1978 GMC C35 Differentials

Name: Steel Spool for GM 14 Bolt Truck with 30 Spline Axles, 4.10 & Down
Brand: Yukon Gear
SKU: 32048
Price: 539.99 USD

Please Select your Vehicle to See Exact Fit Parts

Keep Your 1978 GMC C35 in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1978 GMC C35 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Oil, Rear Housing Cover Gaskets, 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 National, Driveworks, and Felpro. For example, National Differentials start at just $23.99 with an average 4.3 star rating. Driveworks and Felpro offer similar pricing and quality, backed by strong customer feedback. With over 2,952 reviews and a solid 4 star average, you can shop with confidence knowing other GMC C35 owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1978 GMC C35 Differential at Advance Auto Parts is around $217.79, with a range that starts at $1.89 and goes up to $1,119.99. With 179 options in stock from 14 trusted brands, finding the right fit is easy. Popular picks like Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket, 3 Qt – 80W90 Conventional Gear Oil with Posi Additive, and Tapered Roller Bearing Cone start at just $8.29 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 1978 GMC C35 in peak condition, inside and out.

Looking for the perfect Differential for your 1978 GMC C35? You’re in the right place. Below, you’ll find links to various types of Differentials that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Differentials, ensuring durability and a precise fit for your GMC C35. Whether you’re driving a 1978 model or another popular model year like 1975, 1976, and 1977, we’ve got you covered. Purchasing Differentials from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Differentials that fit your vehicle.

Essential 1978 GMC C35 Differentials

from

$539.99

Yukon 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 delivers 100% power to both tires at all times. These units are not recommended for street-driven vehicles. Full spools are recommended for vehicles with large tires or high horsepower.

Product Features:

Fits GM 10.5″ 14 bolt truck with 30 spline axles
4.10 and down ratio only or 4.56 and up thick gears
Provides 100% traction to both wheels at all times
Not recommended for street driven vehicles

from

$59.99

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 10.5″ 14 bolt truck
Chrome

from

$9.99

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:

Preload spacer
Fits Dana Spicer 70

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

from

$324.99

Yukon Pinion Installation Kits are a terrific solution for gear installation on lower mileage vehicles where the carrier bearings and races can be reused. This kit features Timken bearings and races along with high-quality seals and small parts. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your gear set.

Product Features:

Fits Dana Spicer 70HD
Included are pinion bearings and races, pinion seal, pinion nut, complete pinion shim kit, and marking compound with brush.

from

$13.99

Yukon spider gear set for GM 8.2″ Dura Grip posi, 28 spline. This kit does not include clutches. This kit fits Yukon Dura Grip ONLY.

Product Features:

Cover gasket
Fits Dana Spicer 60, 70, 70U and 70HD

from

$89.99

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 shaft
Fits GM 10.5″ 14 bolt truck

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$215.99

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

Product Features:

For Dana 60, Dana 70, Chrysler 8.75″ w 42 case housing, and GM 10.25″ differentials
For accurate installation of bearing races
Fits HM803110 race

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$7.99

Roll pin for Dana Spicer 50, 60, 70, 70U, 70HD and 80
0.225″ diameter
1.870″ long

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$7.99

Crush sleeve for 1988 and down GM 10.5″ 14 bolt truck
0.825″ tall

from

$591.99

For vehicles that are driven daily, the Power Trax 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 Power Trax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Power Trax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Power Trax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds.

Product Features:

The Power Trax Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Power Trax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.
Power Trax lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.
Power Trax offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.
Power Trax ia an Extreme Traction System

from

$229.99

Product Features:

DANA-70 R/P 3.73 STD MG .625″ OFFSET

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$304.99

Yukon Gear & Axle clutch kits fit popular GM diffs outfitted with a Yukon Dura Grip positraction unit feature 14 advanced carbon clutch plates, ensuring total traction and long-lasting performance.

Product Features:

Clutch kit
Fits GM 10.5″ 14 bolt truck with Eaton positraction
Carbon fiber clutches

from

$7.99

Dana 60 & Dana 70 Power Lok case bolt.

Product Features:

Power Lok case bolt for Dana Spicer 60 and 70
7/16 x 14 thread
3.5″ long
9/16″ hex head

from

$11.99

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$10.99

14T ring gear bolt 4.11 & down. 9/16″ x 18. 2.085″ overall length.

Product Features:

Ring gear bolt for GM 10.5″ 14 bolt truck
4.11 and down ratio
1/2″ x 18 thread
2.085″ overall length

from

$78.99

This Yukon Gear & Axle shim kit is designed for GM 14T differentials outfitted with an Eaton positraction unit.

Product Features:

Shim kit
Fits GM 10.5″ 14 bolt truck Eaton positraction

from

$349.99

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 1988 and down GM 10.5″ 14 bolt truck
Uses Koyo bearings and races
Included are carrier bearings and races, pinion bearings and races, pilot bearing, pinion seal, complete shim kit, pinion nut, crush sleeve, thread locker, marking compound with brush and gasket.

from

$5.99

3/8″ cover bolt, Dana 60, Dana 70 & Dana 80.

Product Features:

Cover bolt for Dana Spicer 60, 70 and 80
3/8″

from

$126.99

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
Fits Dana Spicer 70 and 70HD

from

$659.99

Yukon Gear & Axle spider gear kits utilize the highest quality materials and best production techniques in the industry to ensure a longer lasting spider gear set. Kit delivers everything needed for a complete and proper spider gear set replacement.

Product Features:

Fits GM 10.5″14 bolt truck differential outfitted with Dura Grip positraction
Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers.
Does not include clutches
Only for Dura Grip LSD

from

$183.99

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

from

$56.99

Product Features:

DANA 70 INSTALL KIT HD

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

from

$323.99

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

Product Features:

Meets or exceeds OE specifications

from

$23.99

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

from

$9.99

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

Product Features:

Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.
Dana engineering-approved for fit, form and function
Meets or exceeds OE specifications.

from

$5.99

Popular 1978 GMC C35 Differentials Categories

Differential Oil

Rear Differential Cover Gaskets

Differential Covers

Differential Pinion Shaft Lock Bolts

Differential Bearings

Differential Axle Shafts

Differential Pinion Pilot Bearings

Front Housing Cover Gaskets

Differential Cover Bolts

Differential Carriers

Differential Bearing Kits

Front Differential Pinion Bearings

Differential Spider Gear Kits

Differential Rebuild Kits

Differential Carrier Shim Kits

Differential Pinion Seals

Differential Clutch Packs

Differential Ring and Pinions

Differential End Yokes

Differential Lock Assemblies

Rear Differential Pinion Bearings

Differential Spools

Differential Carrier Bearings

Front Differential Cover Gaskets

Rear Housing Cover Gaskets

Differential Pinion Bearing Kits

Differential Ring Gear Bolts

Bearing Race Drivers

Differential Carrier Bearing Shims

Differential Crush Sleeves

Differential Side Bearing Spacers

Differential Pinion Shims

Differential Pinion Shaft Nuts

Differential Gear Install Kits

Differential Cross Pins

Differential Side Gear Thrust Washers

Differential Pinion Bearing Baffles

Differential Pinion Gear Thrust Washers

Differential Drive Pinion Gear Bearing Retainer Bolts

Differential Drive Pinion Oil Deflectors

Differential Carrier Bolts

Differential Ring and Pinion Kits

Differential Spider and Pinion Gear Kits

Differential Carrier Bearing Set

Most Popular Differential Oil for 1978 GMC C35s

Enhance your 1978 GMC C35 with one of the 6 Differential Oil we have in stock, starting at just $12.49.

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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

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

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

from

$148.99

Includes four quarts of Redline Shockproof oil and one 4oz bottle of Yukon positraction additive

from

$99.99

Redline Heavy Shockproof Gear Oil is formulated to provide lasting protection.

Product Features:

Includes three quarts of Redline Shockproof oil

from

$137.99

Redline Heavy Shockproof Gear Oil is formulated to provide lasting protection.

Product Features:

Includes four quarts of Redline Shockproof oil

Best-Selling 1978 GMC C35 Rear Housing Cover Gasket

Upgrade your C35 with our best-selling Rear Housing Cover Gasket with a 4.5 Starts rating across 13 reviews.

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from

$8.29

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

Top-Quality Differential Covers for 1978 GMC C35s

Choose a high-quality OEM or aftermarket Differential Cover for GMC C35s and enjoy top-notch performance from $59.99.

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from

$149.99

These Yukon replacement diff covers are a direct bolt-on.

Product Features:

Fits Dana Spicer 70
Steel

from

$92.99

These Yukon replacement diff covers are a direct bolt-on.

Product Features:

Fits GM 10.5″ 14 bolt truck
Steel

from

$59.99

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 10.5″ 14 bolt truck
Chrome

Top Picks for 1978 GMC C35 Rear Differential Cover Gaskets

Invest in one of our 4 durable Rear Differential Cover Gaskets for your 1978 GMC, knowing you’re getting trusted brands and expert craftsmanship.

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from

$13.99

14T cover gasket.

Product Features:

Cover gasket
Fits GM 10.5″ 14 bolt truck

Performance Differential Gasket - Dana 70

from

$47.99

Spicer performance differential cover gaskets offer all-makes coverage for street, strip, drag, and off-road applications. These gaskets are reusable offering a clean release during replacement. Built with a mechanically and chemically bonder woven steel.

Product Features:

Made to adhere without messy RTV sealant This saves on install time by eliminating the time needed for RTV cure.
Provides no re-torque design with maximum compression and sealing.
Manufactured with proprietary high-density performance material.
Made in the USA.

Performance Differential Gasket - Gm 10.5 Axle - 14 Bolt

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$34.99

Made to adhere without messy RTV sealant This saves on install time by eliminating the time needed for RTV cure.
Provides no re-torque design with maximum compression and sealing.
Manufactured with proprietary high-density performance material.
Made in the USA.

from

$9.99

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.

Top-Rated Differential Bearings for 1978 GMC C35s

Make a smart move for your 1978 GMC C35 with products all priced from $10.99 to $43.99.

show more show less

from

$10.99

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$23.99

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

from

$21.99

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

from

$43.99

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

from

$30.99

We develop and produce high-quality roller bearings, spherical bearings, and plain bearings worldwide for a wide range of applications.

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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$18.99

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

from

$11.99

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

Top-Rated Differential Brands For Your 1978 GMC C35

When it comes to finding the perfect Differential for your 1978 GMC C35, 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 Felpro, National, and Driveworks, and more, all known for their exceptional customer ratings (average brand rating of 4.6 stars) and competitive prices, as low as $8.29. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1978 GMC C35, providing peace of mind with parts that meet or exceed OEM standards.

Popular Felpro 1978 GMC C35 Differentials

If you’re looking for a top-quality Differential for your 1978 GMC C35, Advance Auto Parts has exactly what you need with our selection of Felpro Differentials. We have 2 Felpro Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $8.29 and an average cost of $13.14, you’ll find the perfect Differential for your needs and budget. Felpro Differentials for the 1978 GMC C35 come highly rated, with over 14 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.

from $17.99

(1)

Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket

“OEM only uses silicone , the gasket set with a thin layer of silicone is a much better sealant method”

from $8.29

(13)

Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket

“works good”

Top-Quality National 1978 GMC C35 Differentials

For those in search of a high-quality Differential for their 1978 GMC C35, 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 $23.99, with an average price of $24.82, giving you a range of options to suit your budget. Backed by over 15 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.

from $24.49

(1)

Multi Purpose Seal

“Fits right the first time… No more leaks…”

from $23.99

(7)

Tapered Roller Bearing Cone

“Good bearings ,fit my rear hubs on 02 Chevy k 2500hd perfectly .I have used these bearings and seals many times over the years. They come with a 3 yea”

from $25.99

(7)

Tapered Roller Bearing Cone

“Good price”

FAQs for 1978 GMC C35 Differentials

What are the best-selling Differentials for 1978 GMC C35s?

Out of 179 Differentials that fit 1978 GMC C35s, the following parts are the top sellers:

Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket (5723531) – $8.29
3 Qt – 80W90 Conventional Gear Oil with Posi Additive (11645418) – $57.99
Tapered Roller Bearing Cone (5052513) – $25.99

What’s the price range for 1978 GMC C35 Differentials?

The prices of Differentials for the 1978 GMC C35 range from $1.89 up to $1,119.99 for the most premium parts.

What is the average price of a Differential for a 1978 GMC C35?

The average price for Differentials for the 1978 GMC C35 is $217.79. 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 C35 model years?

Yes, we carry Differentials for 2 model years of GMC C35s between 1975 and 1977. The following model years are the most popular for Differential purchases: 1977, 1976, and 1975.

What are the cheapest Differentials for my 1978 GMC C35?

The cheapest 1978 GMC C35 Differentials we carry are:

Differential Ring Gear Bolt (10282457) – $1.89
Replacement Ring Gear Bolt For Dana 60, 70, 70U & 70HD, 1/2" X 18 (11643357) – $4.99
Side Gear Thrust Washer for Dana 60, 70 & 80 (11642996) – $4.99
Dana 60, Dana 70 & Dana 80 Cover Bolt (11642999) – $5.99
Replacement Outer Oil Slinger For Dana 60, 70, 70U & 70HD (11643266) – $5.99

Does Advance Auto Parts sell Differentials for any other 1978 GMC models?

Yes. We stock Differentials for 12 other popular 1978 GMC models. Some of the most popular are 1978 Jimmy Differentials, 1978 Caballero Differentials, 1978 K25 Differentials, 1978 K15 Differentials, and 1978 G25 Differentials.

What types of Differentials do you sell for my 1978 GMC C35?

As of 6/2/26, these are some of the most in-demand types of Differentials for a 1978 GMC C35:

Can I get help with 1978 GMC C35 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 C35 Differentials?

Advance Auto Parts keeps returns simple. For new GMC C35 Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

1978 GMC C35 Differentials

Yukon Gear – Steel Spool for GM 14 Bolt Truck with 30 Spline Axles, 4.10 & Down (Part No.32048)

Yukon Gear – Chrome Cover for 10.5" GM 14 Bolt Truck (Part No.32013)

Yukon Gear – Preload Spacer for Dana 70 (Part No.55070)

Yukon Gear – Redline Synthetic "Shock Proof" Oil with Positraction Additive – 4 Quarts (Part No.15005)

Yukon Gear – Pinion Install Kit for Dana 70-HD & Super-70 Differential (Part No.13034)

Yukon Gear – Replacement Cover Gasket For Dana 50, Dana 60 & Dana 70 (Part No.23007)

Yukon Gear – Standard Open Cross Pin Shaft for Four Pinion Design for GM 10.5" 14 Bolt Truck (Part No.33405)

Yukon Gear – Bearing Race Driver for Dana 60/70, Chrysler 8.75, GM 10.25" Differentials (Part No.56011)

Yukon Gear – Roll Pin, Dana 50//60/70/80, 0.225" Dia, for X/P Shaft, 1.87" L (Part No.33327)

Yukon Gear – 10.5" GM 14 Bolt Truck Crush Sleeve (Part No.33108)

Powertrax – Differential Lock Assembly (Part No.9207053000)

Motive Gear – Differential Ring and Pinion (Part No.D70-373)

Yukon Gear – Eaton-Type Positraction Carbon Clutch Kit with 14 Plates for GM 14T and 10.5" (Part No.16112)

Yukon Gear – Dana 60 & Dana 70 Power Lok Case Bolt (Part No.33236)

Driveworks – Taper Bearing Cone (Part No.S-LM-104949)

Yukon Gear – 10.5" GM 14 Bolt Truck Ring Gear Bolt (Part No.33051)

Yukon Gear – Eaton Positraction Shim Kit for 10.5" GM 14 Bolt Truck (Part No.16113)

USA Standard Gear – Master Overhaul Kit for the ’88 and Older GM 10.5" 14T Differential (Part No.37044)

Yukon Gear – Dana 60, Dana 70 & Dana 80 Cover Bolt (Part No.33235)

Yukon Gear – Replacement Carrier Shim Kit for Dana 70 & 70HD (Part No.55019)

Yukon Gear – Dura Grip Spider Gear Set for GM 10.5"/14T Differential (Part No.16167)

Dorman – Differential Pinion Yoke Assembly (Part No.697-544)

Motive Gear – Differential Gear Install Kit (Part No.D70IKH)

Felpro – Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket (Part No.RDS 55063)

Pro-King – Differential Internal Nest Kit (Part No.744A717)

National – Tapered Roller Bearing Cone (Part No.387AS)

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

Yukon Gear – 14T GM Pinion Support Bolt, 7/16-14" Long (Part No.33582)

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

Yukon Gear – 3 Qt – 80W90 Conventional Gear Oil with Posi Additive (Part No.15003)

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

Yukon Gear – Redline Synthetic "Shock Proof" Oil with Positraction Additive – 4 Quarts (Part No.15005)

Yukon Gear – Redline Synthetic "Shock Proof" Oil – 3 Quarts (Part No.15000)

Yukon Gear – Redline Synthetic "Shock Proof" Oil – 4 Quarts (Part No.15004)

Felpro – Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket (Part No.RDS 55063)

Yukon Gear – Steel Cover for Dana 70 (Part No.32322)

Yukon Gear – Steel Cover for GM 10.5" 14 Bolt Truck (Part No.32345)

Yukon Gear – Chrome Cover for 10.5" GM 14 Bolt Truck (Part No.32013)

Yukon Gear – GM 10.5′ 14 Bolt Truck Cover Gasket (Part No.23016)

Spicer – Performance Differential Gasket – Dana 70 (Part No.RD51998)

Spicer – Performance Differential Gasket – Gm 10.5 Axle – 14 Bolt (Part No.RD51995)

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

Driveworks – Taper Bearing Cone (Part No.S-LM-501349)

National – Tapered Roller Bearing Cone (Part No.387AS)

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

National – Tapered Roller Bearing Cone (Part No.469)

Schaeffler – Bearing – CRB (Cylindrical Roller Bearing) (Part No.FC67147)

Schaeffler – Cup (Part No.382A)

Schaeffler – Cup (Part No.LM104911)