1991 Pontiac Firebird Differentials

Name: Differential Pinion Shim Kit
Brand: Motive Gear
SKU: 1104
Price: 12.99 USD

Find your specific 1991 Pontiac Firebird original or aftermarket Differentials below. Order your parts online and have delivered to your home or pick up in-store at Advance Auto.

Essential 1991 Pontiac Firebird Differentials

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$12.99

Product Features:

KIT SHIM

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$208.99

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 GM 8.5″ rear with aftermarket positraction
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.

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$23.99

Pinion nut washer for GM 12 bolt car & truck, 55-62 GM car & truck, GM 8.2″ & 63-79 Corvette.

Product Features:

Pinion nut washer for GM 12 bolt car and truck, 1955-1964 GM car and truck, GM 8.2″ and 1963-1979 Corvette.

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$19.79

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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$11.99

7.5 GM cover gasket.

Product Features:

Cover gasket
Fits GM 7.5″ and 7.625″

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$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

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$14.99

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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$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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$4.29

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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$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

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$7.79

Value-priced seal meets all cataloged application requirements.

Product Features:

Brand may vary by location

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$39.49

RngPnnInstlKt

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$28.99

Positraction cross pin bolt for GM 12P and 12T.

Product Features:

Cross pin bolt for GM 12 bolt passenger car and truck
For OEM positraction applications only

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$257.99

Product Features:

GM 9BL 7.75″ R/P 3.70 MG

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$12.49

Valvoline High Performance Synthetic Gear Oil is the thermally stabile extreme pressure lubricant that offers outstanding protection for gearboxes and differentials in passenger cars, light trucks, and sport utility vehicles. Combined with high quality synthetic base oils, our formula’s superior additives help reliably safeguard against severe temperatures, shock loads, foaming, scuffing, scouring, corrosion and pitting in high load, high torque and high horsepower conditions. Can be used in conventional and limited slip hypoid differentials where GL-5 is specified as well as non-synchronized manual transmissions that require GL-4. Protect your gears with Valvoline, the #1 gear oil brand.

Product Features:

HIGH PERFORMANCE EXTREME-PRESSURE ADDITIVES HELP MINIMIZE WEAR in high pressure and high temperature conditions
EXCEPTIONAL HIGH AND LOW TEMPERATURE PROTECTION can easily handle both winter and summer conditions for dependable coverage and protection year-round
REDUCES CHATTERING AND PROTECTS GEAR TEETH from oxidation, rust, and wear
FIGHTS CORROSION AND RUST with emulsifying agents and safeguards against impurities, oxidation and thermal breakdown
SUPERIOR ADDITIVES help reliably safeguard against severe temperatures, shock loads, foaming, scuffing, scouring, corrosion and pitting in high load, high torque and high horsepower conditions

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$215.99

Bearing race driver. No return.

Product Features:

Bearing race driver
Fits HM88610 race
All steel construction

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$123.99

Product Features:

Fits GM 8.2″, 8.5″ and 8.6″
Steel

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$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

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$7.99

Differential Cover B

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$64.99

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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$14.99

Positraction pinion gear thrust washer with step-lip inside for GM 12P and 12T. fits new Eatons.

Product Features:

Pinion gear thust washer for GM 12 bolt passenger car and truck
Fits positraction designs only
Has inside lip

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$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

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$364.99

Yukon 1541H alloy rear axle for 8.5″ GM (not stock, for conversion) passenger with a length of 30-1/8″ inches (2.780″ hub) and 30 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:

30 spline
5 lug
30 1/8″ long
Fits GM 8.2″ and 8.5″ in passenger car

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$481.99

7.625″ GM standard Open case, 3.23 & up, Large & SM windows, loaded. 28 Spline.

Product Features:

Standard open carrier case and spiders
7.5″ & 7.625″ 28 spline applications
3.23 and up ratio only
Large and Small windows

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$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

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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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$259.99

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.

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$414.99

Yukon Performance 1-3/4″ deck steel spool for 8.5″ GM with 30 spline axles. Uses large bearings, 1.785 journals. Yukon performance spools are made from the highest quality materials to ensure high strength and long life in performance applications. Spools provide 100% power to both tires at all times and are a lower cost alternative to lockers. Spools are not recommended for street driven vehicles. Yukon Performance spools come with a one year warranty against manufacturing defects. This spool requires the use of a C-Clip eliminator kit to be used.

Product Features:

Fits GM 8.5″ with 30 spline axles
2.73 and up ratios only
Provides 100% traction to both wheels at all times
Not recommended for street driven vehicles

Popular 1991 Pontiac Firebird Differentials Categories

Differential Oil

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 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 Ring Gear Bolts

Bearing Race Drivers

Differential Pinion Shafts

Differential Crush Sleeves

Differential Side Bearing Spacers

Differential Pinion Shims

Differential Pinion Shaft Nuts

Differential Gear Install Kits

Differential Cross Pins

Differential Pinion Gear Thrust Washers

Differential Pinion Gear Washers

Differential Ring and Pinion Kits

Differential Spider and Pinion Gear Kits

Differential Clutch Pack Clips

Maybe you’re in the middle of a full rebuild of that 1991 Pontiac Firebird. Maybe you just need a couple of Differentials. Either way, Advance Auto Parts has 177 different Differentials in our inventory ranging from $1.99 to $1,839.99. That means you can find the exact parts or products you need to keep that 1991 Pontiac Firebird 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 1991 Pontiac Firebird. Valvoline, Yukon Gear, and FELPRO 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 1991 Pontiac Firebird, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 1,116 reviews in this category, some of the top rated parts include Differential Carrier Gear Kit with 4.8 stars and Wheel Bearing and Seal Kit with 5.0 stars.

So if you’re in the market for aftermarket Differentials to keep your 1991 Pontiac Firebird 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 1991 Pontiac Firebird Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1991 Pontiac Firebird 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 Firebird the best it can be. Be sure to browse some of our top Differentials brands and parts.

Popular Felpro Differentials

We carry Felpro parts in our stock across Rear Differential Cover Gaskets categories, plus more. For a 1991 Pontiac Firebird, our most popular Felpro Differentials include: