1979 GMC K1500 Differentials

Essential 1979 GMC K1500 Differentials

Dorman – Differential Yoke including Seal and Pinion Nut (Part No.697-500)

Differential Yoke including Seal and Pinion Nut

from

$139.99
Worn or damaged differential end yoke causing driveline vibrations? This direct replacement end yoke matches the original equipment part for a trustworthy repair and reliable performance.

Product Features:
  • Direct replacement – this differential end yoke matches the fit and construction of the original yoke
  • Excellent value – this replacement end yoke offers original equipment quality at a fraction of the price of dealer parts
  • Quality materials – this end yoke is machined from cast iron for strength and is precision machined for reliability
  • Validated fit – this differential end yoke has been tested to confirm accurate fit
See More

Yukon Gear – Standard Open Side Gear And Thrust Washer For GM 12 Bolt Car And Truck (Part No.33380)

Standard Open Side Gear And Thrust Washer For GM 12 Bolt Car And Truck

from

$7.99
Standard Open side gear thrust washer for 12P and 12T GM.

Product Features:
  • Side gear thust washer for GM 12 bolt passenger car and truck
  • Fits standard open differentials only
See More

Pro-King – Differential Rebuild Kit (Part No.742D004A)

Differential Rebuild Kit

from

$112.99
Pro-King is the leading supplier of transmission and driveline products in the aftermarket. All products are designed to meet or exceed OE quality, form, fit and funtion.

Product Features:
  • Contains the highest quality Japanese bearings
See More

Yukon Gear – Carrier Installation Kit For GM 8.5" Differential With HD Bearings (Part No.57009)

Carrier Installation Kit For GM 8.5" Differential With HD Bearings

from

$151.99
Yukon Carrier installation kits are great, low cost kit for carrier changes such as Positraction or locker upgrades. Carrier installation kit for GM 8.5″ differential with HD bearings for large journal carrier. This kit contains carrier bearings, races and shims. This kit is used in 8.5″ differentials using a Yukon Dura Grip, Eaton posi, ValueTrac, True Trac, Pro-Series Auburn, Detroit Locker or standard carrier with large bearing journals.

Product Features:
  • Fits GM 8.5″ with aftermarket positraction
  • Works with Heavy Duty Bearings
  • Includes carrier bearings and races and “super” carrier shim kit
See More

Yukon Gear – Powr Lok Button Kit For Dana 30, Dana 44 & Chrysler 8.75" (Part No.33536)

Powr Lok Button Kit For Dana 30, Dana 44 & Chrysler 8.75"

from

$61.99
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 t

Product Features:
  • Powr Lok button kit
  • Fits Dana Spicer 30, 44 and Chrysler 8.75″
See More

Yukon Gear – Mini Spool For GM 8.5" With 28 Spline Axles (Part No.32232)

Mini Spool For GM 8.5" With 28 Spline Axles

from

$165.99
10 bolt Mini Spool for 8.5″ GM with 28 spline axles. Mini spools are a low-cost traction option for vehicles looking for full-time lockup. The mini spool installs into a standard open carrier and give 100% power to both tires at all times. These units are not recommended for street-driven vehicles. We recommend full spools for vehicles with large tires or high horsepower. These units come with a one year warranty against manufacturing defects.

Product Features:
  • Fits GM 8.5″ with 28 spline axles
  • Installs into a standard open carrier case
  • Provides 100% traction to both wheels at all times
  • Not recommended for street driven vehicles
See More

Yukon Gear – 8.5 Front Cover Gasket (Part No.23021)

8.5 Front Cover Gasket

from

$11.99
8.5 front cover gasket.

Product Features:
  • Cover gasket
  • Fits GM 8.5″ front
See More

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

3 Qt - Penzoil 80W90 Conventional Gear Oil

from

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

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

Yukon Gear – Pinion Gear And Thrust Washer For 8.25" GM IFS (Part No.33377)

Pinion Gear And Thrust Washer For 8.25" GM IFS

from

$5.99
Pinion gear thrust washer for 8.25″ GM IFS.

Product Features:
  • Pinion gear thrust washer
  • Fits GM 8.25″ IFS
See More

Yukon Gear – Bearing Race Driver (Part No.56023)

Bearing Race Driver

from

$198.99
Bearing race driver. No return.

Product Features:
  • Bearing race driver
  • Fits M88010 race
  • All steel construction
See More

Yukon Gear – Pinion Install Kit For ’97 & Down GM 9.5" Differential (Part No.13075)

Pinion Install Kit For '97 & Down GM 9.5" Differential

from

$306.99
Yukon Pinion installation kits are a terrific solution for gear installation on lower mileage vehicles where the carrier bearings & races can be reused. This kit uses Timken bearings and races along with a high quality pinion seal and small parts. Included in this kit are the pinion bearings and races, pilot bearing (if applicable), crush sleeve (if applicable), complete pinion shim kit, thread locker, and marking compound with brush. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your pinion gear.

Product Features:
  • Fits 1997 and down GM 9.5″
  • Included are pinion bearings and races, pinion seal, crush sleeve, complete pinion shim kit, and marking compound with brush.
See More

Yukon Gear – High Performance Ring & Pinion Gear Set For GM 8.5" & 8.6" In A 3.08 Ratio (Part No.24492)

High Performance Ring & Pinion Gear Set For GM 8.5" & 8.6" In A 3.08 Ratio

from

$588.99
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. This gear set does not have an ABS provision on the pinion.

Product Features:
  • Fits GM 8.5″ and 8.6″
  • 8.50″ ring gear diameter
  • 30 spline pinion
  • 10 ring gear bolts
  • 3.08 ratio
See More

Yukon Gear – Minor Install Kit For GM 8.6" Rear Differential (Part No.12059)

Minor Install Kit For GM 8.6" Rear Differential

from

$84.99
Yukon Minimum installation kits are a low cost solution for gear changes in newer vehicles where the bearings can be reused. This kit uses all high quality components to ensure a smooth set up. kit includes a pinion seal, crush sleeve (if applicable), complete shim kit, marking compound and brush. (includes Supershims)

Product Features:
  • Fits GM 8.6″
  • Included are a pinion seal, crush sleeve , complete shim kit, marking compound and brush.
See More

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 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 t

Product Features:
  • Pinion nut for Dana Spicer 25, 27, 30, 44, 50 and GM 7.75″
  • 3/4″ x 16 thread
See More

Motive Gear – Differential Pinion Seal (Part No.8460N)

Differential Pinion Seal

from

$8.29
All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of our products undergo rigid quality control processes to insure proper fit, performance and longevity. Motive Gear products can be found in the winners circle at NHRA, IHRA, NMRA, NMCA, SODA, SCORE, BITD, Ultra-4 and NASCAR events because we offer unmatched selection and quality demanded by racers and their crew chiefs – the same quality and selection demanded by DIY customers and top mechanics. With four warehouses strategically located across North America, most Motive Gear orders arrive within 2-4 days. Win with Motive Gear!
See More

Yukon Gear – Dura Grip For Dana 44, 30 Spline, 3.73 & Down (Part No.26026)

Dura Grip For Dana 44, 30 Spline, 3.73 & Down

from

$856.99
The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence & performance you need. Get longer life and better traction with the heavy duty Yukon Dura Grip Positraction. The Yukon Dura Grip uses a nodular case and forged 4320 internals for added strength along with composite clutches for high performance and long life. All units are Rebuildable and many offer upgrades to increase aggressiveness for racing applications. Each unit carries a one year warranty against defects.

Product Features:
  • Fits Dana Spicer 44 with 30 spline axles
  • 3.73 ratio and down only
  • 4-spring, clutch style positraction
  • Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
  • Fully rebuildable
  • Assembled in the USA
See More

Yukon Gear – Differential Cover B (Part No.33572)

Differential Cover B

from

$7.99
Differential Cover B

Yukon Gear – 1541H Inner Axle For ’78 And Newer 8.5" GM (Part No.21122)

1541H Inner Axle For '78 And Newer 8.5" GM

from

$383.99
Yukon 1541H inner axle for ’78 and newer 8.5″ GM with a length of 35.5 inches and with 28 splines. Yukon 1541H alloy axles offer a strength increase over stock while retaining a low cost. Yukon 1541H alloy front axles come with a one year warranty against manufacturing defects.

Product Features:
  • 28 spline
  • 35.5″ long
  • Fits GM 8.5″ in 1979-1991 GM 1/2 ton
  • Left hand inner
  • 5-760X U-joint size
See More

Driveworks – Taper Bearing Cone (Part No.S-HM-88649)

Taper Bearing Cone

from

$19.29
Value-priced bearing meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
See More

Yukon Gear – Dana 30 & Dana 44 Power Lok Bolt, Left Hand, & 8.75" Chrysler & 55P (Part No.33234)

Dana 30 & Dana 44 Power Lok Bolt, Left Hand, & 8.75" Chrysler & 55P

from

$21.99
Dana 30 & Dana 44 Power Lok bolt, left hand, & 8.75″ Chrysler & 55P.

Product Features:
  • Power Lok case bolt for Dana Spicer 30, Dana Spicer 44, Chrysler 8.75″ and 1955-1964 GM passenger car
  • Left hand thread
See More

Yukon Gear – 20 Long Air Line For Zip Locker (Part No.34002)

20 Long Air Line For Zip Locker

from

$29.99
20 long air line for Zip Locker.

Product Features:
  • Air line
  • 20′ in length
See More

Motive Gear – Differential Carrier Gear Kit (Part No.GM9.5BI)

Differential Carrier Gear Kit

from

$176.99


Product Features:
  • GM9.5″ INTERNAL KIT (OPEN) 33 SPL. FRONT & REAR
See More

National – Bearings (Part No.25590)

Bearings

from

$30.99
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Crowned raceways and rollers to ensure even load distribution for maximum life
  • Industry leading coverage
  • Professional technicians know they can depend on National
See More

Yukon Gear – Replacement Cross Pin Shaft For Dana 44, Standard Open (Part No.33318)

Replacement Cross Pin Shaft For Dana 44, Standard Open

from

$16.99
Product Features:
  • Cross pin shaft for Dana Spicer 44
  • Fits standard open differentials only
See More

Richmond Gear – MiniSpool (Part No.78-1230-1)

MiniSpool

from

$151.99
MiniSpool

Yukon Gear – Replacement Carrier Shim Kit For Dana Spicer 44, 30 Spline Axles (Part No.55010)

Replacement Carrier Shim Kit For Dana Spicer 44, 30 Spline Axles

from

$15.99
Product Features:
  • Carrier shim kit for Dana Spicer 30 with 30 spline axles
See More

Yukon Gear – Grizzly Locker, Fits Dana 44, 30 Spline, 3.73 & Down (Part No.28021)

Grizzly Locker, Fits Dana 44, 30 Spline, 3.73 & Down

from

$998.99
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!

Product Features:
  • Fits Dana Spicer 44 with 30 spline axles
  • 3.73 and down ratio only
  • Patented internal design reduces common locker failures
  • 8620 internals for added strength
  • Assembled in the USA
See More

Yukon Gear – 30 Spline Standard Open Loaded Carrier Case, GM 8.6" (Part No.20098)

30 Spline Standard Open Loaded Carrier Case, GM 8.6"

from

$481.99
GM 8.6″ 30 spline standard open loaded carrier. Complete differential case with internals.

Product Features:
  • Standard open carrier case and spiders
  • Fits GM 8.6″
See More

Popular 1979 GMC K1500 Differentials Categories

1979 GMC K1500 Differentials

Maybe you’re in the middle of a full rebuild of that 1979 GMC K1500. Maybe you just need a couple of Differentials. Either way, Advance Auto Parts has 478 different Differentials in our inventory ranging from $1.99 to $1,969.99. That means you can find the exact parts or products you need to keep that 1979 GMC K1500 running smoothly.

Differentials are only as good as their brand. We stock 13 different brands to make sure you have plenty of trusted parts to choose from for your 1979 GMC K1500. Felpro, Yukon Gear, and Motive Gear are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Differentials for your 1979 GMC K1500, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 798 reviews in this category, some of the top rated parts include Differential Ring And Pinion with 5.0 stars and Differential Master Bearing Kit – Koyo with 3.8 stars.

So if you’re in the market for aftermarket Differentials to keep your 1979 GMC K1500 rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Differentials Brands To Make Your 1979 GMC K1500 Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1979 GMC K1500 demands trusted brand parts and products to keep it running. Many trusted brands of Differentials make up Advance Auto Parts’ inventory, and all are ready to help make your K1500 the best it can be. Be sure to browse some of our top Differentials brands and parts.

Popular Driveworks Differentials

We carry Driveworks parts in our stock across Differential Pinion Seals categories, plus more. For a 1979 GMC K1500, our most popular Driveworks Differentials include:
Differential Pinion Seal
from $7.79
(1)
Differential Pinion Seal
Differential Pinion Seals
Oil Seal
from $6.29
(1)
Oil Seal
Differential Pinion Seals

Top 1979 GMC K1500 Differentials from Felpro

Felpro products are another trusted brand when it comes to Differentials for your 1979 GMC K1500. Popular Felpro parts include:
Differential Cover Gasket
from $9.99
(195)
Differential Cover Gasket
Rear Differential Cover Gaskets
Axle Housing Cover Gasket
from $6.49
(10)
Axle Housing Cover Gasket
Front Housing Cover Gaskets
DIFFERENTIAL GASKET
from $7.99
(3)
DIFFERENTIAL GASKET
Rear Differential Cover Gaskets

FAQs for 1979 GMC K1500 Differentials

What are the most purchased Differentials for the 1979 GMC K1500?

Out of 478 Differentials for the 1979 GMC K1500, the most popular in our inventory are:
Differential Shaft Lock Bolt
from $5.99
(11)
Differential Shaft Lock Bolt
Differential Pinion Shaft Lock Bolts
3 Qt - Penzoil 80W90 Conventional Gear Oil
from $44.99
This product is not rated
3 Qt – Penzoil 80W90 Conventional Gear Oil
Differential Oil
Ring Gear Bolt
from $2.49
This product is not rated
Ring Gear Bolt
Differential Ring Gear Bolts

What are the top-rated 1979 GMC K1500 Differentials?

Top-rated Differentials for your 1979 GMC K1500 based on customer reviews/ratings are:
Differential Ring And Pinion
from $350.99
(7)
Differential Ring And Pinion
“Great spark plugs.”
Differential Master Bearing Kit - Koyo
from $156.99
(5)
Differential Master Bearing Kit – Koyo
“was delivered as promised and on time”
Bearings
from $9.99
(4)
Bearings
“Fast handling”