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 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 PB25 Series Differential at Advance Auto Parts is around $27.19, with a range that starts at $9.49 and goes up to $81.49. With 12 options in stock from 6 trusted brands, finding the right fit is easy. Popular picks like Yukon Gear 3 Qt – Penzoil 80W90 Conventional Gear Oil, 15002, National Multi-Purpose Bearing, KD-11786-Y, and National Tapered Roller Bearing Cone, HM88542 start at just $24.29 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
Felpro – Felpro Differential Carrier Gasket Round Shaped 10 Bolt Hole Gasket, RDS 5090 (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.
See More
Victor Reinz – Victor Reinz Differential Cover Gasket, 71-14868-00 (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.
See More
National – National Multi-Purpose Bearing, KD-11786-Y (Part No.KD-11786-Y)
from
$81.49
Manufactured with premium-grade steel, National taper bearing sets feature crowned raceways and rollers to ensure even load distribution.
See More
National – National Bearing Race, 382S (Part No.382S)
from
$23.29
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
See More
Driveworks – Driveworks Tapered Roller Bearing, S-HM-803110 (Part No.S-HM-803110)
Valvoline – Valvoline Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid 1 GA, 904891 (Part No.904891)
from
$35.99
Choosing an automatic transmission fluid just got easier. Valvoline Full Synthetic MaxLife Multi-Vehicle ATF, the #1 ATF product, is suitable for use in 95% of ATF vehicles in operation with US registered light duty applications. And now, it€™s also recommended for most belt and chain-driven continuously variable transmissions (CVT). Featuring advanced additives to prevent the major causes of transmission breakdown, it€™s designed to help prevent leaks, reduce wear and tear, and maximize performance €“ all for much longer than conventional fluids. It has improved thermal stability for longer fluid life, better viscosity stability for consistent transmission operation, and frictional enhancements for smooth gear engagements. Whether your vehicle has a CVT or traditional automatic, Valvoline MaxLife Multi-Vehicle ATF is suitable for a broad range of transmissions including Ford, GM, Toyota, Honda, Nissan, Hyundai, Subaru, BMW, Mercedes, Volvo, VW and Audi vehicles. It€™s specifically recommended for use in the following applications: GM DEXRON-II, DEXRON-III, DEXRON-VI, and DEX-CVT; Ford MERCON LV; Toyota/Lexus Type T, T-II, T-IV, WS, CVTF FE, and CVTF TC. For the many miles ahead, trust your transmission with Valvoline, the #1 automatic transmission fluid brand.
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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.
See More
National – National Tapered Roller Bearing Cone, HM88542 (Part No.HM88542)
from
$24.29
Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
See More
National – National Bearing Race, HM88510 (Part No.HM88510)
from
$11.99
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
See More
National – National Tapered Roller Bearing Cone, HM803146 (Part No.HM803146)
from
$40.49
Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
See More
National – National Bearing Race, HM803110 (Part No.HM803110)
from
$20.79
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
See More
Felpro – Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 6095-1 (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.
See More
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 $35.99.
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
Valvoline – Valvoline Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid 1 GA, 904891 (Part No.904891)
from
$35.99
Choosing an automatic transmission fluid just got easier. Valvoline Full Synthetic MaxLife Multi-Vehicle ATF, the #1 ATF product, is suitable for use in 95% of ATF vehicles in operation with US registered light duty applications. And now, it€™s also recommended for most belt and chain-driven continuously variable transmissions (CVT). Featuring advanced additives to prevent the major causes of transmission breakdown, it€™s designed to help prevent leaks, reduce wear and tear, and maximize performance €“ all for much longer than conventional fluids. It has improved thermal stability for longer fluid life, better viscosity stability for consistent transmission operation, and frictional enhancements for smooth gear engagements. Whether your vehicle has a CVT or traditional automatic, Valvoline MaxLife Multi-Vehicle ATF is suitable for a broad range of transmissions including Ford, GM, Toyota, Honda, Nissan, Hyundai, Subaru, BMW, Mercedes, Volvo, VW and Audi vehicles. It€™s specifically recommended for use in the following applications: GM DEXRON-II, DEXRON-III, DEXRON-VI, and DEX-CVT; Ford MERCON LV; Toyota/Lexus Type T, T-II, T-IV, WS, CVTF FE, and CVTF TC. For the many miles ahead, trust your transmission with Valvoline, the #1 automatic transmission fluid brand.
See More
Best-Selling 1966 GMC PB25 Series Front Differential Pinion Bearings
Upgrade your PB25 Series with one of our 4 best-selling Front Differential Pinion Bearings.
National – National Tapered Roller Bearing Cone, HM88542 (Part No.HM88542)
from
$24.29
Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
See More
National – National Tapered Roller Bearing Cone, HM803146 (Part No.HM803146)
from
$40.49
Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
See More
National – National Bearing Race, HM88510 (Part No.HM88510)
from
$11.99
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
See More
National – National Bearing Race, HM803110 (Part No.HM803110)
from
$20.79
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
See More
Top-Quality Differential Bearings for 1966 GMC PB25 Series
Choose a high-quality OEM or aftermarket Differential Bearing for GMC PB25 Series and enjoy top-notch performance from $13.49.
National – National Multi-Purpose Bearing, KD-11786-Y (Part No.KD-11786-Y)
from
$81.49
Manufactured with premium-grade steel, National taper bearing sets feature crowned raceways and rollers to ensure even load distribution.
See More
National – National Bearing Race, 382S (Part No.382S)
from
$23.29
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
See More
Driveworks – Driveworks Tapered Roller Bearing, S-HM-803110 (Part No.S-HM-803110)
Top Picks for 1966 GMC PB25 Series Rear Differential Cover Gaskets
Invest in one of our 2 durable Rear Differential Cover Gaskets for your 1966 GMC, knowing you’re getting trusted brands and expert craftsmanship.
Felpro – Felpro Differential Carrier Gasket Round Shaped 10 Bolt Hole Gasket, RDS 5090 (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.
See More
Victor Reinz – Victor Reinz Differential Cover Gasket, 71-14868-00 (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.
See More
Our Top-Rated Front Housing Cover Gaskets for 1966 GMC PB25 Series
Make a smart move for your 1966 GMC PB25 Series with our Front Housing Cover Gasket for $9.49.
Felpro – Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 6095-1 (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.
See More
FAQs for 1966 GMC PB25 Series Differentials
What are the best-selling Differentials for 1966 GMC PB25 Series?
Out of 12 Differentials that fit 1966 GMC PB25 Series, the following parts are the top sellers:
- Yukon Gear 3 Qt – Penzoil 80W90 Conventional Gear Oil, 15002 (11644279) – $44.99
- National Multi-Purpose Bearing, KD-11786-Y (3277216) – $81.49
- National Tapered Roller Bearing Cone, HM88542 (3276961) – $24.29
What’s the price range for 1966 GMC PB25 Series Differentials?
The prices of Differentials for the 1966 GMC PB25 Series range from $9.49 up to $81.49 for the most premium parts.
What is the average price of a Differential for a 1966 GMC PB25 Series?
The average price for Differentials for the 1966 GMC PB25 Series is $27.19. 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:
- Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 6095-1 (5189276) – $9.49
- Felpro Differential Carrier Gasket Round Shaped 10 Bolt Hole Gasket, RDS 5090 (19780361) – $9.99
- Victor Reinz Differential Cover Gasket, 71-14868-00 (12547604) – $9.99
- National Bearing Race, HM88510 (3276953) – $11.99
- Driveworks Tapered Roller Bearing, S-HM-803110 (10659680) – $13.49
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 PB25 Series?
As of 8/2/26, 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.