1990 Pontiac Firebird Differentials & Components

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    • (0 reviews)
      # 531093494
      Pontiac Firebird with 7.5" Ring Gear / with 7.6" Ring Gear with 26 Spline Axle Shaft 1990, Rear Differential Ring and Pinion by Dorman®. The gears of Dorman’s Differential Ring and Pinion are engineered to effectively transfer torque...
      Replacement eliminates driveline grinding and whining soundsDirect replacement for a proper fit
      $115.48 - $198.95
    • (0 reviews)
      # 111380658
      Pontiac Firebird with GM 7.5" Series Axle / with GM 7.6" Series Axle with 28 Spline 1990, Rear Ring and Pinion Gear Set by USA Standard Gear®. USA Standard ring and pinion sets are the right choice to add confidence to your install. USA...
      Direct-fit OE-quality replacement for your factory partHelps restore the proper functionality of your vehicle
      $206.81 - $249.58
    • (0 reviews)
      # mpn2017975
      Pontiac Firebird with 7.5" Ring Gear 1990, Rear Axle Differential Bearing and Seal Kit by Timken®. Seal ID: 1.5". Get optimum vehicle performance with Timken bearings. Timken manufactures ball bearings, cylindrical roller bearings, and...
      Designed to effectively reduce frictionUltimate load handling capability
      $66.74
    • (0 reviews)
      # mpn2412740
      Pontiac Firebird with 7.5" Ring Gear 1990, Rear Differential Bearing Kit by Dorman®. Dorman’s Differential Bearing Kit allows you to keep all the necessary components for installation of the Differential Ring and Pinion readily on...
      Replacement eliminates driveline grinding and whining soundsRobust steel construction ensures durability for years of service
      $110.95
    • (0 reviews)
      # mpn739976595
      Pontiac Firebird Trans Am with GM 7.5" Series Axle / with GM 7.6" Series Axle with 28 Spline 1990, Rear Differential Bearing Kit by USA Standard Gear®. This kit uses Koyo bearings and races along with all high quality small parts. USA...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $108.51
    • (0 reviews)
      # mpn739977015
      Pontiac Firebird Trans Am with GM 7.5" Series Axle / with GM 7.6" Series Axle with 28 Spline 1990, Rear Master Overhaul Bearing Kit by USA Standard Gear®. USA Standard Master Overhaul kits let you finish your install with confidence....
      Uses Koyo bearings and racesExpertly crafted from premium materials
      $134.71
    • (0 reviews)
      # mpn739977047
      Pontiac Firebird Trans Am with GM 7.5" Series Axle / with GM 7.6" Series Axle with 28 Spline 1990, Rear Pinion Installation Kit by USA Standard Gear®. USA Standard ring and pinion sets are the right choice to add confidence to your...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $84.56
    • (0 reviews)
      # mpn739976896
      Pontiac Firebird Trans Am with GM 7.5" Series Axle / with GM 7.6" Series Axle with 28 Spline 1990, Rear Spider Gear Set by USA Standard Gear®. USA Standard gear sets are the right choice to add confidence to your install. USA Standard...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $93.07
    • (0 reviews)
      # 531199994
      Pontiac Firebird 1990, Rear Axle Differential Bearing by National®. Cone Length: 0.780". This bearing is manufactured from high quality steel and constructed utilizing state-of-the-art computer controlled heat treatment technology to...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $7.81 - $7.99
    • (0 reviews)
      # mpn1579934573
      Pontiac Firebird With GM 7.6" Axle 1990, Differential Gear Kit by American Axle®. AAM kits are packaged with the replacement parts industry in mind. Each differential gear kit contains authentic side and pinion gears that were included...
      Dependable solution for driveline and drivetrain systemsHighly engineered for top quality and operational excellence
      $109.82
    • (0 reviews)
      # mpn358588620
      Pontiac Firebird GM 7.5" Axle 1990, Basic Series Differential Kit by Ratech®. Made in USA. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $19.82
    • (0 reviews)
      # mpn358588430
      Pontiac Firebird GM 7.5" Axle 1990, Differential Installation Kit by Ratech®. Made in USA. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $48.13
    • (0 reviews)
      # 531102928
      Pontiac Firebird 1990, Rear Differential Bearing by Timken®. Get optimum vehicle performance with Timken bearings. Timken manufactures ball bearings, cylindrical roller bearings, and tapered roller bearings, and all feature premium...
      Designed to effectively reduce frictionUltimate load handling capability
      $6.86 - $17.55
    • (0 reviews)
      # mpn2040421
      Pontiac Firebird with 7.75" Ring Gear 1990, Rear Differential Bearing Set by Timken®. Get optimum vehicle performance with Timken bearings. Timken manufactures ball bearings, cylindrical roller bearings, and tapered roller bearings, and...
      Designed to effectively reduce frictionUltimate load handling capability
      $9.58
    • (0 reviews)
      # 531105473
      Pontiac Firebird 1990, Rear Differential Pinion Bearing by Timken®. Get optimum vehicle performance with Timken bearings. Timken manufactures ball bearings, cylindrical roller bearings, and tapered roller bearings, and all feature...
      Designed to effectively reduce frictionUltimate load handling capability
      $7.58 - $15.34
    • (0 reviews)
      # 531055708
      Pontiac Firebird 1990, Rear Differential Pinion Race by Timken®. Precision manufactured using premium materials and made by the company that is trusted by many carmakers, the Timken race is the right choice if you opt for a highly...
      OE quality fit, performance, and reliabilityCost-effective friction management solution
      $3.63 - $7.80
    • (0 reviews)
      # 531096612
      Pontiac Firebird 1990, Rear Differential Pinion Seal by Timken®. Timken offers the right seal to keep your vehicle running optimally. Timken seals provide ultimate protection from contaminants and help retain lubricants and liquids,...
      Machined rubber sealing edge provides greater accuracy and consistency and a better sealing surfaceAn extra dust lip helps keep harmful contaminants out and protects against rust and corrosion
      $8.26 - $14.81
    • (0 reviews)
      # 531069112
      Pontiac Firebird 1990, Rear Differential Race by Timken®. Precision manufactured using premium materials and made by the company that is trusted by many carmakers, the Timken race is the right choice if you opt for a highly durable part...
      OE quality fit, performance, and reliabilityCost-effective friction management solution
      $4.24 - $7.22
    • (0 reviews)
      # mpn2377090
      Pontiac Firebird with 7.5" Ring Gear / with 7.625" Ring Gear 1990, Differential Crush Sleeve by Dorman®. A necessary item to replace when servicing the differential, Dorman’s Differential Crush Sleeve is durably built to retain...
      Direct replacement for a proper fit every timeDesigned specifically for rear-wheel drive vehicles
      $2.59
    • (0 reviews)
      # mpn2377088
      Pontiac Firebird with 7.62" Ring Gear 1990, Rear Differential Pinion Shaft Lock Bolt by Dorman®. Engineered from high-quality metal, Dorman’s Differential Pinion Shaft Lock Bolt effectively retains the pinion shaft to the rear...
      Replacement restores drivabilityDirect replacement for a proper fit
      $1.60
    • (0 reviews)
      # mpn864657673
      Pontiac Firebird with Saginaw 7.625" Series Axle 1990, GM Original Equipment™ Differential Magnet by ACDelco®. Don’t be “indifferent” toward your differential. It plays a vital role in moving your vehicle and ensuring a smooth...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $5.90
    • (0 reviews)
      # mpn2660238291
      Pontiac Firebird 1990, GM Original Equipment™ Rear Differential Bearing by ACDelco®. Size: 41.28mm ID x 73.42mm OD x 21.43mm Thick. Includes: With Cup and Cone (With Timken LM501349-LM501314). Don’t be “indifferent” toward your...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $29.48
    • (0 reviews)
      # 531174085
      Pontiac Firebird with Saginaw 7.625" Series Axle 1990, GM Original Equipment™ Rear Differential Pinion Bearing by ACDelco®. Includes: With Cup and Cone. Don’t be “indifferent” toward your differential. It plays a vital role in...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $29.67 - $43.74
    • (0 reviews)
      # 531138135
      Pontiac Firebird 1990, Rear Axle Differential Bearing Race by National®. Cup Bore: 2.89". This part is manufactured by one of the most trusted names in the automotive industry to keep your vehicle perform optimally. It is built to the...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $4.10 - $4.28
    • (0 reviews)
      # 531178160
      Pontiac Firebird 1990, Rear Differential Pinion Bearing by National®. This bearing is manufactured from high quality steel and constructed utilizing state-of-the-art computer controlled heat treatment technology to ensure ultimate...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $7.28 - $18.76
    • (0 reviews)
      # 531173490
      Pontiac Firebird 1990, Rear Differential Pinion Race by National®. This part is manufactured by one of the most trusted names in the automotive industry to keep your vehicle perform optimally. It is built to the original equipment...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $3.67 - $8.32
    • (0 reviews)
      # mpn1290815
      Pontiac Firebird with 7.625" Ring Gear with GMC Transmission 1990, Rear Outer Differential Pinion Repair Sleeve by National®. Outer Diameter: 1.859". Width: 0.438". This part is manufactured by one of the most trusted names in the...
      National Redi-Sleeves are precision stainless steel wear sleeves designed to quickly repair damaged, grooved or worn shaftsStrong, durable stainless steel construction provides a corrosion-free sealing surface that surpasses most original shaft specifications
      $19.45
    • (0 reviews)
      # 531137247
      Pontiac Firebird 1990, Rear Outer Differential Pinion Seal by National®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product...
      Designed to increase wheel-end reliability by effectively excluding dirt, moisture, and other contaminantsA patent-pending National Dynamic Edge technology allows for maximum protection
      $9.70 - $16.28
    • (0 reviews)
      # mpn358588599
      Pontiac Firebird GM 7.5" Axle 1990, Crush Sleeve by Ratech®. Made in USA. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for your ultimate...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $5.36
    • (0 reviews)
      # mpn358588671
      Pontiac Firebird GM 7.5" Axle 1990, Differential Carrier Bearing Set by Ratech®. Made in USA. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $28.41
    • (0 reviews)
      # mpn358588466
      Pontiac Firebird GM 7.5" Axle 1990, Differential Pinion Nut by Ratech®. Made in USA. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for your...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $3.66
    • (0 reviews)
      # mpn358588439
      Pontiac Firebird GM 7.5" Axle 1990, Pinion Shim Set by Ratech®. Made in USA. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for your...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $13.24
    • (0 reviews)
      # mpn358588458
      Pontiac Firebird GM 7.5" Axle 1990, Ring Gear Bolt Set by Ratech®. Made in USA. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for your...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $19.10
    • (0 reviews)
      # mpn358588434
      Pontiac Firebird GM 7.5" Axle 1990, Smart Sleeve Crush Sleeve by Ratech®. Made in USA. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $13.45
    • (0 reviews)
      # mpn358588627
      Pontiac Firebird GM 7.5" Axle 1990, Solid Spacer with Shim Pack by Ratech®. Made in USA. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $16.38
    • (0 reviews)
      # 503295438
      Pontiac Firebird with 3.23 and Up Gear Ratio with 10 Bolt 1990, Differential Carrier by Motive Gear®. Without Internal Kit. Carrier Type: Open. All Motive Gear products are engineered for their specific application and manufactured in...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $102.88 - $123.45
    • (0 reviews)
      # 503557560
      Pontiac Firebird with GM 7.5" Series Axle with 10 Bolt 1990, Rear Performance Ring and Pinion Gear Set by Motive Gear®. Motive Gear Performance ring and pinions are perfect for dedicated racing or off-road vehicle. Gear sets are made...
      Central contact patternCNC start to finish
      $221.11 - $259.17
    • (0 reviews)
      # mpn2151980576
      Pontiac Firebird with GM 7.5" Series Axle with 3.23 and Up Gear Ratio with 10 Bolt 1990, Rear Pro Gear Ring and Pinion Gear Set by Motive Gear®. Motive Gear Pro Gear ring and pinions are perfect for dedicated racing or off-road vehicle....
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $448.50
    • (0 reviews)
      # 503366489
      Pontiac Firebird 1990, Rear Ring and Pinion Gear Set by Motive Gear®. Motive Gear stock performance ring and pinions are excellent replacements for OE. Experienced installers prefer ring and pinions for easy setup, superior strength,...
      Quiet operationComputer controlled heat treatment
      $210.05 - $250.63
    • (0 reviews)
      # 503472004
      Pontiac Firebird E / T Engine VIN Character with 28 Spline with GM 7.5" Series Axle / with GM 7.625" Series Axle with 10 Bolt 1990, HP™ Rear Differential by Auburn Gear®. Type: Limited Slip. High Performance. Auburn Gear’s flagship...
      Expertly crafted from superior materialsProvides exceptional reliability
      $416.16
    • (0 reviews)
      # 503410207
      Pontiac Firebird E / T Engine VIN Character with 28 Spline with GM 7.5" Series Axle / with GM 7.625" Series Axle with 10 Bolt 1990, Pro™ Rear Differential by Auburn Gear®. Type: Limited Slip. Turns your torque up another notch,...
      Expertly crafted from superior materialsProvides exceptional reliability
      $474.91
    • (0 reviews)
      # mpn2500668630
      Pontiac Firebird E / T Engine VIN Character with 28 Spline with GM 7.5" Series Axle / with GM 7.625" Series Axle with 3.23 and Up Gear Ratio with 10 Bolt 1990, Road Race™ Rear Differential by Auburn Gear®. Type: Limited Slip. Auburn...
      Expertly crafted from superior materialsProvides exceptional reliability
      $483.48
    • (0 reviews)
      # mpn2232296028
      Pontiac Firebird with 1.20" Axle Shaft Diameter with GM 7.5" Series Axle / with GM 7.625" Series Axle with 3.23 and Up Gear Ratio with 10 Bolt 1990, Detroit Locker® Rear Differential by Eaton®. The Detroit Locker is a 100%-automatic...
      100% automatic locking - no driver action neededProvides maximum amount of traction to both wheel ends
      $700.34
    • (0 reviews)
      # mpn2232296002
      Pontiac Firebird with 1.20" Axle Shaft Diameter with GM 7.5" Series Axle / with GM 7.625" Series Axle with 3.23 and Up Gear Ratio with 10 Bolt 1990, Detroit Truetrac® Rear Differential by Eaton®. The Detroit Truetrac is a helical-gear...
      Helical-style pinion gearsLimited-slip operation
      $478.73
    • (0 reviews)
      # mpn1579910698
      Pontiac Firebird with 1.20" Axle Shaft Diameter with GM 7.625" Series Axle with 3.23 and Up Gear Ratio with 10 Bolt 1990, Posi™ Rear Differential by Eaton®. The Eaton Posi limited-slip differential prevents wheel slip before it can...
      Superior rebuildable designRace-bred carbon friction discs
      $499.99
    • (0 reviews)
      # mpn2530909960
      Pontiac Firebird with 28 Spline with GM 7.625" Series Axle with 3.23 and Up Gear Ratio 1990, Grip LS Traction System by Powertrax®. Type: Open. The Powertrax Grip LS, is a clutch-type differential in a forged steel case. This...
      Comes Fully AssembledCarbon Fiber and Steel Friction Plate Technology
      $457.67
    • (0 reviews)
      # 503552051
      Pontiac Firebird with Open Differential 1990, Lock Right Locker by Powertrax®. Powertrax Lock-Right performance lockers’ straight-line performance is equal to a solid spool axle, yet they automatically unlock during turns. When...
      Brute Force Devices For Rugged ApplicationsReplacement Of Differential Case Not Required
      $405.19 - $406.60
    • (0 reviews)
      # 503642451
      Pontiac Firebird with Open Differential 1990, No-Slip Traction System by Powertrax®. For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It...
      Extreme Traction PerformanceEnables a 2 Wheel Drive to outperform a 4 Wheel Drive in poor traction conditions
      $418.28 - $475.75
    • (0 reviews)
      # 503492086
      Pontiac Firebird with GM 7.5" Series Axle with 10 Bolt 1990, Rear Street Gear Ring and Pinion Gear Set by Richmond®. Richmond Gear ring and pinions are perfect for any vehicle where performance and durability matters. Made from...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $232.75 - $279.10
    • (0 reviews)
      # mpn730872341
      Pontiac Firebird Trans Am with 28 Spline GM 7.6" Series Axle / with GM 7.5" with 3.23 and Up Gear Ratio 1990, Rear Dura Grip Carrier Case by Yukon Gear & Axle®. Without Spider Gears. Dominate the track or hit the trails with confidence...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $240.53
    • (0 reviews)
      # mpn730872339
      Pontiac Firebird Trans Am with 28 Spline GM 7.6" Series Axle / with GM 7.5" with 3.23 and Up Gear Ratio 1990, Rear Dura Grip Positraction by Yukon Gear & Axle®. The Yukon Dura Grip an example of the popular clutch plate limited slips...
      Provides aggressive yet smooth traction to give you the confidence and performance you needFully rebuildable 4 spring design with composite clutches
      $495.67
    • (0 reviews)
      # 503428249
      Pontiac Firebird 1990, Rear High Performance Ring and Pinion Gear Set by Yukon Gear & Axle®. Yukon Ring and Pinion sets give you the confidence of knowing you’re running gears designed for the harshest of conditions. Whether it’s on...
      Smooth finishEasy Set-Up
      $249.99 - $396.48
    • (0 reviews)
      # 503510094
      Pontiac Firebird Trans Am with 28 Spline GM 7.6" Series Axle / with GM 7.5" with 3.23 and Up Gear Ratio 1990, Rear Standard Open Carrier Case by Yukon Gear & Axle®. Dominate the track or hit the trails with confidence by fine tuning...
      Enables you to keep your engine in the powerband for more giddy-up and high speedAllows for getting superior traction on just about any brutal terrain
      $209.22 - $298.40
    • (0 reviews)
      # 126495077
      Pontiac Firebird 1990, Differential Gear Installation Kit by Motive Gear®. All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of company products undergo rigid...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $51.56 - $69.50
    • (0 reviews)
      # 503424042
      Pontiac Firebird 1990, Rear Differential Bearing Kit by Motive Gear®. All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of company products undergo rigid quality...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $74.28 - $137.70
    • (0 reviews)
      # mpn358496476
      Pontiac Firebird with 26 Spline with GM 7.5" Series Axle with 10 Bolt 1990, Rear Differential Carrier Gear Kit by Motive Gear®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $108.20
    • (0 reviews)
      # 126495080
      Pontiac Firebird 1990, Rear Differential Master Bearing Kit by Motive Gear®. All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of company products undergo rigid...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $89.63 - $143.93
    • (0 reviews)
      # 503675573
      Pontiac Firebird with GM 7.5" Series Axle with 10 Bolt 1990, Rear Differential Super Bearing Kit by Motive Gear®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $118.93 - $129.62
    • (0 reviews)
      # 503687062
      Pontiac Firebird with Open Differential with 7.5" Series Axle with 10 Bolt 1990, Rear Mini Spool by Motive Gear®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $80.99 - $81.49
    • (0 reviews)
      # mpn2741036493
      Pontiac Firebird with 7.5" Series Axle with 10 Bolt 1990, Differential Gear Installation Kit by Richmond®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $30.28




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