1973 Mercury Montego Differentials

Keep Your 1973 Mercury Montego in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1973 Mercury Montego looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Bearing Kits, Differential Crush Sleeves, and Differential Bearings. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Differentials from Trusted Brands

Looking for a reliable Differential? We’ve got you covered with options from brands you know and trust like National, Motive Gear, and FELPRO. For example, National Differentials start at just $7.99 with an average 4.3 star rating. Motive Gear and FELPRO offer similar pricing and quality, backed by strong customer feedback. With over 3,300 reviews and a solid 5 star average, you can shop with confidence knowing other Mercury Montego owners approve.

Explore Related Parts

While you’re upgrading or replacing your Differential, don’t forget to check out other key components like Drive Shafts and Axles and Universal Joints. At Advance Auto Parts, we’re here to help you keep your 1973 Mercury Montego in peak condition, inside and out.

Essential 1973 Mercury Montego Differentials

Motive Gear – Differential Lock Thrust Block (Part No.D3SZ4211A)

Differential Lock Thrust Block

from

$47.49
Motive Gear offers some of the toughest drive train components on the market today. If you are looking for the largest line of performance ring and pinion gear options available with gear sets in a wide range of ratios for nearly every application, both on and off-road, check out Motive Gear. Motive Gear products can be found in the winner’s circle at racing events worldwide. The superior quality of Motive Gear components is the result of years of racing development, outstanding design and state-of-the-art manufacturing methods. Extensive testing is performed on all products by our in-house engineers.
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FAG US – Cup (Part No.M88010)

Cup

from

$11.29
With advanced load-carrying capacity and compact design, tapered roller bearings are used in wheel bearings, transmissions, differentials, transfer cases and other miscellanous applications. FAG manufacturers over 100 million tapered roller bearings annually.

Product Features:
  • High-precision and High-quality components used in all KITs
  • Coverage of classic and new high-tech solutions for the best system coverage
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Motive Gear – Differential Bearing Kit – Timken (Part No.R9RT)

Differential Bearing Kit - Timken

from

$115.99
Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

Product Features:
  • KIT BRG & SEAL FORD 9″
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Motive Gear – Differential Carrier Gear Kit (Part No.F9-IO28)

Differential Carrier Gear Kit

from

$111.99


Product Features:
  • INT KT 8″ AND 9″ OPEN 28 SPL FRD
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Motive Gear – Differential Carrier (Part No.D3TZ4204A)

Differential Carrier

from

$226.99


Product Features:
  • FORD 9″ EMPTY POSI CASE – 28 & 31 SPLINES
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Motive Gear – Differential Pinion Shim Kit (Part No.WAA4663)

Differential Pinion Shim Kit

from

$15.99
All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of our products undergo rigid quality control processes to insure proper fit, performance and longevity. Motive Gear products can be found in the winners circle at NHRA, IHRA, NMRA, NMCA, SODA, SCORE, BITD, Ultra-4 and NASCAR events because we offer unmatched selection and quality demanded by racers and their crew chiefs – the same quality and selection demanded by DIY customers and top mechanics. With four warehouses strategically located across North America, most Motive Gear orders arrive within 2-4 days. Win with Motive Gear!
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Felpro – Differential Carrier Gasket Oval Shaped 10 Bolt Hole Gasket (Part No.RDS 55074)

Differential Carrier Gasket Oval Shaped 10 Bolt Hole Gasket

from

$9.99
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design to ensure a perfect fit
  • Unsurpassed quality you can trust
  • Validated for fit, form and function
  • Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
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Motive Gear – Nodular Differential Housing (Part No.26325)

Nodular Differential Housing

from

$533.99


Product Features:
  • NODULAR HOUSING 9″ FORD 3.25″ BORE
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Motive Gear – Differential Spool (Part No.FS9-35LW)

Differential Spool

from

$149.99


Product Features:
  • FULL SPOOL FORD 9″ 35 SPL. LGT WGT
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National – Shaft Repair Sleeve (Part No.99181)

Shaft Repair Sleeve

from

$37.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Designed to repair damaged, grooved or worn shafts
  • Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
  • Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
  • Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
  • Easy to install with removable flange and installation tool
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National – Bearing Race (Part No.M88010)

Bearing Race

from

$7.99
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.

Product Features:
  • PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
  • SMOOTH ROTATION – Crowned raceways for even load distribution
  • OE-STYLE DESIGN – Engineered to meet OE specifications
  • COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on
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Powertrax – No-Slip Traction System (Part No.9206902800)

No-Slip Traction System

from

$551.99
For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.
  • Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.
  • Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.
  • Powertrax® = Extreme Traction Systems!
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    Motive Gear – Differential Carrier Gear Kit (Part No.F9-IO)

    Differential Carrier Gear Kit

    from

    $108.99


    Product Features:
    • INTERN. 9″ OPEN 2 PIN FD 31SPL
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    Motive Gear – Differential Pinion Nut (Part No.379570S)

    Differential Pinion Nut

    from

    $6.99
    All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of our products undergo rigid quality control processes to insure proper fit, performance and longevity. Motive Gear products can be found in the winners circle at NHRA, IHRA, NMRA, NMCA, SODA, SCORE, BITD, Ultra-4 and NASCAR events because we offer unmatched selection and quality demanded by racers and their crew chiefs – the same quality and selection demanded by DIY customers and top mechanics. With four warehouses strategically located across North America, most Motive Gear orders arrive within 2-4 days. Win with Motive Gear!
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    Motive Gear – Performance Differential Ring and Pinion (Part No.F890514)

    Performance Differential Ring and Pinion

    from

    $225.99


    Product Features:
    • FRD 10BLT 9.0 R/P 5.14 MGP
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    Motive Gear – Performance Differential Ring and Pinion (Part No.F890370)

    Performance Differential Ring and Pinion

    from

    $251.99


    Product Features:
    • FRD 10BLT 9.0 R/P 3.70 MGP
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    Powertrax – Grip PRO Traction System (Part No.GT108028)

    Grip PRO Traction System

    from

    $537.99
    For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!
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    Richmond Gear – RngPnnInstlKt (Part No.83-1011-B)

    RngPnnInstlKt

    from

    $48.99
    RngPnnInstlKt

    Motive Gear – Differential Gear Install Kit (Part No.F9IKN)

    Differential Gear Install Kit

    from

    $46.49
    All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of our products undergo rigid quality control processes to insure proper fit, performance and longevity. Motive Gear products can be found in the winners circle at NHRA, IHRA, NMRA, NMCA, SODA, SCORE, BITD, Ultra-4 and NASCAR events because we offer unmatched selection and quality demanded by racers and their crew chiefs – the same quality and selection demanded by DIY customers and top mechanics. With four warehouses strategically located across North America, most Motive Gear orders arrive within 2-4 days. Win with Motive Gear!
    See More

    Pro-King – Crush Sleeve (Part No.721A034)

    Crush Sleeve

    from

    $2.99
    Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

    Product Features:
    • All products are designed to meet or exceed OE quality, form, fit and funtion.
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    Motive Gear – Differential Crush Sleeve (Part No.3507575)

    Differential Crush Sleeve

    from

    $2.99


    Product Features:
    • CRUSH SLEEVE 7.25 & 8.25 MIN ORDER 5000
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    National – Multi-Purpose Seal (Part No.8181NA)

    Multi-Purpose Seal

    from

    $12.99
    National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

    Product Features:
    • Design type: spring loaded; multi-lip
    • Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
    • Good low temperature capability
    • Low swell in hydrocarbon fluids
    • Delivers quality and reliable performance for every type of repair
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    Motive Gear – Differential Pinion Seal (Part No.7044NA)

    Differential Pinion Seal

    from

    $12.99
    All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of our products undergo rigid quality control processes to insure proper fit, performance and longevity. Motive Gear products can be found in the winners circle at NHRA, IHRA, NMRA, NMCA, SODA, SCORE, BITD, Ultra-4 and NASCAR events because we offer unmatched selection and quality demanded by racers and their crew chiefs – the same quality and selection demanded by DIY customers and top mechanics. With four warehouses strategically located across North America, most Motive Gear orders arrive within 2-4 days. Win with Motive Gear!
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    Motive Gear – Differential Pinion Solid Spacer Kit w/Shims (Part No.SS9)

    Differential Pinion Solid Spacer Kit w/Shims

    from

    $45.99
    All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of our products undergo rigid quality control processes to insure proper fit, performance and longevity. Motive Gear products can be found in the winners circle at NHRA, IHRA, NMRA, NMCA, SODA, SCORE, BITD, Ultra-4 and NASCAR events because we offer unmatched selection and quality demanded by racers and their crew chiefs – the same quality and selection demanded by DIY customers and top mechanics. With four warehouses strategically located across North America, most Motive Gear orders arrive within 2-4 days. Win with Motive Gear!
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    ARP Auto Racing – For Use With Ford 9" Using 5/8"Socket, 0.94"L Under Head, 7/16"-20, 12Point Head (Part No.250-3002)

    For Use With Ford 9" Using 5/8"Socket, 0.94"L Under Head, 7/16"-20, 12Point Head

    from

    $43.99
    The tremendous shock loads generated at launch by most any drag racing vehicle equipped with today sticky tire compounds or the acceleration and deceleration of oval track cars put considerable strain on the ring gear. For this reason, the fastener experts at ARP have developed the Pro Series ring gear bolts. they are forged from premium grade 8740 chrome moly steel and are heat treated to a nominal rating of 200,000 PSI tensile strength. Specially hardened, precision ground washers are included where required. Available to fit most any ring gear setup ranging from popular 9 Inch Ford GM 10 and 12 bolt rear ends to the beefy strange differentials found in top fuel and funny car applications.

    Product Features:
    • Forged From Premium Grade 8740 Chrome Moly Steel
    • Heat Treated
    • Nominally Rated At 200,000 PSI Tensile Strength
    • Specially Hardened, Precision Ground Washers
    • 0.95″ Underhead Length
    • 200,000 PSI
    • Sold As A Set
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    Motive Gear – Ring Gear Bolt (Part No.D8OZ4216B)

    Ring Gear Bolt

    from

    $1.99


    Product Features:
    • BOLT 9″ FORD OPEN R.G. SAME AS M-4216A200
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    Most Popular Differential Bearing Kits for 1973 Mercury Montegos

    Enhance your 1973 Mercury Montego with one of the 25 Differential Bearing Kits we have in stock, starting at just $97.99.

    Motive Gear – Differential Master Bearing Kit – Timken (Part No.RA310RMKT)

    Differential Master Bearing Kit - Timken

    from

    $129.99
    Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

    Product Features:
    • MSTR KIT BRG & SEAL FORD 8″
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    Motive Gear – Differential Master Bearing Kit – Timken (Part No.RA310RAMKT)

    Differential Master Bearing Kit - Timken

    from

    $125.99
    Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

    Product Features:
    • FORD 8″ BRG. MSTR KIT W/AUBURN & TRUETRAC TIMEKEN
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    Dorman – Premium Ring and Pinion Master Bearing and Installation Kit (Part No.797-117)

    Premium Ring and Pinion Master Bearing and Installation Kit

    from

    $498.99
    If you’re repairing or rebuilding a front or rear differential and want the best performance and longevity from the bearings being replaced, choose this premium differential kit. It includes high-precision bearings manufactured to tighter tolerances and engineered to last longer than common lower-grade bearings that have more backlash when subjected to the torque generated within the differential. This convenient kit also saves the time needed to source individual components. Check the product attributes and fitment details to select the correct premium differential kit for your application.

    Product Features:
    • Ideal solution – this premium differential bearing kit features high-precision bearings to help ensure longer bearing life, prevent backlash, and restore proper differential operation
    • Direct replacement – the components in this all-in-one kit are engineered to precisely match the fit and function of the original equipment bearings for a seamless installation
    • Increased reliability – the premium bearings in this kit are manufactured to exacting tolerances and specifications from high quality materials to help ensure optimal performance
    • Application-specific – check the product attributes and fitment details to choose the correct kit for your application
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    LuK – Differential Repair Kit (Part No.GDK313)

    Differential Repair Kit

    from

    $315.99
    Product Features:
    • Each LuK GearBOX contains all the OE quality bearings needed for a professional transmission repair
    • LuK Differential Bearing Kits are designed to meet or exceed OEM requirements. This will ensure customer satisfaction.
    • LuK Differential Bearing Kits contain the bearings and seals needed to complete the job.
    • LuK Differential Bearing Kits include wear parts such as seals, O-rings, shaft sealing rings, support bearings and spare parts where necessary for eliminating the specific cause of failure.
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    Richmond Gear – RngPnnInstlKt (Part No.83-1015-1)

    RngPnnInstlKt

    from

    $199.99
    RngPnnInstlKt

    Richmond Gear – RngPnnInstlKt (Part No.83-1005-1)

    RngPnnInstlKt

    from

    $191.99
    RngPnnInstlKt

    Richmond Gear – RngPnnInstlKt (Part No.83-1013-1)

    RngPnnInstlKt

    from

    $187.99
    RngPnnInstlKt

    Richmond Gear – Differential Bearing Kit (Part No.83-1011-1)

    Differential Bearing Kit

    from

    $153.99
    Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND!

    Product Features:
    • For over 80-years, the Richmond Double-Diamond logo has represented some of the highest quality gears in the racing industry. Winners Run Richmond!
    • The superior quality of Richmond gearsets is a result of outstanding design, world class manufacturing and an extensive testing process that is performed on all products.
    • Richmond performance gearsets have been winners for decades at: NHRA, NMRA, NMCA, Daytona 500, WISSOTA and U.S. Nationals.
    • Richmond Gear is a leading manufacturer of high performance ring and pinion gearsets and drivetrain components, backed by a two year warranty.
    • Engineered to perform faster and be more reliable, Richmond performance drivetrain products are the result of a continuous research and development program combined with state-of-the-art manufacturing capabilities.
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    Motive Gear – Differential Master Bearing Kit – Timken (Part No.R9R306MK)

    Differential Master Bearing Kit - Timken

    from

    $143.99
    Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

    Product Features:
    • MASTER KIT FORD 9″ W/ DAYTONA
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    Motive Gear – Differential Master Bearing Kit – Koyo (Part No.R9R325SMK)

    Differential Master Bearing Kit - Koyo

    from

    $134.99
    Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

    Product Features:
    • BEARING KIT FORD 9″ W/3.25 CARRIER & STD PINION SUPPORT MSTR KIT
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    Motive Gear – Differential Master Bearing Kit – Timken (Part No.R9R306SMK)

    Differential Master Bearing Kit - Timken

    from

    $131.99
    Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

    Product Features:
    • BEARING KIT FORD 9″ W/3.062 CARRIER BRGS & STD PINION SUPPORT MSTR KIT
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    Motive Gear – Differential Master Bearing Kit – Koyo (Part No.RA310RAMK)

    Differential Master Bearing Kit - Koyo

    from

    $129.99
    Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

    Product Features:
    • FORD 8″ BRG MSTR KIT W/AUBURN & TRUETRAC
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    Motive Gear – Differential Master Bearing Kit – Koyo (Part No.R9RMK)

    Differential Master Bearing Kit - Koyo

    from

    $127.99
    Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

    Product Features:
    • KT BRNG.&SEAL FORD MSTR 9
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    Motive Gear – Differential Master Bearing Kit – Koyo (Part No.R9R325MK)

    Differential Master Bearing Kit - Koyo

    from

    $119.99
    Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

    Product Features:
    • MASTER KIT FORD 9″ W/ DAYTONA
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    Motive Gear – Differential Bearing Kit – Timken (Part No.R9R306S)

    Differential Bearing Kit - Timken

    from

    $118.99
    Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

    Product Features:
    • BEARING KIT FORD 9″ W/3.062 CARRIER BRGS & STD PINION SUPPORT
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    Motive Gear – Differential Bearing Kit – Koyo (Part No.R9R325)

    Differential Bearing Kit - Koyo

    from

    $117.99
    Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

    Product Features:
    • 9″ BEARING KIT FOR 3.25 HOUSING
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    Motive Gear – Differential Master Bearing Kit – Koyo (Part No.RA310RMK)

    Differential Master Bearing Kit - Koyo

    from

    $116.99
    Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

    Product Features:
    • MSTR BRG KIT-8″ FORD OPEN DIFF ONLY
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    Motive Gear – Differential Bearing Kit – Timken (Part No.R9RT)

    Differential Bearing Kit - Timken

    from

    $115.99
    Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

    Product Features:
    • KIT BRG & SEAL FORD 9″
    See More

    Motive Gear – Differential Bearing Kit – Timken (Part No.R9R306)

    Differential Bearing Kit - Timken

    from

    $111.99
    Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

    Product Features:
    • 9″ BEARING KIT FOR 3.06 HOUSING
    See More

    Motive Gear – Differential Bearing Kit – Timken (Part No.RA310RAT)

    Differential Bearing Kit - Timken

    from

    $106.99
    Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

    Product Features:
    • FORD 8″ BRG.KIT W/AUBURN & TRUETRAC TIMEKEN
    See More

    Motive Gear – Differential Bearing Kit – Koyo (Part No.R9R)

    Differential Bearing Kit - Koyo

    from

    $105.99
    Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

    Product Features:
    • KIT BRG.&SEAL FORD 9
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    Motive Gear – Differential Bearing Kit – Koyo (Part No.R9RS)

    Differential Bearing Kit - Koyo

    from

    $105.99
    Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

    Product Features:
    • BEARING KIT FD 9″
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    Motive Gear – Differential Bearing Kit – Koyo (Part No.R9RN)

    Differential Bearing Kit - Koyo

    from

    $105.99


    Product Features:
    • BRG & SEAL KIT-FORD 9″W/DAYTONA SUPPORT&28 SPL PINION
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    Motive Gear – Differential Master Bearing Kit – Koyo (Part No.R9RNMK)

    Differential Master Bearing Kit - Koyo

    from

    $105.99
    Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

    Product Features:
    • BRG & SEAL KIT-FORD 9″ W/DAYTONA SUPPORT AND 28 SPL PIOION
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    Motive Gear – Differential Bearing Kit – Koyo (Part No.R9R325S)

    Differential Bearing Kit - Koyo

    from

    $97.99
    Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

    Product Features:
    • BEARING KIT FORD 9″ W/3.25 CARRIER & STD PINION SUPPORT
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    Best-Selling 1973 Mercury Montego Differential Crush Sleeves

    Upgrade your Montego with one of our 4 best-selling Differential Crush Sleeves, earning an average 5 stars rating across 1 reviews.

    Motive Gear – Differential Crush Sleeve (Part No.3507575)

    Differential Crush Sleeve

    from

    $2.99


    Product Features:
    • CRUSH SLEEVE 7.25 & 8.25 MIN ORDER 5000
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    Dorman – Help – Pinion Crush Sleeves (Part No.81056)

    Pinion Crush Sleeves

    from

    $6.49
    This differential crush sleeve is designed to match the fit and function of the original sleeve on specified vehicles, and is engineered for durability and reliable performance.

    Product Features:
    • Direct replacement – this differential crush sleeve is designed to match the fit and function of the original sleeve on specified vehicles
    • Required replacement – when servicing the differential
    • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
    • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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    Pro-King – Crush Sleeve (Part No.721A034)

    Crush Sleeve

    from

    $2.99
    Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

    Product Features:
    • All products are designed to meet or exceed OE quality, form, fit and funtion.
    See More

    Pro-King – Differential Crush Sleeve (Part No.761A034)

    Differential Crush Sleeve

    from

    $2.99
    Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

    Product Features:
    • All products are designed to meet or exceed OE quality, form, fit and funtion.
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    Top-Quality Differential Bearings for 1973 Mercury Montegos

    Choose a high-quality OEM or aftermarket Differential Bearing for Mercury Montegos and enjoy top-notch performance from $7.79.

    National – Multi-Purpose Bearing (Part No.A-13)

    Multi-Purpose Bearing

    from

    $13.79
    Product Features:
    • CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
    • PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
    • SMOOTH ROTATION: Crowned raceways and rollers for even load distribution
    • OE-STYLE DESIGN: Engineered to meet OE specifications
    • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
    • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
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    Driveworks – Tapered Cone/Cup Wheel Bearing Set (Part No.S-A-35)

    Tapered Cone/Cup Wheel Bearing Set

    from

    $26.99
    Value-priced bearing meets all cataloged application requirements.

    Product Features:
    • Brand may vary by location
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    National – Bearing Race (Part No.LM102910)

    Bearing Race

    from

    $7.79
    Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.

    Product Features:
    • PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
    • SMOOTH ROTATION – Crowned raceways for even load distribution
    • OE-STYLE DESIGN – Engineered to meet OE specifications
    • COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
    • RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on
    See More

    National – Bearing Race (Part No.LM501310)

    Bearing Race

    from

    $8.49
    Product Features:
    • PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
    • SMOOTH ROTATION: Crowned raceways for even load distribution
    • OE-STYLE DESIGN: Engineered to meet OE specifications
    • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
    • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
    See More

    FAG US – Bearing – TRB (Tapered Roller Bearing) (Part No.KT13)

    Bearing - TRB (Tapered Roller Bearing)

    from

    $20.29
    With advanced load-carrying capacity and compact design, tapered roller bearings are used in wheel bearings, transmissions, differentials, transfer cases and other miscellanous applications. FAG manufacturers over 100 million tapered roller bearings annually.

    Product Features:
    • High-precision and High-quality components used in all KITs
    • Coverage of classic and new high-tech solutions for the best system coverage
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    FAG US – Cup (Part No.M88010)

    Cup

    from

    $11.29
    With advanced load-carrying capacity and compact design, tapered roller bearings are used in wheel bearings, transmissions, differentials, transfer cases and other miscellanous applications. FAG manufacturers over 100 million tapered roller bearings annually.

    Product Features:
    • High-precision and High-quality components used in all KITs
    • Coverage of classic and new high-tech solutions for the best system coverage
    See More

    FAG US – Cup (Part No.LM501310)

    Cup

    from

    $9.99
    With advanced load-carrying capacity and compact design, tapered roller bearings are used in wheel bearings, transmissions, differentials, transfer cases and other miscellanous applications. FAG manufacturers over 100 million tapered roller bearings annually.

    Product Features:
    • High-precision and High-quality components used in all KITs
    • Coverage of classic and new high-tech solutions for the best system coverage
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    Top Picks for 1973 Mercury Montego Differential Ring Gear Bolts

    Invest in one of our 2 durable Differential Ring Gear Bolts for your 1973 Mercury, knowing you’re getting trusted brands and expert craftsmanship.

    Motive Gear – Ring Gear Bolt (Part No.D8OZ4216B)

    Ring Gear Bolt

    from

    $1.99


    Product Features:
    • BOLT 9″ FORD OPEN R.G. SAME AS M-4216A200
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    ARP Auto Racing – For Use With Ford 9" Using 5/8"Socket, 0.94"L Under Head, 7/16"-20, 12Point Head (Part No.250-3002)

    For Use With Ford 9" Using 5/8"Socket, 0.94"L Under Head, 7/16"-20, 12Point Head

    from

    $43.99
    The tremendous shock loads generated at launch by most any drag racing vehicle equipped with today sticky tire compounds or the acceleration and deceleration of oval track cars put considerable strain on the ring gear. For this reason, the fastener experts at ARP have developed the Pro Series ring gear bolts. they are forged from premium grade 8740 chrome moly steel and are heat treated to a nominal rating of 200,000 PSI tensile strength. Specially hardened, precision ground washers are included where required. Available to fit most any ring gear setup ranging from popular 9 Inch Ford GM 10 and 12 bolt rear ends to the beefy strange differentials found in top fuel and funny car applications.

    Product Features:
    • Forged From Premium Grade 8740 Chrome Moly Steel
    • Heat Treated
    • Nominally Rated At 200,000 PSI Tensile Strength
    • Specially Hardened, Precision Ground Washers
    • 0.95″ Underhead Length
    • 200,000 PSI
    • Sold As A Set
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    Top-Rated Differential Pinion Seals for 1973 Mercury Montegos

    Make a smart move for your 1973 Mercury Montego with products all priced from $6.49 to $21.79.

    National – Multi-Purpose Seal (Part No.8181NA)

    Multi-Purpose Seal

    from

    $12.99
    National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

    Product Features:
    • Design type: spring loaded; multi-lip
    • Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
    • Good low temperature capability
    • Low swell in hydrocarbon fluids
    • Delivers quality and reliable performance for every type of repair
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    Driveworks – Oil Seal (Part No.S-7044NA)

    Oil Seal

    from

    $6.49
    Value-priced seal meets all cataloged application requirements.

    Product Features:
    • Brand may vary by location
    See More

    FAG US – Shaft Seal (Part No.SS2934)

    Shaft Seal

    from

    $21.79
    Our wheel seals are engineered using only the highest-quality materials to meet vehicle manufacturer specificatons. We work with suppliers to design seals that meet FAG’s quality standards. Seals are designed to protect wheel end components from contamination – such as dirt, dust, and moisture – and prevent the loss of grease over the life of the bearing. The specifications for wheel seals are very demanding, and the type required depends on the specific application, position and vehicle class.

    Product Features:
    • High-precision and High-quality components used in all KITs
    • Coverage of classic and new high-tech solutions for the best system coverage
    See More

    Motive Gear – Differential Pinion Seal (Part No.7044NA)

    Differential Pinion Seal

    from

    $12.99
    All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of our products undergo rigid quality control processes to insure proper fit, performance and longevity. Motive Gear products can be found in the winners circle at NHRA, IHRA, NMRA, NMCA, SODA, SCORE, BITD, Ultra-4 and NASCAR events because we offer unmatched selection and quality demanded by racers and their crew chiefs – the same quality and selection demanded by DIY customers and top mechanics. With four warehouses strategically located across North America, most Motive Gear orders arrive within 2-4 days. Win with Motive Gear!
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    Top-Rated Differential Brands For Your 1973 Mercury Montego

    When it comes to finding the perfect Differential for your 1973 Mercury Montego, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 11 trusted brands. We carry the most popular Differential brands including FELPRO, National, and Motive Gear, and more, all known for their exceptional customer ratings (average brand rating of 4.6 stars) and competitive prices, as low as $2.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1973 Mercury Montego, providing peace of mind with parts that meet or exceed OEM standards.

    Popular FELPRO 1973 Mercury Montego Differentials

    If you’re looking for a top-quality Differential for your 1973 Mercury Montego, Advance Auto Parts has exactly what you need with our selection of FELPRO Differentials. We have 1 FELPRO Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $9.99, you’ll find the perfect Differential for your needs and budget. FELPRO Differentials for the 1973 Mercury Montego come highly rated, with over 9 customer reviews and an impressive average rating of 4.6 stars. Choosing a FELPRO Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
    Differential Carrier Gasket Oval Shaped 10 Bolt Hole Gasket
    from $9.99
    (9)
    Differential Carrier Gasket Oval Shaped 10 Bolt Hole Gasket
    “Right fit the first time.”

    Top-Quality National 1973 Mercury Montego Differentials

    For those in search of a high-quality Differential for their 1973 Mercury Montego, Advance Auto Parts offers a great selection of National Differentials. With 3 National Differentials in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Differentials start at just $7.99, with an average price of $11.59, giving you a range of options to suit your budget. Backed by over 23 customer ratings and an average rating of 4.3 stars, National Differentials provide both reliability and excellent performance. Choosing a National Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
    Bearing Race
    from $7.99
    (4)
    Bearing Race
    “Goes with M88010 bearing cup. Application was the pinion bearing race for a Ford 9 Inch on a 1957 Ford F-100.”
    Multi-Purpose Bearing
    from $13.79
    (17)
    Multi-Purpose Bearing
    “Good quality product”
    Multi-Purpose Seal
    from $12.99
    (2)
    Multi-Purpose Seal
    “Worked great on this 1966 Mustang w/ 8″ rear end.”

    FAQs for 1973 Mercury Montego Differentials

    What are the best-selling Differentials for 1973 Mercury Montegos?

    Out of 150 Differentials that fit 1973 Mercury Montegos, the following parts are the top sellers:

    What’s the price range for 1973 Mercury Montego Differentials?

    The prices of Differentials for the 1973 Mercury Montego range from $1.99 up to $679.99 for the most premium parts.

    What is the average price of a Differential for a 1973 Mercury Montego?

    The average price for Differentials for the 1973 Mercury Montego is $237.61. Keep in mind the variety of part types within our Differential category, where you are likely to find a wide range of prices across a variety of parts and components.

    Does Advance Auto Parts sell Differentials for other Mercury Montego model years?

    Yes, we carry Differentials for 10 model years of Mercury Montegos between 1968 and 2007. The following model years are the most popular for Differential purchases: 2007, 2006, 2005, 1976, 1975, 1974, 1972, 1971, and 1970.

    What are the cheapest Differentials for my 1973 Mercury Montego?

    The cheapest 1973 Mercury Montego Differentials we carry are:

    Does Advance Auto Parts sell Differentials for any other 1973 Mercury models?

    Yes. We stock Differentials for 5 other popular 1973 Mercury models. Some of the most popular are 1973 Cougar Differentials, 1973 Monterey Differentials, 1973 Colony Park Differentials, 1973 Capri Differentials, and 1973 Marquis Differentials.

    What are the top-rated Differentials that fit the 1973 Mercury Montego?

    Based on 3,300 reviews by customers, our 1973 Mercury Montego Differentials have an average customer rating of 5 stars. These are the highest-rated categories of Differentials for the 1973 Mercury Montego and their top-rated products:

    What types of Differentials do you sell for my 1973 Mercury Montego?

    As of 11/2/25, these are some of the most in-demand types of Differentials for a 1973 Mercury Montego:

    Can I get help with 1973 Mercury Montego Differential orders?

    Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Mercury Differentials and more.

    What is your return policy for Mercury Montego Differentials?

    Advance Auto Parts keeps returns simple. For new Mercury Montego Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.