1981 Ford Thunderbird Differentials
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AllStar Performance®Mini SpoolFord Thunderbird with 10 Bolt, Ford 8.8" Series Axle 1981, Mini Spool by AllStar Performance®. Drive with confidence and have the edge with AllStar Performance. With such a ground-breaking design and elaborate development, you’ll...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$99.99 - GearFX®HS Series Rear GearFord Thunderbird 1981, HS Series Rear Gear by GearFX®. Racing / Pro-Touring Ford Racing 9 Inch Gear. Light Weight Ford Racing Investment Cast Case. With 31 Spline TrueTrac. GearFX's Ford 9 inch HS Rear Gear is built using the Ford...Made using advanced technologies for longer operationEngineered to withstand the most demanding conditions$3,495.95
- GearFX®HS Series Third Member Center SectionFord Thunderbird 1981, HS Series Third Member Center Section by GearFX®. GearFX’s HS Rear Gear is built using the Racing Investment Cast bearing case. This case is ~4.5lbs lighter than the standard Nodular case GearFX use in all of N...1350 Ultra Performance YokeTIMKEN Bearings$3,495.95 - $3,579.95
- GearFX®N Series Rear GearFord Thunderbird 1981, N Series Rear Gear by GearFX®. Ratio: 3.25. Racing / Pro-Touring Ford SVO 9 Inch Gear Genuine Ford Svo Nodular Iron "N" Case. With 31 Spline TrueTrac. GearFX's Ford SVO Nodular 9 Inch rear gear assemblies are...Made using advanced technologies for longer operationEngineered to withstand the most demanding conditions$2,756.90
- GearFX®Rear Gear CarrierFord Thunderbird 1981, Rear Gear Carrier by GearFX®. 3.250" Bearing Rear Gear Iron Case. GearFX has brought back the original Ford SVO 9 Inch Big Bearing (3.250") Nodular Iron case. These cases were the mainstay in NASCAR Racing for...Chrome-moly bearing caps retained by socket head cap screws that exceed aircraft grade 8 specificationsSpot faced stud holes prevent lubricant leaks and damaged mounting surfaces$419.95
- Motive Gear®Performance Rear Ring and Pinion Gear SetFord Thunderbird with 10 Bolt, Ford 7.50" Series Axle 1981, Performance Rear 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...Central contact patternCNC start to finish$411.35
- Motive Gear®Performance Rear Ring and Pinion Gear SetFord Thunderbird with 10 Bolt with Ford 7.50" Series Axle 1981, Performance Rear 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...Central contact patternCNC start to finish$411.35
- PCE®Axle Housing to Third Member Stud KitFord Thunderbird 1981, Axle Housing to Third Member Stud Kit by PCE®. Upgrade your prized possession with extremely durable high performance axle shafts and components designed to maintain the high level of toughness and rigidity needed...Expertly Crafted from the highest grade materialsDesigned with breakthrough technology$57.80
- Speedmaster®Heavy-Duty Third Member Differential CenterFord Thunderbird with Ford 9" Series Axle 1981, Heavy-Duty Third Member Differential Center by Speedmaster®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of...Created by professionals to meet your requirementsSuperior longevity and dependability$1,320.00 - $1,745.00
- Speedmaster®Pro™ Heavy-Duty Third Member Differential CenterFord Thunderbird with Ford 9" Series Axle 1981, Pro™ Heavy-Duty Third Member Differential Center by Speedmaster®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme...Created by professionals to meet your requirementsSuperior longevity and dependability$1,380.00 - $1,530.00
- Speedmaster®TorqueWorm™ Heavy-Duty Third Member Differential CenterFord Thunderbird with Ford 9" Series Axle 1981, TorqueWorm™ Heavy-Duty Third Member Differential Center by Speedmaster®. This premium product is the best way to go for those looking for the highest quality replacement that offers...Created by professionals to meet your requirementsSuperior longevity and dependability$1,635.00 - $1,790.00
- Speedmaster®TorqueWorm™ Limited Slip DifferentialFord Thunderbird 1981, TorqueWorm™ Limited Slip Differential by Speedmaster®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and...Created by professionals to meet your requirementsSuperior longevity and dependability$378.40 - $1,428.60
- USA Standard Gear®Rear Ring and Pinion Gear SetFord Thunderbird with 7.5" Ring Gear, Ford Series Axle 1981, Rear Ring and Pinion Gear Set by USA Standard Gear®. Designed utilizing the latest technology, this product features premium quality and will perform better than advertised....Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$279.46 - $348.65
- Yukon Gear & Axle®Rear Differential Bearing Installation KitFord Thunderbird with Ford 7.50" Series Axle 1981, Rear Differential Bearing Installation Kit by Yukon Gear & Axle®. With Timken Bearings and Races. Dominate the track or hit the trails with confidence by fine tuning your vehicle for...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$199.89
- SKF®Rear Differential BearingFord Thunderbird with 7.5" Ring Gear 1981, Rear Differential Bearing by SKF®. Do you feel shaking or shuddering when you engage the clutch; hear grinding noise when you shift gears? Does your engine race without an increase in road...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$6.08
- Dorman®OE Solutions™ Rear Differential Bearing KitFord Thunderbird with 7.50" Ring Gear 1981, OE Solutions™ Rear Differential Bearing Kit by Dorman®. Do you hear a humming or growling sound as you drive, or a clicking or clunking noise when cornering? If so, your vehicle may need...OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price$157.67
- Yukon Gear & Axle®Rear Differential Mini Installation KitFord Thunderbird with Ford 7.50" Series Axle 1981, Rear Differential Mini Installation Kit by Yukon Gear & Axle®. Yukon Mini installation kits are a low cost solution for gear changes in newer vehicles where the bearings can be reused...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$47.29
- Yukon Gear & Axle®Rear Differential Pinion Installation KitFord Thunderbird with Ford 7.50" Series Axle 1981, Rear Differential Pinion Installation Kit by Yukon Gear & Axle®. Yukon Pinion installation kits are a terrific solution for gear installation on lower mileage vehicles where the carrier...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$166.89
- Yukon Gear & Axle®Rear Spider Gear SetFord Thunderbird with Ford 7.50" Series Axle 1981, Rear Spider Gear Set by Yukon Gear & Axle®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with this premium...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$199.89
- Yukon Gear & Axle®Rear Standard Open Carrier CaseFord Thunderbird with Ford 7.50" Series Axle 1981, Rear Standard Open Carrier Case by Yukon Gear & Axle®. 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$499.89
- ACDelco®Gold™ Differential Pinion RaceFord Thunderbird 1981, Gold™ Differential Pinion Race by ACDelco®. Designed utilizing the latest technology, this product features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$9.61 - $13.39Save: 15%$8.17 - $11.38
- ACDelco®Professional™ Differential Pinion BearingFord Thunderbird 1981, Professional™ Differential Pinion Bearing by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your vehicle...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$12.76 - $19.39Save: 15%$10.84 - $16.48
- Richmond®Differential Gear Installation KitFord Thunderbird with Ford 7.50" Series Axle 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 performance with this...Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability$42.41
- Motive Gear®Differential Gear Installation KitFord Thunderbird with GM 7.5" Series Axle 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 facilities. All of company...Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best$60.53
- Motive Gear®Rear Differential Carrier Gear KitFord Thunderbird with 10 Bolt, Ford 7.50" Series Axle 1981, Rear 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...Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best$157.53
- Motive Gear®Rear Differential Master Bearing KitFord Thunderbird with 10 Bolt, GM 7.5" Series Axle 1981, Rear 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...Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best$136.90 - $170.98
- Motive Gear®Rear Differential Super Bearing KitFord Thunderbird with 10 Bolt, GM 7.5" Series Axle 1981, Rear 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...Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best$177.39 - $221.74
- Ratech®Basic Series Differential KitFord Thunderbird with 7.5" Ring Gear, GM 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$17.04
- Ratech®Differential Bearing KitFord Thunderbird with GM 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 perfect deal for your...OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service$28.99 - $66.35
- Ratech®Differential Installation KitFord Thunderbird with GM 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 perfect deal for your...OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service$38.80 - $44.13
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1981 Ford Thunderbird Models
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