1973 GMC C15/C1500 Pickup Differentials

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Keep Your 1973 GMC C15/C1500 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 C15/C1500 Pickup looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Covers, Rear Differential Cover Gaskets, and Differential Bearings. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Differentials from Trusted Brands

Looking for a reliable Differential? We’ve got you covered with options from brands you know and trust like National, Motive Gear, and Felpro. For example, National Differentials start at just $14.99 with an average 4.3 star rating. Motive Gear and Felpro offer similar pricing and quality, backed by strong customer feedback. With over 4,670 reviews and a solid 4 star average, you can shop with confidence knowing other GMC C15/C1500 Pickup owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1973 GMC C15/C1500 Pickup Differential at Advance Auto Parts is around $221.04, with a range that starts at $0.91 and goes up to $1,969.99. With 134 options in stock from 13 trusted brands, finding the right fit is easy. Popular picks like 3 Qt – 80W90 Conventional Gear Oil with Posi Additive, 3 Qt – Penzoil 80W90 Conventional Gear Oil, and Dana 25, 27, 30, 44, Model 20 And Model 35, GM 7.5", 8.2", 8.5", 12P, 12T, C9.25 Rear Cover Bolt start at just $9.99 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 C15/C1500 Pickup in peak condition, inside and out.

Essential 1973 GMC C15/C1500 Pickup Differentials

Yukon Gear – Differential (Part No.29101)

Differential

from

$271.99
Differential

Yukon Gear – Replacement Pinion Nut for Dana 25, 27, 30, 36, 44, 53 & GM 7.75" (Part No.33143)

Replacement Pinion Nut for Dana 25, 27, 30, 36, 44, 53 & GM 7.75"

from

$6.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.

Product Features:
  • Pinion nut for Dana Spicer 25, 27, 30, 44, 50 and GM 7.75″
  • 3/4″ x 16 thread
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Motive Gear – Differential Ring and Pinion (Part No.D44-489)

Differential Ring and Pinion

from

$193.99


Product Features:
  • DANA-44 R/P 4.89 STD MG 23053-5X
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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 Heavy Shockproof Gear Oil is formulated to provide lasting protection. This kit includes four quarts of oil and a bottle of Yukon Limited Slip Friction modifier that reduces noise and chatter in clutch driven positraction units and limited slip differentials.

Product Features:
  • Includes four quarts of Redline Shockproof oil and one 4oz bottle of Yukon positraction additive
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USA Standard Gear – Differential Open Unit/Component (Part No.59014)

Differential Open Unit/Component

from

$484.99
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 Limited warranty against defects on their ring & pinion sets.

Product Features:
  • Fits GM 9.25″ front
  • 9.25″ ring gear
  • 30 spline pinion
  • 12 ring gear bolts
  • 4.11 ratio
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Yukon Gear – Ltd. Slip Clutch Guide, Chry 9.25/Dana 44/50/GM 12 Bolt/8.2"/8.5"/8.6"/Nis M226 (Part No.33352)

Ltd. Slip Clutch Guide, Chry 9.25/Dana 44/50/GM 12 Bolt/8.2"/8.5"/8.6"/Nis M226

from

$8.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.

Product Features:
  • Clutch guide for Chrysler 9.25″, Dana Spicer 44, Dana Spicer 50, Ford 8.8″, GM 12 bolt passenger car, GM 8.2″, 8.5″ and 8.6″, 1963-1979 Corvette and Nissan Titan
  • Compatible with Dura Grip positractions only
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Yukon Gear – Set Up Bearing (Part No.56037)

Set Up Bearing

from

$189.99
Set-up carrier bearing (2 bearings, no races) 25590. No return.

Product Features:
  • Set up bearing kit
  • Fits Dana Spicer 44
  • Easily slips on and off carrier journals to allow for easier carrier shim adjustment
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Richmond Gear – Differential Bearing Kit (Part No.83-1018-M)

Differential Bearing Kit

from

$224.99
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.
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Yukon Gear – Bearing Race Driver for Dana 25 and Dana 44 Differentials (Part No.56006)

Bearing Race Driver for Dana 25 and Dana 44 Differentials

from

$215.99
Yukon Gear & Axle offers a full line of top quality differential tools to save time and money.

Product Features:
  • For Dana 25 and Dana 44 differentials
  • Fits 31520 race
  • Ensures accurate installation of bearing races
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Yukon Gear – Zip Locker Bulkhead Quick-Disconnect Fitting (Part No.34038)

Zip Locker Bulkhead Quick-Disconnect Fitting

from

$18.99
Yukon right hand axle for ’10-’14 Ford F150 SVT Raptor front, 31 spline.

Product Features:
  • Bulkhead quit connect fitting
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Motive Gear – Differential Ring and Pinion (Part No.D60-373)

Differential Ring and Pinion

from

$266.99


Product Features:
  • DANA-60 R/P 3.73 STD MG (USES PRE-LOAD SHIMS)
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Victor Reinz – Axle Housing Cover Gasket (Part No.71-14826-00)

Axle Housing Cover Gasket

from

$9.99
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.
  • Dana engineering-approved for fit, form and function
  • Meets or exceeds OE specifications
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Dorman – Axle Shaft (Part No.630-128)

Axle Shaft

from

$142.99
This axle shaft is designed to match the performance of the original equipment shaft on specified vehicle makes, models and years. When a factory axle shaft fails or is damaged by rust or collision, this replacement is engineered to help restore and ensure the proper transfer of torque and rotational power from the differential or transmission to the wheel.

Product Features:
  • Direct replacement – this axle shaft is designed to match the performance of the original equipment shaft on specified vehicle makes, models and years
  • Ideal solution – when a factory axle shaft fails, this replacement is engineered to help ensure proper transfer of torque and rotational power from the differential or transmission to the wheels
  • Durable construction – designed and manufactured to strict specifications for reliable performance
  • Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
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Yukon Gear – 14 Plate Dura Grip Comp Clutches GM 8.2"/GM 8.5"/12T/12P/Ford 8.8"/CastIronVette (Part No.16064)

14 Plate Dura Grip Comp Clutches GM 8.2"/GM 8.5"/12T/12P/Ford 8.8"/CastIronVette

from

$373.99
This Yukon Gear & Axle clutch kit is a direct replacement for the popular Yukon Dura Grip positraction unit.

Product Features:
  • Fits Ford 8.8″, 1963-1979 Corvette, GM 12 bolt passenger car and truck, 8.2″, 8.5″ and 8.6″ differentials
  • Dura Grip composite replacement clutches
  • 14 piece kit
  • Composite clutches
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Yukon Gear – Replacement Pinion Preload Shims for Dana 60, Dana 61 & Dana 70-U (Part No.55015)

Replacement Pinion Preload Shims for Dana 60, Dana 61 & Dana 70-U

from

$19.99
Yukon shim kits are precision machined and tailored for each individual application to ensure you have the right shims for every set up.

Product Features:
  • Pinion preload shims for Dana Spicer 60 and 70U
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USA Standard Gear – Differential Spider Gear Kits (Part No.39021)

Differential Spider Gear Kits

from

$161.99
Ford 8″ & 9″ TracLoc ring gear bolt, 1-1/4″ long.

Product Features:
  • Spider gear kit
  • Fits GM 12 bolt passenger car and truck open differential with 30 spline axles
  • Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers.
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Yukon Gear – Replacement Carrier Shim Kit for Dana 60, 70, 70HD, 70U & 80 (Part No.55011)

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

from

$13.99
Yukon shim kits are precision machined and tailored for each individual application to ensure you have the right shims for every set up.

Product Features:
  • Carrier shim kit for Dana Spicer 60, 70, 70HD, 70U and 80
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Yukon Gear – Dana 25, 27, 30, 44, Model 20 And Model 35, GM 7.5", 8.2", 8.5", 12P, 12T, C9.25 Rear Cover Bolt (Part No.33286)

Dana 25, 27, 30, 44, Model 20 And Model 35, GM 7.5", 8.2", 8.5", 12P, 12T, C9.25 Rear Cover Bolt

from

$9.99
5/16″-18 cover bolt, Dana Spicer 25, 27, 30 and 44, AMC Model 20 and Model 35, Chrysler 9.25 rear, GM 7.5″, 7.625″, 8.2″, 8.5″, 12 bolt passenger car and truck.

Product Features:
  • Cover bolt for Dana Spicer 25, 27, 30 and 44, AMC Model 20 and Model 35, GM 7.5″, 7.625″, 8.2″, 8.5″ and 12 bolt passenger car and truck.
  • 1/2″ head
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Yukon Gear – Differential (Part No.26052)

Differential

from

$709.99
Differential

Yukon Gear – Ring Gear Bolt (Part No.33046)

Ring Gear Bolt

from

$6.99
Ring gear bolt for GM 12 bolt car & truck, 8.2″, 8.2″ for Buick/Olds/Pontiac, 63-79 Corvette & 55-62 GM Car & Truck. 3/8″ x 24.

Product Features:
  • Ring gear bolt for GM 12 bolt passenger car and truck, 1955-1964 passenger car and truck, GM 8.2″, 8.2″ Buick, Oldsmobile and Pontiac and 1963-1979 Corvette
  • 3/8″ x 24 thread
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Driveworks – Oil Seal (Part No.S-5778)

Oil Seal

from

$13.99
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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USA Standard Gear – Differential Spider Gear Kits (Part No.39008)

Differential Spider Gear Kits

from

$198.99
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 Limited warranty against defects on their ring & pinion sets.

Product Features:
  • Spider gear kit
  • Fits Dana Spicer 60, 30 spline open differential
  • Includes two side gears, two pinion gears, cross pin shaft, roll pin and spider gear thrust washers.
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Richmond Gear – Differential Pinion Shaft (Part No.80-0269-1)

Differential Pinion 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 limited 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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Yukon Gear – Replacement Yoke for Dana 44-Hd, 60, and 70 with A 1310 U/Joint Size (Part No.41022)

Replacement Yoke for Dana 44-Hd, 60, and 70 with A 1310 U/Joint Size

from

$233.99
Yukon Gear and Axle manufactures a complete line of general replacement and performance series of pinion yokes for many street, racing, and heavy-duty off-road applications.

Product Features:
  • Fits Dana Spicer 60 and 70
  • 29 spline
  • 1310 u-joint size
  • Outside snap ring design
  • 3.219″ snap ring span
  • 1.062″ cap diameter
  • Strap style
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Richmond Gear – Differential Gear Install Kit (Part No.83-1034-B)

Differential Gear Install Kit

from

$59.99
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.
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USA Standard Gear – Differential Rebuild Kit (Part No.37015)

Differential Rebuild Kit

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:
  • Fits Dana Spicer 44 rear
  • Uses Koyo bearings and races
  • 30 spline
  • Rear axle kit
  • Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, oil baffles and slingers, thread locker, marking compound with brush and gasket.
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Yukon Gear – Standard Open Pinion Gear Thrust Washer for GM 12P and 12T (Part No.33381)

Standard Open Pinion Gear Thrust Washer for GM 12P and 12T

from

$11.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.

Product Features:
  • Pinion gear thrust washer for GM 12 bolt passenger car and truck
  • Fits standard open differentials only
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Yukon Gear – Replacement Redi-Sleeve Yoke Saver, 8.75" C, 9.25" C, Dana 60/61/70/70U/70HD (Part No.30228)

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

from

$37.99
Yukon Mighty Seals use the latest design and manufacturing technologies to produce a precision fit that seals tight and lasts for years to come.

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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Most Popular Differential Covers for 1973 GMC C15/C1500 Pickups

Enhance your 1973 GMC C15/C1500 Pickup with one of the 2 Differential Covers we have in stock, starting at just $64.99.

Yukon Gear – Chrome Cover for GM 12 Bolt Truck (Part No.32012)

Chrome Cover for GM 12 Bolt Truck

from

$64.99
These Yukon replacement diff covers take your rig a step beyond the boring factory look. They are the stock OE design finished in chrome.

Product Features:
  • Fits GM 12 bolt truck
  • Chrome
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Yukon Gear – Polished Aluminum Cover for GM 12 Bolt Truck (Part No.32027)

Polished Aluminum Cover for GM 12 Bolt Truck

from

$269.99
These Yukon replacement diff covers take your rig a step beyond the boring factory look. They are the stock OE design made from aluminum and polished to perfection.

Product Features:
  • Fits GM 12 bolt truck
  • Finned polished aluminum
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Best-Selling 1973 GMC C15/C1500 Pickup Rear Differential Cover Gaskets

Upgrade your C15/C1500 Pickup with one of our 2 best-selling Rear Differential Cover Gaskets, earning an average 5 stars rating across 3 reviews.

Felpro – Axle Housing Cover Gasket Irregular Shaped 12 Bolt Hole Gasket (Part No.RDS 13391)

Axle Housing Cover Gasket Irregular Shaped 12 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
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Yukon Gear – GM 12 Bolt Truck Cover Gasket (Part No.23015)

GM 12 Bolt Truck Cover Gasket

from

$12.99
12T cover gasket.

Product Features:
  • Cover gasket
  • Fits GM 12 bolt truck
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Top-Quality Differential Bearings for 1973 GMC C15/C1500 Pickups

Choose a high-quality OEM or aftermarket Differential Bearing for GMC C15/C1500 Pickups and enjoy top-notch performance from $6.99.

National – Multi-Purpose Bearing (Part No.A-36)

Multi-Purpose Bearing

from

$27.99
Manufactured with premium-grade steel, National taper bearing sets feature crowned raceways and rollers to ensure even load distribution.

Product Features:
  • CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
  • PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
  • SMOOTH ROTATION: Crowned raceways and rollers for even load distribution
  • OE-STYLE DESIGN: Engineered to meet OE specifications
  • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
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Yukon Gear – Positraction Cross Pin Bolt for GM 12 Bolt Car and Truck (Part No.33344)

Positraction Cross Pin Bolt for GM 12 Bolt Car and Truck

from

$28.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.

Product Features:
  • Cross pin bolt for GM 12 bolt passenger car and truck
  • For OEM positraction applications only
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Schaeffler – Bearing – TRB (Tapered Roller Bearing) (Part No.KT5)

Bearing - TRB (Tapered Roller Bearing)

from

$14.99
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
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Yukon Gear – Cross Pin Bolt (Part No.33067)

Cross Pin Bolt

from

$6.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.

Product Features:
  • Cross pin bolt for Chrysler 8.25″ and 9.25″ rear, Ford 7.5″ and 8.8″, GM 12 bolt car and truck, 8.5″, 8.25″ IFS, 8.0″, 7.625″, 7.5″ and 7.2″ IFS
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Schaeffler – Cup (Part No.LM48510)

Cup

from

$6.99
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
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Top Picks for 1973 GMC C15/C1500 Pickup Differential Oil

Invest in one of our 6 durable Differential Oil for your 1973 GMC, knowing you’re getting trusted brands and expert craftsmanship.

Valvoline – MaxLife Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid, 1 Quart (Part No.VV324)

MaxLife Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid, 1 Quart

from

$12.49
Valvoline Full Synthetic MaxLife Multi-Vehicle ATF, the No. 1 ATF product, suitable for use in 95% of vehicles. And now, it’s recommended for most belt & chain-driven continuously variable transmissions (CVT). Featuring advanced additives to prevent the major causes of transmission breakdown, it’s designed to help prevent leaks, reduce wear & tear, and maximize performance. Has improved thermal stability for longer fluid life, better viscosity stability for consistent transmission operation, and frictional enhancements for smooth gear engagements. Valv MaxLife Multi-Vehicle ATF is suitable for most Ford, GM, Toyota, Honda, Nissan, Hyundai, Subaru, BMW, Mercedes, Volvo, VW & Audi vehicles. Recommended for use in: GM DEXRON-II, DEXRON-III, DEXRON-VI, and DEX-CVT; Ford MERCON LV; Toyota/Lexus Type T, T-II, T-IV, WS, CVTF FE, and CVTF TC; Honda/Acura ATF-Z1 and Honda CVT; Nissan/Infiniti Matic-D, Matic-J, Matic-K and Matic-S; Hyundai/Kia SP-II, SP-III, SP-IV and SPH-IV; BMW 7045E, ETL 8072B, LA2634 and LT71141; Allison C-4; Mercedes-Benz NAG-1; Volvo 1161521, 1161540, 97340 and 1273.41; Subaru ATF HP, Lineartronic chain CVT and CVT-II, Lineartronic High Torque CVT, and CV-30; and VW/Audi G-052-025-A2 and G-052-162-A1. CURRENTLY UNABLE TO SHIP THIS PRODUCT TO CUSTOMERS LOCATED IN CALIFORNIA

Product Features:
  • FOR USE IN 95% OF VEHICLES INCLUDING MOST CVTs in operation with US registered light duty applications
  • HIGH PERFORMANCE CONDITIONING AGENTS prolong seal elasticity to prevent leaks
  • IMPROVED DURABILITY & TRANSMISSION LIFE with anti-wear technology to avoid costly repairs
  • ENHANCED HIGH & LOW TEMP PERFORMANCE supports transmission fluid in all weather situations
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Yukon Gear – 3 Qt – 80W90 Conventional Gear Oil with Posi Additive (Part No.15003)

3 Qt - 80W90 Conventional Gear Oil with Posi Additive

from

$57.99
Union 76 gear oil is a conventional non-synthetic 80W90 formulation designed for all types of differentials. This kit includes three quarts of oil and a bottle of Yukon Limited Slip Friction modifier that reduces noise and chatter in clutch driven positraction units and limited slip differentials.

Product Features:
  • Includes three quarts of conventional oil and one 4oz bottle of Yukon positraction additive
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Yukon Gear – 3 Qt – Penzoil 80W90 Conventional Gear Oil (Part No.15002)

3 Qt - Penzoil 80W90 Conventional Gear Oil

from

$44.99
Union 76 gear oil is a conventional non-synthetic 80W90 formulation designed for all types of differentials.

Product Features:
  • Includes three quarts of conventional oil
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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 Heavy Shockproof Gear Oil is formulated to provide lasting protection. This kit includes four quarts of oil and a bottle of Yukon Limited Slip Friction modifier that reduces noise and chatter in clutch driven positraction units and limited slip differentials.

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 Heavy Shockproof Gear Oil is formulated to provide lasting protection.

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 Heavy Shockproof Gear Oil is formulated to provide lasting protection.

Product Features:
  • Includes four quarts of Redline Shockproof oil
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Our Rear Housing Cover Gaskets for 1973 GMC C15/C1500 Pickups

Make a smart move for your 1973 GMC C15/C1500 Pickup with our Rear Housing Cover Gasket for $9.99.

Victor Reinz – Axle Housing Cover Gasket (Part No.71-14826-00)

Axle Housing Cover Gasket

from

$9.99
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.
  • Dana engineering-approved for fit, form and function
  • Meets or exceeds OE specifications
See More

Top-Rated Differential Brands For Your 1973 GMC C15/C1500 Pickup

When it comes to finding the perfect Differential for your 1973 GMC C15/C1500 Pickup, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 13 trusted brands. We carry the most popular Differential brands including Felpro, National, and Motive Gear, and more, all known for their exceptional customer ratings (average brand rating of 4.6 stars) and competitive prices, as low as $9.49. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1973 GMC C15/C1500 Pickup, providing peace of mind with parts that meet or exceed OEM standards.

Popular Felpro 1973 GMC C15/C1500 Pickup Differentials

If you’re looking for a top-quality Differential for your 1973 GMC C15/C1500 Pickup, Advance Auto Parts has exactly what you need with our selection of Felpro Differentials. We have 1 Felpro Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $9.49, you’ll find the perfect Differential for your needs and budget. Felpro Differentials for the 1973 GMC C15/C1500 Pickup come highly rated, with over 3 customer reviews and an impressive average rating of 4.6 stars. Choosing a Felpro Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Axle Housing Cover Gasket Irregular Shaped 12 Bolt Hole Gasket
from $9.49
(3)
Axle Housing Cover Gasket Irregular Shaped 12 Bolt Hole Gasket
“felpro gaskets are great”

Top-Quality National 1973 GMC C15/C1500 Pickup Differentials

For those in search of a high-quality Differential for their 1973 GMC C15/C1500 Pickup, Advance Auto Parts offers a great selection of National Differentials. With 3 National Differentials in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Differentials start at just $14.99, with an average price of $22.32, giving you a range of options to suit your budget. Backed by over 4 customer ratings and an average rating of 4.3 stars, National Differentials provide both reliability and excellent performance. Choosing a National Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Multi-Purpose Seal
from $14.99
(2)
Multi-Purpose Seal
“Front seal. Old one was leaking”
Tapered Roller Bearing Cone
from $23.99
(1)
Tapered Roller Bearing Cone
“This Is The One That Fit My 1971 CHEVY TRUCK 12 BOLT PINION REAR BACK BEARING”
Multi-Purpose Bearing
from $27.99
(1)
Multi-Purpose Bearing
“great price”

FAQs for 1973 GMC C15/C1500 Pickup Differentials

What are the best-selling Differentials for 1973 GMC C15/C1500 Pickups?

Out of 134 Differentials that fit 1973 GMC C15/C1500 Pickups, the following parts are the top sellers:

What’s the price range for 1973 GMC C15/C1500 Pickup Differentials?

The prices of Differentials for the 1973 GMC C15/C1500 Pickup range from $0.91 up to $1,969.99 for the most premium parts.

What is the average price of a Differential for a 1973 GMC C15/C1500 Pickup?

The average price for Differentials for the 1973 GMC C15/C1500 Pickup is $221.04. 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 C15/C1500 Pickup model years?

Yes, we carry Differentials for 6 model years of GMC C15/C1500 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 C15/C1500 Pickup?

The cheapest 1973 GMC C15/C1500 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 C15/C1500 Pickup?

As of 6/2/26, these are some of the most in-demand types of Differentials for a 1973 GMC C15/C1500 Pickup:

Can I get help with 1973 GMC C15/C1500 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 C15/C1500 Pickup Differentials?

Advance Auto Parts keeps returns simple. For new GMC C15/C1500 Pickup Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.