1973 GMC C25/C2500 Pickup Differentials

Keep Your 1973 GMC C25/C2500 Pickup in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1973 GMC C25/C2500 Pickup looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Bearings, Differential Pinion Seals, and Differential Covers. 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, Richmond Gear, and National. For example, Valvoline Differentials start at just $14.49 with an average 4.8 star rating. Richmond Gear and National offer similar pricing and quality, backed by strong customer feedback. With over 309 reviews and a solid 4 star average, you can shop with confidence knowing other GMC C25/C2500 Pickup owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1973 GMC C25/C2500 Pickup Differential at Advance Auto Parts is around $223.15, with a range that starts at $0.91 and goes up to $1,141.99. With 136 options in stock from 14 trusted brands, finding the right fit is easy. Popular picks like DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart, DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart, and Bearing Race start at just $10.99 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 1973 GMC C25/C2500 Pickup in peak condition, inside and out.

Essential 1973 GMC C25/C2500 Pickup Differentials

Yukon Gear – Set Up Bearing (Part No.56045)

Set Up Bearing

from

$153.99
M802048 set-up bearing (one bearing). No return.

Product Features:
  • Set up bearing
  • Fits M802048 pinion bearing
  • Easily slips on and off pinion journal to allow for easier pinion depth adjustment
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Richmond Gear – MiniSpool (Part No.78-1230-1)

MiniSpool

from

$151.99
MiniSpool

Yukon Gear – Zip Locker For Dana 60 With 35 Spline Axles, 4.10 & Down (Part No.34022)

Zip Locker For Dana 60 With 35 Spline Axles, 4.10 & Down

from

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

Product Features:
  • Fits Dana Spicer 60 with 35 spline axles
  • 4.10 and down ratio only
  • Forged case and 8620 internals for added strength
  • Works with a variety of air delivery systems
  • Assembled in the USA
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USA Standard Gear – Master Overhaul Kit Dana 60 and 61 Rear Differential (Part No.37021)

Master Overhaul Kit Dana 60 and 61 Rear Differential

from

$253.99
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 60 rear
  • 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, oil baffles and slingers, thread locker, marking compound with brush and gasket.
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Pro-King – Differential Pinion Nut (Part No.744A961)

Differential Pinion Nut

from

$10.49
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

Product Features:
  • All products are designed to meet or exceed OE quality, form, fit and funtion.
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Yukon Gear – 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
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Yukon Gear – Bearing Install Kit For Dana 60 Rear Differential (Part No.11031)

Bearing Install Kit For Dana 60 Rear Differential

from

$369.99
Yukon Bearing installation kits are perfect for shops & builders who have shims on the shelf and are looking to save cost over a Master Overhaul kit. This kit uses Timken bearings and races along with all high quality small parts. kit includes carrier bearings and races, pinion bearings and races, pinion seal, crush sleeve (if applicable), oil baffles and slingers (if applicable), marking compound and brush. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your ring & pinion set.

Product Features:
  • Fits Dana Spicer 60 rear
  • Included are carrier bearings and races, pinion bearings and races, pinion seal, crush sleeve , oil baffles and slingers , marking compound and brush.
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Yukon Gear – Side Gear Thrust Washer For Dana 60, 70 & 80 (Part No.33532)

Side Gear Thrust Washer For Dana 60, 70 & 80

from

$4.99
Product Features:
  • Side gear thrust washer for Dana Spicer 60, 70, 70U, 70HD and 80
  • Fits standard open differentials only
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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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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:
  • All products are designed to meet or exceed OE quality, form, fit and funtion.
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Yukon Gear – Grizzly Locker For Dana 60, 4.56 & Up, 40 Spline (Part No.28025)

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

from

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

Product Features:
  • Fits Dana Spicer 60 with 40 spline axles
  • 4.56 and up ratio only
  • Patented internal design reduces common locker failures
  • 8620 internals for added strength
  • Assembled in the USA
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Yukon Gear – Pinion Install Kit For Dana 60 Rear Differential (Part No.13032)

Pinion Install Kit For Dana 60 Rear Differential

from

$295.99
Yukon Pinion installation kits are a terrific solution for gear installation on lower mileage vehicles where the carrier bearings & races can be reused. This kit uses Timken bearings and races along with a high quality pinion seal and small parts. Included in this kit are the pinion bearings and races, pilot bearing (if applicable), crush sleeve (if applicable), complete pinion shim kit, pinion nut, thread locker, and marking compound with brush. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your pinion gear.

Product Features:
  • Fits Dana Spicer 60 rear
  • Included are pinion bearings and races, pinion seal, crush sleeve , complete pinion shim kit, and marking compound with brush.
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National – Bearing Race (Part No.HM88610)

Bearing Race

from

$15.49
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.

Product Features:
  • PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
  • SMOOTH ROTATION – Crowned raceways for even load distribution
  • OE-STYLE DESIGN – Engineered to meet OE specifications
  • COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on
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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 – Zip Locker Bulkhead Fitting (Part No.34001)

Zip Locker Bulkhead Fitting

from

$27.99
Product Features:
  • Bulkhead fitting
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Yukon Gear – Dana 60 & Dana 70 Power Lok Cross Pin Shaft (Two Needed) (Part No.33315)

Dana 60 & Dana 70 Power Lok Cross Pin Shaft (Two Needed)

from

$156.99
Dana 60 & Dana 70 Power Lok cross pin shaft (TWO needed).

Product Features:
  • Cross pin shaft
  • Fits Dana Spicer 60 and 70
  • Powr Lok positraction only
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Yukon Gear – DiffrlPinSupportBolt (Part No.33582)

DiffrlPinSupportBolt

from

$5.99
DiffrlPinSupportBolt

Yukon Gear – Standard Open Spider Gear Replacement Kit For Dana 60 And 61 With 35 Spline Axles (Part No.16085)

Standard Open Spider Gear Replacement Kit For Dana 60 And 61 With 35 Spline Axles

from

$301.99
Yukon standard open spider gear replacement kit for Dana 60 and 61 with 35 spline axles. Yukon uses higher quality materials and better techniques than OEM to ensure a longer lasting spider gear set. All components come with a one year warranty against manufacturing defects.

Product Features:
  • Spider gear kit
  • Fit Dana Spicer 60 open differential with 35 spline axles
  • Includes two side gears, two pinion gears, cross pin shaft, roll pin and spider gear thrust washers.
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Richmond Gear – Differential Cross Shaft (Part No.80-0269-1)

Differential Cross Shaft

from

$64.99
Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND!

Product Features:
  • For over 80-years, the Richmond Double-Diamond logo has represented some of the highest quality gears in the racing industry. Winners Run Richmond!
  • The superior quality of Richmond gearsets is a result of outstanding design, world class manufacturing and an extensive testing process that is performed on all products.
  • Richmond performance gearsets have been winners for decades at: NHRA, NMRA, NMCA, Daytona 500, WISSOTA and U.S. Nationals.
  • Richmond Gear is a leading manufacturer of high performance ring and pinion gearsets and drivetrain components, backed by a two year warranty.
  • Engineered to perform faster and be more reliable, Richmond performance drivetrain products are the result of a continuous research and development program combined with state-of-the-art manufacturing capabilities.
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Motive Gear – Differential Ring and Pinion (Part No.GM10.5-410)

Differential Ring and Pinion

from

$365.99


Product Features:
  • GM 14BL 10.5 R/P 4.10 MG
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Yukon Gear – Bearing Race Driver (Part No.56020)

Bearing Race Driver

from

$215.99
Bearing race driver. No return.

Product Features:
  • Bearing race driver
  • Fits M802011 race
  • All steel construction
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Yukon Gear – Spider Gear Set For GM 10.5" 14 Bolt Truck Dura Grip Posi (Part No.16167)

Spider Gear Set For GM 10.5" 14 Bolt Truck Dura Grip Posi

from

$659.99
Yukon spider gear set for GM 10.5″ 14 bolt truck Yukon Dura Grip posi. This kit does not include clutches. This kit fits Yukon Dura Grip ONLY. Will not work with factory Gov Loc.

Product Features:
  • Spider gear kit
  • Fits GM 10.5″ 14 bolt truck with Dura Grip positraction
  • Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers.
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Yukon Gear – Full-Floating, Blank 35 Spline Diameter, Non-Drilled Axle Shaft For Dana 60 (Part No.21005)

Full-Floating, Blank 35 Spline Diameter, Non-Drilled Axle Shaft For Dana 60

from

$232.99
Full-floating, 35 spline diameter, non-drilled blank axle shaft for Dana 60. 40″ inches long. Yukon 1541H alloy axles offer a strength increase over stock while retaining a low cost. Yukon 1541H axles come with a one year warranty against manufacturing defects.
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Motive Gear – Differential Gear Install Kit (Part No.D60IK)

Differential Gear Install Kit

from

$63.99


Product Features:
  • INSTLTN KIT-DANA 60 & 61
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Yukon Gear – Pinion Depth Shims For 10.5" GM 14 Bolt Truck (Part No.55058)

Pinion Depth Shims For 10.5" GM 14 Bolt Truck

from

$37.99
14T GM pinion shim kit.

Product Features:
  • Pinion depth shims for GM 10.5″ 14 bolt truck
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Yukon Gear – Redi-Sleeve Yoke Saver For 8.75" C, 9.25" C, Dana 60, Dana 61, Dana 70, Dana 70U, Dana 70HD (Part No.30228)

Redi-Sleeve Yoke Saver For 8.75" C, 9.25" C, Dana 60, Dana 61, Dana 70, Dana 70U, Dana 70HD

from

$37.99
Replacement redi-sleeve yoke saver for 8.75″ c, 9.25″ c, Dana 60, Dana 61, Dana 70, Dana 70U, Dana 70HD .Yukon Mighty seal.

Product Features:
  • Redi-Sleeve yoke saver
  • Fits Chrysler 8.75″ and 9.25″ rear, Dana Spicer 60, 70, 70U and 70HD
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Yukon Gear – 10.5" GM 14 Bolt Truck Ring Gear Bolt (Part No.33050)

10.5" GM 14 Bolt Truck Ring Gear Bolt

from

$11.99
10.5″ GM 14 bolt truck ring gear bolt 4.56 & up. 9/16″ x 18. 2.522″ overall length.

Product Features:
  • Ring gear bolt for GM 10.5″ 14 bolt truck
  • 4.56 and up ratio
  • 1/2″ x 18 thread
  • 2.522″ overall length
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Driveworks – Tapered Cone Wheel Bearing Assembly (Part No.S-387-AS)

Tapered Cone Wheel Bearing Assembly

from

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

Product Features:
  • Brand may vary by location
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Most Popular Differential Bearings for 1973 GMC C25/C2500 Pickups

Enhance your 1973 GMC C25/C2500 Pickup with one of the 4 Differential Bearings we have in stock, starting at just $8.49.

National – Bearing Race (Part No.382A)

Bearing Race

from

$10.99
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.

Product Features:
  • PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
  • SMOOTH ROTATION – Crowned raceways for even load distribution
  • OE-STYLE DESIGN – Engineered to meet OE specifications
  • COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on
See More

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

Tapered Roller Bearing Cone

from

$19.99
Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.

Product Features:
  • PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
  • SMOOTH ROTATION – Crowned raceways and rollers for even load distribution
  • OE-STYLE DESIGN – Engineered to meet OE specifications
  • COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on
See More

National – Bearing Race (Part No.LM501310)

Bearing Race

from

$8.49
Product Features:
  • PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
  • SMOOTH ROTATION: Crowned raceways for even load distribution
  • OE-STYLE DESIGN: Engineered to meet OE specifications
  • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
See More

Best-Selling 1973 GMC C25/C2500 Pickup Differential Pinion Seals

Upgrade your C25/C2500 Pickup with one of our 3 best-selling Differential Pinion Seals.

Yukon Gear – Pinion Seal For GM 14T (Part No.30023)

Pinion Seal For GM 14T

from

$19.99
Pinion seal for GM 14T.Yukon Mighty seal.

Product Features:
  • Pinion seal
  • Fits 1998 and down GM 10.5″ 14 bolt truck
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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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FAG US – Shaft Seal (Part No.SS2776)

Shaft Seal

from

$19.79
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-Quality Differential Covers for 1973 GMC C25/C2500 Pickups

Choose a high-quality OEM or aftermarket Differential Cover for GMC C25/C2500 Pickups and enjoy top-notch performance from $59.99.

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
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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
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Top Picks for 1973 GMC C25/C2500 Pickup Rear Differential Cover Gaskets

Invest in one of our 4 durable Rear Differential Cover Gaskets for your 1973 GMC, knowing you’re getting trusted brands and expert craftsmanship.

Mr. Gasket – Differential Gasket (Part No.84B)

Differential Gasket

from

$20.99
Mr. Gasket Axle Housing/Differential Cover or Rear End Gaskets are manufactured from a .047 inch thick cellulose/nitrile composite gasket material for excellent sealing and durability. They are precision die-cut for an excellent fit. Fits 1964-1970 Chevrolet 8.2 inch 10 bolt & 1970-1981 GM 8.5 inch ring gear

Product Features:
  • .047″ thick cellulose/nitrile composite gasket material
  • Precision die cut
  • Reusable
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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
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Yukon Gear – GM 10.5′ 14 Bolt Truck Cover Gasket (Part No.23016)

GM 10.5' 14 Bolt Truck Cover Gasket

from

$13.99
14T cover gasket.

Product Features:
  • Cover gasket
  • Fits GM 10.5″ 14 bolt truck
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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:
  • All products are designed to meet or exceed OE quality, form, fit and funtion.
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Top-Rated Differential Oil for 1973 GMC C25/C2500 Pickups

Make a smart move for your 1973 GMC C25/C2500 Pickup with products all priced from $11.99 to $148.99.

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

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

from

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

Product Features:
  • Formulated with full-synthetic base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
  • Enhanced anti-shudder protection for smooth shifting and maximum power transfer
  • Developed with anti-wear technology to help improve transmission durability
  • Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
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Valvoline – DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (Part No.798153)

DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart

from

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

Product Features:
  • Formulated with premium base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
  • Enhanced anti-shudder protection for smooth shifting and maximum power transfer
  • Developed with anti-wear technology to help improve transmission durability
  • Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
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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
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Top-Rated Differential Brands For Your 1973 GMC C25/C2500 Pickup

When it comes to finding the perfect Differential for your 1973 GMC C25/C2500 Pickup, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 14 trusted brands. We carry the most popular Differential brands including Valvoline, Richmond Gear, and National, and more, all known for their exceptional customer ratings (average brand rating of 4.8 stars) and competitive prices, as low as $10.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1973 GMC C25/C2500 Pickup, providing peace of mind with parts that meet or exceed OEM standards.

Popular Valvoline 1973 GMC C25/C2500 Pickup Differentials

If you’re looking for a top-quality Differential for your 1973 GMC C25/C2500 Pickup, 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 1973 GMC C25/C2500 Pickup 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 Richmond Gear 1973 GMC C25/C2500 Pickup Differentials

For those in search of a high-quality Differential for their 1973 GMC C25/C2500 Pickup, Advance Auto Parts offers a great selection of Richmond Gear Differentials. With 1 Richmond Gear 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 $350.99, giving you a range of options to suit your budget. Backed by over 2 customer ratings and an average rating of 4.5 stars, Richmond Gear Differentials provide both reliability and excellent performance. Choosing a Richmond Gear Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Differential Ring And Pinion
from $350.99
(2)
Differential Ring And Pinion
“I have a Chevy Impala 07 that runs on 3 cylinders when not needing the power of 6, and the new plugs have significantly provided an inexpensive tuneup”

FAQs for 1973 GMC C25/C2500 Pickup Differentials

What are the best-selling Differentials for 1973 GMC C25/C2500 Pickups?

Out of 136 Differentials that fit 1973 GMC C25/C2500 Pickups, the following parts are the top sellers:

What’s the price range for 1973 GMC C25/C2500 Pickup Differentials?

The prices of Differentials for the 1973 GMC C25/C2500 Pickup range from $0.91 up to $1,141.99 for the most premium parts.

What is the average price of a Differential for a 1973 GMC C25/C2500 Pickup?

The average price for Differentials for the 1973 GMC C25/C2500 Pickup is $223.15. 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 C25/C2500 Pickup model years?

Yes, we carry Differentials for 6 model years of GMC C25/C2500 Pickups between 1967 and 1974. The following model years are the most popular for Differential purchases: 1974, 1972, 1971, 1970, 1969, 1968, and 1967.

What are the cheapest Differentials for my 1973 GMC C25/C2500 Pickup?

The cheapest 1973 GMC C25/C2500 Pickup Differentials we carry are:

Does Advance Auto Parts sell Differentials for any other 1973 GMC models?

What types of Differentials do you sell for my 1973 GMC C25/C2500 Pickup?

As of 11/2/25, these are some of the most in-demand types of Differentials for a 1973 GMC C25/C2500 Pickup:

Can I get help with 1973 GMC C25/C2500 Pickup 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 C25/C2500 Pickup Differentials?

Advance Auto Parts keeps returns simple. For new GMC C25/C2500 Pickup Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.