1985 Oldsmobile Cutlass Supreme Differentials

Essential 1985 Oldsmobile Cutlass Supreme Differentials

USA Standard Gear – Ring & Pinion Gear Set For GM 8.5" In A 3.42 Ratio (Part No.36213)

Ring & Pinion Gear Set For GM 8.5" In A 3.42 Ratio

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$287.99
USA Standard ring & pinion sets are the right choice to add confidence to your install. USA Standard Gear offers a full line of ring & pinion sets for a variety of common & hard to find applications. USA standard gear offers a standard one year warranty against defects on their ring & pinion sets.

Product Features:
  • Fits GM 8.5″ and 8.6″
  • 8.50″ ring gear diameter
  • 30 spline pinion
  • 10 ring gear bolts
  • 3.42 ratio
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Yukon Gear – Pinion Install Kit For GM 7.5" Differential (Part No.13064)

Pinion Install Kit For GM 7.5" Differential

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$203.99
Yukon Pinion installation kits are a terrific solution for gear installation on lower mileage vehicles where the carrier bearings & races can be reused. This kit uses Timken bearings and races along with a high quality pinion seal and small parts. Included in this kit are the pinion bearings and races, pilot bearing (if applicable), crush sleeve (if applicable), complete pinion shim kit, pinion nut, thread locker, and marking compound with brush. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your pinion gear.

Product Features:
  • Fits 1982-1999 GM 7.5″ and 7.625″
  • Included are pinion bearings and races, pinion seal, crush sleeve , complete pinion shim kit, and marking compound with brush.
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USA Standard Gear – Spartan Locker For GM 8.5" With 30 Spline Axles, Includes Heavy-Duty Cross Pin Shaft (Part No.17041)

Spartan Locker For GM 8.5" With 30 Spline Axles, Includes Heavy-Duty Cross Pin Shaft

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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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Yukon Gear – Crush Sleeve (Part No.33110)

Crush Sleeve

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$5.99
Crush sleeve for GM 7.5″, 7.6″, 7.6″ IFS, 8.0″, 8.2″ & 8.2″ Buick/Olds/Pontiac. .625″ long.

Product Features:
  • Crush sleeve for GM 7.5″, 7.625″, 7.6″ IFS, 8.2″ and 8.2″ Buick, Oldsmobile and Pontiac
  • 0.625″ tall
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Pro-King – Differential Cross Shaft (Part No.742G930)

Differential Cross Shaft

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$2.79
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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Yukon Gear – Bearing Install Kit For GM 8.5" Differential (Part No.11067)

Bearing Install Kit For GM 8.5" Differential

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$221.99
Yukon Bearing installation kits are perfect for shops & 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. kit includes carrier bearings and races, pinion bearings and races, pinion seal, crush sleeve (if applicable), oil baffles and slingers (if applicable), marking compound and brush. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your ring & pinion 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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Felpro – Differential Cover Gasket (Part No.RDS 55028-1)

Differential Cover Gasket

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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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USA Standard Gear – 8.5" GM Spartan Locker Cross Pin (Part No.17024)

8.5" GM Spartan Locker Cross Pin

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$49.99
Product Features:
  • USA Standard Gear heavy-duty cross pin shaft
  • Fits GM 8.5″ and 8.6″
  • Works with Spartan Locker or standard open spider gears
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Yukon Gear – 1541H Alloy Rear Axle For GM 7.5" Passenger, Monte Carlo And El Camino (Part No.21288)

1541H Alloy Rear Axle For GM 7.5" Passenger, Monte Carlo And El Camino

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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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Yukon Gear – Standard Open Side Gear Thrust Washer For 8.5" GM (Part No.33304)

Standard Open Side Gear Thrust Washer For 8.5" GM

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$15.99
Standard open side gear thrust washer for 8.5″ GM.

Product Features:
  • Side gear thrust washer
  • Fits GM 8.5″
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Yukon Gear – Carrier Installation Kit For GM 8.5" Differential With HD Bearings (Part No.57009)

Carrier Installation Kit For GM 8.5" Differential With HD Bearings

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$148.99
Yukon Carrier installation kits are great, low cost kit for carrier changes such as Positraction or locker upgrades. Carrier installation kit for GM 8.5″ differential with HD bearings for large journal carrier. This kit contains carrier bearings, races and shims. This kit is used in 8.5″ differentials using a Yukon Dura Grip, Eaton posi, ValueTrac, True Trac, Pro-Series Auburn, Detroit Locker or standard carrier with large bearing journals.

Product Features:
  • Fits GM 8.5″ with aftermarket positraction
  • Works with Heavy Duty Bearings
  • Includes carrier bearings and races and “super” carrier shim kit
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Driveworks – Taper Bearing Set (Part No.S-A-6)

Taper Bearing Set

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$10.29
Value-priced bearing meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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Yukon Gear – Yoke For 8.5" Or 8.6" GM (Mech 3R) With A U/Joint Size And Triple Lip Design (Part No.41071)

Yoke For 8.5" Or 8.6" GM (Mech 3R) With A U/Joint Size And Triple Lip Design

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$226.99
Yukon yoke for 8.5″ or 8.6″ GM (mech 3R) with a U/joint size and triple lip design. 2.556″ snap ring span, 1.125″ cap diameter. Inside snap ring. This yoke uses inside snap rings. All Yukon yokes come with a one year warranty against manufacturing defects.

Product Features:
  • Fits GM 8.5″ and 8.6″
  • 30 spline
  • Mechanics 3R u-joint size
  • 2.556″ snap ring span
  • 1.125″ cap diameter
  • Inside snap ring design
  • Strap style
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Pro-King – Differential Carrier Cover (Part No.741A758)

Differential Carrier Cover

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$29.99
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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Yukon Gear – Differential Cover B (Part No.33572)

Differential Cover B

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$7.99
Differential Cover B

Yukon Gear – Standard Open Carrier Case, GM 7.625", 3.23 & Up (Part No.20089)

Standard Open Carrier Case, GM 7.625", 3.23 & Up

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$349.99
Product Features:
  • Standard open carrier case
  • Fits GM 7.625″
  • 3.23 and up ratio only
  • Does not include spider gears
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Yukon Gear – 14 Plate Duragrip Composite Clutches For GM 8.2", GM 8.5", 12T, 12P, Ford 8.8" & Cast Iron ‘Vette (Part No.16064)

14 Plate Duragrip Composite Clutches For GM 8.2", GM 8.5", 12T, 12P, Ford 8.8" & Cast Iron 'Vette

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$373.99
Product Features:
  • Clutch kit
  • Fits Ford 8.8″, 1963-1979 Corvette, GM 12 bolt passenger car and truck, 8.2″, 8.5″ and 8.6″ Dura Grip positraction
  • 14 piece kit
  • Composite clutches
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Motive Gear – Differential Pinion Seal (Part No.8610)

Differential Pinion Seal

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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 o
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Yukon Gear – Bearing Race Driver (Part No.56020)

Bearing Race Driver

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$215.99
Bearing race driver. No return.

Product Features:
  • Bearing race driver
  • Fits M802011 race
  • All steel construction
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Motive Gear – Differential Mini Spool (Part No.MS7.5-28)

Differential Mini Spool

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$101.99


Product Features:
  • MINI SPOOL GM 7 1/2″ 28 SPLINE
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Yukon Gear – Dura Grip Positraction For GM 8.5" With 28 Spline Axles (Part No.26015)

Dura Grip Positraction For GM 8.5" With 28 Spline Axles

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$859.99
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. This unit has larger bearing journals for added strength & uses heavy-duty carrier bearings & races.

Product Features:
  • Fits GM 8.5″ with 28 spline axles
  • 2.73 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
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Pro-King – Differential Ring Gear Bolt (Part No.742G935)

Differential Ring Gear Bolt

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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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Yukon Gear – Adapter Sleeve Fro GM 7.2", 7.625" & 8.0" Yokes To Use Triple Lip Pinion Seal (Part No.41210)

Adapter Sleeve Fro GM 7.2", 7.625" & 8.0" Yokes To Use Triple Lip Pinion Seal

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$25.99
Yukon 4340 Chrome-Moly replacement outer stub for D44 ’87-’94 Wrangler with a length of 8.31″ and 27 splines. Yukon 4340 Chrome-Moly axles provide up to 50% increased strength over stock axles for use in extreme performance applications with large tires and high horsepower. Yukon’s 4340 axles are manufactured using the latest technologies and the highest quality materials to ensure high strength and long life. Limited Lifetime warranty covers manufacturing defects and axle breakage for as long as you own the vehicle. This warranty is not transferable to another party. “No Questions Asked” replacement for first warranty return, however Yukon reserves the right to either replace axle or refund original purchase price after the first warranty claim. Yukon (through Randy’s ring & pinion) makes final determination on warranty considerations.

Product Features:
  • 27 spline
  • 8.31″ long
  • Fits Dana Spicer 30 in 1987-1994 Wrangler
  • Outer stub
  • 5-760X U-joint size
  • 4340 Chromoly
  • For WARN hub conversion only
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Yukon Gear – Super Carrier Shim Kit For Ford 7.5", GM 7.5", 8.2" & 8.5" (Part No.55001)

Super Carrier Shim Kit For Ford 7.5", GM 7.5", 8.2" & 8.5"

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$59.99
Product Features:
  • Super carrier shim kit for Ford 7.5″, GM 7.5″, 7.625″, 7.6″ IFS, 7.6″ IRS, 7.75″, 8.2″, 8.2″ Buick, Oldsmobile and Pontiac and GM 8.5″ front and rear
  • Interlocking design makes installation much easier
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Motive Gear – Differential Carrier Shim Kit (Part No.1101)

Differential Carrier Shim Kit

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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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Yukon Gear – Posi Spring Kit For GM 7.5", With Preload Plates (Part No.33206)

Posi Spring Kit For GM 7.5", With Preload Plates

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$153.99
Product Features:
  • Positraction spring kit
  • Fits GM 7.5″ and 7.625″ Dura Grip
  • Includes preload plates
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National – Bearings (Part No.M804049)

Bearings

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$38.49
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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Richmond Gear – Differential Cross Shaft (Part No.CSPGM12)

Differential Cross Shaft

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$27.49
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.
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1985 Oldsmobile Cutlass Supreme Differentials

Maybe you’re in the middle of a full rebuild of that 1985 Oldsmobile Cutlass Supreme. Maybe you just need a couple of Differentials. Either way, Advance Auto Parts has 234 different Differentials in our inventory ranging from $2.49 to $1,153.99. That means you can find the exact parts or products you need to keep that 1985 Oldsmobile Cutlass Supreme running smoothly.

Differentials are only as good as their brand. We stock 12 different brands to make sure you have plenty of trusted parts to choose from for your 1985 Oldsmobile Cutlass Supreme. Valvoline, Felpro, and Driveworks 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 Cutlass Supreme, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 4,383 reviews in this category, some of the top rated parts include Rear Differential Cover with 4.5 stars and Bearings with 4.8 stars.

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

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1985 Oldsmobile Cutlass Supreme 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 Cutlass Supreme the best it can be. Be sure to browse some of our top Differentials brands and parts.

FAQs for 1985 Oldsmobile Cutlass Supreme Differentials

What are the most purchased Differentials for the 1985 Oldsmobile Cutlass Supreme?

Out of 234 Differentials for the 1985 Oldsmobile Cutlass Supreme, the most popular in our inventory are:
Differential Cover Gasket
from $9.99
(195)
Differential Cover Gasket
Rear Housing Cover Gaskets
Taper Bearing Set
from $10.29
(38)
Taper Bearing Set
Differential Bearings
DIFFERENTIAL GASKET
from $7.99
(45)
DIFFERENTIAL GASKET
Rear Differential Cover Gaskets

What are the top-rated 1985 Oldsmobile Cutlass Supreme Differentials?

Top-rated Differentials for your 1985 Oldsmobile Cutlass Supreme based on customer reviews/ratings are:
Rear Differential Cover
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.”
Bearings
from $16.99
(25)
Bearings
“Fit like it should no issues”
Differential Ring And Pinion
from $342.99
(23)
Differential Ring And Pinion
“So far so good.”