1978 AMC AMX Differentials

Essential 1978 AMC AMX Differentials

Yukon Gear – Redline Synthetic "Shock Proof" Oil – 3 Quarts (Part No.15000)

Redline Synthetic "Shock Proof" Oil - 3 Quarts

from

$99.99
Redline Synthetic “Shock Proof” Oil. 3 Quarts.

Product Features:
  • Includes three quarts of Redline Shockproof oil
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Pro-King – Differential Bearing Cone (Part No.742G255)

Differential Bearing Cone

from

$19.79
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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Yukon Gear – Model 20 Gasket (Part No.23025)

Model 20 Gasket

from

$15.99
Model 20 gasket.

Product Features:
  • Cover gasket
  • Fits AMC Model 20
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Powertrax – Lock Right Locker (Part No.2310-LR)

Lock Right Locker

from

$359.99
The Powertrax Lock-Right ultra-strength alloy locker’s straight-line performance is equal to a solid spool, but automatically unlocks in turns. Best suited for extreme off-road to severe on-road use, Powertrax Lock Right lockers replace the spider gears in your open differential carrier using basic tools and without affecting your ring and pinion settings. The whole job can be done in your driveway in a couple of hours, pin included! 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!
  • See More

    Yukon Gear – Standard Open Spider Gear Kit For Model 35 With 27 Spline Axles (Part No.16128)

    Standard Open Spider Gear Kit For Model 35 With 27 Spline Axles

    from

    $197.99
    Yukon standard open spider gear kit for Model 35 with 27 spline axles. hubs have 1.560″ diameter (used in ’94 and newer models). Yukon uses higher quality materials and better techniques than OEM to ensure a longer lasting spider gear set. All components come with a one year warranty against manufacturing defects. *May work with ’93 model with 1.5600″ journal.

    Product Features:
    • Spider gear kit
    • Fits AMC Model 35 open differential with 1.560″ side gear bore
    • Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers.
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    Felpro – DIFFERENTIAL GASKET (Part No.RDS 13089)

    DIFFERENTIAL GASKET

    from

    $6.79
    Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

    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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    Yukon Gear – High Performance Ring & Pinion Gear Set For Model 35 In A 4.56 Ratio (Part No.24182)

    High Performance Ring & Pinion Gear Set For Model 35 In A 4.56 Ratio

    from

    $399.99
    Yukon Ring & Pinion sets give you the confidence of knowing you’re running gears designed for the harshest of conditions. Whether it’s on the street, off-road, or at the track; Yukon ring & pinion sets deliver unrivaled performance & quality. Yukon uses the latest designs and manufacturing technologies to provide a quiet running gear that is strong and easy to set up. All Yukon ring & pinion sets come standard with a one-year warranty.

    Product Features:
    • Fits standard rotation AMC Model 35
    • 7.562″ ring gear diameter
    • 26 spline pinion
    • 8 ring gear bolts
    • 4.56 ratio
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    Yukon Gear – High Performance Ring & Pinion Gear Set For Model 20 In A 4.11 Ratio (Part No.24175)

    High Performance Ring & Pinion Gear Set For Model 20 In A 4.11 Ratio

    from

    $447.99
    Yukon Ring & Pinion sets give you the confidence of knowing you’re running gears designed for the harshest of conditions. Whether it’s on the street, off-road, or at the track; Yukon ring & pinion sets deliver unrivaled performance & quality. Yukon uses the latest designs and manufacturing technologies to provide a quiet running gear that is strong and easy to set up. All Yukon ring & pinion sets come standard with a one-year warranty.

    Product Features:
    • Fits AMC Model 20
    • 8.875″ ring gear diameter
    • 28 spline pinion
    • 8 ring gear bolts
    • 4.11 ratio
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    Pro-King – Pinion Seal (Part No.720A070)

    Pinion Seal

    from

    $4.99
    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

    Yukon Gear – Pinion Seal For Model 20 And Model 35 (Part No.30079)

    Pinion Seal For Model 20 And Model 35

    from

    $9.99
    Pinion seal for Model 20 and Model 35.Yukon Mighty seal.

    Product Features:
    • Pinion seal
    • Fits AMC Model 20 and AMC Model 35
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    Yukon Gear – Replacement Ring Gear Bolt For Model 20, Grand Cherokee 35, "Super" Dana 30 & Dana 50 – 7/16" X 20 (Part No.33040)

    Replacement Ring Gear Bolt For Model 20, Grand Cherokee 35, "Super" Dana 30 & Dana 50 - 7/16" X 20

    from

    $3.99
    Replacement ring gear bolt for Model 20, Grand Cherokee 35, “Super” Dana 30 & Dana 50. 7/16″ x 20.

    Product Features:
    • Ring gear bolt for AMC Model 20, “Super” 35, Dana Spicer “Super” 30 and Dana Spicer 50
    • 7/16″ 20 thread
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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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    Motive Gear – Differential Master Bearing Kit – Koyo (Part No.R20RMK)

    Differential Master Bearing Kit - Koyo

    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:
    • KIT BRG & SL MSTR AMC 20
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    Yukon Gear – Bearing Install Kit For Model 20 Differential (Part No.11081)

    Bearing Install Kit For Model 20 Differential

    from

    $234.99
    Yukon Bearing installation kits are perfect for shops & builders who have shims on the shelf and are looking to save cost over a Master Overhaul kit. This kit uses Timken bearings and races along with all high quality small parts. kit includes carrier bearings and races, pinion bearings and races, pinion seal, crush sleeve (if applicable), oil baffles and slingers (if applicable), marking compound and brush. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your ring & pinion set.

    Product Features:
    • Fits AMC Model 20
    • Included are carrier bearings and races, pinion bearings and races, pinion seal, crush sleeve, marking compound and brush.
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    Yukon Gear – Crush Sleeve (Part No.33085)

    Crush Sleeve

    from

    $9.99
    Crush Sleeve for Model 20, Ford 10.25″, 10.5″, 7.5″, 8.8″, 9 3/8″, 9″ & 9.75″. .480″ long.

    Product Features:
    • Crush sleeve for AMC Model 20, Ford 10.25″, 10.5″, 7.5″, 8.8″, 9″ and 9.75″
    • 0.480″ tall
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    Pro-King – Crush Sleeve (Part No.721A034)

    Crush Sleeve

    from

    $2.89
    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

    Yukon Gear – Replacement Pinion Depth Shims For Dana 35, Model 35 & Chrysler 7.25" (Part No.55014)

    Replacement Pinion Depth Shims For Dana 35, Model 35 & Chrysler 7.25"

    from

    $17.99
    Yukon 1541H alloy right hand rear axle for Model 35 (drum brakes) with a 54 tooth, 2.7″ ABS ring. axle has a length of 29-1/4″ inches and 27 splines. Yukon 1541H alloy axles offer a strength increase over stock while retaining a low cost. Yukon 1541H allo

    Product Features:
    • Pinion depth shims for AMC Model 35 and Chrysler 7.25″
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    Motive Gear – Differential Pinion Shim Kit (Part No.1112)

    Differential Pinion Shim Kit

    from

    $16.99


    Product Features:
    • PINION SHIM-DANA 30,35.50
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    Yukon Gear – Model 35 (Standard Open & Tracloc) 8.25" Chrysler Tracloc Cross Pin Bolt (Part No.33230)

    Model 35 (Standard Open & Tracloc) 8.25" Chrysler Tracloc Cross Pin Bolt

    from

    $13.99
    Model 35 (standard Open & TracLoc) 8.25″ Chrysler TracLoc cross pin bolt.

    Product Features:
    • Cross pin bolt for AMC Model 35 with c-clip axles
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    National – Bearings (Part No.A-6)

    Bearings

    from

    $16.99
    National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

    Product Features:
    • Premium bearing design matches OEM specifications
    • Precision manufactured using premium-grade steel for outstanding durability and performance
    • Crowned raceways and rollers to ensure even load distribution for maximum life
    • Industry leading coverage
    • Professional technicians know they can depend on National
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    Motive Gear – Differential Gear Install Kit (Part No.AM20IK)

    Differential Gear Install Kit

    from

    $52.79
    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 Gear Install Kit (Part No.D35IKJ)

    Differential Gear Install Kit

    from

    $81.99


    Product Features:
    • DANA-35 MINI INSTALL KIT JEEP
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    Yukon Gear – Ppinion Nut 7/8-20 Thread, 1 1/8 Socket (Part No.33146)

    Ppinion Nut 7/8-20 Thread, 1 1/8 Socket

    from

    $10.99
    Replacement pinion nut for Model 20 & 35, Dana 30 JK, 44 JK front, Ford 10.25″, 10.5″ & some 9.75″. 7/8-20 thread, 1 1/8 socket.

    Product Features:
    • Pinion nut for Jeep JK front, Jeep Liberty front, Ford 9.75″, 10.25″, 10.5″ and AMC Model 20 and Model 35
    • 7/8″ x 20 thread
    • 1 1/8″ socket
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    Motive Gear – Differential Pinion Nut (Part No.379570S)

    Differential Pinion Nut

    from

    $6.49
    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!
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    Yukon Gear – Zip Locker For Model 35 With 27 Spline Axles, 3.54 & Up (Part No.34027)

    Zip Locker For Model 35 With 27 Spline Axles, 3.54 & Up

    from

    $1286.99
    The Yukon Zip Locker is the latest in on-demand traction. Its air-operated design allows you to switch from an open differential to 100% lockup when you need it, giving you the ultimate in driver selectability. The Yukon Zip locker is an air operated locker that provides selectable traction for off road or street use. This unit features 4320 Chrome Moly internals for added strength. Assembled in the USA! compressor sold separately. All Zip Lockers are backed by the best warranty in the business! All Zip Lockers come with a six (6) year warranty, including any collaterally damaged parts and associated labor, up to $2,000, for the first two (2) years.

    Product Features:
    • Fits AMC Model 35 with 27 spline axles
    • 3.54 and up ratio only
    • Forged case and 8620 internals for added strength
    • Works with a variety of air delivery systems
    • Assembled in the USA
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    Yukon Gear – Grizzly Locker For Model 35 With 30 Spline Axles, 3.54 Up (Part No.28017)

    Grizzly Locker For Model 35 With 30 Spline Axles, 3.54 Up

    from

    $1025.99
    The Yukon Grizzly Locker is the ultimate in locking differentials for street, off-road, & drag racing. Grizzly Lockers provide 100% power to both tires, while still allowing for disengagement while negotiating turns. The Yukon Grizzly locker is a mechanical locking differential. It features a forged case and 8620 internals for maximum strength. It’s patented design reduces common locker failures. All units assembled in the USA! All Grizzly Lockers are backed by the best warranty in the business! Yukon covers the replacement unit and covers any collaterally damaged parts and associated labor, up to $2,000!

    Product Features:
    • Fits AMC Model 35 with 30 spline axles
    • 3.56 and up ratio only
    • Patented internal design reduces common locker failures
    • 8620 internals for added strength
    • Assembled in the USA
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    Powertrax – Lock Right Locker (Part No.1710-LR)

    Lock Right Locker

    from

    $368.99
    The Powertrax Lock-Right ultra-strength alloy locker’s straight-line performance is equal to a solid spool, but automatically unlocks in turns. Best suited for extreme off-road to severe on-road use, Powertrax Lock Right lockers replace the spider gears in your open differential carrier using basic tools and without affecting your ring and pinion settings. The whole job can be done in your driveway in a couple of hours, pin included! 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!
  • See More

    Powertrax – No-Slip Traction System (Part No.9201202900)

    No-Slip Traction System

    from

    $522.99
    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!
  • See More

    1978 AMC AMX Differentials

    Maybe you’re in the middle of a full rebuild of that 1978 AMC AMX. Maybe you just need a couple of Differentials. Either way, Advance Auto Parts has 41 different Differentials in our inventory ranging from $1.99 to $681.99. That means you can find the exact parts or products you need to keep that 1978 AMC AMX running smoothly.

    Differentials are only as good as their brand. We stock 7 different brands to make sure you have plenty of trusted parts to choose from for your 1978 AMC AMX. National, Yukon Gear, and Felpro are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

    We know you’ll find the perfect Differentials for your 1978 AMC AMX, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 141 reviews in this category, some of the top rated parts include Differential Pinion Nut with 4.0 stars.

    So if you’re in the market for aftermarket Differentials to keep your 1978 AMC AMX rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

    Differentials Brands To Make Your 1978 AMC AMX Last

    Simple repair, complete replacement, or a full rebuild. No matter the job, your 1978 AMC AMX demands trusted brand parts and products to keep it running. Many trusted brands of Differentials make up Advance Auto Parts’ inventory, and all are ready to help make your AMX the best it can be. Be sure to browse some of our top Differentials brands and parts.

    Popular National Differentials

    We carry National parts in our stock across Differential Bearings categories, plus more. For a 1978 AMC AMX, our most popular National Differentials include:
    Bearings
    from $10.49
    (2)
    Bearings
    Differential Bearings
    Bearings
    from $16.99
    (25)
    Bearings
    Differential Bearings
    Bearings
    from $15.99
    (7)
    Bearings
    Front Differential Pinion Bearings

    FAQs for 1978 AMC AMX Differentials

    What are the most purchased Differentials for the 1978 AMC AMX?

    Out of 41 Differentials for the 1978 AMC AMX, the most popular in our inventory are:
    3 Qt - Penzoil 80W90 Conventional Gear Oil
    from $44.99
    This product is not rated
    3 Qt – Penzoil 80W90 Conventional Gear Oil
    Differential Oil
    DIFFERENTIAL GASKET
    from $6.79
    (12)
    DIFFERENTIAL GASKET
    Rear Differential Cover Gaskets
    Differential Cover Gasket
    from $11.49
    This product is not rated
    Differential Cover Gasket
    Front Differential Cover Gaskets

    What are the top-rated 1978 AMC AMX Differentials?

    Top-rated Differentials for your 1978 AMC AMX based on customer reviews/ratings are:
    Differential Pinion Nut
    from $6.49
    (1)
    Differential Pinion Nut
    “If a pinion nut is ever removed from the pinion shaft, it is recommended NOT to reuse it. Replace it with a BRAND NEW nut, even if the old nut is rel”