1985 Oldsmobile Eighty-Eight Differentials & Components

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    • (0 reviews)
      # 531135910
      Oldsmobile Eighty-Eight 1985, 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 steel...
      Replacement eliminates driveline grinding and whining soundsDirect replacement for a proper fit
      $101.89 - $204.95
    • (0 reviews)
      # 531047114
      Oldsmobile Eighty-Eight 1985, Rear Axle Differential Bearing and Seal Kit 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
      $63.24 - $108.57
    • (0 reviews)
      # 531101374
      Oldsmobile Eighty-Eight 1985, 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 hand.
      Replacement eliminates driveline grinding and whining soundsRobust steel construction ensures durability for years of service
      $110.95 - $121.95
    • (0 reviews)
      # 531106333
      Oldsmobile Eighty-Eight 1985, 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
      $6.88 - $10.42
    • (0 reviews)
      # mpn2035566
      Oldsmobile Eighty-Eight with 8.88" Ring Gear / with 9.38" Ring Gear with M Series Axle / with P Series Axle 1985, Rear Differential Bearing Set by Timken®. Get optimum vehicle performance with Timken bearings. Timken manufactures ball...
      Designed to effectively reduce frictionUltimate load handling capability
      $11.82
    • (0 reviews)
      # 531140717
      Oldsmobile Eighty-Eight with 7.5" Ring Gear with 3.13" Bearing Outer Diameter 1985, Rear Differential Pinion Bearing by Timken®. Get optimum vehicle performance with Timken bearings. Timken manufactures ball bearings, cylindrical roller...
      Designed to effectively reduce frictionUltimate load handling capability
      $7.35 - $15.98
    • (0 reviews)
      # 531138521
      Oldsmobile Eighty-Eight with 7.5" Ring Gear with 3.13" Bearing Outer Diameter 1985, Rear Differential Pinion Race by Timken®. Precision manufactured using premium materials and made by the company that is trusted by many carmakers, the...
      OE quality fit, performance, and reliabilityCost-effective friction management solution
      $3.71 - $8.19
    • (0 reviews)
      # 531146455
      Oldsmobile Eighty-Eight 1985, 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
      $4.98 - $8.68
    • (0 reviews)
      # 531079850
      Oldsmobile Eighty-Eight 1985, 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
      $4.17 - $5.49
    • (0 reviews)
      # 531050016
      Oldsmobile Eighty-Eight 1985, 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
      $2.80 - $3.01
    • (0 reviews)
      # mpn2377088
      Oldsmobile Eighty-Eight with 7.5" Ring Gear 1985, 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
      $1.73
    • (0 reviews)
      # mpn864657673
      Oldsmobile Eighty-Eight with 8.50" Ring Gear with Limited Slip Differential Rear Axle / with Positraction Differential Rear Axle 1985, GM Original Equipment™ Differential Magnet by ACDelco®. Don’t be “indifferent” toward your...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $5.21
    • (0 reviews)
      # 531080004
      Oldsmobile Eighty-Eight 1985, GM Original Equipment™ Differential Pinion Seal by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $14.41 - $16.76
    • (0 reviews)
      # 531192399
      Oldsmobile Eighty-Eight 1985, GM Original Equipment™ Rear Differential Bearing by ACDelco®. Don’t be “indifferent” toward your differential. It plays a vital role in moving your vehicle and ensuring a smooth ride. Designed...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $29.87
    • (0 reviews)
      # 531074468
      Oldsmobile Eighty-Eight with 7.50" Ring Gear 1985, GM Original Equipment™ Rear Differential Pinion Bearing by ACDelco®. Don’t be “indifferent” toward your differential. It plays a vital role in moving your vehicle and ensuring a...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $30.06 - $44.32
    • (0 reviews)
      # mpn4525249387
      Oldsmobile Eighty-Eight with 8.5" Ring Gear / with 8.625" Ring Gear with 10 Bolt Housing Cover 1985, GM Original Equipment™ Rear Inner Differential Carrier Bearing Shim by ACDelco®. Designed utilizing the latest technology, this...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $45.70
    • (0 reviews)
      # mpn1074426
      Oldsmobile Eighty-Eight with 7.5" Ring Gear / with 8.5" Ring Gear with GM Series Axle 1985, Rear Axle Differential Bearing by National®. This bearing is manufactured from high quality steel and constructed utilizing state-of-the-art...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $8.46
    • (0 reviews)
      # mpn1074425
      Oldsmobile Eighty-Eight with 7.5" Ring Gear / with 8.5" Ring Gear with GMC Transmission 1985, 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
      $4.28
    • (0 reviews)
      # 1471617829
      Oldsmobile Eighty-Eight with GM Series Axle 1985, 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
      $80.22 - $80.26
    • (0 reviews)
      # 531091300
      Oldsmobile Eighty-Eight with GM Series Axle 1985, 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
      $7.29 - $15.52
    • (0 reviews)
      # 531154733
      Oldsmobile Eighty-Eight with GM Series Axle 1985, 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
      $3.68 - $9.16
    • (0 reviews)
      # 531189412
      Oldsmobile Eighty-Eight with GMC Transmission 1985, 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
      $18.66 - $20.71
    • (0 reviews)
      # 531084799
      Oldsmobile Eighty-Eight with GM Series Axle 1985, 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
      $5.46 - $9.72
    • (0 reviews)
      # 1471628874
      Oldsmobile Eighty-Eight with 7.50" Ring Gear 1985, Rear Differential Rebuild Kit by SKF®. Designed utilizing the latest technology, this product by SKF features premium quality and will perform better than advertised. Perfect for your...
      Excellent replacement for your worn out or faulty partDesigned to restore original performance and reliability
      $82.52 - $118.00
    • (0 reviews)
      # 990410001
      Oldsmobile Eighty-Eight with 10 Bolt 1985, 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....
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $18.99
    • (0 reviews)
      # mpn4515290619
      Oldsmobile Eighty-Eight with GM 7.5" Series Axle / with GM 8.5" Series Axle 1985, 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)
      # 1064204340
      Oldsmobile Eighty-Eight 1985, 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 Eighty-Eight with GM 7.5" Series Axle 1985, 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 Eighty-Eight with GM 7.5" Series Axle 1985, 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)
      # 990456875
      Oldsmobile Eighty-Eight with 10 Bolt 1985, 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)
      # 1016938700
      Oldsmobile Eighty-Eight with 10 Bolt 1985, 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...
      Precise manufacturing and high-grade materialsExceptional performance at a competitive price
      $97.99 - $99.99
    • (0 reviews)
      # mpn4515293621
      Oldsmobile Eighty-Eight with GM 8.5" Series Axle with 10 Bolt 1985, 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,...
      Precise manufacturing and high-grade materialsExceptional performance at a competitive price
      $43.99
    • (0 reviews)
      # mpn4561984219
      Oldsmobile Eighty-Eight with GM 8.5" Series Axle 1985, 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
      $184.76
    • (0 reviews)
      # 1028957065
      Oldsmobile Eighty-Eight with 28 Spline with 2.73 and Up Gear Ratio with GM 8.5" Series Axle with 10 Bolt 1985, ECTED Max™ Rear Limited Slip Differential by Auburn Gear®. With Selectable Full Locker. The ECTED Max is a selectable...
      Expertly crafted from superior materialsProvides exceptional reliability
      $784.29
    • (0 reviews)
      # 1029069565
      Oldsmobile Eighty-Eight with 10 Bolt 1985, 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 correct bias ratios...
      Expertly crafted from superior materialsProvides exceptional reliability
      $441.00
    • (0 reviews)
      # 1029241571
      Oldsmobile Eighty-Eight with 10 Bolt 1985, 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 best in controlled...
      Expertly crafted from superior materialsProvides exceptional reliability
      $507.78 - $554.40
    • (0 reviews)
      # 503695180
      Oldsmobile Eighty-Eight with 10 Bolt 1985, 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 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
      $111.89 - $114.91
    • (0 reviews)
      # 1029043551
      Oldsmobile Eighty-Eight with 28 Spline with 2.73 and Up Gear Ratio with GM 8.5" Series Axle with 10 Bolt 1985, Rear Differential Wiring Harness Kit by Auburn Gear®. With Switch. Dominate the track or hit the trails with condidence by...
      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
      $86.18
    • (0 reviews)
      # mpn4517168100
      Oldsmobile Eighty-Eight with 2.73 to 5.13 Gear Ratio with GM 8.5" Series Axle with 10 Bolt with 1.20" Axle Shaft Diameter 1985, Detroit Locker™ Rear Differential by Eaton®. The Detroit Locker is a 100%-automatic locking differential...
      100% automatic locking - no driver action neededProvides maximum amount of traction to both wheel ends
      $828.54
    • (0 reviews)
      # 1029276612
      Oldsmobile Eighty-Eight with 10 Bolt 1985, 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)
      # mpn4517169609
      Oldsmobile Eighty-Eight with 3.23 and Up Gear Ratio with GM 7.5" Series Axle with 10 Bolt with 1.16" Axle Shaft Diameter 1985, Posi™ Rear Differential by Eaton®. The Eaton Posi limited-slip differential prevents wheel slip before it...
      Superior rebuildable designRace-bred carbon friction discs
      $504.99
    • (0 reviews)
      # 503345204
      Oldsmobile Eighty-Eight with 10 Bolt 1985, 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
      $149.05 - $161.04
    • (0 reviews)
      # 503567203
      Oldsmobile Eighty-Eight with 10 Bolt 1985, 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
      $75.06 - $106.63
    • (0 reviews)
      # 1480729970
      Oldsmobile Eighty-Eight with GM 8.5" Series Axle 1985, Differential Carrier 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
      $79.83 - $141.82
    • (0 reviews)
      # 503669387
      Oldsmobile Eighty-Eight with 10 Bolt 1985, 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...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $92.41 - $111.38
    • (0 reviews)
      # 1029013557
      Oldsmobile Eighty-Eight 1985, 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
      $17.82 - $21.99
    • (0 reviews)
      # 503653408
      Oldsmobile Eighty-Eight with 10 Bolt 1985, 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
      $2.80 - $3.03
    • (0 reviews)
      # 503462173
      Oldsmobile Eighty-Eight 1985, 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
      $46.82 - $61.68
    • (0 reviews)
      # 503552536
      Oldsmobile Eighty-Eight with 10 Bolt 1985, 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
      $92.26 - $111.45
    • (0 reviews)
      # 503650482
      Oldsmobile Eighty-Eight with 10 Bolt 1985, 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
      $47.93 - $61.50
    • (0 reviews)
      # mpn4517167740
      Oldsmobile Eighty-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
      $3.86
    • (0 reviews)
      # 503498311
      Oldsmobile Eighty-Eight 1985, 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
      $4.79 - $5.40
    • (0 reviews)
      # mpn4517168484
      Oldsmobile Eighty-Eight with GM 8.5" Series Axle 1985, 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
      $19.26
    • (0 reviews)
      # 503524073
      Oldsmobile Eighty-Eight 1985, 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
      $7.79 - $11.39
    • (0 reviews)
      # mpn4517167735
      Oldsmobile Eighty-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
      $2.99
    • (0 reviews)
      # mpn4517166247
      Oldsmobile Eighty-Eight with GM 8.5" Series Axle 1985, 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
      $46.97
    • (0 reviews)
      # 503556988
      Oldsmobile Eighty-Eight with 10 Bolt 1985, 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
      $118.55 - $133.43
    • (0 reviews)
      # 503541988
      Oldsmobile Eighty-Eight with Open Differential with 10 Bolt 1985, 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
      $83.37 - $83.88
    • (1 review)
      # 503485182
      Oldsmobile Eighty-Eight with 10 Bolt 1985, 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...
      Central contact patternCNC start to finish
      $275.54 - $367.77
    • (0 reviews)
      # mpn4517172536
      Oldsmobile Eighty-Eight with 3.23 and Up Gear Ratio with GM 7.5" Series Axle with 10 Bolt 1985, 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
      $512.57




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