1978 Oldsmobile Cutlass Differentials & Components

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    • (0 reviews)
      # 111378097
      Oldsmobile Cutlass with 7.5" Ring Gear with General Motors Series Axle 1978, 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 Standard...
      Direct-fit OE-quality replacement for your factory partHelps restore the proper functionality of your vehicle
      $217.81 - $262.84
    • (0 reviews)
      # 531092171
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme with 7.5" Ring Gear 1978, Rear Differential Ring and Pinion by Dorman®. The gears of Dorman’s Differential Ring and Pinion are engineered to effectively transfer torque from the...
      Replacement eliminates driveline grinding and whining soundsDirect replacement for a proper fit
      $115.44 - $168.95
    • (0 reviews)
      # mpn739977011
      Oldsmobile Cutlass with 7.5" Ring Gear with General Motors Series Axle 1978, Rear Master Overhaul Bearing Kit by USA Standard Gear®. USA Standard Master Overhaul kits let you finish your install with confidence. This kit uses Koyo...
      Uses Koyo bearings and racesExpertly crafted from premium materials
      $122.95
    • (0 reviews)
      # 531151160
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme with 8.5" Ring Gear 1978, Rear Axle Differential Bearing and Seal Kit by Timken®. Get optimum vehicle performance with Timken bearings. Timken manufactures ball bearings, cylindrical...
      Designed to effectively reduce frictionUltimate load handling capability
      $63.91 - $106.01
    • (0 reviews)
      # mpn2412740
      Oldsmobile Cutlass with 7.5" Ring Gear 1978, 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
      $116.95
    • (0 reviews)
      # mpn739976894
      Oldsmobile Cutlass with 7.5" Ring Gear with General Motors Series Axle with 26 Spline 1978, Rear Spider Gear Set by USA Standard Gear®. USA Standard gear sets are the right choice to add confidence to your install. USA Standard Gear...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $102.61
    • (0 reviews)
      # 212842980
      Oldsmobile Cutlass with 7.5" Ring Gear with General Motors Series Axle 1978, Basic Series Differential Kit by Ratech®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $15.44
    • (0 reviews)
      # 212842982
      Oldsmobile Cutlass with 7.5" Ring Gear with General Motors Series Axle with 27 Pinion Spline 1978, Complete Series™ Differential Kit by Ratech®. Designed with precision and functionality in mind, this accessory ensures outstanding...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $79.71
    • (0 reviews)
      # 212843018
      Oldsmobile Cutlass with 7.5" Ring Gear with General Motors Series Axle 1978, Differential Installation Kit by Ratech®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $39.82
    • (0 reviews)
      # mpn2035563
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme 1978, Rear Differential Bearing by Timken®. Get optimum vehicle performance with Timken bearings. Timken manufactures ball bearings, cylindrical roller bearings, and tapered roller...
      Designed to effectively reduce frictionUltimate load handling capability
      $7.11
    • (0 reviews)
      # 531121824
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme with 7.5" Ring Gear with 3" Bearing OD 1978, Rear Differential Pinion Bearing by Timken®. Get optimum vehicle performance with Timken bearings. Timken manufactures ball bearings,...
      Designed to effectively reduce frictionUltimate load handling capability
      $7.43 - $13.84
    • (0 reviews)
      # mpn2054383
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme with 7.5" Ring Gear with 3" Bearing OD 1978, Rear Differential Pinion Seal by Timken®. Timken offers the right seal to keep your vehicle running optimally. Timken seals provide...
      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
      $8.76
    • (0 reviews)
      # 531133399
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme 1978, 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...
      OE quality fit, performance, and reliabilityCost-effective friction management solution
      $4.37 - $7.65
    • (0 reviews)
      # mpn2006957
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme with 7.5" Ring Gear with 3" Bearing OD 1978, Rear Outer Differential Pinion Race by Timken®. Precision manufactured using premium materials and made by the company that is trusted by...
      OE quality fit, performance, and reliabilityCost-effective friction management solution
      $3.74
    • (0 reviews)
      # 531049409
      Oldsmobile Cutlass / Cutlass Supreme 1978, Differential Crush Sleeve by Dorman®. A necessary item to replace when servicing the differential, Dorman’s Differential Crush Sleeve is durably built to retain optimal pressure when the...
      Direct replacement for a proper fit every timeDesigned specifically for rear-wheel drive vehicles
      $2.86 - $3.07
    • (0 reviews)
      # 531055378
      Oldsmobile Cutlass 1978, 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 differential. The Bolt is...
      Replacement restores drivabilityDirect replacement for a proper fit
      $1.74
    • (0 reviews)
      # mpn1074426
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme with 7.5" Ring Gear with GM Series Axle 1978, Rear Axle Differential Bearing by National®. This bearing is manufactured from high quality steel and constructed utilizing...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $7.78
    • (0 reviews)
      # mpn1074425
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme with 7.5" Ring Gear with GMC Transmission 1978, Rear Axle Differential Bearing Race by National®. This part is manufactured by one of the most trusted names in the automotive industry...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $4.16
    • (0 reviews)
      # 531071251
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme with 7.5" Ring Gear with GM Series Axle 1978, Rear Differential Pinion Bearing by National®. This bearing is manufactured from high quality steel and constructed utilizing...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $7.08 - $14.65
    • (0 reviews)
      # 531079855
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme with 7.5" Ring Gear with GM Series Axle 1978, Rear Differential Pinion Race by National®. This part is manufactured by one of the most trusted names in the automotive industry to keep...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $3.57 - $7.35
    • (0 reviews)
      # mpn1290815
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme with 7.5" Ring Gear with GMC Transmission 1978, Rear Outer Differential Pinion Repair Sleeve by National®. This part is manufactured by one of the most trusted names in the automotive...
      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
      $19.40
    • (0 reviews)
      # mpn1307918
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme with 7.5" Ring Gear with GM Series Axle 1978, Rear Outer Differential Pinion Seal by National®. This product is made of high-quality materials to serve you for years to come. Designed...
      National oil seals are recognized worldwide for their quality and reliable performance for every type of repair.Design Type: Spring Loaded; Multi-Lip
      $9.45
    • (0 reviews)
      # 212842991
      Oldsmobile Cutlass with 7.5" Ring Gear with General Motors Series Axle 1978, Crush Sleeve by Ratech®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $3.83
    • (0 reviews)
      # 212843001
      Oldsmobile Cutlass with 7.5" Ring Gear with General Motors Series Axle with 25 Spline 1978, Differential Bearing Kit by Ratech®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $52.94
    • (0 reviews)
      # 212843049
      Oldsmobile Cutlass with 7.5" Ring Gear with General Motors Series Axle 1978, Differential Bearing Spacer by Ratech®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $12.62
    • (0 reviews)
      # 212843006
      Oldsmobile Cutlass with 7.5" Ring Gear with General Motors Series Axle 1978, Differential Carrier Bearing Set by Ratech®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $23.34
    • (0 reviews)
      # 212842996
      Oldsmobile Cutlass with 7.5" Ring Gear with General Motors Series Axle with 30 Pinion Spline 1978, Differential Pinion Bearing by Ratech®. Designed with precision and functionality in mind, this accessory ensures outstanding performance...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $19.11
    • (0 reviews)
      # 212843023
      Oldsmobile Cutlass with 7.5" Ring Gear with General Motors Series Axle 1978, Differential Pinion Nut by Ratech®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $2.62
    • (0 reviews)
      # 212843034
      Oldsmobile Cutlass with 7.5" Ring Gear with General Motors Series Axle 1978, Pinion Shim Set by Ratech®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $9.53
    • (0 reviews)
      # 212843041
      Oldsmobile Cutlass with 7.5" Ring Gear with General Motors Series Axle 1978, Ring Gear Bolt Set by Ratech®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $14.72
    • (0 reviews)
      # 212843047
      Oldsmobile Cutlass with 7.5" Ring Gear with General Motors Series Axle 1978, Smart Sleeve Crush Sleeve by Ratech®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $9.62
    • (0 reviews)
      # 503660098
      Oldsmobile Cutlass with 10 Bolt 1978, A-Line 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,...
      Quiet operationComputer controlled heat treatment
      $144.79 - $156.44
    • (0 reviews)
      # mpn4517168181
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme with 2.73 and Up Gear Ratio with GM 8.5" Series Axle with 10 Bolt 1978, Differential Carrier by Motive Gear®. Without Internal Kit. All Motive Gear products are engineered for their...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $77.55
    • (1 review)
      # 503622159
      Oldsmobile Cutlass with 10 Bolt 1978, 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 from first-run steel, we never...
      Central contact patternCNC start to finish
      $210.38 - $265.28
    • (0 reviews)
      # mpn4517172536
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme with 3.23 and Up Gear Ratio with GM 7.5" Series Axle with 10 Bolt 1978, Rear Pro Gear Ring and Pinion Gear Set by Motive Gear®. Location: Rear. Motive Gear Pro Gear ring and pinions...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $448.50
    • (0 reviews)
      # 503467127
      Oldsmobile Cutlass with 10 Bolt 1978, 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...
      Quiet operationComputer controlled heat treatment
      $199.86 - $251.95
    • (0 reviews)
      # 1029225606
      Oldsmobile Cutlass with 3.23 and Up Gear Ratio with GM 7.5" Series Axle with 10 Bolt with 1.16" Axle Shaft Diameter 1978, Detroit Locker™ Rear Differential by Eaton®. Location: Rear. The Detroit Locker is a 100%-automatic locking...
      100% automatic locking - no driver action neededProvides maximum amount of traction to both wheel ends
      $774.70
    • (0 reviews)
      # 1029177615
      Oldsmobile Cutlass with GM 7.5" Series Axle with 10 Bolt with 1.16" Axle Shaft Diameter 1978, Detroit Truetrac™ Rear Differential by Eaton®. Location: Rear. The Detroit Truetrac is a helical-gear style performance differential that...
      Helical-style pinion gearsLimited-slip operation
      $462.64 - $464.68
    • (0 reviews)
      # 1029108550
      Oldsmobile Cutlass with 3.23 and Up Gear Ratio with GM 7.5" Series Axle with 10 Bolt with 1.16" Axle Shaft Diameter 1978, Posi™ Rear Differential by Eaton®. Location: Rear. The Eaton Posi limited-slip differential prevents wheel slip...
      Superior rebuildable designRace-bred carbon friction discs
      $487.18
    • (0 reviews)
      # mpn4517172801
      Oldsmobile Cutlass with 26 Spline / with 28 Spline with 3.23 and Up Gear Ratio with GM 7.5" Series Axle 1978, Rear Dura Grip Carrier Case by Yukon Gear & Axle®. Without Spider Gears. Location: Rear. Dominate the track or hit the trails...
      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
      $254.96
    • (0 reviews)
      # 183019167
      Oldsmobile Cutlass with 3.23 and Up Gear Ratio with GM 7.5" Series Axle 1978, Rear Dura Grip Positraction by Yukon Gear & Axle®. Location: Rear. The Yukon Dura Grip an example of the popular clutch plate limited slips that appeared as...
      Provides aggressive yet smooth traction to give you the confidence and performance you needFully rebuildable 4 spring design with composite clutches
      $521.31
    • (0 reviews)
      # 183019133
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear High Performance Ring and Pinion Gear Set by Yukon Gear & Axle®. Location: Rear. Yukon Ring and Pinion sets give you the confidence of knowing you’re running gears designed for...
      Smooth finishEasy Set-Up
      $262.49 - $412.00
    • (0 reviews)
      # 1029327510
      Oldsmobile Cutlass with 26 Spline with GM 7.5" Series Axle with 10 Bolt 1978, HP™ Rear Limited Slip Differential by Auburn Gear®. Location: Rear. High Performance. Auburn Gear’s flagship limited-slip differential gives you smooth...
      Expertly crafted from superior materialsProvides exceptional reliability
      $416.16
    • (0 reviews)
      # 1029231575
      Oldsmobile Cutlass with 26 Spline with GM 7.5" Series Axle with 10 Bolt 1978, Pro™ Rear Limited Slip Differential by Auburn Gear®. Location: Rear. Turns your torque up another notch, offering an even higher bias ratio and faster...
      Expertly crafted from superior materialsProvides exceptional reliability
      $474.91
    • (0 reviews)
      # 503525449
      Oldsmobile Cutlass with Open Differential 1978, 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
      $336.26 - $406.60
    • (0 reviews)
      # 503391217
      Oldsmobile Cutlass with Open Differential 1978, 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 - $443.21
    • (0 reviews)
      # 503294468
      Oldsmobile Cutlass with 28 Spline 1978, Open Grip LS Traction System by Powertrax®. The Powertrax Grip LS, is a clutch-type differential in a forged steel case. This differential uses a set of carbon clutch discs to provide traction as...
      Comes Fully AssembledCarbon Fiber and Steel Friction Plate Technology
      $443.35 - $457.67
    • (0 reviews)
      # 503446089
      Oldsmobile Cutlass with 10 Bolt 1978, 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 first-run steel, never recycled...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $221.45 - $279.10
    • (0 reviews)
      # 126869011
      Oldsmobile Cutlass with 10 Bolt 1978, 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...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $72.92 - $85.16
    • (0 reviews)
      # 503503196
      Oldsmobile Cutlass 1978, 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
      $45.48 - $59.93
    • (0 reviews)
      # 503407249
      Oldsmobile Cutlass with 10 Bolt 1978, 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...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $89.63 - $100.58
    • (0 reviews)
      # 503650502
      Oldsmobile Cutlass with 10 Bolt 1978, Differential Pinion 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 with these premium...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $46.56 - $59.74
    • (0 reviews)
      # 503297010
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme 1978, Rear Differential Carrier Gear Kit by Motive Gear®. Location: Rear. 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
      $104.99 - $108.20
    • (0 reviews)
      # 503582475
      Oldsmobile Cutlass with GM 7.5" Series Axle with 10 Bolt 1978, Rear Differential Super Bearing Kit by Motive Gear®. Location: Rear. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $113.17 - $129.62
    • (0 reviews)
      # 503686697
      Oldsmobile Cutlass / Cutlass Salon / Cutlass Supreme with Open Differential with 7.5" Series Axle with 10 Bolt 1978, Rear Mini Spool by Motive Gear®. Location: Rear. Dominate the track or hit the trails with confidence by fine tuning...
      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)
      # mpn4517171905
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Differential Bearing Installation Kit by Yukon Gear & Axle®. With Timken Bearings and Races. Location: Rear. Dominate the track or hit the trails with confidence by fine tuning your...
      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
      $154.27
    • (0 reviews)
      # mpn4517167244
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Differential Carrier Bearing Kit by Yukon Gear & Axle®. Location: Rear. Includes: Carrier bearings, races and "super" carrier shim kit. Yukon Carrier installation kits are great,...
      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
      $67.28
    • (0 reviews)
      # mpn4517166772
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Differential Master Overhaul Kit by Yukon Gear & Axle®. Location: Rear. Yukon Master Overhaul kits give you all the high quality parts you need to start and finish every...
      Most complete kits on the marketComplete overhaul package to rebuild differential
      $201.27
    • (0 reviews)
      # mpn4517169914
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Differential Mini Installation Kit by Yukon Gear & Axle®. Location: Rear. Yukon Mini installation kits are a low cost solution for gear changes in newer vehicles where the bearings...
      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
      $74.15
    • (0 reviews)
      # mpn4517167246
      Oldsmobile Cutlass with GM 7.5" Series Axle 1978, Rear Differential Pinion Installation Kit by Yukon Gear & Axle®. Location: Rear. Yukon Pinion installation kits are a terrific solution for gear installation on lower mileage vehicles...
      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
      $125.62




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