1981 Cadillac Fleetwood Differentials

Find your specific 1981 Cadillac Fleetwood original or aftermarket Differentials below. Order your parts online and have delivered to your home or pick up in-store at Advance Auto.

Essential 1981 Cadillac Fleetwood Differentials

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$5.99

This differential pinion shaft lock bolt is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:

Direct replacement – this differential pinion shaft lock bolt matches the fit and function of the factory part on specified years, makes and models.
Ideal solution – this bolt is a reliable replacement for an original part that is missing or has failed due to fatigue
Durable construction – this part is made from quality materials to ensure reliable performance and long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

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$551.99

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!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.

Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.

Powertrax® 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.

Powertrax® = Extreme Traction Systems!

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$13.29

CUP

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$58.99

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!

Product Features:

For over 80-years, the Richmond Double-Diamond logo has represented some of the highest quality gears in the racing industry. Winners Run Richmond!
The superior quality of Richmond gearsets is a result of outstanding design, world class manufacturing and an extensive testing process that is performed on all products.
Richmond performance gearsets have been winners for decades at: NHRA, NMRA, NMCA, Daytona 500, WISSOTA and U.S. Nationals.
Richmond Gear is a leading manufacturer of high performance ring and pinion gearsets and drivetrain components, backed by a two year warranty.
Engineered to perform faster and be more reliable, Richmond performance drivetrain products are the result of a continuous research and development program combined with state-of-the-art manufacturing capabilities.

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$3.99

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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$148.99

Redline Synthetic “Shock Proof” Oil with positraction Additive. 4 Quarts.

Product Features:

Includes four quarts of Redline Shockproof oil and one 4oz bottle of Yukon positraction additive

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$25.49

National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

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

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$153.99

Product Features:

GM10 BOLT 8.5″ 30 SPL INTERNAL KIT 1988-1999 (OPEN)

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$12.99

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KIT SHIM

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$1.99

Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

Product Features:

All products are designed to meet or exceed OE quality, form, fit and funtion.

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$58.49

Product Features:

MINI-INSTLTN KT-9 1/2″ GM

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$1566.99

21 Piece bearing race driver set. (Box wt: 140lbs) No return.

Product Features:

Bearing race driver set
21 pieces
All steel construction

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$4.29

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$6.49

This differential crush sleeve is designed to match the fit and function of the original sleeve on specified vehicles, and is engineered for durability and reliable performance.

Product Features:

Direct replacement – this differential crush sleeve is designed to match the fit and function of the original sleeve on specified vehicles.
Required replacement – when servicing the differential
Durable construction – this part is made from quality materials to ensure reliable performance and long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

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$19.09

Differential Cover G

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$7.49

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

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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$7.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

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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$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

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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$224.99

Product Features:

GM 10BL 8.5 R/P 3.42 MG FRT/REAR

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$216.99

Product Features:

GM 10BL 7.5&7.625 R/P 4.56 MG

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$27.99

Product Features:

Brand may vary by location

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$38.99

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:

Designed to repair damaged, grooved or worn shafts
Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
Easy to install with removable flange and installation tool
Installation tool reduces sleeve distortion and allows for installation without removal from the shaft

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$182.99

RngPnnInstlKt

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$551.99

If you’re repairing or rebuilding a front or rear differential and want the best performance and longevity from the bearings being replaced, choose this premium differential kit. It includes high-precision bearings manufactured to tighter tolerances and engineered to last longer than common lower-grade bearings that have more backlash when subjected to the torque generated within the differential. This convenient kit also saves the time needed to source individual components. Check the product attributes and fitment details to select the correct premium differential kit for your application.

Product Features:

Ideal solution – this premium differential bearing kit features high-precision bearings to help ensure longer bearing life, prevent backlash, and restore proper differential operation
Direct replacement – the components in this all-in-one kit are engineered to precisely match the fit and function of the original equipment bearings for a seamless installation
Increased reliability – the premium bearings in this kit are manufactured to exacting tolerances and specifications from high quality materials to help ensure optimal performance
Application-specific – check the product attributes and fitment details to choose the correct kit for your application

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$6.59

Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

Product Features:

All products are designed to meet or exceed OE quality, form, fit and funtion.

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$480.99

Popular 1981 Cadillac Fleetwood Differentials Categories

Differential Oil

Rear Differential Cover Gaskets

Differential Open Unit and Components

Differential Pinion Shaft Lock Bolts

Differential Bearings

Differential Pinion Pilot Bearings

Differential Bearing Kits

Front Differential Pinion Bearings

Differential Carrier Shim Kits

Differential Pinion Seals

Differential Cover Plugs

Differential Ring and Pinions

Differential Carrier Bearings

Rear Housing Cover Gaskets

Complete Differentials

Differential Ring Gear Bolts

Bearing Race Drivers

Differential Crush Sleeves

Differential Pinion Shims

Differential Gear Install Kits

Maybe you’re in the middle of a full rebuild of that 1981 Cadillac Fleetwood. Maybe you just need a couple of Differentials. Either way, Advance Auto Parts has 63 different Differentials in our inventory ranging from $1.99 to $1,566.99. That means you can find the exact parts or products you need to keep that 1981 Cadillac Fleetwood running smoothly.

Differentials are only as good as their brand. We stock 11 different brands to make sure you have plenty of trusted parts to choose from for your 1981 Cadillac Fleetwood. Valvoline, FELPRO, and Motive Gear are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Differentials for your 1981 Cadillac Fleetwood, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 1,300 reviews in this category, some of the top rated parts include Differential Shaft Lock Bolt with 4.0 stars and Bearings with 3.9 stars.

So if you’re in the market for aftermarket Differentials to keep your 1981 Cadillac Fleetwood rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Differentials Brands To Make Your 1981 Cadillac Fleetwood Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1981 Cadillac Fleetwood demands trusted brand parts and products to keep it running. Many trusted brands of Differentials make up Advance Auto Parts’ inventory, and all are ready to help make your Fleetwood the best it can be. Be sure to browse some of our top Differentials brands and parts.

Popular Driveworks Differentials

We carry Driveworks parts in our stock across Differential Pinion Seals categories, plus more. For a 1981 Cadillac Fleetwood, our most popular Driveworks Differentials include:

from $7.79

(1)

Oil Seal

Differential Pinion Seals

Top 1981 Cadillac Fleetwood Differentials from Felpro

Felpro products are another trusted brand when it comes to Differentials for your 1981 Cadillac Fleetwood. Popular Felpro parts include:

from $9.99

(195)

Differential Cover Gasket

Rear Differential Cover Gaskets

from $7.49

(7)

Differential Cover Gasket

Rear Housing Cover Gaskets

FAQs for 1981 Cadillac Fleetwood Differentials

What are the most purchased Differentials for the 1981 Cadillac Fleetwood?

Out of 63 Differentials for the 1981 Cadillac Fleetwood, the most popular in our inventory are:

from $14.49

(2)

DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart

Differential Oil

from $35.99

(17)

DEX/MERC Automatic Transmission Fluid, 1 Gallon

Differential Oil

from $57.99

This product is not rated

3 Qt – 80W90 Conventional Gear Oil With Posi Additive

Differential Oil

What are the top-rated 1981 Cadillac Fleetwood Differentials?

Top-rated Differentials for your 1981 Cadillac Fleetwood based on customer reviews/ratings are:

from $5.99

(11)

Differential Shaft Lock Bolt

“great”

from $23.99

(7)

Bearings

“Good price”

from $156.99

(5)

Differential Master Bearing Kit – Koyo

“was delivered as promised and on time”

1981 Cadillac Fleetwood Differentials

More 1981 Cadillac Fleetwood Differentials

Essential 1981 Cadillac Fleetwood Differentials

Dorman – Help – Differential Shaft Lock Bolt (Part No.81048)

Powertrax – No-Slip Traction System (Part No.9207883005)

FAG US – CUP (Part No.LM104911)

Richmond Gear – Differential Spool Bearing Kit (Part No.29-0013-1)

Motive Gear – Pinion Seal (Part No.8610)

Yukon Gear – Redline Synthetic "Shock Proof" Oil With Positraction Additive – 4 Quarts (Part No.15005)

National – Bearings (Part No.HM89449)

Motive Gear – Differential Carrier Gear Kit (Part No.GM10BI-30)

Motive Gear – Differential Pinion Shim Kit (Part No.1104)

Pro-King – Differential Ring Gear Bolt (Part No.742G935)

Motive Gear – Differential Gear Install Kit (Part No.GM9.5IK)

Yukon Gear – Bearing Race Driver Set, 21 Piece (Part No.56030)

Motive Gear – Crush Sleeve (Part No.1234726)

Dorman – Help – Pinion Crush Sleeves (Part No.81058)

Mahle – Differential Cover G (Part No.J7018826576MAH)

Felpro – Differential Cover Gasket (Part No.RDS 55029)

Felpro – Differential Cover Gasket (Part No.RDS 55387)

Felpro – Differential Cover Gasket (Part No.RDS 55028-1)

Motive Gear – Differential Ring and Pinion (Part No.GM10-342)

Motive Gear – Differential Ring and Pinion (Part No.GM7.5-456)

Driveworks – Wheel Bearing (Part No.S-R1581-TV)

National – Shaft Repair Sleeve (Part No.99152)

Richmond Gear – RngPnnInstlKt (Part No.83-1044-1)

Dorman – Premium Ring And Pinion Master Bearing And Installation Kit (Part No.797-115)

Pro-King – Differential Cover Plug (Part No.742G484)

Powertrax – Grip LS Traction System (Part No.LS231230)

Popular 1981 Cadillac Fleetwood Differentials Categories