go! Your installation will be simple and trouble free
- Remember to match axle ratio to original. For 4WD rear axle must match front axle ratio
Spartan – Drive Axle Assembly; GM 1500 Posi Axle GT5 (Part No.RAXP2240D)
from
$1905.99
Remanufactured Rear Axle assemblies are completely disassembled and thoroughly cleaned and reassembled using new wear parts: gears, pinions, assembly bolts, bearings, seals, etc. Each unit is micrometer checked for proper gear mesh. Units are assembled, sealed and include backing plates, axle shafts and fluid. Axles are packaged in heavy plastic to protect the unit & aid in returning the core.
Product Features:
See More
Product Features:
- Rear axles are assembled with backing plates & axle shafts, and filled with fluid prior to shipping
- Axles are fully painted & shipped securely in environmentally safe and recyclable containers that are the perfect size for returning your original core
- Our complete Rear axle assemblies mean you just hang brakes, connect suspension & go! Your installation will be simple and trouble free
- Remember to match axle ratio to original. For 4WD rear axle must match front axle ratio
Felpro – Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (Part No.RDS 55040)
from
$16.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.
Product Features:
See More
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
Felpro – Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket (Part No.RDS 55480)
from
$52.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.
Product Features:
See More
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
Felpro – Axle Housing Cover Gasket (Part No.55498)
from
$28.99
Axle Housing Cover Gasket
National – Axle Differential Bearing & Seal Kit (Part No.RA-324-B)
from
$207.99
The National bearing & seal kit includes all the components required to complete the repair.
Product Features:
See More
Product Features:
- COMPLETE SOLUTION – Includes everything needed to complete the repair
- STRONG AND DURABLE – Controlled heat treatment process for strength and durability
- 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
- Professional technicians know they can depend on National
Yukon Gear – DiffrlPartsKit (Part No.14226)
from
$564.99
DiffrlPartsKit
USA Standard Gear – Bearing Kit For ’99-’08 GM 8.6" (Part No.58012)
from
$151.99
This kit uses Koyo 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 br
Product Features:
See More
Product Features:
- Fits 1999-2008 GM 8.6″
- Uses Koyo bearings and races
- Included are carrier bearings and races, pinion bearings and races, pinion seal, pinion nut, crush sleeve, marking compound and brush.
Yukon Gear – Bearing Install Kit For ’11 & Up GM 9.25" IFS Front Differential (Part No.11114)
from
$706.99
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:
See More
Product Features:
- Fits 2011 and up GM 9.25″ IFS
- Included are carrier bearings and races, pinion bearings and races, pinion seal, crush sleeve, marking compound and brush.
Yukon Gear – Minor Install Kit For GM 9.5" Differential (Part No.12062)
from
$175.99
Yukon Minimum installation kits are a low cost solution for gear changes in newer vehicles where the bearings can be reused. This kit uses all high quality components to ensure a smooth set up. kit includes a pinion seal, crush sleeve (if applicable), complete shim kit, marking compound and brush.
Product Features:
See More
Product Features:
- Fits 1998 and up GM 9.5″
- Included are a pinion seal, crush sleeve, complete shim kit, marking compound and brush.
Yukon Gear – Differential Parts K (Part No.12088)
from
$184.99
Differential Parts K
Yukon Gear – Minor Install Kit For GM 9.25" IFS Differential (Part No.12060)
from
$111.99
Yukon Minimum installation kits are a low cost solution for gear changes in newer vehicles where the bearings can be reused. This kit uses all high quality components to ensure a smooth set up. kit includes a pinion seal, crush sleeve (if applicable), complete shim kit, marking compound and brush.
Product Features:
See More
Product Features:
- Fits GM 9.25″ IFS
- Included are a pinion seal, crush sleeve, complete shim kit, marking compound and brush.
USA Standard Gear – Master Overhaul Kit for the ’99 & Newer GM 8.25" IFS Differential (Part No.37053)
from
$259.99
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:
See More
Product Features:
- Fits GM 8.25″ IFS
- Uses Koyo bearings and races
- Included are carrier bearings and races, pinion bearings and races, pinion seal, axle seals, complete shim kit, ring gear bolts, pinion nut, crush sleeve, thread locker, marking compound with brush and silicone.
aFe POWER – Differential Cover (Part No.46-71120A)
from
$298.99
aFe Power’s new rear differential cover brings performance engineering to the protection of your axle’s differential. This differential cover is constructed out of durable cast aluminum with reinforcing ribs for maximum strength and comes with all necessary hardware for easy installation. This cover has a raw finish with machined fins for a distinctive look.
Product Features:
See More
Product Features:
- Durable Cast Aluminum
- Magnetic Drain Plug Captures Loose Particles
- Calibration Plug Set to Factory Fill Level Eliminates Overfilling
- Built-In External and Internal Fins Dissipate Heat
Dorman – Differential Cover (Part No.697-706)
from
$59.99
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:
See More
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
Dorman – Differential Cover (Part No.697-711)
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:
See More
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
Yukon Gear – Polished Aluminum Cover For 8.6", 8.2" And 8.5" GM Rear (Part No.32030)
from
$255.99
Polished aluminum cover for 8.6″, 8.2″ and 8.5″ GM rear.
Product Features:
See More
Product Features:
- Fits GM 8.5″ and 8.6″
- Finned polished aluminum
Yukon Gear – 1541H Alloy Rear Axle For GM 8.6" (’99 -’04 With Disc Brake) (Part No.21240)
from
$298.99
Yukon 1541H alloy rear axle for GM 8.6″ (’99 -’04 w/disc brake) with a length of 33 3/4″, 6 lugs and 30 splines. for use with either 2WD or 4WD trucks. 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.
Product Features:
See More
Product Features:
- Fits 1999-2004 GM 8.6″ truck rear ford 2 wheel drive and 4 wheel drive
- 30 spline
- 33 3/4″ long
- Disc brake applications only
Spartan – Drive Axle Assembly; GM 1500 05-07 Axle GU5 (Part No.RAX2239A)
from
$1544.99
Remanufactured Rear Axle assemblies are completely disassembled and thoroughly cleaned and reassembled using new wear parts: gears, pinions, assembly bolts, bearings, seals, etc. Each unit is micrometer checked for proper gear mesh. Units are assembled, sealed and include backing plates, axle shafts and fluid. Axles are packaged in heavy plastic to protect the unit & aid in returning the core.
Product Features:
See More
Product Features:
- Rear axles are assembled with backing plates & axle shafts, and filled with fluid prior to shipping
- Axles are fully painted & shipped securely in environmentally safe and recyclable containers that are the perfect size for returning your original core
- Our complete Rear axle assemblies mean you just hang brakes, connect suspension & go! Your installation will be simple and trouble free
- Remember to match axle ratio to original. For 4WD rear axle must match front axle ratio
Pro-King – Rear Axle Shaft Kit (Part No.AXK-166)
from
$143.99
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:
See More
Product Features:
- Meets or exceeds OE specifications
- Dual heat treating process
USA Standard Gear – 30 Spline Axle for GM 8.6 2007 & Up Chevy with ABS (Part No.35173)
from
$253.99
GM 8.6 2007 & UP CHEV w/ABS 30Spline 34.25″ ( ABS Ring Not Included) .
Product Features:
See More
Product Features:
- Fits 2007 and up GM half ton truck with four wheel drive
- 30 spline
- 34 1/4″ long
- 6 lug
- Fits ABS applications
- Does not include ABS tone ring
Popular 2021 GMC Sierra 1500 Differentials Categories
Most Popular Differential Covers for 2021 GMC Sierra 1500s
Enhance your 2021 GMC Sierra 1500 with one of the 7 Differential Covers we have in stock, starting at just $79.99.
Dorman – Differential Cover Assembly (Part No.697-727)
from
$79.99
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:
See More
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
aFe POWER – Differential Cover (Part No.46-71120A)
from
$298.99
aFe Power’s new rear differential cover brings performance engineering to the protection of your axle’s differential. This differential cover is constructed out of durable cast aluminum with reinforcing ribs for maximum strength and comes with all necessary hardware for easy installation. This cover has a raw finish with machined fins for a distinctive look.
Product Features:
See More
Product Features:
- Durable Cast Aluminum
- Magnetic Drain Plug Captures Loose Particles
- Calibration Plug Set to Factory Fill Level Eliminates Overfilling
- Built-In External and Internal Fins Dissipate Heat
Yukon Gear – DiffrlCover (Part No.32365)
from
$96.99
DiffrlCover
aFe POWER – Pro Series Rear Differential Cover Red with Machined Fins (Part No.46-71140R)
from
$343.99
Pro Series Rear Differential Cover Red with Machined Fins
aFe POWER – Differential Cover (Part No.46-71120B)
from
$328.99
aFe Power’s new rear differential cover brings performance engineering to the protection of your axle’s differential. This differential cover is constructed out of durable cast aluminum with reinforcing ribs for maximum strength and comes with all necessary hardware for easy installation. Pro Series differential covers include an oil level sight glass and magnetic deep reach fill plug. This cover is finished with black powder-coating and machined fins for a distinctive look.
Product Features:
See More
Product Features:
- Durable Cast Aluminum
- Magnetic Drain and Fill Plugs Capture Loose Particles
- Calibration Plug Set to Factory Fill Level Eliminates Overfilling
- Oil Level Sight Glass for Quick/Easy Inspection
aFe POWER – Street Series Rear Differential Cover Raw with Machined Fins (Part No.46-71140A)
from
$285.99
Street Series Rear Differential Cover Raw with Machined Fins
Dorman – Differential Cover Assembly (Part No.697-496)
from
$92.99
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:
See More
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
Best-Selling 2021 GMC Sierra 1500 Differential Oil
Upgrade your Sierra 1500 with one of our 2 best-selling Differential Oil, earning an average 5 stars rating across 446 reviews.
Valvoline – MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon (Part No.773775)
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:
See More
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
Castrol – Transmax ATF/CVT Universal Transmission Fluid, Smooth Performance, 1 Gallon (Part No.15E0C8)
from
$28.99
Castrol® Transmax® ATF/CVT Universal is a premium full-synthetic transmission fluid engineered for exceptional performance in both traditional step-shifting automatic transmissions and modern continuously variable transmissions (CVTs). Featuring Castrol Smooth Drive® Technology, it ensures enhanced friction durability for seamless gear shifts and superior high-temperature protection to resist oxidation. This advanced formulation offers unmatched protection against copper corrosion, extending the life of your transmission system. Its broad compatibility covers a wide range of ATF and CVT applications, including Dexron VI, Mercon LV, Toyota WS, Honda DW-1, Nissan Matic S, and many more, making it ideal for diverse vehicle types, including hybrids. Designed to improve workshop efficiency and simplify inventory management, this fluid is a versatile solution for professional mechanics and DIY enthusiasts alike. Packaged in a convenient 1-gallon size, it delivers outstanding value and reliability for maintaining optimal transmission performance.
Product Features:
See More
Product Features:
- Enhanced friction durability for smooth transmission performance
- Superior high temperature protection to effectively resist oxidation
- Unsurpassed protection against copper corrosion
- Broad scope of vehicle applications improves workshop efficiency and inventory management
- ATF Applications: Dexron VI (Dexron III, Dexron), Mercon LV (Mercon SP, Mercon V, Mercon), JASO 1A (03), JASO 1A LV (13), Toyota T IV, Toyota T III, Toyota WS, Honda/Acura DW 1/Z 1, Nissan Matic D, Matic J, Matic S, Hyundai/Kia SP IV, SP III
- ATF Applications: Mazda ATF M-V, M-III, FZ, Mitsubishi SP IV, SP III, IIM, II, PA, J3, VW/Audi (6, 8 & 9 speed automatics), BMW/Mini (6, 8 and 9 speed automatics), Jaguar/Land Rover (6, 8 & 9 speed automatics), Porsche (6, 8 & 9 speed automatics)
- ATF Applications: Volvo (6, 8 and 9 speed automatics), Volvo Transmission Oil 97342, AT102, Mercedes-Benz (7 and 9 speed automatics)
- CVT Applications: Toyota CVT Fluid TC, Toyota CVT Fluid FE , Nissan CVT Fluid NS-1, Nissan CVT Fluid NS-2, Nissan CVT Fluid NS-3, Subaru i-CVT Fluid, Subaru i-CVT FG, Subaru Lineartronic High Torque Chain CVTF, Honda HCF-2
Top-Quality Differential Pinion Seals for 2021 GMC Sierra 1500s
Choose a high-quality OEM or aftermarket Differential Pinion Seal for GMC Sierra 1500s and enjoy top-notch performance from $48.99.
Yukon Gear – Pinion Seal For 2014 & Up GM 9.5" 12 Bolt Rear And GM 9.76" Rear (Part No.30355)
from
$48.99
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:
See More
Product Features:
- Fits GM 7.5″ and 7.6″
- 7.50″ ring gear diameter
- 27 spline pinion
- 10 ring gear bolts
- 2.73 ratio
Our Top Pick for a 2021 GMC Sierra 1500 Differential Axle Shaft
Invest in a
durable Differential Axle Shaft for your 2021 GMC, knowing you’re getting trusted brands and expert craftsmanship.
Yukon Gear – Axle For ’07 And Up 9.5" GM Axle, 34.02" (Part No.21586)
from
$299.99
2007 and up 9.5″ GM axle, 34.02″. axle shaft for ’07 & up GM truck with 9.5″ differential, 34.02″ long, 6 lug. Yukon 1541H alloy axles offer a strength increase over stock while retaining a low cost. Yukon 1541H alloy front axles come with a one year warranty against manufacturing defects.
Product Features:
See More
Product Features:
- 33 spline
- 34.02″ long
- Fits GM 9.5″ in 2007 and up truck
Rear Housing Cover Gaskets for 2021 GMC Sierra 1500s
Make a smart move for your 2021 GMC Sierra 1500 with products all priced from $28.99 to $34.99.
GM Genuine Parts – Axle Housing Cover Gasket (Part No.15860607)
from
$34.99
Axle Housing Cover Gasket
Felpro – Axle Housing Cover Gasket (Part No.55498)
from
$28.99
Axle Housing Cover Gasket
Top-Rated Differential Brands For Your 2021 GMC Sierra 1500
When it comes to finding the perfect Differential for your 2021 GMC Sierra 1500, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 8 trusted brands. We carry the most popular Differential brands including Valvoline, and more, all known for their exceptional customer ratings (average brand rating of 4.8 stars) and competitive prices, as low as $35.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 2021 GMC Sierra 1500, providing peace of mind with parts that meet or exceed OEM standards.
Popular Valvoline 2021 GMC Sierra 1500 Differentials
If you’re looking for a top-quality Differential for your 2021 GMC Sierra 1500, Advance Auto Parts has exactly what you need with our selection of Valvoline Differentials. We have 1 Valvoline Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $35.99, you’ll find the perfect Differential for your needs and budget. Valvoline Differentials for the 2021 GMC Sierra 1500 come highly rated, with over 446 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.
from
$35.99
(446)
MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon
“Good quality great price”
FAQs for 2021 GMC Sierra 1500 Differentials
What are the best-selling Differentials for 2021 GMC Sierra 1500s?
Out of 17 Differentials that fit 2021 GMC Sierra 1500s, the following parts are the top sellers:
- Differential Cover Assembly (11971199) – $79.99
- Axle For ’07 And Up 9.5" GM Axle, 34.02" (11599944) – $299.99
- Differential Cover (12264065) – $298.99
What’s the price range for 2021 GMC Sierra 1500 Differentials?
The prices of Differentials for the 2021 GMC Sierra 1500 range from $28.99 up to $899.99 for the most premium parts.
What is the average price of a Differential for a 2021 GMC Sierra 1500?
The average price for Differentials for the 2021 GMC Sierra 1500 is $264.21. 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 Sierra 1500 model years?
What are the cheapest Differentials for my 2021 GMC Sierra 1500?
The cheapest 2021 GMC Sierra 1500 Differentials we carry are:
- Transmax ATF/CVT Universal Transmission Fluid, Smooth Performance, 1 Gallon (50083698) – $28.99
- Axle Housing Cover Gasket (50251308) – $28.99
- Axle Housing Cover Gasket (50233887) – $34.99
- MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon (8150020) – $35.99
- Pinion Seal For 2014 & Up GM 9.5" 12 Bolt Rear And GM 9.76" Rear (11643084) – $48.99
Does Advance Auto Parts sell Differentials for any other 2021 GMC models?
Yes. We stock Differentials for 8 other popular 2021 GMC models. Some of the most popular are 2021 Yukon Differentials, 2021 Sierra 2500 HD Differentials, 2021 Savana 2500 Differentials, 2021 Sierra 3500 HD Differentials, and 2021 Savana 3500 Differentials.
What are the top-rated Differentials that fit the 2021 GMC Sierra 1500?
The one 2021 GMC Sierra 1500 Differential we have in stock is the Transmax ATF/CVT Universal Transmission Fluid, Smooth Performance, 1 Gallon. It costs $28.99.
What types of Differentials do you sell for my 2021 GMC Sierra 1500?
As of 3/1/26, these are some of the most in-demand types of Differentials for a 2021 GMC Sierra 1500:
Can I get help with 2021 GMC Sierra 1500 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 Sierra 1500 Differentials?
Advance Auto Parts keeps returns simple. For new GMC Sierra 1500 Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.