1991 Pontiac Firebird Differentials

Essential 1991 Pontiac Firebird Differentials

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

Differential Shaft Lock Bolt

from

$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
See More

Felpro – DIFFERENTIAL GASKET (Part No.RDS 55390)

DIFFERENTIAL GASKET

from

$8.79
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
See More

Yukon Gear – Positraction Internals For 7.5" And 7.625" GM With 28 Spline Axles (Part No.16117)

Positraction Internals For 7.5" And 7.625" GM With 28 Spline Axles

from

$279.99
Yukon positraction internals for 7.5″ and 7.625″ GM with 28 spline axles. Yukon uses higher quality materials and better techniques than OEM to ensure a longer lasting spider gear set. This kit does not include clutches. All components come with a one year warranty against manufacturing defects. This kit fits Yukon Dura Grip & Eaton positraction cases. It is not compatible with any other positractions.

Product Features:
  • Spider gear kit
  • Fits GM gm 7.5″ and 7.625″ with 28 spline Dura Grip positraction
  • Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers.
See More

Motive Gear – Differential Master Bearing Kit – Koyo (Part No.R12CRMK)

Differential Master Bearing Kit - Koyo

from

$105.99
Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

Product Features:
  • MSTR BRG KT – 12 BOLT CAR
See More

Motive Gear – Differential Ring and Pinion (Part No.GM10-411A)

Differential Ring and Pinion

from

$179.99


Product Features:
  • GM 10BL 8.5 R/P 4.11A MG FRT/REAR
See More

Powertrax – Lock Right Locker (Part No.2415-LR)

Lock Right Locker

from

$442.99
The Powertrax Lock-Right ultra-strength alloy locker’s straight-line performance is equal to a solid spool, but automatically unlocks in turns. Best suited for extreme off-road to severe on-road use, Powertrax Lock Right lockers replace the spider gears in your open differential carrier using basic tools and without affecting your ring and pinion settings. The whole job can be done in your driveway in a couple of hours, pin included! 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!
  • See More

    Yukon Gear – Replacement Carrier Shim Kit For Dana 60, 70, 70HD, 70U & 80 (Part No.55011)

    Replacement Carrier Shim Kit For Dana 60, 70, 70HD, 70U & 80

    from

    $13.99
    Product Features:
    • Carrier shim kit for Dana Spicer 60, 70, 70HD, 70U and 80
    See More

    Motive Gear – Differential Pinion Seal (Part No.8460N)

    Differential Pinion Seal

    from

    $8.29
    All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of our products undergo rigid quality control processes to insure proper fit, performance and longevity. Motive Gear products can be found in the winners circle at NHRA, IHRA, NMRA, NMCA, SODA, SCORE, BITD, Ultra-4 and NASCAR events because we offer unmatched selection and quality demanded by racers and their crew chiefs – the same quality and selection demanded by DIY customers and top mechanics. With four warehouses strategically located across North America, most Motive Gear orders arrive within 2-4 days. Win with Motive Gear!
    See More

    Motive Gear – Differential Mini Spool (Part No.MS7.5-28)

    Differential Mini Spool

    from

    $101.99


    Product Features:
    • MINI SPOOL GM 7 1/2″ 28 SPLINE
    See More

    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

    from

    $153.99
    Product Features:
    • Positraction spring kit
    • Fits GM 7.5″ and 7.625″ Dura Grip
    • Includes preload plates
    See More

    National – Shaft Repair Sleeve (Part No.99152)

    Shaft Repair Sleeve

    from

    $40.49
    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
    See More

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

    Redline Synthetic "Shock Proof" Oil With Positraction Additive - 4 Quarts

    from

    $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
    See More

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

    Master Overhaul Kit for the '82-'99 GM 7.5" and 7.625" Differential

    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.
    See More

    Motive Gear – Differential Pinion Nut (Part No.1260823)

    Differential Pinion Nut

    from

    $8.49
    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
    See More

    Yukon Gear – Pinion Nut Washer (Part No.33166)

    Pinion Nut Washer

    from

    $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.
    See More

    Yukon Gear – 8.5" & 8.6" GM Standard Open Pinion Gear Thrust Washer – Also Fits 8.5" Eaton With 0.795" Cross Pin (Part No.33385)

    8.5" & 8.6" GM Standard Open Pinion Gear Thrust Washer - Also Fits 8.5" Eaton With 0.795" Cross Pin

    from

    $10.99
    8.5″ & 8.6″ GM standard Open pinion gear Thrust washer. also fits 8.5″ Eaton with 0.795″ cross pin.

    Product Features:
    • Pinion gear thrust washer for GM 8.5″ and 8.6″
    • Fits standard open differentials only
    • 0.795″ I.D.
    See More

    Yukon Gear – Pinion Depth Shims For GM 8.25" IFS, 8.5", 12 Bolt Car, Ford 8.8" & Chrysler 8.25" (Part No.55009)

    Pinion Depth Shims For GM 8.25" IFS, 8.5", 12 Bolt Car, Ford 8.8" & Chrysler 8.25"

    from

    $27.99
    8.25″ IFS, 8.5″, 12P, 7.5″ F, 8.8″ F, 8.25″ Chrysler pinion shim kit.

    Product Features:
    • Pinion depth shims for GM 8.25″ IFS, 8.5″, 8.6″, 12 bolt passenger car, Ford 7.5″ and 8.8″, Chrysler 8.25″
    See More

    Motive Gear – Differential Gear Install Kit (Part No.GM8.2IK)

    Differential Gear Install Kit

    from

    $65.99


    Product Features:
    • MINI INSTALL KIT GM 10BLT 8.2
    See More

    Yukon Gear – 1541H Alloy Rear Axle For ’98-’02 GM 7.5" And 7.625" Camaro With Electronic Track Control (Part No.21624)

    1541H Alloy Rear Axle For '98-'02 GM 7.5" And 7.625" Camaro With Electronic Track Control

    from

    $271.99
    Yukon 1541H alloy rear axle for ’98-’02 GM 7.5″ and 7.625″ Camaro with electronic track control, with a length of 32 inches and 28 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 1998-2002 Camaro
    • 28 spline
    • 32″ long
    • Compatible with traction control applications only
    • Does not include ABS tone ring
    See More

    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"

    from

    $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
    See More

    Yukon Gear – Clutch Guide For GM 7.5" & 7.6" Dura Grip (Part No.33251)

    Clutch Guide For GM 7.5" & 7.6" Dura Grip

    from

    $10.99
    Product Features:
    • Clutch guide
    • Fits GM 7.5″ and 7.625″ Dura Grip
    See More

    Yukon Gear – Bearing Race Driver (Part No.56016)

    Bearing Race Driver

    from

    $188.99
    Bearing race driver. No return.

    Product Features:
    • Bearing race driver
    • Fits HM89210 race
    • All steel construction
    See More

    Pro-King – Differential Internal Nest Kit (Part No.741A717A)

    Differential Internal Nest Kit

    from

    $155.99
    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.
    See More

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

    Standard Spider Gear Set For GM 8.5", 28 Spline

    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.
    See More

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

    Differential Cross Shaft

    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.
    See More

    Yukon Gear – Posi Shim Kit For GM 7.5" & 7.625" Eaton Positraction (Part No.16047)

    Posi Shim Kit For GM 7.5" & 7.625" Eaton Positraction

    from

    $42.99
    Product Features:
    • Shim kit
    • Fits GM 7.5″ and 7.625″ with Eaton positraction
    See More

    Pro-King – Crush Sleeve (Part No.721A034)

    Crush Sleeve

    from

    $2.89
    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.
    See More

    Motive Gear – Differential Crush Sleeve (Part No.3954480)

    Differential Crush Sleeve

    from

    $5.49


    Product Features:
    • CRUSH SLEEVE 12 BLT CAR
    See More

    1991 Pontiac Firebird Differentials

    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 170 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 11 different brands to make sure you have plenty of trusted parts to choose from for your 1991 Pontiac Firebird. Driveworks, National, 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 1,611 reviews in this category, some of the top rated parts include Differential Carrier Gear Kit with 4.8 stars and Bearings with 4.5 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:
    DIFFERENTIAL GASKET
    from $7.99
    (45)
    DIFFERENTIAL GASKET
    Rear Differential Cover Gaskets

    Top 1991 Pontiac Firebird Differentials from Dorman

    Dorman products are another trusted brand when it comes to Differentials for your 1991 Pontiac Firebird. Popular Dorman parts include:
    Rear Differential Cover
    from $20.99
    (38)
    Rear Differential Cover
    Differential Covers
    Differential Shaft Lock Bolt
    from $5.99
    (11)
    Differential Shaft Lock Bolt
    Differential Pinion Shaft Lock Bolts

    FAQs for 1991 Pontiac Firebird Differentials

    What are the most purchased Differentials for the 1991 Pontiac Firebird?

    Out of 170 Differentials for the 1991 Pontiac Firebird, the most popular in our inventory are:
    Taper Bearing Set
    from $10.29
    (38)
    Taper Bearing Set
    Differential Bearings
    Bearings
    from $16.99
    (25)
    Bearings
    Differential Bearings
    3 Qt - Penzoil 80W90 Conventional Gear Oil
    from $44.99
    This product is not rated
    3 Qt – Penzoil 80W90 Conventional Gear Oil
    Differential Oil

    What are the top-rated 1991 Pontiac Firebird Differentials?

    Top-rated Differentials for your 1991 Pontiac Firebird based on customer reviews/ratings are:
    Differential Carrier Gear Kit
    from $159.99
    (6)
    Differential Carrier Gear Kit
    “perfick fit for 01 blazer !!!!”
    Bearings
    from $6.99
    (6)
    Bearings
    “perfect fit”
    Bearings
    from $18.79
    (3)
    Bearings
    “as advertised”