1979 GMC P3500 Differentials

Keep Your 1979 GMC P3500 in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1979 GMC P3500 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Axle Shafts, Rear Differential Cover Gaskets, 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 FELPRO, National, and Valvoline. For example, FELPRO Differentials start at just $8.29 with an average 4.6 star rating. National and Valvoline offer similar pricing and quality, backed by strong customer feedback. With over 90 reviews and a solid 4 star average, you can shop with confidence knowing other GMC P3500 owners approve.

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 1979 GMC P3500 in peak condition, inside and out.

Essential 1979 GMC P3500 Differentials

Yukon Gear – Repleacement Ring Gear Bolt For Dana 80 (Part No.33039)

Repleacement Ring Gear Bolt For Dana 80

from

$7.99
Repleacement ring gear bolt for Dana 80. 9/16″ x 18.

Product Features:
  • Ring gear bolt for Dana Spicer 80
  • 9/16″ x 18 thread
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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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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
See More

LuK – Differential Repair Kit (Part No.GDK325A)

Differential Repair Kit

from

$425.99
Product Features:
  • Each LuK GearBOX contains all the OE quality bearings needed for a professional transmission repair
  • LuK Differential Bearing Kits are designed to meet or exceed OEM requirements. This will ensure customer satisfaction.
  • LuK Differential Bearing Kits contain the bearings and seals needed to complete the job.
  • LuK Differential Bearing Kits include wear parts such as seals, O-rings, shaft sealing rings, support bearings and spare parts where necessary for eliminating the specific cause of failure.
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Driveworks – Tapered Roller Bearing (Part No.S-HM-807046)

Tapered Roller Bearing

from

$42.99
Product Features:
  • Brand may vary by location
See More

National – Tapered Roller Bearing Cone (Part No.HM803149)

Tapered Roller Bearing Cone

from

$36.99
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
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Yukon Gear – Replacement Standard Open Carrier Case For Dana 80, 4.10 & Up (Part No.20050)

Replacement Standard Open Carrier Case For Dana 80, 4.10 & Up

from

$564.99
Yukon replacement standard open carrier case for Dana 80, 4.10 & up, (incl ABS) 35 & 37 spline.

Product Features:
  • Standard open carrier case
  • Fits Dana Spicer 80
  • 4.10 and up ratio only
  • Does not include spider gears
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Yukon Gear – Replacement Standard Open Carrier Case For Dana 80, 4.10 & Up (Part No.20042)

Replacement Standard Open Carrier Case For Dana 80, 4.10 & Up

from

$519.99
Yukon replacement standard open carrier case for Dana 80, 4.10 & up (NOT ABS) 35 & 37 spline.

Product Features:
  • Standard open carrier case
  • Does not include spider gears
  • Fits Dana Spicer 80 with 35 or 37 spline axles
  • 4.10 and up ratio only
  • Not compatible with ABS applications
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National – Bearing Race (Part No.HM803110)

Bearing Race

from

$20.49
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
See More

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
See More

Yukon Gear – Dana 60 & Dana 70 Power Lok Clutch Set (Steel & Fiber) (Part No.16155)

Dana 60 & Dana 70 Power Lok Clutch Set (Steel & Fiber)

from

$181.99
Dana 60 & Dana 70 Power Lok clutch set (steel & fiber).

Product Features:
  • Clutch kit
  • Fit Dana Spicer 60, 70, 70U and 70HD Powr Lok positraction
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Yukon Gear – Dana 80 Tracloc Clutch Set Round Design (Part No.16157)

Dana 80 Tracloc Clutch Set Round Design

from

$502.99
Dana 80 TracLoc clutch set round design (remove 4 plates 4 V-Type).

Product Features:
  • Clutch kit
  • Fit Dana Spicer 80 Trac Loc positraction
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Dorman – General Motors Full Float Axle Shaft (Part No.630-147)

General Motors Full Float Axle Shaft

from

$280.99
Axle shaft damaged or bearings worn out? This axle shaft directly replaces the original equipment on certain vehicles, complete with all necessary application-specific installation components.

Product Features:
  • Direct replacement – this axle shaft replaces the original equipment on specific vehicle years, makes and models
  • Complete kit – each shaft includes critical installation hardware and components needed for specific vehicle applications
  • Durable construction – designed to rigorous standards and tested to ensure performance
  • Trustworthy solution – backed by team of engineers and quality control specialists in the United States
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Motive Gear – Axle Shaft (Part No.MG1774)

Axle Shaft

from

$175.99
The Motive Gear replacement axle shaft offers an OE-quality axle shaft at a fraction of the OE cost. Manufactured from 1541H material on high-tolerance CNC equipment, this axle shaft is designed to provide a perfect fit every time.

Product Features:
  • AXLE SHAFT 10.5″ 30 SPL. 37 9/16″ R.H.
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Pro-King – Differential Internal Nest Kit (Part No.743B717)

Differential Internal Nest Kit

from

$221.99
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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Pro-King – Differential Internal Nest Kit (Part No.718C717B)

Differential Internal Nest Kit

from

$422.99
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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Motive Gear – Differential Gear Install Kit (Part No.GM9.5IK)

Differential Gear Install Kit

from

$58.49


Product Features:
  • MINI-INSTLTN KT-9 1/2″ GM
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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
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Victor Reinz – Differential Cover Gasket (Part No.71-14868-00)

Differential Cover Gasket

from

$9.99
With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.

Product Features:
  • Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.
See More

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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National – Multi-Purpose Bearing (Part No.R-1581-TV)

Multi-Purpose Bearing

from

$33.99
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • PREMIUM MATERIALS — Precision manufactured using premium-grade steel for outstanding durability and performance
  • STRONG AND DURABLE — Controlled heat treatment process for strength and durability
  • 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

Yukon Gear – Pilot Bearing For 10.5" 14 Bolt Truck, 2.050" O.D. (Part No.18041)

Pilot Bearing For 10.5" 14 Bolt Truck, 2.050" O.D.

from

$57.99
Pilot bearing for 10.5″ 14 bolt truck, 2.050″ O.D.

Product Features:
  • Pilot bearing
  • Fits GM 10.5″ 14 bolt truck
  • 2.050″ O.D.
See More

Yukon Gear – High Performance Replacement Ring & Pinion Gear Set For Dana 80 In A 5.13 Ratio (Part No.24083)

High Performance Replacement Ring & Pinion Gear Set For Dana 80 In A 5.13 Ratio

from

$534.99
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 80
  • 11.25″ ring gear diameter
  • 37 spline pinion
  • 12 ring gear bolts
  • 5.13 ratio
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USA Standard Gear – Replacement Ring & Pinion Gear Set For Dana 70 In A 4.56 Ratio (Part No.36090)

Replacement Ring & Pinion Gear Set For Dana 70 In A 4.56 Ratio

from

$379.99
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 Dana Spicer 70
  • 10.50″ ring gear diameter
  • 29 spline pinion
  • 12 ring gear bolts
  • 4.56 ratio
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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

National – Bearing Race (Part No.453X)

Bearing Race

from

$23.99
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 – 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

National – Bearing Race (Part No.394A)

Bearing Race

from

$26.49
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
See More

Most Popular Differential Axle Shafts for 1979 GMC P3500s

Enhance your 1979 GMC P3500 with one of the 2 Differential Axle Shafts we have in stock, starting at just $141.99.

Motive Gear – Axle Shaft (Part No.MG1774)

Axle Shaft

from

$175.99
The Motive Gear replacement axle shaft offers an OE-quality axle shaft at a fraction of the OE cost. Manufactured from 1541H material on high-tolerance CNC equipment, this axle shaft is designed to provide a perfect fit every time.

Product Features:
  • AXLE SHAFT 10.5″ 30 SPL. 37 9/16″ R.H.
See More

Motive Gear – Axle Shaft (Part No.MG1775)

Axle Shaft

from

$141.99
The Motive Gear replacement axle shaft offers an OE-quality axle shaft at a fraction of the OE cost. Manufactured from 1541H material on high-tolerance CNC equipment, this axle shaft is designed to provide a perfect fit every time.

Product Features:
  • AXLE SHAFT GM 10.5″ 30 SPL. 31 11/16″ L.H.
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Best-Selling 1979 GMC P3500 Rear Differential Cover Gaskets

Upgrade your P3500 with one of our 3 best-selling Rear Differential Cover Gaskets, earning an average 4.75 stars rating across 14 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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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

Victor Reinz – Differential Cover Gasket (Part No.71-14868-00)

Differential Cover Gasket

from

$9.99
With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.

Product Features:
  • Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.
See More

Top-Quality Differential Pinion Seals for 1979 GMC P3500s

Choose a high-quality OEM or aftermarket Differential Pinion Seal for GMC P3500s and enjoy top-notch performance from $17.49.

National – Multi-Purpose Seal (Part No.9316)

Multi-Purpose Seal

from

$17.49
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Design type: spring loaded; multi-lip
  • Temperature range: -20 Deg. F to 300 Deg. F / -29 Deg. C to 49 Deg. C
  • Resistance to EP lubricants
  • Low swell in hydrocarbon fluids
  • Delivers quality and reliable performance for every type of repair
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FAG US – Shaft Seal (Part No.SS3147)

Shaft Seal

from

$32.49
Our wheel seals are engineered using only the highest-quality materials to meet vehicle manufacturer specificatons. We work with suppliers to design seals that meet FAG’s quality standards. Seals are designed to protect wheel end components from contamination – such as dirt, dust, and moisture – and prevent the loss of grease over the life of the bearing. The specifications for wheel seals are very demanding, and the type required depends on the specific application, position and vehicle class.

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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Top Picks for 1979 GMC P3500 Differential Oil

Invest in one of our 5 durable Differential Oil for your 1979 GMC, knowing you’re getting trusted brands and expert craftsmanship.

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
See More

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 Bearings for 1979 GMC P3500s

Make a smart move for your 1979 GMC P3500 with products all priced from $8.49 to $23.99.

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 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.453X)

Bearing Race

from

$23.99
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 – 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

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

Top-Rated Differential Brands For Your 1979 GMC P3500

When it comes to finding the perfect Differential for your 1979 GMC P3500, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 10 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 1979 GMC P3500, providing peace of mind with parts that meet or exceed OEM standards.

Popular Valvoline 1979 GMC P3500 Differentials

If you’re looking for a top-quality Differential for your 1979 GMC P3500, 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 $14.49, you’ll find the perfect Differential for your needs and budget. Valvoline Differentials for the 1979 GMC P3500 come highly rated, with over 2 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.
DEXRON - VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart
from $14.49
(2)
DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart
“I’ve used this in my 2005 2500HD since I bought the truck with 20k on it now at 280k changed every other year maybe 40k I’d put on in two years, I pu”

Top-Quality FELPRO 1979 GMC P3500 Differentials

For those in search of a high-quality Differential for their 1979 GMC P3500, 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 1979 GMC P3500 Differentials

What are the best-selling Differentials for 1979 GMC P3500s?

Out of 43 Differentials that fit 1979 GMC P3500s, the following parts are the top sellers:

What’s the price range for 1979 GMC P3500 Differentials?

The prices of Differentials for the 1979 GMC P3500 range from $1.89 up to $1,007.99 for the most premium parts.

What is the average price of a Differential for a 1979 GMC P3500?

The average price for Differentials for the 1979 GMC P3500 is $106.70. 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 P3500 model years?

Yes, we carry Differentials for 19 model years of GMC P3500s between 1980 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 1979 GMC P3500?

The cheapest 1979 GMC P3500 Differentials we carry are:

Does Advance Auto Parts sell Differentials for any other 1979 GMC models?

Yes. We stock Differentials for 12 other popular 1979 GMC models. Some of the most popular are 1979 Jimmy Differentials, 1979 K2500 Differentials, 1979 C2500 Differentials, 1979 K1500 Differentials, and 1979 C1500 Differentials.

What are the top-rated Differentials that fit the 1979 GMC P3500?

The one 1979 GMC P3500 Differential we have in stock is the Differential Ring Gear Bolt. It costs $1.89.

What types of Differentials do you sell for my 1979 GMC P3500?

As of 11/2/25, these are some of the most in-demand types of Differentials for a 1979 GMC P3500:

Can I get help with 1979 GMC P3500 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 P3500 Differentials?

Advance Auto Parts keeps returns simple. For new GMC P3500 Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.