1966 Mercury Comet Differentials & Components

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    • (0 reviews)
      # mpn2412746
      Mercury Comet with 3.50 Ratio with 9" Ring Gear 1966, 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....
      Replacement eliminates driveline grinding and whining soundsDirect replacement for a proper fit
      $109.02
    • (0 reviews)
      # 531092417
      Mercury Comet 1966, 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 all...
      Designed to effectively reduce frictionUltimate load handling capability
      $97.68 - $98.63
    • (0 reviews)
      # mpn1848279419
      Mercury Comet with Ford 9" HD Ring Gear 1966, Rear Axle Differential Bearing by National®. With Cup and Cone. Cone Bore: 1.78". Cone Length: 0.781". Cup Bore: 3.0625". This bearing is manufactured from high quality steel and constructed...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $10.42
    • (0 reviews)
      # mpn358588464
      Mercury Comet Base GM 8" Axle 1966, Differential Installation Kit by Ratech®. Made in USA. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal...
      OEM design and manufacturing ensure top qualityCrafted from prime materials for long-term service
      $38.48
    • (0 reviews)
      # 531123226
      Mercury Comet 1966, 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 premium design,...
      Designed to effectively reduce frictionUltimate load handling capability
      $7.75 - $17.55
    • (0 reviews)
      # 531064465
      Mercury Comet 1966, 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 feature premium...
      Designed to effectively reduce frictionUltimate load handling capability
      $8.89 - $9.98
    • (0 reviews)
      # 531194752
      Mercury Comet 1966, Rear Differential Pinion Bearing by Timken®. Get optimum vehicle performance with Timken bearings. Timken manufactures ball bearings, cylindrical roller bearings, and tapered roller bearings, and all feature premium...
      Designed to effectively reduce frictionUltimate load handling capability
      $7.58 - $19.54
    • (0 reviews)
      # 531088331
      Mercury Comet 1966, 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
      $21.73 - $22.54
    • (0 reviews)
      # 531125193
      Mercury Comet 1966, 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 liquids,...
      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
      $6.15 - $6.23
    • (0 reviews)
      # 531074457
      Mercury Comet 1966, 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 durable part...
      OE quality fit, performance, and reliabilityCost-effective friction management solution
      $4.29 - $7.22
    • (0 reviews)
      # mpn2006957
      Mercury Comet with 7.5" Ring Gear / with 7.75" Ring Gear / with 8" Ring Gear with WCY Series Axle / with WEZ Series Axle 1966, Rear Outer Differential Pinion Race by Timken®. Seal OD: 2.66"/3.17". Precision manufactured using premium...
      OE quality fit, performance, and reliabilityCost-effective friction management solution
      $3.63
    • (0 reviews)
      # mpn2371034
      Mercury Comet with 9" Ring Gear with 28 Spline Axle Shaft 1966, 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...
      Direct replacement for a proper fit every timeDesigned specifically for rear-wheel drive vehicles
      $2.77
    • (0 reviews)
      # 531132133
      Mercury Comet 1966, 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 technology to ensure ultimate...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $7.28 - $19.50
    • (0 reviews)
      # 531198786
      Mercury Comet 1966, 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 the original equipment...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $3.67 - $7.55
    • (0 reviews)
      # 531115985
      Mercury Comet 1966, Rear Differential Pinion Repair Sleeve by National®. Outer Diameter: 2.156". Width: 0.563". This part is manufactured by one of the most trusted names in the automotive industry to keep your vehicle perform...
      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
      $19.97
    • (0 reviews)
      # 531117383
      Mercury Comet 1966, Rear 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 oil seals are recognized worldwide for their quality and reliable performance for every type of repair.Design Type: Spring Loaded; Multi-Lip
      $6.82 - $7.16
    • (0 reviews)
      # 503467135
      Mercury Comet 1966, Rear Differential Carrier by Motive Gear®. Without Internal Kit. Carrier Type: Posi. All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $204.46 - $214.03
    • (0 reviews)
      # 503441547
      Mercury Comet 1966, Rear 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 never use recycled...
      Central contact patternCNC start to finish
      $203.94 - $718.77
    • (0 reviews)
      # 503318434
      Mercury Comet with Ford 9" Series Axle with Dual Drilled for 1/2" Ring Gear Bolts / with Dual Drilled for 7/16" Ring Gear Bolts with 10 Bolt 1966, Rear Pro Gear Ring and Pinion Gear Set by Motive Gear®. Type: Lightweight. Motive Gear...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $341.48 - $561.60
    • (0 reviews)
      # 126498298
      Mercury Comet with Ford 9" Series Axle with 10 Bolt 1966, Rear 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...
      Quiet operationComputer controlled heat treatment
      $193.74 - $245.52
    • (0 reviews)
      # 503333407
      Mercury Comet Base 1966, Pro™ Rear Differential by Auburn Gear®. Type: Limited Slip. Turns your torque up another notch, offering an even higher bias ratio and faster sensing reaction than HP for the very best in controlled power...
      Expertly crafted from superior materialsProvides exceptional reliability
      $488.38
    • (0 reviews)
      # 503694342
      Mercury Comet 1966, Grip LS Traction System by Powertrax®. Type: Open. The Powertrax Grip LS, is a clutch-type differential in a forged steel case. This differential uses a set of carbon clutch discs to provide traction as needed, is...
      Comes Fully AssembledCarbon Fiber and Steel Friction Plate Technology
      $389.00
    • (0 reviews)
      # 503609401
      Mercury Comet with Ford 9" Series Axle 1966, Grip Lok Traction System by Powertrax®. Type: Open. If you are looking for the ultimate in traction, the Powertrax Grip Lok can handle the torque of engines producing up to 550hp. It combines...
      Comes Fully AssembledTraction Adding Differential Technology
      $515.54 - $563.35
    • (0 reviews)
      # 503398017
      Mercury Comet 1966, Grip Pro Traction System by Powertrax®. The Powertrax Grip PRO is a gear driven limited slip differential designed to be among the strongest and most durable in the industry. It combines the smooth operation of a...
      Comes Fully AssembledDelivers Progressive and Variable Traction
      $453.13 - $525.00
    • (0 reviews)
      # mpn359112073
      Mercury Comet with Open Differential with 28 Spline / with 31 Spline with Ford 8" Series Axle / with Ford 9" Series Axle 1966, Lock Right Locker by Powertrax®. Powertrax Lock-Right performance lockers’ straight-line performance is...
      Brute Force Devices For Rugged ApplicationsReplacement Of Differential Case Not Required
      $301.08
    • (0 reviews)
      # 503486123
      Mercury Comet with Open Differential 1966, 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. It...
      Extreme Traction PerformanceEnables a 2 Wheel Drive to outperform a 4 Wheel Drive in poor traction conditions
      $450.54
    • (0 reviews)
      # 503633281
      Mercury Comet with Ford 9" Series Axle 1966, Ring and Pinion Gear Set by Precision Gear®. Dominate the track or hit the trails with condidence by fine tuning your vehicle for neck-breaking speed and performance with this premium...
      Allows for getting superior traction on just about any brutal terrainAdds more reliability and consistency to your drivetrain
      $194.06 - $467.72
    • (0 reviews)
      # 503481534
      Mercury Comet with Ford 9" Series Axle with 10 Bolt 1966, Rear Pro Gear Ring and Pinion Gear Set by Richmond®. Richmond Gear ring and pinions are perfect for any vehicle where performance and durability matters. Made from first-run...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $359.45 - $483.61
    • (0 reviews)
      # 503592364
      Mercury Comet 1966, Rear Street Gear Ring and Pinion Gear Set by Richmond®. Richmond Gear ring and pinions are perfect for any vehicle where performance and durability matters. Made from first-run steel, never recycled material,...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $214.67 - $447.59
    • (0 reviews)
      # 503524133
      Mercury Comet 1966, 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 rigid...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $32.91 - $34.13
    • (0 reviews)
      # 126893165
      Mercury Comet 1966, Rear 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 rigid quality...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $76.57 - $107.08
    • (0 reviews)
      # 503304115
      Mercury Comet with Ford 9" Series Axle 1966, 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 with this premium...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $114.54 - $281.28
    • (0 reviews)
      # 503639448
      Mercury Comet 1966, 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 of company products undergo rigid...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $94.88 - $119.01
    • (0 reviews)
      # 503321587
      Mercury Comet with Ford 8" Series Axle 1966, 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 this premium...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $139.26 - $145.99
    • (0 reviews)
      # 503387298
      Mercury Comet with 9" Series Axle with 10 Bolt 1966, Rear Spool by Motive Gear®. Type: Lightweight. 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
      $129.97 - $138.31
    • (0 reviews)
      # 88289430
      Mercury Comet 1966, 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 premium differential gear...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $32.55 - $33.48
    • (0 reviews)
      # 503398478
      Mercury Comet 3.3L / 4.7L / 6.4L / 7.0L with Ford 9" Series Axle with 10 Bolt 1966, Rear Differential Spool Bearing Kit by Richmond®. Richmond Gear Differential Installation Kits are a must have when overhauling an axle or replacing a...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $34.03 - $41.42
    • (0 reviews)
      # 503438507
      Mercury Comet 3.3L / 4.7L / 6.4L / 7.0L with Open Differential with Ford 9" Series Axle 1966, Rear Mini Spool 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
      $38.46
    • (0 reviews)
      # 503552589
      Mercury Comet with Ford 9" Series Axle 1966, Rear 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 component that...
      Outstanding design and state of the art manufacturing techniquesExtensive testing ensures uncompromising reliability
      $195.90 - $225.55
    • (0 reviews)
      # mpn2151980422
      Mercury Comet with 9" Series Axle with 10 Bolt 1966, Differential Carrier Shim Kit by Motive Gear®. With Solid Spacer. 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
      $24.02
    • (0 reviews)
      # mpn2151979862
      Mercury Comet with 8" Series Axle 1966, 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 undergo...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $2.51
    • (0 reviews)
      # mpn1578520850
      Mercury Comet with 8" Series Axle 1966, Differential Pinion Nut 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
      $4.53
    • (0 reviews)
      # mpn2151980628
      Mercury Comet with 2 Pinion Gear with Ford 9" Series Axle 1966, 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...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $14.09
    • (0 reviews)
      # 503319347
      Mercury Comet 1966, 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 quality...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $18.82 - $34.00
    • (0 reviews)
      # mpn2151979928
      Mercury Comet with AMC 20 Series Axle / with Ford 8" Series Axle / with Ford 9" Series Axle 1966, Differential Ring Gear Bolt by Motive Gear®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $2.79
    • (0 reviews)
      # mpn2151980421
      Mercury Comet with Ford 8.8" Series Axle / with Ford 9" Series Axle 1966, Differential Side Bearing Spacer by Motive 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
      $10.35
    • (0 reviews)
      # mpn2151979647
      Mercury Comet with Ford 9" Series Axle 1966, Rear Differential Clutch 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...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $76.54
    • (0 reviews)
      # mpn2765186632
      Mercury Comet with 8" Series Axle 1966, Rear 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...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $6.65
    • (0 reviews)
      # 503299523
      Mercury Comet 1966, Rear Differential Pinion Support O-Ring 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...
      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
      $3.79 - $4.31
    • (0 reviews)
      # 503414455
      Mercury Comet Base 1966, 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 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
      $116.04
    • (0 reviews)
      # 503547026
      Mercury Comet with 31 Spline with Ford 9" Series Axle 1966, Rear Differential Locker Pin and Spring Kit by Aussie Locker®. Dominate the track or hit the trails with condidence by fine tuning your vehicle for neck-breaking speed and...
      High quality at an affordable priceExpertly made from premium materials
      $35.40 - $365.79
    • (0 reviews)
      # mpn470335172
      Mercury Comet with 31 Spline with Ford 9" Series Axle 1966, Rear Differential Locker Pin and Spring Kit by Aussie Locker®. Dominate the track or hit the trails with condidence by fine tuning your vehicle for neck-breaking speed and...
      High quality at an affordable priceExpertly made from premium materials
      $35.40
    • (0 reviews)
      # mpn2530910014
      Mercury Comet with 4 Pinion Gear with Ford 9" Series Axle 1966, 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...
      High quality at an affordable priceExpertly made from premium materials
      $27.99
    • (0 reviews)
      # 88289176
      Mercury Comet 1966, Differential Bearing 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 premium differential component that delivers...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $123.74 - $137.90
    • (0 reviews)
      # mpn358498257
      Mercury Comet with 2 Pinion Gear with Ford 9" Series Axle 1966, Differential Pinion Shaft 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
      $15.75
    • (0 reviews)
      # 503618325
      Mercury Comet with Ford 9" Series Axle with 10 Bolt 1966, Rear 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...
      Quiet operationComputer controlled heat treatment
      $140.88 - $165.16
    • (0 reviews)
      # 503408206
      Mercury Comet with 3.250" Carrier Bore 1966, Rear Third Member Case by Spicer®. Wherever limits are tested, Dana is there with products engineered to meet the needs of off-roaders, racers, and more. We offer Spicer parts designed to...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $264.99 - $303.63
    • (0 reviews)
      # 503548278
      Mercury Comet with Factory Pinion Support with 2.891" Race Diameter with Ford 9" Series Axle 1966, Differential Pinion Bearing Kit by Motive Gear®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $66.60 - $69.56
    • (0 reviews)
      # mpn466401692
      Mercury Comet with Ford 8" Series Axle 1966, Rear Differential Master Overhaul Kit by Spicer®. Genuine Spicer overhaul kit include all the latest production upgrades, so the parts you’re installing are as good or better than the parts...
      Save Money: Buying components separately can be costly and cumbersomeSave Downtime: Be ready to perform a repair or overhaul as you need it
      $146.17
    • (0 reviews)
      # mpn466401691
      Mercury Comet with Ford 8" Series Axle 1966, Rear Differential Standard Bearing Kit by Spicer®. Remember - not all bearings are created equal. Choose Spicer axle bearing kits for just the right repair. Each kit comes complete with...
      Highest quality mix of bearings, cups, and cones for performance you can count onPremium oil seals to keep lube in and dust and road grime out
      $128.19




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