1966 GMC PB25 Series Differentials
Keep Your 1966 GMC PB25 Series 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 PB25 Series looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Oil, Front Differential Pinion Bearings, and Rear Housing 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.
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 Valvoline. For example, Valvoline Differentials start at just $14.49 with an average 4.8 star rating. With over 16 reviews and a solid 4 star average, you can shop with confidence knowing other GMC PB25 Series owners approve.
Competitive Prices and Extensive Inventory
The average price for a 1966 GMC PB25 Series Differential at Advance Auto Parts is around $130.74, with a range that starts at $3.99 and goes up to $1,566.99. With 14 options in stock from 7 trusted brands, finding the right fit is easy. Popular picks like Bearings, Bearings, and Bearings start at just $14.29 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 Transfer Cases. At Advance Auto Parts, we’re here to help you keep your 1966 GMC PB25 Series in peak condition, inside and out.
Essential 1966 GMC PB25 Series Differentials
National – Bearings (Part No.382S)
from
$18.79
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.
Product Features:
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Product Features:
- Premium bearing design matches OEM specifications
- Precision manufactured using premium-grade steel for outstanding durability and performance
- Crowned raceways and rollers to ensure even load distribution for maximum life
- Industry leading coverage
- Professional technicians know they can depend on National
FAG US – TAPERED ROLLER BEARI (Part No.KT36)
from
$31.49
TAPERED ROLLER BEARI
National – Bearings (Part No.HM88542)
from
$23.29
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.
Product Features:
See More
Product Features:
- Premium bearing design matches OEM specifications
- Precision manufactured using premium-grade steel for outstanding durability and performance
- Crowned raceways and rollers to ensure even load distribution for maximum life
- Industry leading coverage
- Professional technicians know they can depend on National
Driveworks – Tapered Roller Bearing (Part No.S-HM-803110)
National – Bearings (Part No.HM803146)
from
$47.49
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.
Product Features:
See More
Product Features:
- Premium bearing design matches OEM specifications
- Precision manufactured using premium-grade steel for outstanding durability and performance
- Crowned raceways and rollers to ensure even load distribution for maximum life
- Industry leading coverage
- Professional technicians know they can depend on National
Felpro – Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (Part No.RDS 6095-1)
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:
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
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 Seal (Part No.411330N)
from
$17.49
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:
See More
Product Features:
- Low swell in hydrocarbon fluids
- Design type: spring loaded; multi-lip
- Provides good low temperature capability
- Temperature range: -40°F to 225°F; -40°C to 107°C
- Delivers quality and reliable performance for every type of repair
Driveworks – Oil Seal (Part No.S-9316)
from
$3.99
Value-priced seal meets all cataloged application requirements.
Product Features:
See More
Product Features:
- Brand may vary by location
Victor Reinz – Differential Cover Gasket (Part No.71-14868-00)
from
$8.79
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:
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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.
Valvoline – DEXRON®-VI ATF Full Synthetic Automatic Transmission Fluid, 1 Gallon (Part No.883572)
from
$38.49
Valvoline DEXRON-VI/MERCON LV ATF is a full-synthetic transmission fluid formulated with advanced additive technology to meet and exceed the requirements of the General Motors DEXRON-VI specification. It is officially licensed and approved by GM and is fully back-serviceable and can be used wherever DEXRON-II and/or DEXRON-III are recommended. Recommended for use in the following applications: DEXRON-VI, DEXRON-III, DEXRON-II, MERCON LV and Allison C-4.
Product Features:
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Product Features:
- Formulated with full-synthetic base stocks and advanced additive technology to meet the challenging demands of automatic transmissions.
- Enhanced anti-shudder protection for smooth shifting and maximum power transfer
- Developed with anti-wear technology to help improve transmission durability
- Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
Valvoline – DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart (Part No.822405)
from
$14.49
Valvoline DEXRON-VI/MERCON LV ATF is a full-synthetic transmission fluid formulated with advanced additive technology to meet and exceed the requirements of the General Motors DEXRON-VI specification. It is officially licensed and approved by GM and is fully back-serviceable and can be used wherever DEXRON-II and/or DEXRON-III are recommended. Recommended for use in the following applications: DEXRON-VI, DEXRON-III, DEXRON-II, and Allison C-4.
Product Features:
See More
Product Features:
- Formulated with full-synthetic base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
- Enhanced anti-shudder protection for smooth shifting and maximum power transfer
- Developed with anti-wear technology to help improve transmission durability
- Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
National – Bearings (Part No.HM88510)
from
$14.29
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.
Product Features:
See More
Product Features:
- Premium bearing design matches OEM specifications
- Precision manufactured using premium-grade steel for outstanding durability and performance
- Crowned raceways and rollers to ensure even load distribution for maximum life
- Industry leading coverage
- Professional technicians know they can depend on National
National – Bearings (Part No.HM803110)
from
$22.99
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.
Product Features:
See More
Product Features:
- Premium bearing design matches OEM specifications
- Precision manufactured using premium-grade steel for outstanding durability and performance
- Crowned raceways and rollers to ensure even load distribution for maximum life
- Industry leading coverage
- Professional technicians know they can depend on National
Popular 1966 GMC PB25 Series Differentials Categories
Most Popular Differential Oil for 1966 GMC PB25 Series
Enhance your 1966 GMC PB25 Series with one of the 2 Differential Oil we have in stock, starting at just $14.49.
Valvoline – DEXRON®-VI ATF Full Synthetic Automatic Transmission Fluid, 1 Gallon (Part No.883572)
from
$38.49
Valvoline DEXRON-VI/MERCON LV ATF is a full-synthetic transmission fluid formulated with advanced additive technology to meet and exceed the requirements of the General Motors DEXRON-VI specification. It is officially licensed and approved by GM and is fully back-serviceable and can be used wherever DEXRON-II and/or DEXRON-III are recommended. Recommended for use in the following applications: DEXRON-VI, DEXRON-III, DEXRON-II, MERCON LV and Allison C-4.
Product Features:
See More
Product Features:
- Formulated with full-synthetic base stocks and advanced additive technology to meet the challenging demands of automatic transmissions.
- Enhanced anti-shudder protection for smooth shifting and maximum power transfer
- Developed with anti-wear technology to help improve transmission durability
- Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
Valvoline – DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart (Part No.822405)
from
$14.49
Valvoline DEXRON-VI/MERCON LV ATF is a full-synthetic transmission fluid formulated with advanced additive technology to meet and exceed the requirements of the General Motors DEXRON-VI specification. It is officially licensed and approved by GM and is fully back-serviceable and can be used wherever DEXRON-II and/or DEXRON-III are recommended. Recommended for use in the following applications: DEXRON-VI, DEXRON-III, DEXRON-II, and Allison C-4.
Product Features:
See More
Product Features:
- Formulated with full-synthetic base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
- Enhanced anti-shudder protection for smooth shifting and maximum power transfer
- Developed with anti-wear technology to help improve transmission durability
- Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
Best-Selling 1966 GMC PB25 Series Front Differential Pinion Bearings
Upgrade your PB25 Series with one of our 3 best-selling Front Differential Pinion Bearings.
National – Bearings (Part No.HM88542)
from
$23.29
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.
Product Features:
See More
Product Features:
- Premium bearing design matches OEM specifications
- Precision manufactured using premium-grade steel for outstanding durability and performance
- Crowned raceways and rollers to ensure even load distribution for maximum life
- Industry leading coverage
- Professional technicians know they can depend on National
National – Bearings (Part No.HM803146)
from
$47.49
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.
Product Features:
See More
Product Features:
- Premium bearing design matches OEM specifications
- Precision manufactured using premium-grade steel for outstanding durability and performance
- Crowned raceways and rollers to ensure even load distribution for maximum life
- Industry leading coverage
- Professional technicians know they can depend on National
Driveworks – Tapered Roller Bearing (Part No.S-HM-803110)
Top-Quality Rear Housing Cover Gaskets for 1966 GMC PB25 Series
Choose a high-quality OEM or aftermarket Rear Housing Cover Gasket for GMC PB25 Series and enjoy top-notch performance from $8.29.
Felpro – Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (Part No.RDS 6095-1)
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:
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
Top Picks for 1966 GMC PB25 Series Differential Bearings
Invest in one of our 2 durable Differential Bearings for your 1966 Ford, knowing you’re getting trusted brands and expert craftsmanship.
National – Bearings (Part No.382S)
from
$18.79
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.
Product Features:
See More
Product Features:
- Premium bearing design matches OEM specifications
- Precision manufactured using premium-grade steel for outstanding durability and performance
- Crowned raceways and rollers to ensure even load distribution for maximum life
- Industry leading coverage
- Professional technicians know they can depend on National
FAG US – TAPERED ROLLER BEARI (Part No.KT36)
from
$31.49
TAPERED ROLLER BEARI
Differential Pinion Seals for 1966 GMC PB25 Series
Make a smart move for your 1966 GMC PB25 Series with products all priced from $3.99 to $17.49.
Driveworks – Oil Seal (Part No.S-9316)
from
$3.99
Value-priced seal meets all cataloged application requirements.
Product Features:
See More
Product Features:
- Brand may vary by location
National – Multi Purpose Seal (Part No.411330N)
from
$17.49
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:
See More
Product Features:
- Low swell in hydrocarbon fluids
- Design type: spring loaded; multi-lip
- Provides good low temperature capability
- Temperature range: -40°F to 225°F; -40°C to 107°C
- Delivers quality and reliable performance for every type of repair
Top-Rated Differential Brands For Your 1966 GMC PB25 Series
When it comes to finding the perfect Differential for your 1966 GMC PB25 Series, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 7 trusted brands. We carry the most popular Differential brands including Valvoline, and more, all known for their exceptional customer ratings (average brand rating of 4.8 stars) and competitive prices, as low as $14.49. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1966 GMC PB25 Series, providing peace of mind with parts that meet or exceed OEM standards.
Popular Valvoline 1966 GMC PB25 Series Differentials
If you’re looking for a top-quality Differential for your 1966 GMC PB25 Series, Advance Auto Parts has exactly what you need with our selection of Valvoline Differentials. We have 2 Valvoline Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $14.49 and an average cost of $26.49, you’ll find the perfect Differential for your needs and budget. Valvoline Differentials for the 1966 GMC PB25 Series come highly rated, with over 4 customer reviews and an impressive average rating of 4.8 stars. Choosing a Valvoline Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
from
$14.49
(2)
DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart
“I’ve used this in my 2005 2500HD since I bought the truck with 20k on it now at 280k changed every other year maybe 40k I’d put on in two years,
I pu”
from
$38.49
(2)
DEXRON®-VI ATF Full Synthetic Automatic Transmission Fluid, 1 Gallon
“I’ve used this in my 2005 2500HD since I bought the truck with 20k on it now at 280k changed every other year maybe 40k I’d put on in two years,
I pu”
FAQs for 1966 GMC PB25 Series Differentials
What are the best-selling Differentials for 1966 GMC PB25 Series?
What’s the price range for 1966 GMC PB25 Series Differentials?
The prices of Differentials for the 1966 GMC PB25 Series range from $3.99 up to $1,566.99 for the most premium parts.
What is the average price of a Differentials Differential for a 1966 GMC PB25 Series?
The average price for Differentials for the 1966 GMC PB25 Series is $130.74. 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 PB25 Series?
The cheapest 1966 GMC PB25 Series Differentials we carry are:
- Oil Seal (5440289) – $3.99
- Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (5189276) – $8.29
- Differential Cover Gasket (12547604) – $8.79
- Tapered Roller Bearing (10659680) – $13.49
- Bearings (3276953) – $14.29
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 PB25 Series?
Based on 16 reviews by customers, our 1966 GMC PB25 Series Differentials have an average customer rating of 4 stars. These are the highest-rated categories of Differentials for the 1966 GMC PB25 Series and their top-rated products:
- Differential Oil
- DEXRON®-VI ATF Full Synthetic Automatic Transmission Fluid, 1 Gallon (12073048) – $38.49
- DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart (12079201) – $14.49
- Rear Housing Cover Gaskets
- Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (5189276) – $8.29
What types of Differentials do you sell for my 1966 GMC PB25 Series?
As of 4/10/25, these are some of the most in-demand types of Differentials for a 1966 GMC PB25 Series:
Can I get help with 1966 GMC PB25 Series 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 PB25 Series Differentials?
Advance Auto Parts keeps returns simple. For new GMC PB25 Series Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.