1981 Ford F-100 Differentials & Components

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    • (0 reviews)
      # 111372865
      Ford F-100 with 9" Ring Gear with Ford Series Axle 1981, Rear Ring and Pinion Gear Set by USA Standard Gear®. USA Standard ring and pinion sets are the right choice to add confidence to your install. USA Standard Gear offers a full line...
      Direct-fit OE-quality replacement for your factory partHelps restore the proper functionality of your vehicle
      $202.73 - $241.81
    • (0 reviews)
      # mpn2412746
      Ford F-100 with 9" Ring Gear with 3.50 Ratio 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...
      Replacement eliminates driveline grinding and whining soundsDirect replacement for a proper fit
      $122.41
    • (0 reviews)
      # 68552246
      Ford F-100 with 9" Ring Gear with Ford Series Axle 1981, Rear Master Overhaul Bearing Kit by USA Standard Gear®. USA Standard Master Overhaul kits let you finish your install with confidence. This kit uses Koyo bearings and races. When...
      Uses Koyo bearings and racesExpertly crafted from premium materials
      $149.38 - $194.69
    • (0 reviews)
      # mpn2020889
      Ford F-100 with 9" Ring Gear with 31 Spline 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 tapered...
      Designed to effectively reduce frictionUltimate load handling capability
      $106.49
    • (0 reviews)
      # 531171202
      Ford F-100 1981, 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
      $138.95 - $240.95
    • (0 reviews)
      # 111372838
      Ford F-100 with 9" Ring Gear with Ford Series Axle with LM102949 Carrier Races 1981, Rear Differential Bearing Kit by USA Standard Gear®. This kit uses Koyo bearings and races along with all high quality small parts. USA Standard Gear...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $102.12
    • (0 reviews)
      # 111372841
      Ford F-100 with 9" Ring Gear with Ford Series Axle 1981, Rear Mini Spool by USA Standard Gear®. Mini spools are a low-cost traction option for vehicles looking for full-time lockup. When it comes to a top-notch replacement for your worn...
      Installs into a standard open carrier caseProvides 100% traction to both wheels at all times
      $33.51
    • (0 reviews)
      # 765114809
      Ford F-100 with 9" Ring Gear with Ford Series Axle 1981, Rear Pinion Installation Kit by USA Standard Gear®. USA Standard ring and pinion sets are the right choice to add confidence to your install. USA Standard Gear offers a full line...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $86.57
    • (0 reviews)
      # 111372913
      Ford F-100 with 9" Ring Gear with Ford Series Axle 1981, Rear Spider Gear Set by USA Standard Gear®. USA Standard gear sets are the right choice to add confidence to your install. USA Standard Gear offers a full line of gear sets for a...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $132.42 - $168.01
    • (0 reviews)
      # 111372954
      Ford F-100 with 9" Ring Gear with Ford Series Axle 1981, Rear Spool by USA Standard Gear®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...
      Provides 100% traction to both wheels at all timesNot recommended for street driven vehicles
      $112.60
    • (0 reviews)
      # 212833441
      Ford F-100 Custom / Ranger / Ranger Lariat / Ranger XLT 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
      $17.15 - $26.59
    • (0 reviews)
      # 212833447
      Ford F-100 Custom / Ranger / Ranger Lariat / Ranger XLT 1981, Complete Series™ Differential Kit by Ratech®. Designed utilizing the latest technology, this product by Ratech features premium quality and will perform better than...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $87.69 - $124.25
    • (0 reviews)
      # mpn358588472
      Ford F-100 Custom / Ranger / Ranger Lariat / Ranger XLT with 9" Ring Gear with General Motors Series Axle 1981, Differential Clutch Pack Kit by Ratech®. Designed with precision and functionality in mind, this accessory ensures...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $50.42
    • (0 reviews)
      # 212833506
      Ford F-100 Custom / Ranger / Ranger Lariat / Ranger XLT 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
      $23.20 - $47.62
    • (0 reviews)
      # 531054067
      Ford F-100 with 8.38" Ring Gear 1981, 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...
      Designed to effectively reduce frictionUltimate load handling capability
      $7.58
    • (0 reviews)
      # mpn2040421
      Ford F-100 with 9" Ring Gear 1981, Rear Differential Bearing Set by Timken®. Get optimum vehicle performance with Timken bearings. Timken manufactures ball bearings, cylindrical roller bearings, and tapered roller bearings, and all...
      Designed to effectively reduce frictionUltimate load handling capability
      $9.47
    • (0 reviews)
      # 531168963
      Ford F-100 1981, Rear Differential Pinion Pilot 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
      $21.93
    • (0 reviews)
      # mpn2054363
      Ford F-100 with 8.38" Ring Gear / with 9" Ring Gear 1981, 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...
      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
      $6.39
    • (0 reviews)
      # 531116811
      Ford F-100 with 8.38" Ring Gear 1981, 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...
      OE quality fit, performance, and reliabilityCost-effective friction management solution
      $4.13
    • (0 reviews)
      # mpn2371034
      Ford F-100 with 8.8" Ring Gear / with 9.75" Ring Gear 1981, Differential Crush Sleeves by Dorman®. A necessary item to replace when servicing the differential, Dorman’s Differential Crush Sleeve is durably built to retain optimal...
      Direct replacement for a proper fit every timeDesigned specifically for rear-wheel drive vehicles
      $2.98
    • (0 reviews)
      # 531187483
      Ford F-100 1981, 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 to ensure ultimate performance and...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $8.25 - $10.66
    • (0 reviews)
      # 1094932928
      Ford F-100 1981, 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 optimally. It is built to the original equipment...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $4.07 - $7.28
    • (0 reviews)
      # 1095063707
      Ford F-100 1981, 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 treatment technology to ensure ultimate...
      Spindle bearing and seal kitIncludes all components required to complete the repair
      $60.00 - $70.65
    • (0 reviews)
      # 531074099
      Ford F-100 1981, Differential Pinion Bearing by National®. This bearing is manufactured from high quality steel and constructed utilizing state-of-the-art computer controlled heat treatment technology to ensure ultimate performance and...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $8.80 - $16.53
    • (0 reviews)
      # 1094949876
      Ford F-100 1981, 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 the original equipment specifications...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $4.78 - $6.95
    • (0 reviews)
      # 1095026937
      Ford F-100 1981, 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. It is built to the original equipment...
      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
      $19.48 - $19.82
    • (0 reviews)
      # 531194520
      Ford F-100 1981, 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 customers in mind, this product by National will...
      Designed to increase wheel-end reliability by effectively excluding dirt, moisture, and other contaminantsA patent-pending National Dynamic Edge technology allows for maximum protection
      $7.10 - $20.29
    • (0 reviews)
      # mpn1848355976
      Ford F-100 with 9" Ring Gear with Ford Series Axle 1981, Rear Differential Pinion Pilot 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
      $21.18
    • (0 reviews)
      # mpn358588597
      Ford F-100 Custom / Ranger / Ranger Lariat / Ranger XLT with 9" Ring Gear with General Motors Series Axle 1981, Crush Sleeve 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
      $2.92
    • (0 reviews)
      # 202160201
      Ford F-100 Custom / Ranger / Ranger Lariat / Ranger XLT with 9" Ring Gear with General Motors Series Axle 1981, Differential Bearing Kit by Ratech®. Designed with precision and functionality in mind, this accessory ensures outstanding...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $63.48 - $63.80
    • (0 reviews)
      # 1148400008
      Ford F-100 Custom / Ranger / Ranger Lariat / Ranger XLT with 9" Ring Gear with General Motors Series Axle 1981, Differential Bearing Race 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
      $7.70 - $12.59
    • (0 reviews)
      # 212833435
      Ford F-100 Custom / Ranger / Ranger Lariat / Ranger XLT with 9" Ring Gear with General Motors Series Axle 1981, Differential Bearing Spacer by Ratech®. Designed with precision and functionality in mind, this accessory ensures...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $3.08 - $40.83
    • (0 reviews)
      # 212833480
      Ford F-100 Custom / Ranger / Ranger Lariat / Ranger XLT 1981, Differential Carrier Bearing Set by Ratech®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $23.16 - $45.07
    • (0 reviews)
      # 212833459
      Ford F-100 Custom / Ranger / Ranger Lariat / Ranger XLT 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
      $14.28 - $29.30
    • (0 reviews)
      # mpn358588470
      Ford F-100 Custom / Ranger / Ranger Lariat / Ranger XLT with 9" Ring Gear with General Motors Series Axle 1981, Differential Pinion Nut by Ratech®. 1-14" thread size. Fits 35-spline differentials with 1/2" ring gear bolts. Designed with...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $6.77
    • (0 reviews)
      # 206590042
      Ford F-100 Custom / Ranger / Ranger Lariat / Ranger XLT 1981, Differential Pinion Seal by Ratech®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $5.57 - $7.85
    • (0 reviews)
      # mpn358588577
      Ford F-100 Custom / Ranger / Ranger Lariat / Ranger XLT with 9" Ring Gear with General Motors Series Axle 1981, Differential Pinion Shim 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
      $11.76
    • (0 reviews)
      # 212833522
      Ford F-100 Custom / Ranger / Ranger Lariat / Ranger XLT with Dana 60 Series Axle / with Dana 70 HD Series Axle / with Dana 70 Series Axle / with Dana 70 U Series Axle 1981, Differrential Carrier Shim Set by Ratech®. Designed utilizing...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $8.41 - $9.44
    • (0 reviews)
      # mpn358588730
      Ford F-100 Custom / Ranger / Ranger Lariat / Ranger XLT with 9" Ring Gear with General Motors Series Axle 1981, Pilot Bearing Retainer Clip by Ratech®. Designed with precision and functionality in mind, this accessory ensures...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $3.43
    • (0 reviews)
      # mpn358588460
      Ford F-100 Custom / Ranger / Ranger Lariat / Ranger XLT with 9" 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...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $9.42
    • (0 reviews)
      # mpn4554624314
      Ford F-100 with 9" Ring Gear with Ford Transmission 1981, Rear Differential Carrier Gasket by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and...
      Direct OEM replacement for a proper fitEnsures reliable sealing performance
      $4.37
    • (0 reviews)
      # mpn4517168626
      Ford F-100 Custom / Ranger / Ranger Lariat / Ranger XLT with 31 Shaft Spline with Ford 9" Series Axle with 10 Bolt 1981, Air Locker by ARB®. Created to provide 100% traction on demand, without sacrificing any of your vehicle's highway...
      Differential CaseFlange Cap Assembly
      $940.50
    • (0 reviews)
      # mpn4517169008
      Ford F-100 with 35 Spline with Ford 9" Series Axle 1981, Rear Competition Edition Air Locker by ARB®. Engineered and manufactured in Australia, the competition Air Locker has been designed around the requirements of top-flight ULTRA4...
      290% increased case strengthDeeper clutch gear engagement
      $2,123.25
    • (0 reviews)
      # 503531261
      Ford F-100 with Ford 9" Series Axle 1981, 12 Point Ring Gear Bolt Kit by ARP®. The tremendous shock loads generated at launch by most any drag racing vehicle equipped with today’s sticky tire compounds or the acceleration and...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $28.52 - $65.36
    • (0 reviews)
      # mpn4515297019
      Ford F-100 with Ford 9" Series Axle 1981, 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
      $14.99
    • (0 reviews)
      # mpn4515291619
      Ford F-100 with Ford 9" Series Axle 1981, Differential Pinion Nut 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
      $4.99
    • (0 reviews)
      # mpn4515297149
      Ford F-100 with Ford 9" Series Axle 1981, 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....
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $7.99
    • (0 reviews)
      # mpn4515297058
      Ford F-100 with Ford 9" Series Axle 1981, Differential Pinion Suppport by AllStar Performance®. With Installed Races. 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
      $119.99
    • (0 reviews)
      # 1064259563
      Ford F-100 with Ford 9" Series Axle with 10 Bolt 1981, Mini Spool by AllStar Performance®. Lightweight. 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
      $29.99
    • (0 reviews)
      # 990412267
      Ford F-100 with 9" Series Axle with 10 Bolt 1981, 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)
      # 1017025041
      Ford F-100 1981, 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 advertised. Perfect...
      Precise manufacturing and high-grade materialsExceptional performance at a competitive price
      $98.99 - $128.99
    • (0 reviews)
      # 1066637510
      Ford F-100 1981, 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 other reproductive harm.
      Precise manufacturing and high-grade materialsExceptional performance at a competitive price
      $36.99 - $38.99
    • (0 reviews)
      # mpn4515297068
      Ford F-100 with Ford 9" Series Axle 1981, Ring and Pinion Installation Shim Kit with Crush Sleeve by AllStar Performance®. CA Prop 65 WARNING - This product contains chemicals known to the State of California to cause cancer, and/or...
      Precise manufacturing and high-grade materialsExceptional performance at a competitive price
      $27.99
    • (0 reviews)
      # mpn4515297067
      Ford F-100 with Ford 9" Series Axle 1981, Ring and Pinion Installation Shim Kit with Solid Spacer by AllStar Performance®. CA Prop 65 WARNING - This product contains chemicals known to the State of California to cause cancer, and/or...
      Precise manufacturing and high-grade materialsExceptional performance at a competitive price
      $37.99
    • (0 reviews)
      # 1016971758
      Ford F-100 with Ford 9" Series Axle 1981, Spool by AllStar Performance®. Replace a troublesome positive traction unit with a high quality Allstar spool. Substantially lighter than conventional carriers, spools deliver equal power to...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $137.99 - $181.99
    • (0 reviews)
      # mpn4561984826
      Ford F-100 1981, 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 this premium differential component that...
      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
      $199.64
    • (0 reviews)
      # mpn4561985213
      Ford F-100 with Ford 9" Series Axle 1981, Rear 12 Point Differential Ring Gear Bolt 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 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
      $16.65
    • (0 reviews)
      # mpn4561984605
      Ford F-100 with 31 Spline with Ford 9" Series Axle 1981, Rear Light Spool by Alloy USA®. Dominate the track or hit the trails with condidence by fine tuning your vehicle for neck-breaking speed and performance with this premium...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $155.57
    • (0 reviews)
      # mpn4561985137
      Ford F-100 with Ford 9" Series Axle 1981, Rear Third Member Housing by Alloy USA®. Dominate the track or hit the trails with condidence by fine tuning your vehicle for neck-breaking speed and performance with this premium differential...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $197.56
    • (0 reviews)
      # 1346793901
      Ford F-100 1981, Ring and Pinion Gear Set by Alloy USA®. Mounting larger diameter wheels and tires requires a gear ratio change to maintain the same performance. But even if you're not getting new skins, changing to a lower gear ratio...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $229.78 - $591.44




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