1977 Oldsmobile Ninety-Eight Differentials & Components

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    • (0 reviews)
      # 531079350
      Oldsmobile Ninety-Eight with 8.5" Ring Gear 1977, 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...
      Replacement eliminates driveline grinding and whining soundsDirect replacement for a proper fit
      $166.95 - $204.95
    • (0 reviews)
      # mpn2017982
      Oldsmobile Ninety-Eight with 8.75" Ring Gear / with 8.88" Ring Gear 1977, Rear Standard Axle Differential Bearing and Seal Kit by Timken®. Get optimum vehicle performance with Timken bearings. Timken manufactures ball bearings,...
      Designed to effectively reduce frictionUltimate load handling capability
      $86.34
    • (0 reviews)
      # mpn2412739
      Oldsmobile Ninety-Eight with 8.5" Ring Gear 1977, 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...
      Replacement eliminates driveline grinding and whining soundsRobust steel construction ensures durability for years of service
      $106.95
    • (0 reviews)
      # 531063919
      Oldsmobile Ninety-Eight 1977, 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...
      Designed to effectively reduce frictionUltimate load handling capability
      $6.97 - $10.32
    • (0 reviews)
      # mpn2035566
      Oldsmobile Ninety-Eight with 8.88" Ring Gear / with 9.38" Ring Gear with M Series Axle / with P Series Axle 1977, Rear Differential Bearing Set by Timken®. Get optimum vehicle performance with Timken bearings. Timken manufactures ball...
      Designed to effectively reduce frictionUltimate load handling capability
      $11.71
    • (0 reviews)
      # 531104784
      Oldsmobile Ninety-Eight with 7.5" Ring Gear with 3" Bearing OD 1977, 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
      $7.28 - $13.57
    • (0 reviews)
      # 531082716
      Oldsmobile Ninety-Eight 1977, 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...
      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
      $4.93 - $8.60
    • (0 reviews)
      # 531081477
      Oldsmobile Ninety-Eight 1977, 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...
      OE quality fit, performance, and reliabilityCost-effective friction management solution
      $4.13 - $7.50
    • (0 reviews)
      # mpn2006957
      Oldsmobile Ninety-Eight with 7.5" Ring Gear with 3" Bearing OD 1977, 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...
      OE quality fit, performance, and reliabilityCost-effective friction management solution
      $3.67
    • (0 reviews)
      # 531069940
      Oldsmobile Ninety-Eight 1977, 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 pinion gear nut...
      Direct replacement for a proper fit every timeDesigned specifically for rear-wheel drive vehicles
      $2.78 - $2.98
    • (0 reviews)
      # mpn2377088
      Oldsmobile Ninety-Eight with 7.5" Ring Gear / with 8.5" Ring Gear / with 8.75" Ring Gear 1977, Rear Differential Pinion Shaft Lock Bolt by Dorman®. Engineered from high-quality metal, Dorman’s Differential Pinion Shaft Lock Bolt...
      Replacement restores drivabilityDirect replacement for a proper fit
      $1.72
    • (0 reviews)
      # 531055647
      Oldsmobile Ninety-Eight with GM Series Axle 1977, Rear Axle Differential Bearing by National®. This bearing is manufactured from high quality steel and constructed utilizing state-of-the-art computer controlled heat treatment technology...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $8.38 - $12.43
    • (0 reviews)
      # mpn1074425
      Oldsmobile Ninety-Eight with 7.5" Ring Gear / with 8.5" Ring Gear with GMC Transmission 1977, Rear Axle Differential Bearing Race by National®. This part is manufactured by one of the most trusted names in the automotive industry to...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $4.24
    • (0 reviews)
      # 531056984
      Oldsmobile Ninety-Eight with GM Series Axle 1977, Rear Axle Differential Bearing and Seal Kit by National®. This bearing is manufactured from high quality steel and constructed utilizing state-of-the-art computer controlled heat...
      Spindle bearing and seal kitIncludes all components required to complete the repair
      $56.28 - $73.50
    • (0 reviews)
      # 531185120
      Oldsmobile Ninety-Eight with GM Series Axle 1977, 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...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $7.22 - $15.75
    • (0 reviews)
      # 531066962
      Oldsmobile Ninety-Eight with GM Series Axle 1977, 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...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $3.64 - $7.50
    • (0 reviews)
      # 531091888
      Oldsmobile Ninety-Eight with GMC Transmission 1977, 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 perform optimally....
      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
      $18.48 - $20.51
    • (0 reviews)
      # 531088281
      Oldsmobile Ninety-Eight with GM Series Axle 1977, 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...
      National oil seals are recognized worldwide for their quality and reliable performance for every type of repair.Design Type: Spring Loaded; Multi-Lip
      $5.41 - $9.63
    • (0 reviews)
      # 990453118
      Oldsmobile Ninety-Eight 1977, 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...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $18.99
    • (0 reviews)
      # mpn4515290619
      Oldsmobile Ninety-Eight with GM 7.5" Series Axle / with GM 8.5" Series Axle 1977, Differential Pinion Nut by AllStar Performance®. Designed utilizing the latest technology, this product by AllStar Performance features premium quality...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $4.99
    • (0 reviews)
      # 990428881
      Oldsmobile Ninety-Eight 1977, 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...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $6.99
    • (0 reviews)
      # mpn4515290647
      Oldsmobile Ninety-Eight with GM 7.5" Series Axle 1977, Mini Spool by AllStar Performance®. Designed utilizing the latest technology, this product by AllStar Performance features premium quality and will perform better than advertised....
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $96.99
    • (0 reviews)
      # mpn4515294792
      Oldsmobile Ninety-Eight with GM 7.5" Series Axle 1977, Ring Gear Spacer by AllStar Performance®. Designed utilizing the latest technology, this product by AllStar Performance features premium quality and will perform better than...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $52.99
    • (0 reviews)
      # 990430895
      Oldsmobile Ninety-Eight with 10 Bolt 1977, Ring and Pinion Gear Set by AllStar Performance®. CA Prop 65 WARNING - This product contains chemicals known to the State of California to cause cancer, and/or birth defects or other...
      Precise manufacturing and high-grade materialsExceptional performance at a competitive price
      $149.99
    • (0 reviews)
      # 1016976702
      Oldsmobile Ninety-Eight 1977, Ring and Pinion Installation Bearing Kit by AllStar Performance®. Designed utilizing the latest technology, this product by AllStar Performance features premium quality and will perform better than...
      Precise manufacturing and high-grade materialsExceptional performance at a competitive price
      $97.99 - $99.99
    • (0 reviews)
      # 1066630504
      Oldsmobile Ninety-Eight with 10 Bolt 1977, Ring and Pinion Installation Shim Kit by AllStar Performance®. CA Prop 65 WARNING - This product contains chemicals known to the State of California to cause cancer, and/or birth defects or...
      Precise manufacturing and high-grade materialsExceptional performance at a competitive price
      $43.99
    • (0 reviews)
      # mpn4561984219
      Oldsmobile Ninety-Eight with GM 8.5" Series Axle 1977, Rear Differential Master Overhaul Kit by Alloy USA®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with...
      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
      $183.00
    • (0 reviews)
      # mpn4517168131
      Oldsmobile Ninety-Eight Luxury / Regency with 28 Spline with 2.73 and Up Gear Ratio with GM 8.5" Series Axle with 10 Bolt 1977, ECTED Max™ Rear Limited Slip Differential by Auburn Gear®. With Selectable Full Locker. The ECTED Max is a...
      Expertly crafted from superior materialsProvides exceptional reliability
      $776.82
    • (0 reviews)
      # 1028986537
      Oldsmobile Ninety-Eight Luxury / Regency with 10 Bolt 1977, HP™ Rear Limited Slip Differential by Auburn Gear®. High Performance. Auburn Gear’s flagship limited-slip differential gives you smooth torque-sensing operation with the...
      Expertly crafted from superior materialsProvides exceptional reliability
      $436.80
    • (0 reviews)
      # 1029026551
      Oldsmobile Ninety-Eight Luxury / Regency with 10 Bolt 1977, Pro™ Rear Limited Slip Differential by Auburn Gear®. Turns your torque up another notch, offering an even higher bias ratio and faster sensing reaction than HP for the very...
      Expertly crafted from superior materialsProvides exceptional reliability
      $502.94 - $549.12
    • (0 reviews)
      # 503517105
      Oldsmobile Ninety-Eight Luxury / Regency with 10 Bolt 1977, Rear Differential Spring Retainer Service Kit by Auburn Gear®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and...
      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
      $110.82 - $113.82
    • (0 reviews)
      # mpn4517168044
      Oldsmobile Ninety-Eight Luxury / Regency with 28 Spline with 2.73 and Up Gear Ratio with GM 8.5" Series Axle with 10 Bolt 1977, Rear Differential Wiring Harness Kit by Auburn Gear®. With Switch. Dominate the track or hit the trails with...
      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
      $85.36
    • (0 reviews)
      # 1029274520
      Oldsmobile Ninety-Eight with 10 Bolt 1977, Detroit Locker™ Rear Differential by Eaton®. The Detroit Locker is a 100%-automatic locking differential that provides ultimate traction for mild to extreme vehicle applications. Its unique,...
      100% automatic locking - no driver action neededProvides maximum amount of traction to both wheel ends
      $759.51 - $828.54
    • (0 reviews)
      # 1029354630
      Oldsmobile Ninety-Eight with 10 Bolt 1977, Detroit Truetrac™ Rear Differential by Eaton®. The Detroit Truetrac is a helical-gear style performance differential that maximizes wheel traction and enhances driving and handling...
      Helical-style pinion gearsLimited-slip operation
      $475.41 - $512.73
    • (0 reviews)
      # mpn4517168680
      Oldsmobile Ninety-Eight with 2.73 and Up Gear Ratio with GM 8.5" Series Axle with 10 Bolt with 1.20" Axle Shaft Diameter with Manual Locking Hubs 1977, Posi™ Rear Differential by Eaton®. The Eaton Posi limited-slip differential...
      Superior rebuildable designRace-bred carbon friction discs
      $499.99
    • (0 reviews)
      # 503691161
      Oldsmobile Ninety-Eight with 10 Bolt 1977, 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
      $260.40 - $281.32
    • (0 reviews)
      # 503402184
      Oldsmobile Ninety-Eight with 10 Bolt 1977, 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
      $116.07 - $166.40
    • (0 reviews)
      # mpn4517168181
      Oldsmobile Ninety-Eight with 2.73 and Up Gear Ratio with GM 8.5" Series Axle with 10 Bolt 1977, 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
      $141.20
    • (0 reviews)
      # 503662322
      Oldsmobile Ninety-Eight 1977, 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 performance with this premium differential...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $163.46 - $197.01
    • (0 reviews)
      # 1029097553
      Oldsmobile Ninety-Eight 1977, 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...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $31.21 - $31.53
    • (0 reviews)
      # 503627185
      Oldsmobile Ninety-Eight with 10 Bolt 1977, Differential Crush Sleeve 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
      $3.01 - $3.16
    • (0 reviews)
      # 503599528
      Oldsmobile Ninety-Eight 1977, 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...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $82.09 - $108.13
    • (0 reviews)
      # 503551192
      Oldsmobile Ninety-Eight with 10 Bolt 1977, 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
      $114.16 - $161.61
    • (0 reviews)
      # 503347527
      Oldsmobile Ninety-Eight with GM 8.5" Series Axle with 10 Bolt 1977, 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...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $79.80 - $95.11
    • (0 reviews)
      # mpn4517167740
      Oldsmobile Ninety-Eight 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"...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $5.48
    • (0 reviews)
      # 503512277
      Oldsmobile Ninety-Eight 1977, 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 premium differential component...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $4.74 - $5.35
    • (0 reviews)
      # mpn4517168484
      Oldsmobile Ninety-Eight with GM 8.5" Series Axle 1977, 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
      $33.73
    • (0 reviews)
      # 503675192
      Oldsmobile Ninety-Eight 1977, Differential Pinion Shim Pack 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
      $9.56 - $19.94
    • (0 reviews)
      # mpn4517167735
      Oldsmobile Ninety-Eight 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"...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $4.80
    • (0 reviews)
      # mpn4517166247
      Oldsmobile Ninety-Eight with GM 8.5" Series Axle 1977, 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...
      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
      $77.89
    • (0 reviews)
      # 503471985
      Oldsmobile Ninety-Eight with 10 Bolt 1977, 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 with this premium...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $181.82 - $202.04
    • (0 reviews)
      # 503617383
      Oldsmobile Ninety-Eight with Open Differential with 10 Bolt 1977, 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 with this premium...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $148.38
    • (1 review)
      # 503587224
      Oldsmobile Ninety-Eight with 2.73 and Up Gear Ratio with GM 8.5" Series Axle / with GM 8.625" Series Axle with 10 Bolt 1977, Performance Ring and Pinion Gear Set by Motive Gear®. Motive Gear Performance ring and pinions are perfect for...
      Central contact patternCNC start to finish
      $325.14 - $367.77
    • (0 reviews)
      # mpn4517172536
      Oldsmobile Ninety-Eight with 3.23 and Up Gear Ratio with GM 7.5" Series Axle with 10 Bolt 1977, 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...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $604.83
    • (0 reviews)
      # 503623346
      Oldsmobile Ninety-Eight with 10 Bolt 1977, 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
      $283.92 - $339.77
    • (0 reviews)
      # 503542380
      Oldsmobile Ninety-Eight with 8.5" Series Axle with 10 Bolt 1977, Spool 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
      $266.77 - $269.37
    • (0 reviews)
      # 1146132248
      Oldsmobile Ninety-Eight 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 1977, Differential Locker by OX Off Road®. OX Lockers can instantly lock differentials and allow you...
      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)
      # mpn4517169981
      Oldsmobile Ninety-Eight with GM 8.5" Series Axle 1977, 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...
      High quality at an affordable priceExpertly made from premium materials
      $26.08
    • (0 reviews)
      # 503416444
      Oldsmobile Ninety-Eight with Open Differential 1977, 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)
      # 503323075
      Oldsmobile Ninety-Eight with Open Differential 1977, 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....
      Extreme Traction PerformanceEnables a 2 Wheel Drive to outperform a 4 Wheel Drive in poor traction conditions
      $418.28 - $443.21




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