1981 Oldsmobile Custom Cruiser Differentials & Components

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    • (0 reviews)
      # 531128318
      Oldsmobile Custom Cruiser 1981, 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
      $115.44 - $198.95
    • (0 reviews)
      # 531114533
      Oldsmobile Custom Cruiser with 8.5" Ring Gear 1981, Rear Axle Differential Bearing and Seal Kit 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
      $63.91 - $106.01
    • (0 reviews)
      # mpn2412739
      Oldsmobile Custom Cruiser with 8.5" Ring Gear 1981, 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...
      Replacement eliminates driveline grinding and whining soundsRobust steel construction ensures durability for years of service
      $104.95
    • (0 reviews)
      # 202159322
      Oldsmobile Custom Cruiser with General Motors Series Axle 1981, Basic Series Differential Kit 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
      $15.40 - $15.44
    • (0 reviews)
      # 202159395
      Oldsmobile Custom Cruiser with General Motors Series Axle 1981, Complete Series™ Differential Kit 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
      $78.34 - $79.71
    • (0 reviews)
      # mpn358588584
      Oldsmobile Custom Cruiser with 8.5" Ring Gear with General Motors Series Axle 1981, Deluxe Series Differential Kit With Pinion 10-Bolt 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
      $112.14
    • (0 reviews)
      # 202159339
      Oldsmobile Custom Cruiser with General Motors Series Axle 1981, Differential Installation Kit 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
      $36.55 - $39.82
    • (0 reviews)
      # 531156728
      Oldsmobile Custom Cruiser 1981, 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
      $2.86 - $3.07
    • (0 reviews)
      # mpn2377088
      Oldsmobile Custom Cruiser with 7.5" Ring Gear / with 8.5" Ring Gear / with 8.75" Ring Gear 1981, 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
      $1.74
    • (0 reviews)
      # mpn1074426
      Oldsmobile Custom Cruiser with 8.5" Ring Gear with GM Series Axle 1981, Rear Axle Differential Bearing by National®. This bearing is manufactured from high quality steel and constructed utilizing state-of-the-art computer controlled...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $7.78
    • (0 reviews)
      # mpn1074425
      Oldsmobile Custom Cruiser with 8.5" Ring Gear with GMC Transmission 1981, 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...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $4.16
    • (0 reviews)
      # 531063571
      Oldsmobile Custom Cruiser with 8.5" Ring Gear with GM Series Axle 1981, 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...
      Spindle bearing and seal kitIncludes all components required to complete the repair
      $73.80 - $88.29
    • (0 reviews)
      # 531055003
      Oldsmobile Custom Cruiser with 8.5" Ring Gear with GM Series Axle 1981, Rear Differential Pinion Bearing by National®. This bearing is manufactured from high quality steel and constructed utilizing state-of-the-art computer controlled...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $8.07 - $10.74
    • (0 reviews)
      # 531173431
      Oldsmobile Custom Cruiser with 8.5" Ring Gear with GM Series Axle 1981, 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...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $4.34 - $5.68
    • (0 reviews)
      # mpn1179154
      Oldsmobile Custom Cruiser with 8.5" Ring Gear with GMC Transmission 1981, 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...
      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
      $20.11
    • (0 reviews)
      # mpn1307881
      Oldsmobile Custom Cruiser with 8.5" Ring Gear with GM Series Axle 1981, 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...
      National oil seals are recognized worldwide for their quality and reliable performance for every type of repair.Design Type: Spring Loaded; Multi-Lip
      $5.30
    • (0 reviews)
      # mpn358588599
      Oldsmobile Custom Cruiser with 7.5" Ring Gear with General Motors Series Axle 1981, 0.620" 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
      $3.83
    • (0 reviews)
      # 202159419
      Oldsmobile Custom Cruiser with General Motors Series Axle 1981, Differential Bearing Kit 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
      $51.45 - $55.04
    • (0 reviews)
      # 202159371
      Oldsmobile Custom Cruiser with General Motors Series Axle 1981, Differential Bearing Spacer 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
      $12.62
    • (0 reviews)
      # 202159332
      Oldsmobile Custom Cruiser with General Motors Series Axle 1981, Differential Carrier Bearing Set by Ratech®.
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $23.34 - $26.08
    • (0 reviews)
      # 202159401
      Oldsmobile Custom Cruiser with General Motors Series Axle 1981, Differential Pinion Bearing 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
      $11.89 - $19.11
    • (0 reviews)
      # mpn358588466
      Oldsmobile Custom Cruiser with 7.5" Ring Gear with General Motors Series Axle 1981, Differential Pinion Nut 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
      $2.62
    • (0 reviews)
      # mpn358588647
      Oldsmobile Custom Cruiser with 8.5" Ring Gear with General Motors Series Axle 1981, Differential Pinion Seal 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
      $4.59
    • (0 reviews)
      # mpn358588440
      Oldsmobile Custom Cruiser with 8.5" Ring Gear with General Motors Series Axle 1981, Differrential Carrier Shim Set 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
      $23.83
    • (0 reviews)
      # mpn358588439
      Oldsmobile Custom Cruiser with 7.5" Ring Gear with General Motors Series Axle 1981, Pinion Shim Set 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
      $9.53
    • (0 reviews)
      # mpn358588458
      Oldsmobile Custom Cruiser with 7.5" Ring Gear / with 8.5" Ring Gear with General Motors Series Axle 1981, Ring Gear Bolt Set 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
      $14.72
    • (0 reviews)
      # 202159359
      Oldsmobile Custom Cruiser with General Motors Series Axle 1981, Smart Sleeve 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
      $9.62
    • (0 reviews)
      # 503478127
      Oldsmobile Custom Cruiser with 2.73 and Up Gear Ratio with GM 8.5" Series Axle / with GM 8.625" Series Axle with 10 Bolt 1981, A-Line Ring and Pinion Gear Set by Motive Gear®. Motive Gear stock performance ring and pinions are excellent...
      Quiet operationComputer controlled heat treatment
      $146.07 - $156.44
    • (0 reviews)
      # mpn4517168181
      Oldsmobile Custom Cruiser with 2.73 and Up Gear Ratio with GM 8.5" Series Axle with 10 Bolt 1981, 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)
      # 503526398
      Oldsmobile Custom Cruiser with 2.73 and Up Gear Ratio with GM 8.5" Series Axle / with GM 8.625" Series Axle with 10 Bolt 1981, Performance Ring and Pinion Gear Set by Motive Gear®. Motive Gear Performance ring and pinions are perfect...
      Central contact patternCNC start to finish
      $210.38 - $265.28
    • (0 reviews)
      # 503504496
      Oldsmobile Custom Cruiser with 2.73 and Up Gear Ratio with GM 8.5" Series Axle / with GM 8.625" Series Axle with 10 Bolt 1981, Ring and Pinion Gear Set by Motive Gear®. Motive Gear stock performance ring and pinions are excellent...
      Quiet operationComputer controlled heat treatment
      $199.86 - $251.95
    • (0 reviews)
      # mpn4517168100
      Oldsmobile Custom Cruiser with 2.73 to 5.13 Gear Ratio with GM 8.5" Series Axle with 10 Bolt with 1.20" Axle Shaft Diameter 1981, Detroit Locker™ Rear Differential by Eaton®. Location: Rear. The Detroit Locker is a 100%-automatic...
      100% automatic locking - no driver action neededProvides maximum amount of traction to both wheel ends
      $762.26
    • (0 reviews)
      # 1028911993
      Oldsmobile Custom Cruiser with 10 Bolt 1981, Detroit Truetrac™ Rear Differential by Eaton®. Location: Rear. The Detroit Truetrac is a helical-gear style performance differential that maximizes wheel traction and enhances driving and...
      Helical-style pinion gearsLimited-slip operation
      $462.64 - $496.63
    • (0 reviews)
      # 1029170640
      Oldsmobile Custom Cruiser with 10 Bolt 1981, Posi™ Rear Differential by Eaton®. Location: Rear. The Eaton Posi limited-slip differential prevents wheel slip before it can get started. To do that, carbon disc clutch packs, preloaded by...
      Superior rebuildable designRace-bred carbon friction discs
      $478.79 - $487.18
    • (0 reviews)
      # mpn4517168131
      Oldsmobile Custom Cruiser 5.0L with 28 Spline with 2.73 and Up Gear Ratio with GM 8.5" Series Axle with 10 Bolt 1981, ECTED Max™ Rear Limited Slip Differential by Auburn Gear®. With Selectable Full Locker. Location: Rear. The ECTED...
      Expertly crafted from superior materialsProvides exceptional reliability
      $740.21
    • (0 reviews)
      # 1029337558
      Oldsmobile Custom Cruiser 5.0L with 10 Bolt 1981, HP™ Rear Limited Slip Differential by Auburn Gear®. Location: Rear. High Performance. Auburn Gear’s flagship limited-slip differential gives you smooth torque-sensing operation with...
      Expertly crafted from superior materialsProvides exceptional reliability
      $416.16
    • (0 reviews)
      # 1029174495
      Oldsmobile Custom Cruiser 5.0L with 10 Bolt 1981, Pro™ Rear Limited Slip Differential by Auburn Gear®. Location: Rear. Turns your torque up another notch, offering an even higher bias ratio and faster sensing reaction than HP for the...
      Expertly crafted from superior materialsProvides exceptional reliability
      $474.91 - $518.98
    • (0 reviews)
      # 503641191
      Oldsmobile Custom Cruiser with Open Differential with GM 8.5" Series Axle 1981, Lock Right Locker by Powertrax®. Powertrax Lock-Right performance lockers’ straight-line performance is equal to a solid spool axle, yet they...
      Brute force devices for rugged applicationsReplacement of differential case not required
      $336.26
    • (0 reviews)
      # 503500277
      Oldsmobile Custom Cruiser with Open Differential with GM 8.5" Series Axle 1981, No-Slip Traction System by Powertrax®. For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet...
      Extreme Traction PerformanceEnables a 2 Wheel Drive to outperform a 4 Wheel Drive in poor traction conditions
      $443.21
    • (0 reviews)
      # mpn4517168259
      Oldsmobile Custom Cruiser with 28 Spline with 2.73 and Up Gear Ratio with GM 8.5" Series Axle 1981, Open Grip LS Traction System by Powertrax®. The Powertrax Grip LS, is a clutch-type differential in a forged steel case. This...
      Comes Fully AssembledCarbon Fiber and Steel Friction Plate Technology
      $443.35
    • (0 reviews)
      # 503534511
      Oldsmobile Custom Cruiser with GM 8.5" Series Axle / with GM 8.625" Series Axle with 10 Bolt 1981, Street Gear Ring and Pinion Gear Set by Richmond®. Richmond Gear ring and pinions are perfect for any vehicle where performance and...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $221.45 - $277.95
    • (0 reviews)
      # 503393440
      Oldsmobile Custom Cruiser with GM 8.5" Series Axle with 10 Bolt 1981, 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...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $72.92 - $103.58
    • (0 reviews)
      # mpn4517165997
      Oldsmobile Custom Cruiser with GM 8.5" Series Axle with 10 Bolt 1981, Differential Gear Installation Kit 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
      $59.93
    • (0 reviews)
      # 503490327
      Oldsmobile Custom Cruiser with GM 8.5" Series Axle with 10 Bolt 1981, Differential Master Bearing Kit 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
      $91.57 - $108.26
    • (0 reviews)
      # 503642395
      Oldsmobile Custom Cruiser with GM 8.5" Series Axle with 10 Bolt 1981, 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
      $46.56 - $59.74
    • (0 reviews)
      # 503533464
      Oldsmobile Custom Cruiser with GM 8.5" Series Axle with 10 Bolt 1981, 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...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $115.16 - $125.48
    • (0 reviews)
      # 503657105
      Oldsmobile Custom Cruiser with 28 Spline with Open Differential with 10 Bolt 1981, 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...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $81.49
    • (0 reviews)
      # 503347610
      Oldsmobile Custom Cruiser 1981, 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...
      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)
      # 503557397
      Oldsmobile Custom Cruiser with 8.5" Series Axle with 10 Bolt 1981, 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
      $148.35 - $149.79
    • (0 reviews)
      # mpn4517168046
      Oldsmobile Custom Cruiser with GM 8.5" Series Axle 1981, Rear Differential Master Overhaul Kit by Spicer®. Location: Rear. Genuine Spicer overhaul kit include all the latest production upgrades, so the parts you’re installing are as...
      Save Money: Buying components separately can be costly and cumbersomeSave Downtime: Be ready to perform a repair or overhaul as you need it
      $171.26
    • (0 reviews)
      # mpn4517170293
      Oldsmobile Custom Cruiser with GM 8.5" Series Axle 1981, Rear Differential Master Overhaul Kit by Alloy USA®. Location: Rear. 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
      $179.48
    • (0 reviews)
      # mpn4517168652
      Oldsmobile Custom Cruiser with GM 8.5" Series Axle with 10 Bolt 1981, Differential Gear Installation Kit by Richmond®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $27.10
    • (0 reviews)
      # mpn4517166520
      Oldsmobile Custom Cruiser with GM 8.5" Series Axle with 10 Bolt 1981, 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 performance...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $157.24
    • (0 reviews)
      # 503496239
      Oldsmobile Custom Cruiser with GM 8.5" Series Axle with 10 Bolt 1981, Differential Spool Bearing Kit by Richmond®. Richmond Gear Differential Installation Kits are a must have when overhauling an axle or replacing a ring & pinion set....
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $34.03 - $50.31
    • (0 reviews)
      # 503405228
      Oldsmobile Custom Cruiser with Open Differential 1981, Mini Spool 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...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $100.35
    • (0 reviews)
      # 503556504
      Oldsmobile Custom Cruiser with 45 Degree Pressure Angle Axles with GM 8.5" Series Axle with 10 Bolt with C-Clip Eliminator Kit 1981, Rear Spool by Richmond®. Location: Rear. Dominate the track or hit the trails with confidence by fine...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $195.90 - $202.35
    • (0 reviews)
      # 1028971074
      Oldsmobile Custom Cruiser 1981, 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
      $17.31 - $21.36
    • (0 reviews)
      # 503622458
      Oldsmobile Custom Cruiser with 10 Bolt 1981, 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
      $2.81 - $3.39
    • (0 reviews)
      # mpn4517167740
      Oldsmobile Custom Cruiser 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
      $3.75
    • (0 reviews)
      # 503320062
      Oldsmobile Custom Cruiser 1981, 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
      $2.65 - $2.94




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