1989 Buick Park Avenue Differentials

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Keep Your 1989 Buick Park Avenue in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1989 Buick Park Avenue looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Rear Differential Cover Gaskets, Differential Bearings, and Differential Pinion 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 Motive Gear, National, and Powertrax. For example, Motive Gear Differentials start at just $7.99 with an average 4.0 star rating. National and Powertrax offer similar pricing and quality, backed by strong customer feedback. With over 668 reviews and a solid 4 star average, you can shop with confidence knowing other Buick Park Avenue owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1989 Buick Park Avenue Differential at Advance Auto Parts is around $205.08, with a range that starts at $2.99 and goes up to $865.99. With 62 options in stock from 13 trusted brands, finding the right fit is easy. Popular picks like Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, Tapered Roller Bearing Cone, and Ring Gear Bolt 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 CV Axles and Joints and Drive Shafts and Axles. At Advance Auto Parts, we’re here to help you keep your 1989 Buick Park Avenue in peak condition, inside and out.

Looking for the perfect Differential for your 1989 Buick Park Avenue? 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 Park Avenue. Whether you’re driving a 1989 model or another popular model year like 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, and 2005, 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 1989 Buick Park Avenue Differentials

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$10.99

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:

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

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$187.99

Product Features:

FULL SPOOL GM 10 BOLT 8.5 28 SPL ST

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$10.99

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

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$7.99

High-quality Differential Component Shim

Product Features:

SHIM KIT FITS-8.25-F7.5-AMC20-GM0

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$221.99

Yukon Bearing Installation Kits are perfect for shops and builders who have shims on the shelf and are looking to save cost over a Master Overhaul Kit. This kit uses Timken bearings and races along with all high-quality small parts. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to properly install your ring and pinion gear set.

Product Features:

Fits GM 8.5″ rear
Included are carrier bearings and races, pinion bearings and races, pinion seal, crush sleeve , marking compound and brush.

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$214.99

Yukon 35 spline (outside spline) male coupler for 9″ Ford. All Yukon yokes come with a Limited warranty against manufacturing defects.

Product Features:

Spider gear kit
Fits GM 8.5″ 30 spline open differential
Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers.

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$2.99

Product Features:

RING GEAR BOLT 8.5″ 7.5″ 7/16 X 20 LEFT HAND

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$25.99

Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.

Product Features:

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

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$351.99

RngPnn

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$9.99

Our wheel seals are engineered using only the highest-quality materials to meet vehicle manufacturer specificatons. We work with suppliers to design seals that meet FAG’s quality standards. Seals are designed to protect wheel end components from contamination – such as dirt, dust, and moisture – and prevent the loss of grease over the life of the bearing. The specifications for wheel seals are very demanding, and the type required depends on the specific application, position and vehicle class.

Product Features:

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

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$503.99

For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!

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$368.99

For vehicles that are driven daily, the Power Trax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Power Trax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Power Trax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Power Trax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds.

Product Features:

The Power Trax Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Power Trax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.
Power Trax lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.
Power Trax offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.
Power Trax ia an Extreme Traction System

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$544.99

The Power Trax Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Power Trax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.
Power Trax lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.
Power Trax offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.
Power Trax ia an Extreme Traction System

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$7.99

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

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$12.99

High Performance Motor Oil API LICENSED MOTOR OIL Royal Purple High Performance Motor Oil combines premium base oils with proprietary additive technologies to create a high performance synthetic engine oil that optimizes performance and protection. Royal Purple High Performance Motor Oils carry the current API and ILSAC engine oil licenses, as well as the GM dexos1 gasoline engine oil approval. ILSAC GF-6 AND GM DEXOS1 Modern gasoline direct injection (GDI) engines have achieved levels of power and fuel economy never before possible in passenger car engines. As a result, smaller engines operate at much higher loads across all engine speeds. This has caused increased wear in critical areas of the engine, and created a destructive phenomenon called low-speed pre-ignition (LSPI). The unique, state-of-the-art additive technology in Royal Purple High Performance engine oils is designed specifically to address these issues, and help engines maintain performance and reliability.

Product Features:

Better Wear Protection
Increased Protection against Low Speed Pre-Ignition
Increased Fuel Efficiency
Better Protection for Vehicle Exhaust Emissions Equipment
Improved Compatibility with Fuels Containing Ethanol
Superior Corrosion Protection
Made in USA

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$66.99

Royal Purple HMX SAE 5W-30 High-Mileage Synthetic Motor Oil, 5 quart is specifically designed to minimize wear and restore lost performance in engines with more than 75,000 miles. Formulated with robust zinc/phosphorus anti-wear compounds combined with Royal Purple’s proprietary additive technology Synerlec, HMX is chemically enhanced to revitalize hardened seals, reducing oil consumption common in high-mileage engines. In addition, HMX is fortified with stout detergents to remove engine build-up and deposits, maintain cleanliness and promote engine longevity.

Product Features:

Specifically designed to minimize wear and restore lost performance in engines with more than 75,000 miles
Formulated with robust zinc/phosphorus anti-wear compounds combined with Royal Purple’s proprietary additive technology
HMX is chemically enhanced to revitalize hardened seals, reducing oil consumption common in high-mileage engines
Reduces friction and metal-to-metal contact for peak engine performance
Also provides outstanding oxidation resistance to safely extend oil drain intervals, and an ionic attraction to metal surfaces, providing protection and minimizing wear at start-up

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$221.99

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$4.99

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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$209.99

USA Standard Master Overhaul kits let you finish your install with confidence. This kit uses Koyo bearings and races. Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve (if applicable), oil baffles and slingers (if applicable), threading locking compound, marking compound with brush and gasket.

Product Features:

Spider gear kit
Fits GM 8.5″ 28 spline open differential
Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers.

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$307.99

Pro-King is the leading supplier of transmission and driveline products in the aftermarket. All products are designed to meet or exceed OE quality, form, fit and function.

Product Features:

Meets or exceeds OE specifications
Dual heat treating process

Popular 1989 Buick Park Avenue Differentials Categories

Differential Oil

Rear Differential Cover Gaskets

Differential Open Unit and Components

Differential Bearings

Differential Axle Shafts

Differential Cover Bolts

Differential Carriers

Differential Bearing Kits

Front Differential Pinion Bearings

Differential Spider Gear Kits

Differential Carrier Shim Kits

Differential Pinion Seals

Differential Ring and Pinions

Differential Spools

Complete Differentials

Differential Ring Gear Bolts

Differential Crush Sleeves

Differential Pinion Shims

Differential Carrier Bearing Races

Most Popular Rear Differential Cover Gasket for 1989 Buick Park Avenues

Enhance your 1989 Buick Park Avenue with this popular Rear Differential Cover Gasket we have in stock, for $10.99.

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$10.99

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 1989 Buick Park Avenue Differential Bearings

Upgrade your Park Avenue with one of our 4 best-selling Differential Bearings, earning an average 4.33 stars rating across 7 reviews.

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$11.99

Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.

Product Features:

PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
SMOOTH ROTATION – Crowned raceways 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

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$10.99

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

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$21.99

Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.

Product Features:

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

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$10.99

With advanced load-carrying capacity and compact design, tapered roller bearings are used in wheel bearings, transmissions, differentials, transfer cases and other miscellanous applications. FAG manufacturers over 100 million tapered roller bearings annually.

Product Features:

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

Top-Quality Differential Pinion Seals for 1989 Buick Park Avenues

Choose a high-quality OEM or aftermarket Differential Pinion Seal for Buick Park Avenues and enjoy top-notch performance from $9.99.

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$9.99

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

Our Top Pick for a 1989 Buick Park Avenue Differential Axle Shaft

Invest in a durable Differential Axle Shaft for your 1989 Buick, knowing you’re getting trusted brands and expert craftsmanship.

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$307.99

Pro-King is the leading supplier of transmission and driveline products in the aftermarket. All products are designed to meet or exceed OE quality, form, fit and function.

Product Features:

Meets or exceeds OE specifications
Dual heat treating process

Top-Rated Differential Oil for 1989 Buick Park Avenues

Make a smart move for your 1989 Buick Park Avenue with products all priced from $12.49 to $44.99.

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$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:

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

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$44.99

Union 76 gear oil is a conventional non-synthetic 80W90 formulation designed for all types of differentials.

Product Features:

Includes three quarts of conventional oil

Top-Rated Differential Brands For Your 1989 Buick Park Avenue

When it comes to finding the perfect Differential for your 1989 Buick Park Avenue, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 13 trusted brands. We carry the most popular Differential brands including Powertrax, National, and Motive Gear, and more, all known for their exceptional customer ratings (average brand rating of 5.0 stars) and competitive prices, as low as $7.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1989 Buick Park Avenue, providing peace of mind with parts that meet or exceed OEM standards.

Popular Powertrax 1989 Buick Park Avenue Differentials

If you’re looking for a top-quality Differential for your 1989 Buick Park Avenue, Advance Auto Parts has exactly what you need with our selection of Powertrax Differentials. We have 1 Powertrax Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $503.99, you’ll find the perfect Differential for your needs and budget. Powertrax Differentials for the 1989 Buick Park Avenue come highly rated, with over 1 customer reviews and an impressive average rating of 5.0 stars. Choosing a Powertrax Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.

from $503.99

(1)

Grip LS Traction System

“Purschased this unit for my 2007 yukon and i am very pleased. This unit is is a great upgrade from the gov lock system found in 1/2 ton suv’s. I woul”

Top-Quality National 1989 Buick Park Avenue Differentials

For those in search of a high-quality Differential for their 1989 Buick Park Avenue, Advance Auto Parts offers a great selection of National Differentials. With 2 National Differentials in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Differentials start at just $11.99, with an average price of $18.99, giving you a range of options to suit your budget. Backed by over 9 customer ratings and an average rating of 4.3 stars, National Differentials provide both reliability and excellent performance. Choosing a National Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.

from $11.99

(2)

Bearing Race

“Reasonable price and woks well. front diff 2006 Escalade esv”

from $25.99

(7)

Tapered Roller Bearing Cone

“Good price”

FAQs for 1989 Buick Park Avenue Differentials

What are the best-selling Differentials for 1989 Buick Park Avenues?

Out of 62 Differentials that fit 1989 Buick Park Avenues, the following parts are the top sellers:

Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket (5185823) – $10.99
Tapered Roller Bearing Cone (5052513) – $25.99
Ring Gear Bolt (20520168) – $2.99

What’s the price range for 1989 Buick Park Avenue Differentials?

The prices of Differentials for the 1989 Buick Park Avenue range from $2.99 up to $865.99 for the most premium parts.

What is the average price of a Differential for a 1989 Buick Park Avenue?

The average price for Differentials for the 1989 Buick Park Avenue is $205.08. 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 Park Avenue model years?

Yes, we carry Differentials for 14 model years of Buick Park Avenues between 1991 and 2005. The following model years are the most popular for Differential purchases: 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1998, and 1997.

What are the cheapest Differentials for my 1989 Buick Park Avenue?

The cheapest 1989 Buick Park Avenue Differentials we carry are:

Ring Gear Bolt (20520168) – $2.99
Differential Cover Bolt (50333283) – $2.99
Differential Crush Sleeve (10715253) – $4.99
Differential Pinion Shim Kit (20520100) – $7.99
Taper Bearing Cup (5052491) – $7.99

Does Advance Auto Parts sell Differentials for any other 1989 Buick models?

Yes. We stock Differentials for 7 other popular 1989 Buick models. Some of the most popular are 1989 Regal Differentials, 1989 Century Differentials, 1989 LeSabre Differentials, 1989 Skylark Differentials, and 1989 Riviera Differentials.

What are the top-rated Differentials that fit the 1989 Buick Park Avenue?

Based on 668 reviews by customers, our 1989 Buick Park Avenue Differentials have an average customer rating of 4 stars. These are the highest-rated categories of Differentials for the 1989 Buick Park Avenue and their top-rated products:

Differential Pinion Shims
- Differential Pinion Shim Kit (20520100) – $7.99
Differential Open Unit and Components
- Grip LS Traction System (11470453) – $503.99

What types of Differentials do you sell for my 1989 Buick Park Avenue?

As of 6/2/26, these are some of the most in-demand types of Differentials for a 1989 Buick Park Avenue:

Can I get help with 1989 Buick Park Avenue 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 Park Avenue Differentials?

Advance Auto Parts keeps returns simple. For new Buick Park Avenue Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

1989 Buick Park Avenue Differentials

Felpro – Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket (Part No.RDS 55028-1)

Motive Gear – Differential Spool (Part No.FS10-28)

Driveworks – Taper Bearing Cone (Part No.S-LM-501349)

Motive Gear – Differential Pinion Shim Kit (Part No.1100)

Yukon Gear – Bearing Install Kit for GM 8.5" Differential (Part No.11067)

USA Standard Gear – Differential Spider Gear Kits (Part No.39027)

Motive Gear – Ring Gear Bolt (Part No.14066913)

National – Tapered Roller Bearing Cone (Part No.M802048)

Richmond Gear – RngPnn (Part No.69-0169-1)

Schaeffler – Shaft Seal (Part No.SS2983)

Powertrax – Grip LS Traction System (Part No.LS201030)

Powertrax – Differential Lock Assembly (Part No.1921-LR)

Powertrax – Differential Lock Assembly (Part No.9207853005)

Driveworks – Taper Bearing Cup (Part No.S-LM-501314)

Royal Purple – High Performance 5W-30 Synthetic Motor Oil, Better Wear Protection, 1 Quart (Part No.01530)

Royal Purple – HMX 5W-30 High Mileage Synthetic Motor Oil, Restores Engine Performance, 5 Quart (Part No.11748)

Motive Gear – Differential Carrier (Part No.GM8.6L)

Motive Gear – Differential Crush Sleeve (Part No.1234726)

USA Standard Gear – Differential Spider Gear Kits (Part No.39026)

Pro-King – Rear Axle Shaft Kit (Part No.AXK-233)

Felpro – Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket (Part No.RDS 55028-1)

National – Bearing Race (Part No.LM501314)

Driveworks – Taper Bearing Cone (Part No.S-LM-501349)

National – Tapered Roller Bearing Cone (Part No.LM501349)

Schaeffler – Cup (Part No.M88010)

Schaeffler – Shaft Seal (Part No.SS2983)

Pro-King – Rear Axle Shaft Kit (Part No.AXK-233)

Valvoline – MaxLife Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid, 1 Quart (Part No.VV324)

Yukon Gear – 3 Qt – Penzoil 80W90 Conventional Gear Oil (Part No.15002)