1978 Buick Opel Differentials
Keep Your 1978 Buick Opel in Top Shape with Quality Differentials
Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1978 Buick Opel looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Bearing Kits, Differential Pinion Shaft Nuts, and Differential Oil. 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 $12.49 with an average 4.8 star rating. With over 1,341 reviews and a solid 3 star average, you can shop with confidence knowing other Buick Opel owners approve.
Competitive Prices and Extensive Inventory
The average price for a 1978 Buick Opel Differential at Advance Auto Parts is around $162.91, with a range that starts at $2.99 and goes up to $360.99. With 24 options in stock from 4 trusted brands, finding the right fit is easy. Popular picks like Ring Gear Bolt, Differential Pinion Nut, and Differential Pinion Shim Kit start at just $2.99 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 1978 Buick Opel in peak condition, inside and out.
Find Your Specific 1978 Buick Opel Differentials
Looking for the perfect Differential for your 1978 Buick Opel? You’re in the right place. Below, you’ll find links to various types of Differentials that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Differentials, ensuring durability and a precise fit for your Buick Opel. Whether you’re driving a 1978 model or another popular model year like
1976,
1977, and
1979, we’ve got you covered. Purchasing Differentials from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Differentials that fit your vehicle.
Essential 1978 Buick Opel Differentials
Motive Gear – Differential Master Bearing Kit – Koyo (Part No.R7.5GRBMK)
from
$111.99
Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv
Product Features:
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Product Features:
- MASTER BEARING KIT GM7.5 B MODEL CAR 78-87 METRIC HOUSING
Motive Gear – Differential Bearing Kit – Koyo (Part No.R7.5GRB)
from
$94.99
Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv
Product Features:
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Product Features:
- BRG KIT GM 7.5 ‘B’ MODEL CAR ’78-81 METRIC HOUSING
Motive Gear – Differential Master Bearing Kit – Timken (Part No.R7.5GRBMKT)
from
$119.99
Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv
Product Features:
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Product Features:
- MASTER KIT GM 7.5″ ‘B’ MODEL
Driveworks – Tapered Roller Bearing (Part No.S-19150)
Motive Gear – Differential Pinion Nut (Part No.1260823)
from
$9.29
Motive Gear offers some of the toughest drive train components on the market today. If you are looking for the largest line of performance ring and pinion gear options available with gear sets in a wide range of ratios for nearly every application, both on and off-road, check out Motive Gear. Motive Gear products can be found in the winner’s circle at racing events worldwide. The superior quality of Motive Gear components is the result of years of racing development, outstanding design and state-of-the-art manufacturing methods. Extensive testing is performed on all products by our in-house engineers.
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Motive Gear – Differential Pinion Shim Kit (Part No.1104)
Driveworks – Tapered Roller Bearing (Part No.S-19268)
Motive Gear – Differential Gear Install Kit (Part No.GM7.5IK)
Motive Gear – Performance Differential Ring and Pinion (Part No.G875410)
from
$222.99Product Features:
- GM 10BL 7.5 &7.625 R/P 4.10 MGP 10 3/8 X 18 LH THRED BLTS, PD=1.438
Richmond Gear – RngPnn (Part No.49-0009-1)
from
$360.99
RngPnn
Richmond Gear – RngPnn (Part No.49-0007-1)
from
$360.99
RngPnn
Motive Gear – Performance Differential Ring and Pinion (Part No.G875342X)
Motive Gear – Differential Ring and Pinion (Part No.GM7.5-456)
Motive Gear – Performance Differential Ring and Pinion (Part No.G875308)
Valvoline – MaxLife Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid, 1 Quart (Part No.VV324)
from
$12.49
Valvoline Full Synthetic MaxLife Multi-Vehicle ATF, the No. 1 ATF product, suitable for use in 95% of vehicles. And now, it’s recommended for most belt & 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 & tear, and maximize performance. Has improved thermal stability for longer fluid life, better viscosity stability for consistent transmission operation, and frictional enhancements for smooth gear engagements. Valv MaxLife Multi-Vehicle ATF is suitable for most Ford, GM, Toyota, Honda, Nissan, Hyundai, Subaru, BMW, Mercedes, Volvo, VW & Audi vehicles. Recommended for use in: 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; Honda/Acura ATF-Z1 and Honda CVT; Nissan/Infiniti Matic-D, Matic-J, Matic-K and Matic-S; Hyundai/Kia SP-II, SP-III, SP-IV and SPH-IV; BMW 7045E, ETL 8072B, LA2634 and LT71141; Allison C-4; Mercedes-Benz NAG-1; Volvo 1161521, 1161540, 97340 and 1273.41; Subaru ATF HP, Lineartronic chain CVT and CVT-II, Lineartronic High Torque CVT, and CV-30; and VW/Audi G-052-025-A2 and G-052-162-A1. CURRENTLY UNABLE TO SHIP THIS PRODUCT TO CUSTOMERS LOCATED IN CALIFORNIA
Product Features:
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Product Features:
- FOR USE IN 95% OF VEHICLES INCLUDING MOST CVTs in operation with US registered light duty applications
- HIGH PERFORMANCE CONDITIONING AGENTS prolong seal elasticity to prevent leaks
- IMPROVED DURABILITY & TRANSMISSION LIFE with anti-wear technology to avoid costly repairs
- ENHANCED HIGH & LOW TEMP PERFORMANCE supports transmission fluid in all weather situations
Motive Gear – Ring Gear Bolt (Part No.14066913)
Popular 1978 Buick Opel Differentials Categories
Most Popular Differential Bearing Kits for 1978 Buick Opels
Enhance your 1978 Buick Opel with one of the 5 Differential Bearing Kits we have in stock, starting at just $94.99.
Richmond Gear – Differential Bearing Kit (Part No.83-1016-1)
from
$182.99
Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND.
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Motive Gear – Differential Super Bearing Kit – Timken (Part No.R7.5GRBSKT)
Motive Gear – Differential Master Bearing Kit – Timken (Part No.R7.5GRBMKT)
from
$119.99
Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv
Product Features:
See More
Product Features:
- MASTER KIT GM 7.5″ ‘B’ MODEL
Motive Gear – Differential Master Bearing Kit – Koyo (Part No.R7.5GRBMK)
from
$111.99
Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv
Product Features:
See More
Product Features:
- MASTER BEARING KIT GM7.5 B MODEL CAR 78-87 METRIC HOUSING
Motive Gear – Differential Bearing Kit – Koyo (Part No.R7.5GRB)
from
$94.99
Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv
Product Features:
See More
Product Features:
- BRG KIT GM 7.5 ‘B’ MODEL CAR ’78-81 METRIC HOUSING
Best-Selling 1978 Buick Opel Differential Pinion Shaft Nut
Upgrade your Opel with our best-selling Differential Pinion Shaft Nut with a 1 Starts rating across 1 review.
Motive Gear – Differential Pinion Nut (Part No.1260823)
from
$9.29
Motive Gear offers some of the toughest drive train components on the market today. If you are looking for the largest line of performance ring and pinion gear options available with gear sets in a wide range of ratios for nearly every application, both on and off-road, check out Motive Gear. Motive Gear products can be found in the winner’s circle at racing events worldwide. The superior quality of Motive Gear components is the result of years of racing development, outstanding design and state-of-the-art manufacturing methods. Extensive testing is performed on all products by our in-house engineers.
See More
Top-Quality Differential Oil for 1978 Buick Opels
Choose a high-quality OEM or aftermarket Differential Oil for Buick Opels and enjoy top-notch performance from $12.49.
Valvoline – MaxLife Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid, 1 Quart (Part No.VV324)
from
$12.49
Valvoline Full Synthetic MaxLife Multi-Vehicle ATF, the No. 1 ATF product, suitable for use in 95% of vehicles. And now, it’s recommended for most belt & 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 & tear, and maximize performance. Has improved thermal stability for longer fluid life, better viscosity stability for consistent transmission operation, and frictional enhancements for smooth gear engagements. Valv MaxLife Multi-Vehicle ATF is suitable for most Ford, GM, Toyota, Honda, Nissan, Hyundai, Subaru, BMW, Mercedes, Volvo, VW & Audi vehicles. Recommended for use in: 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; Honda/Acura ATF-Z1 and Honda CVT; Nissan/Infiniti Matic-D, Matic-J, Matic-K and Matic-S; Hyundai/Kia SP-II, SP-III, SP-IV and SPH-IV; BMW 7045E, ETL 8072B, LA2634 and LT71141; Allison C-4; Mercedes-Benz NAG-1; Volvo 1161521, 1161540, 97340 and 1273.41; Subaru ATF HP, Lineartronic chain CVT and CVT-II, Lineartronic High Torque CVT, and CV-30; and VW/Audi G-052-025-A2 and G-052-162-A1. CURRENTLY UNABLE TO SHIP THIS PRODUCT TO CUSTOMERS LOCATED IN CALIFORNIA
Product Features:
See More
Product Features:
- FOR USE IN 95% OF VEHICLES INCLUDING MOST CVTs in operation with US registered light duty applications
- HIGH PERFORMANCE CONDITIONING AGENTS prolong seal elasticity to prevent leaks
- IMPROVED DURABILITY & TRANSMISSION LIFE with anti-wear technology to avoid costly repairs
- ENHANCED HIGH & LOW TEMP PERFORMANCE supports transmission fluid in all weather situations
Our Top Pick for a 1978 Buick Opel Differential Ring Gear Bolt
Invest in a
durable Differential Ring Gear Bolt for your 1978 Buick, knowing you’re getting trusted brands and expert craftsmanship.
Motive Gear – Ring Gear Bolt (Part No.14066913)
Differential Ring and Pinions for 1978 Buick Opels
Make a smart move for your 1978 Buick Opel with products all priced from $175.99 to $360.99.
Motive Gear – Performance Differential Ring and Pinion (Part No.G875390)
Motive Gear – Performance Differential Ring and Pinion (Part No.G875410)
from
$222.99Product Features:
- GM 10BL 7.5 &7.625 R/P 4.10 MGP 10 3/8 X 18 LH THRED BLTS, PD=1.438
Motive Gear – Differential Ring and Pinion (Part No.GM7.5-373A)
Motive Gear – Differential Ring and Pinion (Part No.GM7.5-456)
Motive Gear – Performance Differential Ring and Pinion (Part No.G875342X)
Richmond Gear – RngPnn (Part No.49-0009-1)
from
$360.99
RngPnn
Richmond Gear – RngPnn (Part No.49-0007-1)
from
$360.99
RngPnn
Richmond Gear – RngPnn (Part No.69-0322-1)
from
$350.99
RngPnn
Richmond Gear – RngPnn (Part No.69-0324-1)
from
$350.99
RngPnn
Motive Gear – Performance Differential Ring and Pinion (Part No.G875308)
Motive Gear – Differential Ring and Pinion (Part No.GM7.5-410A)
Motive Gear – Differential Ring and Pinion (Part No.GM7.5-342A)
from
$175.99
All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of our products undergo rigid quality control processes to insure proper fit, performance and longevity. Motive Gear products can be found in the winners circle at NHRA, IHRA, NMRA, NMCA, SODA, SCORE, BITD, Ultra-4 and NASCAR events because we offer unmatched selection and quality demanded by racers and their crew chiefs – the same quality and selection demanded by DIY customers and top mechanics. With four warehouses strategically located across North America, most Motive Gear orders arrive within 2-4 days. Win with Motive Gear!
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Top-Rated Differential Brands For Your 1978 Buick Opel
When it comes to finding the perfect Differential for your 1978 Buick Opel, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 4 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 $12.49. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1978 Buick Opel, providing peace of mind with parts that meet or exceed OEM standards.
Popular Valvoline 1978 Buick Opel Differentials
If you’re looking for a top-quality Differential for your 1978 Buick Opel, 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 $12.49, you’ll find the perfect Differential for your needs and budget. Valvoline Differentials for the 1978 Buick Opel come highly rated, with over 446 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
$12.49
(446)
MaxLife Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid, 1 Quart
“seems to be ok”
FAQs for 1978 Buick Opel Differentials
What are the best-selling Differentials for 1978 Buick Opels?
Out of 24 Differentials that fit 1978 Buick Opels, the following parts are the top sellers:
- Ring Gear Bolt (20520168) – $2.99
- Differential Pinion Nut (10954736) – $9.29
- Differential Pinion Shim Kit (20520209) – $12.99
What’s the price range for 1978 Buick Opel Differentials?
The prices of Differentials for the 1978 Buick Opel range from $2.99 up to $360.99 for the most premium parts.
What is the average price of a Differential for a 1978 Buick Opel?
The average price for Differentials for the 1978 Buick Opel is $162.91. 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.
Does Advance Auto Parts sell Differentials for other Buick Opel model years?
What are the cheapest Differentials for my 1978 Buick Opel?
The cheapest 1978 Buick Opel Differentials we carry are:
- Ring Gear Bolt (20520168) – $2.99
- Tapered Roller Bearing (12544942) – $6.99
- Differential Pinion Nut (10954736) – $9.29
- Tapered Roller Bearing (12545057) – $12.29
- MaxLife Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid, 1 Quart (8020023) – $12.49
Does Advance Auto Parts sell Differentials for any other 1978 Buick models?
Yes. We stock Differentials for 7 other popular 1978 Buick models. Some of the most popular are 1978 Regal Differentials, 1978 Century Differentials, 1978 LeSabre Differentials, 1978 Skylark Differentials, and 1978 Riviera Differentials.
What are the top-rated Differentials that fit the 1978 Buick Opel?
The one 1978 Buick Opel Differential we have in stock is the Ring Gear Bolt. It costs $2.99.
What types of Differentials do you sell for my 1978 Buick Opel?
As of 6/2/26, these are some of the most in-demand types of Differentials for a 1978 Buick Opel:
Can I get help with 1978 Buick Opel 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 Opel Differentials?
Advance Auto Parts keeps returns simple. For new Buick Opel Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.