1985 Oldsmobile 442 Differentials

Find your specific 1985 Oldsmobile 442 original or aftermarket Differentials below. Order your parts online and have delivered to your home or pick up in-store at Advance Auto.

Essential 1985 Oldsmobile 442 Differentials

from

$9.99

Pinion nut for GM 7.2″ IFS, 7.5″, 7.6″, 7.6″ IFS, 8.0″, 8.25″, 8.5″, 8.6″, 9.25″ IFS, 9.5″ & Oldsmobile Dropouts. 1 1/4″ socket, 7/8″ x 14 thread.

Product Features:

Pinion nut for GM 7.2″, 7.5″, 7.625″, 8.0″, 8.25″ IFS, 8.5″, 8.6″, 9.25″ IFS and 9.5″
7/8″ x 14 thread
1 1/4″ socket

from

$26.49

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.

from

$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:

Fits 1982-1999 GM 7.5″ and 7.625″
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, thread locker, marking compound with brush and gasket.

from

$6.99

Ring gear bolt for GM 7.5″, 7.6″, 7.6″ IRS, 8.0″, 8.25″ IFS, 8.5″, 8.6″ & 8.6″ IRS. 7/16″ x 20.

Product Features:

Ring gear bolt for GM 7.5″, 7.625″, 7.6″ IRS, 8.0″, 8.25″ IFS, 8.5″, 8.6″ and 8.6″ IRS
7/16″ x 20

from

$889.99

The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence & performance you need. Get longer life and better traction with the heavy duty Yukon Dura Grip Positraction. The Yukon Dura Grip uses a nodular case and forged 4320 internals for added strength along with composite clutches for high performance and long life. All units are Rebuildable and many offer upgrades to increase aggressiveness for racing applications. Each unit carries a one year warranty against defects.

Product Features:

Fits GM 7.5″ and 7.625″ with 26 spline axles
3.23 ratio and up only
4-spring, clutch style positraction
Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
Fully rebuildable
Assembled in the USA

from

$232.99

8.5″ GM EXTRA HD standard Open case (uses larger bearings).

Product Features:

Standard open carrier case
Fits GM 8.5″ with 28 or 30 spline axles
2.73 and up ratio only
Does not include spider gears
Has larger carrier carrier bearing journals for high strength

from

$119.99

HM89249 set-up bearing (one bearing). No return.

Product Features:

Set up bearing
Fits HM89249 pinion bearing
Easily slips on and off pinion journal to allow for pinion depth adjustment

from

$14.99

Pinion nut washer for GM 7.2″ IFS, 7.5″, 7.6″, 7.6″ IFS, 8.5″, 8.6″ & 9.5″.

Product Features:

Pinion nut washer for GM 7.2″ IFS, 7.5″, 7.625″, 7.6″ IFS, 8.5″, 8.6″ and 9.5″.

from

$6.99

Cross pin bolt for Chrysler 8.25″, 9.25″ rear, Ford 7.5″, 8.8″, GM 12 bolt car & truck, 7.2″ IFs, 7.5″, 7.6″, 8.0″, 8.25″ IFS & 8.5″.

Product Features:

Cross pin bolt for Chrysler 8.25″ and 9.25″ rear, Ford 7.5″ and 8.8″, GM 12 botl car and truck, 8.5″, 8.25″ IFS, 8.0″, 7.625″, 7.5″ and 7.2″ IFS

from

$234.99

Yukon cast yoke for GM 8.5″ with a 1350 U/joint size. 3.625″ snap ring span, 1.188″ cap diameter. Outside snap ring. This yoke uses straps. All Yukon yokes come with a one year warranty against manufacturing defects.

Product Features:

Fits GM 8.5″
30 spline
1350 u-joint size
Outside snap ring design
3.625″ snap ring span
1.188″ cap diameter
Strap style

from

$689.99

The Yukon carrier bearing Puller works with an impact gun to quickly and safely remove carrier bearings without damaging them. This unit comes with a handy bench top stand and works with up to most standard one ton applications. This unit is works with differentials up to one-ton applcations. It is not compatible with Dana 70HD, Dana 80, 10.25″ & 10.5″ Ford, or GM & Chrysler 11.5″ differentials.

Product Features:

Carrier bearing puller
Works with an impact gun to safely and easliy remove carrrier bearings
Not compatible with Dana 70HD, Dana 80, Ford 10.25″ and 10.5″ or Gm and Chrysler 11.5″ applications

from

$8.99

7.5 & 7.625 Standard Open Pinion gear Thrust Washer.

Product Features:

Pinion gear thrust washer for GM 7.5″ and 7.625″
Fits standard open differentials only

from

$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!

from

$202.99

14 plate DURAGRIP COMPOSITE clutches, GM 7.5.

Product Features:

Clutch kit
Fits GM 7.5″ and 7.625″ with Dura Grip positraction
Steel clutches

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$649.99

The Spartan Locker, by USA Standard Gear, provides reliable traction at a low cost. Give your vehicle great traction and save some cash. Choose a Spartan Locker for better traction. The Spartan locker by USA standard gear is a mechanical locker that replaces the spiders in a standard case. The Spartan locker’s design does not use the thrust washers and has a revolutionary spring and pin design that makes installation a snap! The couplers and drivers are made from 9310 steel, for added strength. Each Spartan locker carries a one year warranty against defect.

Product Features:

Fits GM 18.5″ with 30 spline axles
Made from 9310 steel for added strength
Replaces the spiders in a standard carrier case

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$99.99

Redline Synthetic “Shock Proof” Oil. 3 Quarts.

Product Features:

Includes three quarts of Redline Shockproof oil

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$449.99

Yukon Ring & Pinion sets give you the confidence of knowing you’re running gears designed for the harshest of conditions. Whether it’s on the street, off-road, or at the track; Yukon ring & pinion sets deliver unrivaled performance & quality. Yukon uses the latest designs and manufacturing technologies to provide a quiet running gear that is strong and easy to set up. All Yukon ring & pinion sets come standard with a one-year warranty.

Product Features:

Fits GM 7.5″ and 7.6″
7.50″ ring gear diameter
27 spline pinion
10 ring gear bolts
4.11 ratio

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$27.49

SHAFT SEAL

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$9.49

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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$273.99

Yukon 1541H alloy rear axle for GM 7.5″ Passenger, Monte Carlo and El Camino with a length of 28-7/16 inches and 26 splines. Yukon 1541H alloy axles offer a strength increase over stock while retaining a low cost. Yukon 1541H alloy rear axles come with a one year warranty against manufacturing defects. This is a C-clip axle.

Product Features:

Fits GM 7.5″ in Monte Carlo and El Camino
26 spline
28 7/16″ long

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$8.49

High-quality Differential Carrier Shim Kit

Product Features:

CARRIER SHIMS 12 BOLT GM CAR & TRUCK ALSO GM8.6″ 99-ON

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$124.99

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.

from

$4.99

This engine oil drain plug is designed to match the fit and function of an original equipment plug on specified vehicles. It is engineered to replace a missing or damaged plug & help ensure a secure seal.

Product Features:

Direct replacement – this engine oil drain plug is designed to match the fit and function of an original equipment plug on specified vehicles.
Ideal solution – engineered to replace a missing or damaged plug and help ensure a secure seal
Durable construction – designed and manufactured to strict specifications for reliable performance
Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience

from

$109.99

Yukon Carrier installation kits are great, low cost kit for carrier changes such as Positraction or locker upgrades. Carrier installation kit for GM 8.2″ & 8.5″ differential. This kit contains carrier bearings, races and shims.

Product Features:

Fits GM 7.5″, 7.625″ 8.2″ and 8.5″
Includes carrier bearings and races and “super” carrier shim kit

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$10.99

8.2″ & 8.5″ rear cover gasket.

Product Features:

Cover gasket
Fits GM 8.2″, 8.5″ and 8.6″

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$8.99

Positraction clutch guide.

Product Features:

Clutch guide for Chrysler 9.25″, Dana Spicer 44, Dana Spicer 50, Ford 8.8″, GM 12 bolt passenger car, GM 8.2″, 8.5″ and 8.6″, 1963-1979 Corvette and Nissan Titan
Compatible with Dura Grip positractions only

from

$209.99

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.

from

$57.99

Cross pin shaft for 7.5″, 7.625″, and 8″ GM.

Product Features:

Cross pin shaft for GM 7.5″, 7.625″ and 8.0″
Fits standard open differentials only

Popular 1985 Oldsmobile 442 Differentials Categories

Differential Oil

Differential Pinion Yokes

Rear Differential Cover Gaskets

Differential Covers

Differential Pinion Shaft Lock Bolts

Differential Bearings

Differential Axle Shafts

Differential Pinion Pilot Bearings

Differential Cover Bolts

Differential Carriers

Differential Bearing Kits

Front Differential Pinion Bearings

Differential Spider Gear Kits

Differential Rebuild Kits

Differential Carrier Shim Kits

Differential Pinion Seals

Differential Clutch Packs

Differential Mini Spools

Differential Ring and Pinions

Differential End Yokes

Rear Differential Pinion Bearings

Differential Spools

Differential Carrier Bearings

Differential Lock Springs

Differential Pinion Bearing Kits

Complete Differentials

Differential Drain Plugs

Differential Ring Gear Bolts

Bearing Race Drivers

Differential Pinion Shafts

Differential Crush Sleeves

Differential Side Bearing Spacers

Differential Pinion Shims

Differential Pinion Shaft Nuts

Differential Cross Pins

Differential Side Gear Thrust Washers

Differential Pinion Gear Thrust Washers

Differential Pinion Gear Washers

Differential Ring and Pinion Kits

Limited Slip Differential Assemblies

Differential Clutch Pack Clips

Maybe you’re in the middle of a full rebuild of that 1985 Oldsmobile 442. Maybe you just need a couple of Differentials. Either way, Advance Auto Parts has 231 different Differentials in our inventory ranging from $2.49 to $1,704.99. That means you can find the exact parts or products you need to keep that 1985 Oldsmobile 442 running smoothly.

Differentials are only as good as their brand. We stock 14 different brands to make sure you have plenty of trusted parts to choose from for your 1985 Oldsmobile 442. Valvoline, FELPRO, and Dorman 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 1985 Oldsmobile 442, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 338 reviews in this category, some of the top rated parts include Rear Differential Cover with 4.5 stars and Rear Differential Cover with 4.1 stars.

So if you’re in the market for aftermarket Differentials to keep your 1985 Oldsmobile 442 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 1985 Oldsmobile 442 Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1985 Oldsmobile 442 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 442 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 1985 Oldsmobile 442, our most popular Driveworks Differentials include:

from $7.79

(1)

Oil Seal

Differential Pinion Seals

Top 1985 Oldsmobile 442 Differentials from Felpro

Felpro products are another trusted brand when it comes to Differentials for your 1985 Oldsmobile 442. Popular Felpro parts include:

from $9.99

(195)

Differential Cover Gasket

Rear Differential Cover Gaskets

from $7.99

(45)

DIFFERENTIAL GASKET

Rear Differential Cover Gaskets

FAQs for 1985 Oldsmobile 442 Differentials

What are the most purchased Differentials for the 1985 Oldsmobile 442?

Out of 231 Differentials for the 1985 Oldsmobile 442, the most popular in our inventory are:

from $14.49

(2)

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

Differential Oil

from $57.99

This product is not rated

3 Qt – 80W90 Conventional Gear Oil With Posi Additive

Differential Oil

from $23.99

(7)

Bearings

Front Differential Pinion Bearings

What are the top-rated 1985 Oldsmobile 442 Differentials?

Top-rated Differentials for your 1985 Oldsmobile 442 based on customer reviews/ratings are:

from $20.99

(38)

Rear Differential Cover

“Looks great, face lift for the rear differential. Old one was rusted & in bad shape. Just remember to get the correct size.”

from $32.99

(14)

Rear Differential Cover

“Heavy steel with the original magnet. Fits like original.. Not a cheap stamping by any means”

from $5.99

(11)

Differential Shaft Lock Bolt

“great”

1985 Oldsmobile 442 Differentials

More 1985 Oldsmobile 442 Differentials

Essential 1985 Oldsmobile 442 Differentials

Yukon Gear – Pinion Nut (Part No.33152)

Richmond Gear – Differential Cross Shaft (Part No.CSPGM75)

USA Standard Gear – Master Overhaul Kit for the ’82-’99 GM 7.5" and 7.625" Differential (Part No.37049)

Yukon Gear – Ring Gear Bolt (Part No.33049)

Yukon Gear – Dura Grip Positraction For GM 7.5" & 7.625" With 26 Spline Axles, 3.23 & Up (Part No.26017)

Yukon Gear – 8.5" GM Extra HD Standard Open Case (Uses Larger Bearings) (Part No.20084)

Yukon Gear – Set Up Bearing (Part No.56043)

Yukon Gear – Pinion Nut Washer (Part No.33167)

Yukon Gear – Cross Pin Bolt (Part No.33067)

Yukon Gear – Cast Yoke For GM 8.5" With A 1350 U/Joint Size (Part No.41092)

Yukon Gear – The Carrier Bearing Puller (Part No.56034)

Yukon Gear – 7.5 & 7.625 Standard Open Pinion Gear Thrust Washer (Part No.33390)

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

Yukon Gear – 14 Plate Dura Grip Composite Clutches, GM 7.5 (Part No.16119)

USA Standard Gear – Spartan Locker For GM 8.5" With 30 Spline Axles, Includes Heavy-Duty Cross Pin Shaft (Part No.17041)

Yukon Gear – Redline Synthetic "Shock Proof" Oil – 3 Quarts (Part No.15000)

Yukon Gear – High Performance Ring & Pinion Gear Set For GM 7.5" In A 4.11 Ratio (Part No.24147)

FAG US – SHAFT SEAL (Part No.SS2588)

National – Bearings (Part No.M86610)

Yukon Gear – 1541H Alloy Rear Axle For GM 7.5" Passenger, Monte Carlo And El Camino (Part No.21288)

Motive Gear – Differential Carrier Shim Kit (Part No.1101)

Richmond Gear – Differential Mini Spool (Part No.78-1028-1)

Needa Parts – Standard Engine Oil Drain Plug: M20-1.50 Thread, 17 mm Head (Sold by each) (Part No.090-040)

Yukon Gear – 8.5" & 8.2" GM Carrier Installation Kit (Part No.57008)

Yukon Gear – 8.2" & 8.5" Rear Cover Gasket (Part No.23020)

Yukon Gear – Positraction Clutch Guide (Part No.33352)

USA Standard Gear – Standard Spider Gear Set For GM 8.5", 28 Spline (Part No.39026)

Yukon Gear – Cross Pin Shaft For 7.5", 7.625", And 8" GM (Part No.33404)

Popular 1985 Oldsmobile 442 Differentials Categories