1978 Oldsmobile Calais Differentials & Components

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    • (0 reviews)
      # 531200636
      Oldsmobile Calais 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 driveshaft to the axles. It's robust...
      Replacement eliminates driveline grinding and whining soundsDirect replacement for a proper fit
      $115.44 - $168.95
    • (0 reviews)
      # mpn2035563
      Oldsmobile Calais 1978, 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
      $7.11
    • (0 reviews)
      # 531157713
      Oldsmobile Calais 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, cylindrical roller bearings, and...
      Designed to effectively reduce frictionUltimate load handling capability
      $7.43 - $13.84
    • (0 reviews)
      # mpn2054383
      Oldsmobile Calais 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 ultimate protection from contaminants and...
      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)
      # 531163396
      Oldsmobile Calais 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 if you opt for a highly durable...
      OE quality fit, performance, and reliabilityCost-effective friction management solution
      $4.37 - $7.65
    • (0 reviews)
      # mpn2006957
      Oldsmobile Calais 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 many carmakers, the Timken race is...
      OE quality fit, performance, and reliabilityCost-effective friction management solution
      $3.74
    • (0 reviews)
      # mpn2377088
      Oldsmobile Calais 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 Calais 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 state-of-the-art computer controlled heat...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $7.78
    • (0 reviews)
      # mpn1074425
      Oldsmobile Calais 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 to keep your vehicle perform...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $4.16
    • (0 reviews)
      # 531188099
      Oldsmobile Calais 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 state-of-the-art computer controlled heat...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $7.08 - $14.65
    • (0 reviews)
      # 531199341
      Oldsmobile Calais 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 your vehicle perform optimally. It...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $3.57 - $7.35
    • (0 reviews)
      # mpn1290815
      Oldsmobile Calais 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 industry to keep your vehicle...
      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
      $19.02
    • (0 reviews)
      # mpn1307918
      Oldsmobile Calais 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 using state-of-the-art technology...
      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)
      # 503354113
      Oldsmobile Calais 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 Calais 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 specific application and...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $77.55
    • (1 review)
      # 503646139
      Oldsmobile Calais with 2.73 and Up Gear Ratio with GM 8.5" Series Axle / with GM 8.625" Series Axle with 10 Bolt 1978, Performance Ring and Pinion Gear Set by Motive Gear®. Motive Gear Performance ring and pinions are perfect for...
      Central contact patternCNC start to finish
      $210.38 - $265.28
    • (0 reviews)
      # mpn4517172536
      Oldsmobile Calais 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 are perfect for dedicated racing or...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $448.50
    • (0 reviews)
      # 503577043
      Oldsmobile Calais 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)
      # mpn4517168200
      Oldsmobile Calais 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)
      # 1029133556
      Oldsmobile Calais 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)
      # mpn4517169609
      Oldsmobile Calais 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)
      # 1029129574
      Oldsmobile Calais 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)
      # 1028890002
      Oldsmobile Calais 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)
      # 503345005
      Oldsmobile Calais 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)
      # 503397191
      Oldsmobile Calais 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)
      # 503296334
      Oldsmobile Calais 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)
      # 503484444
      Oldsmobile Calais 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)
      # mpn4517166105
      Oldsmobile Calais with 7.5" Series Axle 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...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $45.48
    • (0 reviews)
      # 503618205
      Oldsmobile Calais with GM 7.5" Series Axle with 10 Bolt 1978, Rear Differential Bearing Kit by Motive Gear®. Location: Rear. All Motive Gear products are engineered for their specific application and manufactured in state of the art...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $75.43 - $79.18
    • (0 reviews)
      # 503435021
      Oldsmobile Calais 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 performance with this premium...
      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)
      # 503451077
      Oldsmobile Calais with GM 7.5" Series Axle with 10 Bolt 1978, Rear Differential Master Bearing Kit by Motive Gear®. Location: Rear. All Motive Gear products are engineered for their specific application and manufactured in state of the...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $90.49 - $100.58
    • (0 reviews)
      # 503547544
      Oldsmobile Calais 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 - $125.76
    • (0 reviews)
      # 503556371
      Oldsmobile Calais 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 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
      $80.99 - $81.49
    • (0 reviews)
      # mpn4517166583
      Oldsmobile Calais with GM 7.5 Series Axle / with GM 7.625" Series Axle 1978, Differential Mega Bearing Kit by Richmond®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $157.24
    • (0 reviews)
      # 503690384
      Oldsmobile Calais with Open Differential with GM 7.5" Series Axle 1978, Rear Mini Spool by Richmond®. Location: Rear. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $100.35
    • (0 reviews)
      # 1028948949
      Oldsmobile Calais 1978, Differential Carrier Shim 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
      $17.31 - $21.36
    • (0 reviews)
      # mpn4517169338
      Oldsmobile Calais with Aftermarket Gear Set with 7.5" Series Axle with 10 Bolt 1978, Differential Crush Sleeve by Motive Gear®. All Motive Gear products are engineered for their specific application and manufactured in state of the art...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $2.81
    • (0 reviews)
      # mpn4517167740
      Oldsmobile Calais with Chrysler 7.25" Series Axle / with Chrysler 8" Series Axle / with Chrysler 8.25" Series Axle / with Chrysler 8.375" Series Axle / with Chrysler 9.25" Series Axle / with GM 7.2" Series Axle / with GM 7.5" Series Axle...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $3.75
    • (0 reviews)
      # mpn4517167924
      Oldsmobile Calais with 7.5" Series Axle with 10 Bolt 1978, Differential Pinion Seal by Motive Gear®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with this...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $2.94
    • (0 reviews)
      # mpn4517168484
      Oldsmobile Calais with GM 8.5" Series Axle 1978, Differential Pinion Shaft by Motive Gear®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with this premium...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $18.71
    • (0 reviews)
      # mpn4517166414
      Oldsmobile Calais with 7.2" Series Axle / with 7.5" Series Axle / with 7.25" Series Axle / with 7.75" Series Axle / with 7.625" Series Axle / with 8.2" Series Axle / with 8.5" Series Axle / with 8.875" Series Axle / with Dana 44 Series...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $11.07
    • (0 reviews)
      # mpn4517167735
      Oldsmobile Calais with Chrysler 9.25" Series Axle / with GM 7.5" Series Axle / with GM 7.75" Series Axle / with GM 7.625" Series Axle / with GM 8" Series Axle / with GM 8.2" Series Axle / with GM 8.5" Series Axle / with GM 8.625" Series...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $2.47
    • (0 reviews)
      # 503514502
      Oldsmobile Calais 1978, Differential Ring Gear Spacer by Motive Gear®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with this premium differential component...
      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
      $45.62 - $45.71
    • (0 reviews)
      # 503670192
      Oldsmobile Calais with 26 Spline with 3.08 and Down Gear Ratio / with 3.23 and Up Gear Ratio with GM 7.5" Series Axle with 10 Bolt 1978, Rear Differential Spring Retainer Service Kit by Auburn Gear®. Location: Rear. Dominate the track...
      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
      $104.28
    • (0 reviews)
      # mpn4517169981
      Oldsmobile Calais with GM 8.5" Series Axle 1978, Differential Pinion Shaft by Powertrax®. These hardened cross shafts are specifically designed for use with your Powertrax Lock Right locker. Powertrax Grip-Lok, Lock-Right Lockers and...
      High quality at an affordable priceExpertly made from premium materials
      $25.58
    • (0 reviews)
      # mpn4517166560
      Oldsmobile Calais with GM 7.5 Series Axle / with GM 7.625" Series Axle 1978, Differential Bearing Kit by Richmond®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $140.76
    • (0 reviews)
      # 503635581
      Oldsmobile Calais 1978, Differential Pinion Shaft by Richmond®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with this premium differential component that...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $15.75 - $41.42
    • (0 reviews)
      # 990405063
      Oldsmobile Calais 1978, Differential Cross Pin by AllStar Performance®. Designed utilizing the latest technology, this product by AllStar Performance features premium quality and will perform better than advertised. Perfect for your...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $18.99
    • (0 reviews)
      # mpn4515290619
      Oldsmobile Calais with GM 7.5" Series Axle / with GM 8.5" Series Axle 1978, Differential Pinion Nut by AllStar Performance®. Designed utilizing the latest technology, this product by AllStar Performance features premium quality and will...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $4.99
    • (0 reviews)
      # 990452698
      Oldsmobile Calais 1978, Differential Pinion Seal by AllStar Performance®. Designed utilizing the latest technology, this product by AllStar Performance features premium quality and will perform better than advertised. Perfect for your...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $6.99
    • (0 reviews)
      # mpn4515290647
      Oldsmobile Calais with GM 7.5" Series Axle 1978, Mini Spool by AllStar Performance®. Designed utilizing the latest technology, this product by AllStar Performance features premium quality and will perform better than advertised. Perfect...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $96.99
    • (0 reviews)
      # mpn4515294792
      Oldsmobile Calais with GM 7.5" Series Axle 1978, Ring Gear Spacer by AllStar Performance®.
      $52.99
    • (0 reviews)
      # 990445748
      Oldsmobile Calais with GM 7.5" Series Axle with 10 Bolt 1978, Ring and Pinion Gear Set by AllStar Performance®.
      Precise manufacturing and high-grade materialsExceptional performance at a competitive price
      $149.99
    • (0 reviews)
      # 1016991764
      Oldsmobile Calais 1978, Ring and Pinion Installation Bearing Kit by AllStar Performance®.
      Precise manufacturing and high-grade materialsExceptional performance at a competitive price
      $97.99 - $99.99
    • (0 reviews)
      # mpn4515294760
      Oldsmobile Calais with GM 7.5" Series Axle with 10 Bolt 1978, Ring and Pinion Installation Shim Kit by AllStar Performance®.
      Precise manufacturing and high-grade materialsExceptional performance at a competitive price
      $43.99
    • (0 reviews)
      # 1145910352
      Oldsmobile Calais with 2.73 and Up Gear Ratio with Front GM 8.5" (10 Bolt) Series Axle / with Rear GM 8.5" (10 Bolt) Series Axle 1978, Differential Locker by OX Off Road®. OX Lockers can instantly lock differentials and allow you to...
      Easy clean cabin friendly installation with no setup adjustmentsStandard system uses no electric for a higher level of dependability
      $859.00 - $994.00
    • (0 reviews)
      # mpn4517169459
      Oldsmobile Calais with 2.73 Ratio and Numerically Higher with GM 8.5" Series Axle with 10 Bolt 1978, Excel™ Differential Carrier by Richmond®. Designed utilizing the latest technology, this product by Richmond features premium quality...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $74.55
    • (0 reviews)
      # mpn4517171284
      Oldsmobile Calais with GM 7.5" Series Axle with 10 Bolt 1978, Excel™ Rear Differential Bearing Kit by Richmond®. Location: Rear. Designed utilizing the latest technology, this product by Richmond features premium quality and will...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $93.46
    • (0 reviews)
      # 1029254593
      Oldsmobile Calais 1978, Excel™ Rear Differential Carrier Gear Kit by Richmond®. Location: Rear. Designed utilizing the latest technology, this product by Richmond features premium quality and will perform better than advertised....
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $101.92 - $105.05
    • (0 reviews)
      # 1029299587
      Oldsmobile Calais with 10 Bolt 1978, Excel™ Rear Ring and Pinion Gear Set by Richmond®. Location: Rear. Designed utilizing the latest technology, this product by Richmond features premium quality and will perform better than...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $164.95 - $194.50




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