1985 Buick Somerset Regal Differentials
Keep Your 1985 Buick Somerset Regal in Top Shape with Quality Differentials
Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1985 Buick Somerset Regal looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Oil and Differential 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 Valvoline. For example, Valvoline Differentials start at just $14.49 with an average 4.8 star rating. With over 8 reviews and a solid 5 star average, you can shop with confidence knowing other Buick Somerset Regal owners approve.
Competitive Prices and Extensive Inventory
The average price for a 1985 Buick Somerset Regal Differential at Advance Auto Parts is around $16.82, with a range that starts at $11.99 and goes up to $23.99. With 3 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart and Camshaft Seal start at just $11.99 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 CV Axles and Joints and Drive Shafts and Axles. At Advance Auto Parts, we’re here to help you keep your 1985 Buick Somerset Regal in peak condition, inside and out.
Essential 1985 Buick Somerset Regal Differentials
Driveworks – Camshaft Seal (Part No.S-99139)
Valvoline – DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (Part No.798153)
from
$11.99
Valvoline DEX/MERC ATF is a high-quality transmission fluid formulated to meet the challenging demands of many automatic transmissions. Its responsive low-temperature fluidity is beneficial in both electronic and hydraulic controlled transmissions and transaxles. Recommended for use in the following applications: MERCON*, DEXRON*-III, Ford M2C138-CJ and M2C166-H, Allison C-4 and TES-389, and Caterpillar TO-2.
Product Features:
See More
Product Features:
- Formulated with premium 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
Popular 1985 Buick Somerset Regal Differentials Categories
Most Popular Differential Oil for 1985 Buick Somerset Regals
Enhance your 1985 Buick Somerset Regal with one of the 2 Differential Oil we have in stock, starting at just $11.99.
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
Valvoline – DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (Part No.798153)
from
$11.99
Valvoline DEX/MERC ATF is a high-quality transmission fluid formulated to meet the challenging demands of many automatic transmissions. Its responsive low-temperature fluidity is beneficial in both electronic and hydraulic controlled transmissions and transaxles. Recommended for use in the following applications: MERCON*, DEXRON*-III, Ford M2C138-CJ and M2C166-H, Allison C-4 and TES-389, and Caterpillar TO-2.
Product Features:
See More
Product Features:
- Formulated with premium 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 1985 Buick Somerset Regal Differential Seal
Upgrade your Somerset Regal with our best-selling Differential Seal.
Driveworks – Camshaft Seal (Part No.S-99139)
Top-Rated Differential Brands For Your 1985 Buick Somerset Regal
When it comes to finding the perfect Differential for your 1985 Buick Somerset Regal, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 2 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 1985 Buick Somerset Regal, providing peace of mind with parts that meet or exceed OEM standards.
Popular Valvoline 1985 Buick Somerset Regal Differentials
If you’re looking for a top-quality Differential for your 1985 Buick Somerset Regal, Advance Auto Parts has exactly what you need with our selection of Valvoline Differentials. We have 1 Valvoline Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $14.49, you’ll find the perfect Differential for your needs and budget. Valvoline Differentials for the 1985 Buick Somerset Regal come highly rated, with over 2 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”
FAQs for 1985 Buick Somerset Regal Differentials
What are the best-selling Differentials for 1985 Buick Somerset Regals?
Out of 3 Differentials that fit 1985 Buick Somerset Regals, the following parts are the top sellers:
- DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (12079139) – $11.99
- Camshaft Seal (11494113) – $23.99
What’s the price range for 1985 Buick Somerset Regal Differentials?
The prices of Differentials for the 1985 Buick Somerset Regal range from $11.99 up to $23.99 for the most premium parts.
What is the average price of a Differential for a 1985 Buick Somerset Regal?
The average price for Differentials for the 1985 Buick Somerset Regal is $16.82. 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 1985 Buick Somerset Regal?
The cheapest 1985 Buick Somerset Regal Differentials we carry are:
- DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (12079139) – $11.99
- DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart (12079201) – $14.49
- Camshaft Seal (11494113) – $23.99
Does Advance Auto Parts sell Differentials for any other 1985 Buick models?
Yes. We stock Differentials for 6 other popular 1985 Buick models. Some of the most popular are 1985 Regal Differentials, 1985 Century Differentials, 1985 LeSabre Differentials, 1985 Skylark Differentials, and 1985 Riviera Differentials.
What are the top-rated Differentials that fit the 1985 Buick Somerset Regal?
The one 1985 Buick Somerset Regal Differential we have in stock is the DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart. It costs $11.99.
What types of Differentials do you sell for my 1985 Buick Somerset Regal?
As of 11/2/25, these are some of the most in-demand types of Differentials for a 1985 Buick Somerset Regal:
Can I get help with 1985 Buick Somerset Regal Differential orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Buick Differentials and more.
What is your return policy for Buick Somerset Regal Differentials?
Advance Auto Parts keeps returns simple. For new Buick Somerset Regal Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.