1973 GMC Transmode Differentials

Keep Your 1973 GMC Transmode 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 Transmode looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Pinion Pilot Bearings, Pinion Shaft Bearings, 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. For example, National Differentials start at just $16.99 with an average 4.3 star rating. With over 40 reviews and a solid 5 star average, you can shop with confidence knowing other GMC Transmode owners approve.

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 Transfer Cases. At Advance Auto Parts, we’re here to help you keep your 1973 GMC Transmode in peak condition, inside and out.

Essential 1973 GMC Transmode Differentials

Felpro – Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (Part No.RDS 55034)

Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket

from

$14.29
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
  • 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
See More

National – Shaft Repair Sleeve (Part No.99199)

Shaft Repair Sleeve

from

$37.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Designed to repair damaged, grooved or worn shafts
  • Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
  • Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
  • Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
  • Easy to install with removable flange and installation tool
See More

FAG US – Bearing – TRB (Tapered Roller Bearing) (Part No.KT5)

Bearing - TRB (Tapered Roller Bearing)

from

$21.29
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
See More

National – Multi-Purpose Bearing (Part No.A-5)

Multi-Purpose Bearing

from

$16.99
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
See More

Most Popular Differential Pinion Pilot Bearing for 1973 GMC Transmodes

Enhance your 1973 GMC Transmode with this popular Differential Pinion Pilot Bearing we have in stock, for $37.99.

National – Shaft Repair Sleeve (Part No.99199)

Shaft Repair Sleeve

from

$37.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Designed to repair damaged, grooved or worn shafts
  • Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
  • Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
  • Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
  • Easy to install with removable flange and installation tool
See More

Best-Selling 1973 GMC Transmode Pinion Shaft Bearing

Upgrade your Transmode with our best-selling Pinion Shaft Bearing with a 4 Starts rating across 39 reviews.

National – Multi-Purpose Bearing (Part No.A-5)

Multi-Purpose Bearing

from

$16.99
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
See More

Top-Quality Differential Bearings for 1973 GMC Transmodes

Choose a high-quality OEM or aftermarket Differential Bearing for GMC Transmodes and enjoy top-notch performance from $21.29.

FAG US – Bearing – TRB (Tapered Roller Bearing) (Part No.KT5)

Bearing - TRB (Tapered Roller Bearing)

from

$21.29
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
See More

Our Top Pick for a 1973 GMC Transmode Rear Differential Cover Gasket

Invest in a durable Rear Differential Cover Gasket for your 1973 GMC, knowing you’re getting trusted brands and expert craftsmanship.

Felpro – Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (Part No.RDS 55034)

Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket

from

$14.29
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
  • 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
See More

Top-Rated Differential Brands For Your 1973 GMC Transmode

When it comes to finding the perfect Differential for your 1973 GMC Transmode, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 3 trusted brands. We carry the most popular Differential brands including National, and more, all known for their exceptional customer ratings (average brand rating of 4.3 stars) and competitive prices, as low as $16.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1973 GMC Transmode, providing peace of mind with parts that meet or exceed OEM standards.

Popular National 1973 GMC Transmode Differentials

If you’re looking for a top-quality Differential for your 1973 GMC Transmode, Advance Auto Parts has exactly what you need with our selection of National Differentials. We have 2 National Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $16.99 and an average cost of $27.49, you’ll find the perfect Differential for your needs and budget. National Differentials for the 1973 GMC Transmode come highly rated, with over 40 customer reviews and an impressive average rating of 4.3 stars. Choosing a National Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Shaft Repair Sleeve
from $37.99
(1)
Shaft Repair Sleeve
“Very delicate piece, but came shipped quite safely and not damaged. High quality.”
Multi-Purpose Bearing
from $16.99
(39)
Multi-Purpose Bearing
“Great bearings”

FAQs for 1973 GMC Transmode Differentials

What are the best-selling Differentials for 1973 GMC Transmodes?

Out of 4 Differentials that fit 1973 GMC Transmodes, the following parts are the top sellers:

What’s the price range for 1973 GMC Transmode Differentials?

The prices of Differentials for the 1973 GMC Transmode range from $14.29 up to $37.99 for the most premium parts.

What is the average price of a Differential for a 1973 GMC Transmode?

The average price for Differentials for the 1973 GMC Transmode is $22.64. 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.

What are the cheapest Differentials for my 1973 GMC Transmode?

The cheapest 1973 GMC Transmode Differentials we carry are:

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

What are the top-rated Differentials that fit the 1973 GMC Transmode?

The one 1973 GMC Transmode Differential we have in stock is the Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket. It costs $14.29.

What types of Differentials do you sell for my 1973 GMC Transmode?

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

Can I get help with 1973 GMC Transmode 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 Transmode Differentials?

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