1966 GMC 1500 Differentials
Keep Your 1966 GMC 1500 in Top Shape with Quality Differentials
Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1966 GMC 1500 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Oil, Differential Spider Gear Kits, and Differential Pinion Seals. 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 Driveworks and Felpro. For example, Driveworks Differentials start at just $13.99 with an average 4.2 star rating. Felpro offer similar pricing and quality, backed by strong customer feedback. With over 13 reviews and a solid 4.5 star average, you can shop with confidence knowing other GMC 1500 owners approve.
Competitive Prices and Extensive Inventory
The average price for a 1966 GMC 1500 Differential at Advance Auto Parts is around $121.28, with a range that starts at $7.99 and goes up to $399.99. With 7 options in stock from 4 trusted brands, finding the right fit is easy. Popular picks like Yukon Gear 3 Qt – Penzoil 80W90 Conventional Gear Oil, 15002, Yukon Gear Replacement Carrier Shim Kit For Dana Spicer 44, 30 Spline Axles, 55010, and USA Standard Gear Differential Spider Gear Kits, 39006 start at just $15.99 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 Transfer Cases. At Advance Auto Parts, we’re here to help you keep your 1966 GMC 1500 in peak condition, inside and out.
Essential 1966 GMC 1500 Differentials
Felpro – Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 6629 (Part No.RDS 6629)
from
$7.99
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.
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Yukon Gear – Yukon Gear 3 Qt – Penzoil 80W90 Conventional Gear Oil, 15002 (Part No.15002)
from
$44.99
Union 76 gear oil is a conventional non-synthetic 80W90 formulation designed for all types of differentials.
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Driveworks – Driveworks Oil Seal, S-5778 (Part No.S-5778)
Yukon Gear – Yukon Gear Replacement Carrier Shim Kit For Dana Spicer 44, 30 Spline Axles, 55010 (Part No.55010)
from
$15.99
Yukon 1541H alloy replacement rear axle for Dana 80, 37 spline (34.0-
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USA Standard Gear – USA Standard Gear Differential Spider Gear Kits, 39021 (Part No.39021)
USA Standard Gear – USA Standard Gear Differential Spider Gear Kits, 39006 (Part No.39006)
from
$203.99
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.
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Yukon Gear – Yukon Gear Dura Grip Spider Gear Set for Dana 44 Differential with 30 Spline Axles, 16168 (Part No.16168)
from
$399.99
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.
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Popular 1966 GMC 1500 Differentials Categories
Most Popular Differential Oil for 1966 GMC 1500s
Enhance your 1966 GMC 1500 with this popular Differential Oil we have in stock, for $44.99.
Yukon Gear – Yukon Gear 3 Qt – Penzoil 80W90 Conventional Gear Oil, 15002 (Part No.15002)
from
$44.99
Union 76 gear oil is a conventional non-synthetic 80W90 formulation designed for all types of differentials.
See More
Best-Selling 1966 GMC 1500 Differential Spider Gear Kits
Upgrade your 1500 with one of our 2 best-selling Differential Spider Gear Kits.
USA Standard Gear – USA Standard Gear Differential Spider Gear Kits, 39006 (Part No.39006)
from
$203.99
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.
See More
Yukon Gear – Yukon Gear Dura Grip Spider Gear Set for Dana 44 Differential with 30 Spline Axles, 16168 (Part No.16168)
from
$399.99
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.
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Top-Quality Differential Pinion Seals for 1966 GMC 1500s
Choose a high-quality OEM or aftermarket Differential Pinion Seal for GMC 1500s and enjoy top-notch performance from $13.99.
Driveworks – Driveworks Oil Seal, S-5778 (Part No.S-5778)
Our Top Pick for a 1966 GMC 1500 Rear Housing Cover Gasket
Invest in a
durable Rear Housing Cover Gasket for your 1966 GMC, knowing you’re getting trusted brands and expert craftsmanship.
Felpro – Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 6629 (Part No.RDS 6629)
from
$7.99
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.
See More
Our Differential Carrier Shim Kits for 1966 GMC 1500s
Make a smart move for your 1966 GMC 1500 with our Differential Carrier Shim Kit for $161.99.
USA Standard Gear – USA Standard Gear Differential Spider Gear Kits, 39021 (Part No.39021)
Top-Rated Differential Brands For Your 1966 GMC 1500
When it comes to finding the perfect Differential for your 1966 GMC 1500, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 4 trusted brands. We carry the most popular Differential brands including Felpro and Driveworks, and more, all known for their exceptional customer ratings (average brand rating of 4.6 stars) and competitive prices, as low as $7.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1966 GMC 1500, providing peace of mind with parts that meet or exceed OEM standards.
Popular Felpro 1966 GMC 1500 Differentials
If you’re looking for a top-quality Differential for your 1966 GMC 1500, 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 $7.99, you’ll find the perfect Differential for your needs and budget. Felpro Differentials for the 1966 GMC 1500 come highly rated, with over 10 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
$7.99
(10)
Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 6629
“Fit perfect”
Top-Quality Driveworks 1966 GMC 1500 Differentials
For those in search of a high-quality Differential for their 1966 GMC 1500, Advance Auto Parts offers a great selection of Driveworks Differentials. With 1 Driveworks 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 $13.99, giving you a range of options to suit your budget. Backed by over 3 customer ratings and an average rating of 4.2 stars, Driveworks Differentials provide both reliability and excellent performance. Choosing a Driveworks Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
from
$13.99
(3)
Driveworks Oil Seal, S-5778
“Fit the rear Dana 44 on my TJ just fine and stopped the leaking.”
FAQs for 1966 GMC 1500 Differentials
What are the best-selling Differentials for 1966 GMC 1500s?
Out of 7 Differentials that fit 1966 GMC 1500s, the following parts are the top sellers:
- Yukon Gear 3 Qt – Penzoil 80W90 Conventional Gear Oil, 15002 (11644279) – $44.99
- Yukon Gear Replacement Carrier Shim Kit For Dana Spicer 44, 30 Spline Axles, 55010 (11642497) – $15.99
- USA Standard Gear Differential Spider Gear Kits, 39006 (11644849) – $203.99
What’s the price range for 1966 GMC 1500 Differentials?
The prices of Differentials for the 1966 GMC 1500 range from $7.99 up to $399.99 for the most premium parts.
What is the average price of a Differential for a 1966 GMC 1500?
The average price for Differentials for the 1966 GMC 1500 is $121.28. 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 1966 GMC 1500?
The cheapest 1966 GMC 1500 Differentials we carry are:
- Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 6629 (5185793) – $7.99
- Driveworks Oil Seal, S-5778 (5440041) – $13.99
- Yukon Gear Replacement Carrier Shim Kit For Dana Spicer 44, 30 Spline Axles, 55010 (11642497) – $15.99
- Yukon Gear 3 Qt – Penzoil 80W90 Conventional Gear Oil, 15002 (11644279) – $44.99
- USA Standard Gear Differential Spider Gear Kits, 39021 (11643951) – $161.99
Does Advance Auto Parts sell Differentials for any other 1966 GMC models?
Yes. We stock Differentials for 19 other popular 1966 GMC models. Some of the most popular are 1966 K15/K1500 Pickup Differentials, 1966 Suburban Differentials, 1966 G1000 Series Differentials, 1966 PB1000 Series Differentials, and 1966 I1500 Differentials.
What are the top-rated Differentials that fit the 1966 GMC 1500?
Based on 13 reviews by customers, our 1966 GMC 1500 Differentials have an average customer rating of 4.5 stars. These are the highest-rated categories of Differentials for the 1966 GMC 1500 and their top-rated products:
- Rear Housing Cover Gaskets
- Differential Pinion Seals
- Driveworks Oil Seal, S-5778 (5440041) – $13.99
What types of Differentials do you sell for my 1966 GMC 1500?
As of 8/2/26, these are some of the most in-demand types of Differentials for a 1966 GMC 1500:
Can I get help with 1966 GMC 1500 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 1500 Differentials?
Advance Auto Parts keeps returns simple. For new GMC 1500 Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.