1978 Chevrolet K20 Differentials

Essential 1978 Chevrolet K20 Differentials

Yukon Gear – Zip Locker Bulkhead Fitting Kit (Part No.34000)

Zip Locker Bulkhead Fitting Kit

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$36.99
Product Features:
  • Bulkhead fitting kit
  • Includes bulkhead fitting, outer fitting and o-ring
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Motive Gear – Drive Shaft Pinion Yoke (Part No.MG1310-6010)

Drive Shaft Pinion Yoke

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$117.99


Product Features:
  • PINION YOKE
  • CAST:1310
  • U-BOLT STYLE
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Yukon Gear – Positraction Internals For Dana 44 Dura Grip Posi, 30 Spline (Part No.16168)

Positraction Internals For Dana 44 Dura Grip Posi, 30 Spline

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$399.99
Yukon positraction internals for Dana 44 Dura Grip posi, 30 spline. Does not include clutches. Does NOT fit Trac Loc or Powr Lok. Fits Dura Grip ONLY.

Product Features:
  • Spider gear kit
  • Fits Dana Spicer 44 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 – 14 Plate Carbon Clutches For GM 8.2", GM 8.5", 12T, 12P, Ford 8.8" & Cast Iron ‘Vette (Part No.16041)

14 Plate Carbon Clutches For GM 8.2", GM 8.5", 12T, 12P, Ford 8.8" & Cast Iron 'Vette

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$404.99
Product Features:
  • Clutch kit
  • Fits Ford 8.8″, 1963-1979 Corvette, GM 12 bolt passenger car and truck, 8.2″, 8.5″ and 8.6″ Dura Grip positraction
  • 14 piece kit
  • Carbon fiber clutches
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Powertrax – Grip LS Traction System (Part No.LS201028)

Grip LS Traction System

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$463.99
For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!
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Driveworks – Taper Bearing Cup (Part No.S-LM-501314)

Taper Bearing Cup

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$7.29
Value-priced bearing meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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Yukon Gear – 8.5 Front Cover Gasket (Part No.23021)

8.5 Front Cover Gasket

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$11.99
8.5 front cover gasket.

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

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$26.99
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
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Yukon Gear – Super Carrier Shim Kit For GM 9.5" (Part No.55003)

Super Carrier Shim Kit For GM 9.5"

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$29.99
9.5″ GM differential carrier Supershim kit.

Product Features:
  • Super carrier shim kit for GM 9.5″
  • Interlocking design makes installation much easier
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Motive Gear – Differential Pinion Shim Kit (Part No.GM14SK)

Differential Pinion Shim Kit

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$22.99


Product Features:
  • KIT SHIM GM 10.5 14 BLT
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Yukon Gear – Super Carrier Shim Kit For Ford 7.5", GM 7.5", 8.2" & 8.5" (Part No.55001)

Super Carrier Shim Kit For Ford 7.5", GM 7.5", 8.2" & 8.5"

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$59.99
Product Features:
  • Super carrier shim kit for Ford 7.5″, GM 7.5″, 7.625″, 7.6″ IFS, 7.6″ IRS, 7.75″, 8.2″, 8.2″ Buick, Oldsmobile and Pontiac and GM 8.5″ front and rear
  • Interlocking design makes installation much easier
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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.

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$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.
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Yukon Gear – Replacement Outer Oil Slinger For Dana 25, 27, 30, 44 & 50 (Part No.33011)

Replacement Outer Oil Slinger For Dana 25, 27, 30, 44 & 50

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$5.99
Product Features:
  • Outer oil slinger for Dana Spicer 25, 27, 30, 44 and 50
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Motive Gear – Differential Carrier (Part No.6258340)

Differential Carrier

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$205.99


Product Features:
  • GM10.5″ 14 BOLT OPEN EMPTY CASE 4:56 & UP
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Yukon Gear – Bearing Race Driver (Part No.56015)

Bearing Race Driver

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$215.99
Bearing race driver. No return.

Product Features:
  • Bearing race driver
  • Fits HM88610 race
  • All steel construction
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Felpro – Differential Cover Gasket (Part No.RDS 55387)

Differential Cover Gasket

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$7.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • 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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Dorman – Ring And Pinion Bearing Installation Kit (Part No.697-100)

Ring And Pinion Bearing Installation Kit

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$195.99
This differential bearing kit includes all necessary installation components for a differential ring and pinion on certain vehicle years, makes and models.

Product Features:
  • Convenient kit – this ring and pinion bearing installation kit includes all necessary components for a complete repair on certain vehicle applications
  • Related repair – smart to have on hand when installing a differential ring and pinion
  • Durable construction – built for reliable longevity, free of defects in materials and workmanship
  • Trustworthy quality – backed by team of designers and engineers in the United States
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USA Standard Gear – Mini Spool For Dana 44 With 30 Spline Axles (Part No.59021)

Mini Spool For Dana 44 With 30 Spline Axles

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$149.99
Product Features:
  • Fits Dana Spicer 44 with 30 spline axles
  • Installs into a standard open carrier case
  • Provides 100% traction to both wheels at all times
  • Not recommended for street driven vehicles
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Yukon Gear – Pinion Install Kit For GM 8.5" Front Differential (Part No.13070)

Pinion Install Kit For GM 8.5" Front Differential

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$173.99
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 GM 8.5″ front
  • Included are pinion bearings and races, pinion seal, crush sleeve, complete pinion shim kit, and marking compound with brush.
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Yukon Gear – Yoke For GM 10.5" 14 Bolt Truck, 1350, Strap Style (Part No.41179)

Yoke For GM 10.5" 14 Bolt Truck, 1350, Strap Style

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$249.99
Yukon yoke for GM 10.5″ 14 bolt truck, 1350, strap style. 3.625″ snap ring span, 1.188″ cap diameter. Outside snap ring. All Yukon yokes come with a one year warranty against manufacturing defects.

Product Features:
  • Fits GM 10.5″ 14 bolt truck
  • 30 spline
  • 1350 u-joint size
  • 3.625″ snap ring span
  • 1.188″ cap diameter
  • Outside snap ring design
  • Strap style
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Yukon Gear – Replacement Front Axle Inner Seal Redi-Sleeve For Dana 44 & 8.5" GM (Part No.30219)

Replacement Front Axle Inner Seal Redi-Sleeve For Dana 44 & 8.5" GM

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$83.99
Replacement front axle inner seal redi-sleeve for Dana 44 & 8.5″ GM.Yukon Mighty seal.

Product Features:
  • Axle Redi-sleeve
  • Fits Dana Spicer 44
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Driveworks – Oil Seal (Part No.S-471424)

Oil Seal

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$4.49
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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Pro-King – Differential Pinion Gear Washer (Part No.742G216)

Differential Pinion Gear Washer

from

$2.59
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 – Standard Open Carrier Case, GM 10.5" 14 Bolt Truck, 4.10 & Down (Part No.20100)

Standard Open Carrier Case, GM 10.5" 14 Bolt Truck, 4.10 & Down

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$729.99
Product Features:
  • Standard open carrier case
  • Fits GM 10.5″ 14 bolt truck
  • 4.10 and down ratio only
  • Does not include spider gears
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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

$869.99
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
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National – Bearings (Part No.31520)

Bearings

from

$12.29
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
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Yukon Gear – Dana 44, Ford 8" / 9", And Model 20 Side Gear Thrust Washer Replacement (Part No.33283)

Dana 44, Ford 8" / 9", And Model 20 Side Gear Thrust Washer Replacement

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$5.99
Product Features:
  • Side gear thrust washer for Ford 8″, Ford 9″ and AMC Model 20
  • 0.030″ thick
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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

$67.99
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″
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Popular 1978 Chevrolet K20 Differentials Categories

1978 Chevrolet K20 Differentials

Maybe you’re in the middle of a full rebuild of that 1978 Chevrolet K20. Maybe you just need a couple of Differentials. Either way, Advance Auto Parts has 433 different Differentials in our inventory ranging from $0.91 to $1,525.00. That means you can find the exact parts or products you need to keep that 1978 Chevrolet K20 running smoothly.

Differentials are only as good as their brand. We stock 14 different brands to make sure you have plenty of trusted parts to choose from for your 1978 Chevrolet K20. Valvoline, Felpro, and Driveworks 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 1978 Chevrolet K20, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 9,216 reviews in this category, some of the top rated parts include Differential Ring And Pinion with 4.2 stars and Differential Shaft Lock Bolt with 4.0 stars.

So if you’re in the market for aftermarket Differentials to keep your 1978 Chevrolet K20 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 1978 Chevrolet K20 Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1978 Chevrolet K20 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 K20 the best it can be. Be sure to browse some of our top Differentials brands and parts.

Popular Mr. Gasket Differentials

We carry Mr. Gasket parts in our stock across Rear Differential Cover Gaskets categories, plus more. For a 1978 Chevrolet K20, our most popular Mr. Gasket Differentials include:
Differential Gasket
from $18.09
(1)
Differential Gasket
Rear Differential Cover Gaskets

FAQs for 1978 Chevrolet K20 Differentials

What are the most purchased Differentials for the 1978 Chevrolet K20?

Out of 433 Differentials for the 1978 Chevrolet K20, the most popular in our inventory are:
Differential Cover Gasket
from $9.99
(195)
Differential Cover Gasket
Rear Housing Cover Gaskets
Tapered Cone/Cup Wheel Bearing Set
from $13.99
(14)
Tapered Cone/Cup Wheel Bearing Set
Differential Bearings
Differential Cover Gasket
from $6.79
(13)
Differential Cover Gasket
Rear Differential Cover Gaskets

What are the top-rated 1978 Chevrolet K20 Differentials?

Top-rated Differentials for your 1978 Chevrolet K20 based on customer reviews/ratings are:
Differential Ring And Pinion
from $342.99
(23)
Differential Ring And Pinion
“So far so good.”
Differential Shaft Lock Bolt
from $5.99
(11)
Differential Shaft Lock Bolt
“great”
Axle Housing Cover Gasket
from $6.49
(10)
Axle Housing Cover Gasket
“fit perfectly and was easy to work with.no more leaking rear differential.”