1966 GMC I3500 Differentials
Keep Your 1966 GMC I3500 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 I3500 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Automatic Transmission Differential Cover Gaskets 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.
Competitive Prices and Extensive Inventory
The average price for a 1966 GMC I3500 Differential at Advance Auto Parts is around $33.99, with a range that starts at $9.99 and goes up to $57.99. With 2 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Multi-Purpose Bearing and Differential Carrier Gasket Round Shaped 10 Bolt Hole Gasket start at just $9.99 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 I3500 in peak condition, inside and out.
Essential 1966 GMC I3500 Differentials
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
Felpro – Differential Carrier Gasket Round Shaped 10 Bolt Hole Gasket (Part No.RDS 5090)
from
$9.99
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:
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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
Popular 1966 GMC I3500 Differentials Categories
Most Popular Automatic Transmission Differential Cover Gasket for 1966 GMC I3500s
Enhance your 1966 GMC I3500 with this popular Automatic Transmission Differential Cover Gasket we have in stock, for $9.99.
Felpro – Differential Carrier Gasket Round Shaped 10 Bolt Hole Gasket (Part No.RDS 5090)
from
$9.99
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:
See More
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
Best-Selling 1966 GMC I3500 Differential Bearing
Upgrade your I3500 with our best-selling Differential Bearing.
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
FAQs for 1966 GMC I3500 Differentials
What are the best-selling Differentials for 1966 GMC I3500s?
Out of 2 Differentials that fit 1966 GMC I3500s, the following parts are the top sellers:
- Multi-Purpose Bearing (3277216) – $57.99
- Differential Carrier Gasket Round Shaped 10 Bolt Hole Gasket (19780361) – $9.99
What’s the price range for 1966 GMC I3500 Differentials?
The prices of Differentials for the 1966 GMC I3500 range from $9.99 up to $57.99 for the most premium parts.
What is the average price of a Differential for a 1966 GMC I3500?
The average price for Differentials for the 1966 GMC I3500 is $33.99. 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 I3500?
The cheapest 1966 GMC I3500 Differentials we carry are:
- Differential Carrier Gasket Round Shaped 10 Bolt Hole Gasket (19780361) – $9.99
- Multi-Purpose Bearing (3277216) – $57.99
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 types of Differentials do you sell for my 1966 GMC I3500?
As of 11/2/25, these are some of the most in-demand types of Differentials for a 1966 GMC I3500:
Can I get help with 1966 GMC I3500 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 I3500 Differentials?
Advance Auto Parts keeps returns simple. For new GMC I3500 Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.