1966 GMC 2500 Differentials
Keep Your 1966 GMC 2500 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 2500 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Bearings, Differential Bearing Kits, and Front Differential Cover Gaskets. 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.
Competitive Prices and Extensive Inventory
The average price for a 1966 GMC 2500 Differential at Advance Auto Parts is around $350.07, with a range that starts at $9.49 and goes up to $1,566.99. With 6 options in stock from 5 trusted brands, finding the right fit is easy. Popular picks like Multi-Purpose Bearing, Pinion Installation Kit For Dana 60 Rear, and Bearing Kit For Dana 60 Rear start at just $57.99 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 2500 in peak condition, inside and out.
Essential 1966 GMC 2500 Differentials
Felpro – Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (Part No.RDS 6095-1)
from
$9.49
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:
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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
USA Standard Gear – Bearing Kit For Dana 60 Rear (Part No.58042)
from
$229.99
This kit uses Koyo bearings and races along with all high quality small parts. kit includes carrier bearings and races, pinion bearings and races, pinion seal, crush sleeve (if applicable), oil baffles and slingers (if applicable), marking compound and brush. USA Standard Gear does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your ring & pinion set.
Product Features:
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Product Features:
- Fits Dana Spicer 60 rear
- Uses Koyo bearings and races
- Included are carrier bearings and races, pinion bearings and races, pinion seal, pinion nut, crush sleeve, marking compound and brush.
USA Standard Gear – Pinion Installation Kit For Dana 60 Rear (Part No.60017)
from
$225.99
Product Features:
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- Fits Dana Spicer 60 rear
- Uses Koyo bearings and races
- Included are pinion bearings and races, pinion seal, pinion nut, crush sleeve, marking compound and brush.
Yukon Gear – Bearing Race Driver Set, 21 Piece (Part No.56030)
from
$1566.99
21 Piece bearing race driver set. (Box wt: 140lbs) No return.
Product Features:
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Product Features:
- Bearing race driver set
- 21 pieces
- All steel construction
National – Multi-Purpose Bearing (Part No.KD-11786-Y)
from
$57.99
Product Features:
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- 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
Victor Reinz – Differential Cover Gasket (Part No.71-14868-00)
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:
See More
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.
Popular 1966 GMC 2500 Differentials Categories
Most Popular Differential Bearing for 1966 GMC 2500s
Enhance your 1966 GMC 2500 with this popular Differential Bearing we have in stock, for $57.99.
National – Multi-Purpose Bearing (Part No.KD-11786-Y)
from
$57.99
Product Features:
See More
- 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
Best-Selling 1966 GMC 2500 Differential Bearing Kit
Upgrade your 2500 with our best-selling Differential Bearing Kit.
USA Standard Gear – Bearing Kit For Dana 60 Rear (Part No.58042)
from
$229.99
This kit uses Koyo bearings and races along with all high quality small parts. kit includes carrier bearings and races, pinion bearings and races, pinion seal, crush sleeve (if applicable), oil baffles and slingers (if applicable), marking compound and brush. USA Standard Gear does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your ring & pinion set.
Product Features:
See More
Product Features:
- Fits Dana Spicer 60 rear
- Uses Koyo bearings and races
- Included are carrier bearings and races, pinion bearings and races, pinion seal, pinion nut, crush sleeve, marking compound and brush.
Top-Quality Front Differential Cover Gaskets for 1966 GMC 2500s
Choose a high-quality OEM or aftermarket Front Differential Cover Gasket for GMC 2500s and enjoy top-notch performance from $9.99.
Victor Reinz – Differential Cover Gasket (Part No.71-14868-00)
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:
See More
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.
Our Top Pick for a 1966 GMC 2500 Differential Rebuild Kit
Invest in a
durable Differential Rebuild Kit for your 1966 GMC, knowing you’re getting trusted brands and expert craftsmanship.
USA Standard Gear – Pinion Installation Kit For Dana 60 Rear (Part No.60017)
from
$225.99
Product Features:
See More
- Fits Dana Spicer 60 rear
- Uses Koyo bearings and races
- Included are pinion bearings and races, pinion seal, pinion nut, crush sleeve, marking compound and brush.
Our Top-Rated Rear Housing Cover Gaskets for 1966 GMC 2500s
Make a smart move for your 1966 GMC 2500 with our Rear Housing Cover Gasket for $9.49.
Felpro – Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (Part No.RDS 6095-1)
from
$9.49
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:
See More
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
FAQs for 1966 GMC 2500 Differentials
What are the best-selling Differentials for 1966 GMC 2500s?
Out of 6 Differentials that fit 1966 GMC 2500s, the following parts are the top sellers:
- Multi-Purpose Bearing (3277216) – $57.99
- Pinion Installation Kit For Dana 60 Rear (11645350) – $225.99
- Bearing Kit For Dana 60 Rear (11643912) – $229.99
What’s the price range for 1966 GMC 2500 Differentials?
The prices of Differentials for the 1966 GMC 2500 range from $9.49 up to $1,566.99 for the most premium parts.
What is the average price of a Differential for a 1966 GMC 2500?
The average price for Differentials for the 1966 GMC 2500 is $350.07. 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 2500?
The cheapest 1966 GMC 2500 Differentials we carry are:
- Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (5189276) – $9.49
- Differential Cover Gasket (12547604) – $9.99
- Multi-Purpose Bearing (3277216) – $57.99
- Pinion Installation Kit For Dana 60 Rear (11645350) – $225.99
- Bearing Kit For Dana 60 Rear (11643912) – $229.99
Does Advance Auto Parts sell Differentials for any other 1966 GMC models?
Yes. We stock Differentials for 20 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 2500?
The one 1966 GMC 2500 Differential we have in stock is the Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket. It is rated 3 stars and costs $9.49.
What types of Differentials do you sell for my 1966 GMC 2500?
As of 3/1/26, these are some of the most in-demand types of Differentials for a 1966 GMC 2500:
Can I get help with 1966 GMC 2500 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 2500 Differentials?
Advance Auto Parts keeps returns simple. For new GMC 2500 Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.