1966 Mercury Comet Differentials & Components

Show items:
Sort by:
    • (0 reviews)
      # mpn2412746
      Mercury Comet with 9" Ring Gear with 3.50 Ratio 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
      $122.41
    • (0 reviews)
      # 531061854
      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
      $94.65 - $102.46
    • (0 reviews)
      # mpn358588464
      Mercury Comet Base with 8" Ring Gear with General Motors Series Axle 1966, Differential Installation Kit 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
      $32.19
    • (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
      $7.58 - $16.88
    • (2 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
      $8.70 - $9.78
    • (0 reviews)
      # 531063569
      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
      $7.28 - $18.96
    • (0 reviews)
      # 531055476
      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
      $21.93 - $26.63
    • (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
      $6.39 - $6.48
    • (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
      $4.13 - $7.50
    • (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®. Precision manufactured using premium materials and made by...
      OE quality fit, performance, and reliabilityCost-effective friction management solution
      $3.67
    • (0 reviews)
      # mpn2371034
      Mercury Comet with 9" Ring Gear with 28 Spline Axle Shaft 1966, 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)
      # mpn1362498
      Mercury Comet Tremec Transmission 1966, Multi Purpose 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...
      National oil seals are recognized worldwide for their quality and reliable performance for every type of repair.Design Type: Spring Loaded; Single-Lip
      $5.84
    • (0 reviews)
      # mpn1848279419
      Mercury Comet with 9" Ring Gear with Ford HD Series Axle 1966, Rear Axle Differential Bearing Set With Cup and Cone by National®. This bearing is manufactured from high quality steel and constructed utilizing state-of-the-art computer...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $11.09
    • (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
      $7.22 - $20.16
    • (0 reviews)
      # 531104611
      Mercury Comet 1966, 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 treatment technology to ensure ultimate...
      Premium bearing design matches OEM specificationsPrecision manufactured using premium-grade steel for outstanding durability and performance
      $21.18 - $22.21
    • (0 reviews)
      # 531165870
      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
      $3.64 - $7.50
    • (0 reviews)
      # 531079749
      Mercury Comet 1966, Rear 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
      $19.82
    • (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
      $7.01 - $7.10
    • (0 reviews)
      # mpn4520787122
      Mercury Comet Automatic Transmission with 8" Ring Gear 1966, Differential Carrier Gasket With 10 Bolt Holes by Victor Reinz®. When you’re low on oil, coolant or some other fluid, you may be tempted to just run down to the local auto...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $3.35
    • (0 reviews)
      # 1298493657
      Mercury Comet 1966, 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 global engineering resources, the...
      Direct OEM replacement for a proper fitEnsures reliable sealing performance
      $3.17 - $4.37
    • (0 reviews)
      # mpn4515297019
      Mercury Comet with Ford 9" Series Axle 1966, 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
      Mercury Comet with Ford 9" Series Axle 1966, Differential Pinion Nut 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
      $4.99
    • (0 reviews)
      # mpn4515297149
      Mercury Comet with Ford 9" Series Axle 1966, Differential Pinion Seal 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
      $7.99
    • (0 reviews)
      # mpn4515297058
      Mercury Comet with Ford 9" Series Axle 1966, 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)
      # 990425308
      Mercury Comet with Ford 9" Series Axle with 10 Bolt 1966, Mini Spool by AllStar Performance®. Lightweight. Designed utilizing the latest technology, this product by AllStar Performance features premium quality and will perform better...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $29.99
    • (0 reviews)
      # 990441183
      Mercury Comet with 9" Series Axle with 10 Bolt 1966, 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)
      # 1146010366
      Mercury Comet with Ford 9" Series Axle 1966, 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...
      Precise manufacturing and high-grade materialsExceptional performance at a competitive price
      $98.99 - $128.99
    • (0 reviews)
      # mpn4515297071
      Mercury Comet with Ford 8" Series Axle 1966, 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...
      Precise manufacturing and high-grade materialsExceptional performance at a competitive price
      $36.99
    • (0 reviews)
      # mpn4515297068
      Mercury Comet with Ford 9" Series Axle 1966, 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
      Mercury Comet with Ford 9" Series Axle 1966, 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)
      # 1017020693
      Mercury Comet with Ford 9" Series Axle 1966, 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)
      # 1346596894
      Mercury Comet with Ford 9" Series Axle 1966, 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,...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $229.78 - $538.42
    • (0 reviews)
      # 1029360651
      Mercury Comet Base 1966, 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 power transfer....
      Expertly crafted from superior materialsProvides exceptional reliability
      $516.67
    • (0 reviews)
      # 1029105625
      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
      $122.80
    • (0 reviews)
      # mpn4517168145
      Mercury Comet with 31 Spline with Ford 9" Series Axle 1966, Rear Differential Locker by Aussie Locker®. The Aussie Locker is the most advanced "traction added" Automatic Precision Locker in the world today. Specifically designed for...
      High quality at an affordable priceExpertly made from premium materials
      $333.02
    • (0 reviews)
      # mpn4517169130
      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)
      # 126893165
      Mercury Comet 1966, 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 control...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $112.08 - $258.34
    • (0 reviews)
      # mpn4517170190
      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
      $26.03
    • (0 reviews)
      # mpn4517170573
      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
      $4.31
    • (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
      $47.16 - $73.04
    • (0 reviews)
      # 503548278
      Mercury Comet with Factory Pinion Support with Ford 9" Series Axle with 2.891" Race Diameter 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
      $106.03 - $110.75
    • (0 reviews)
      # mpn4517168192
      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
      $7.78
    • (0 reviews)
      # mpn4517169069
      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
      $28.52
    • (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
      $20.40 - $58.26
    • (0 reviews)
      # mpn4517169874
      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
      $4.80
    • (0 reviews)
      # mpn4517172545
      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
      $11.23
    • (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
      $273.61 - $296.98
    • (0 reviews)
      # 503467135
      Mercury Comet 1966, Rear Differential Carrier by Motive Gear®. Without Internal Kit. 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
      $367.67 - $384.86
    • (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
      $208.55 - $437.01
    • (0 reviews)
      # mpn4517171246
      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
      $115.08
    • (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
      $122.27 - $191.19
    • (0 reviews)
      # mpn4517172407
      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
      $10.69
    • (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
      $4.46 - $6.39
    • (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
      $223.72 - $250.19
    • (0 reviews)
      # 503318434
      Mercury Comet with Ford 9" Series Axle with 10 Bolt with Dual Drilled for 1/2" Ring Gear Bolts / with Dual Drilled for 7/16" Ring Gear Bolts 1966, Rear Lightweight Pro Gear Ring and Pinion Gear Set by Motive Gear®. Motive Gear Pro Gear...
      Motive Gear uses the highest quality standards of manufacturingFrom machining and finishing to heat treatment company demand the best
      $604.83 - $757.35
    • (0 reviews)
      # 503387298
      Mercury Comet with 9" Series Axle with 10 Bolt 1966, Rear Lightweight 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
      $249.40 - $251.85
    • (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
      $320.61 - $969.31
    • (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
      $291.52 - $331.11
    • (0 reviews)
      # mpn4517170592
      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
      $30.71
    • (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




    Popular Products



    1966 Mercury Comet Models
    Low Prices Price match guarantee
    Guaranteed Fitment Always the correct part
    In-House Experts We know our products
    Easy Returns Quick & Hassle Free

    All manufacturer names, symbols, and descriptions, used in our images and text are used solely for identification purposes only. It is neither inferred nor implied that any item sold by CARiD.com is a product authorized by or in any way connected with any vehicle manufacturers displayed on this page.

    SECURE SHOPPING