1978 Dodge Diplomat Drivetrains

Essential 1978 Dodge Diplomat Drivetrains

Yukon Gear – Yoke For Chrysler 7.25" And 8.25" With A 7290 U/Joint Size (Part No.41005)

Yoke For Chrysler 7.25" And 8.25" With A 7290 U/Joint Size

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$359.99
Yukon yoke for Chrysler 7.25″ and 8.25″ with a 7290 U/joint size. 2.625″ snap ring span. 1.125″ cap diameter. Inside snap ring. All Yukon yokes come with a one year warranty against manufacturing defects.

Product Features:
  • Fits Chrysler 7.25″ and 8.25″
  • 27 spline
  • 7290 u-joint size
  • Inside snap ring design
  • 2.625″ snap ring span
  • 1.125″ cap diameter
  • Strap style
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Yukon Gear – R1559Tv Rear Axle Bearing And Seal Kit (Part No.10001)

R1559Tv Rear Axle Bearing And Seal Kit

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$52.99
Yukon axle bearing & seal kits are specially designed for each application & use all high quality bearings & seals. R1559TV axle bearing and seal kit, TorringtonBrand, 2.530″ OD, 1.620″ ID This axle bearing & seal kit services one side only.

Product Features:
  • Includes axle bearing and seal
  • Services one side
  • Torrington Brand
  • 2.530″ O.D.
  • 1.620″ I.D.
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Yukon Gear – The Carrier Bearing Puller (Part No.56034)

The Carrier Bearing Puller

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$689.99
The Yukon carrier bearing Puller works with an impact gun to quickly and safely remove carrier bearings without damaging them. This unit comes with a handy bench top stand and works with up to most standard one ton applications. This unit is works with differentials up to one-ton applcations. It is not compatible with Dana 70HD, Dana 80, 10.25″ & 10.5″ Ford, or GM & Chrysler 11.5″ differentials.

Product Features:
  • Carrier bearing puller
  • Works with an impact gun to safely and easliy remove carrrier bearings
  • Not compatible with Dana 70HD, Dana 80, Ford 10.25″ and 10.5″ or Gm and Chrysler 11.5″ applications
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Yukon Gear – 9.25" Chrysler C/Clip (Part No.33075)

9.25" Chrysler C/Clip

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$17.99
9.25″ Chrysler C/clip, 0.205″ wide for 4137429 axle.

Product Features:
  • c-clip for Chrysler 9.25″ rear
  • 0.205″ thick
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Motive Gear – Differential Gear Install Kit (Part No.C7.25IK)

Differential Gear Install Kit

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$31.99
Product Features:
  • MINI-INSTLTN KIT-CHRYSLER 7 1/4″
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Motive Gear – Differential Carrier Gear Kit (Part No.C8.25BI)

Differential Carrier Gear Kit

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$121.99


Product Features:
  • INTERNALS 8.25 CHRYSLER 27 SPLINE 96 & EARLIER
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Yukon Gear – Standard Open Spider Gear Kit For ’96 And Older 8.25" Chrysler With 27 Spline Axles (Part No.16002)

Standard Open Spider Gear Kit For '96 And Older 8.25" Chrysler With 27 Spline Axles

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$301.99
Yukon standard open spider gear kit for ’96 and older 8.25″ Chrysler with 27 spline axles. 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.

Product Features:
  • Spider gear kit
  • Fit Chrysler 8.25″ open differntial with 27 spline axles
  • Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers.
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Yukon Gear – Redline Synthetic "Shock Proof" Oil – 4 Quarts (Part No.15004)

Redline Synthetic "Shock Proof" Oil - 4 Quarts

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$137.99
Redline Synthetic “Shock Proof” Oil. 4 Quarts.

Product Features:
  • Includes four quarts of Redline Shockproof oil
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Yukon Gear – Yoke For Chrysler 9.25" With A 7290 U/Joint Size (Part No.41002)

Yoke For Chrysler 9.25" With A 7290 U/Joint Size

from

$279.99
Yukon yoke for Chrysler 9.25″ with a 7290 U/joint size. 2.625″ snap ring span. 1.125″ cap diameter. Inside snap ring. All Yukon yokes come with a one year warranty against manufacturing defects.

Product Features:
  • Fits Chrysler 9.25″ rear
  • 29 spline
  • 7290 u-joint size
  • 2.625″ snap ring span
  • 1.125″ cap diameter
  • Inside snap ring design
  • Strap style
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Driveworks – Tapered Roller Bearing (Part No.S-M-802011)

Tapered Roller Bearing

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$10.49
Product Features:
  • Brand may vary by location
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Yukon Gear – Rubber Fill Plug For Chrysler (Part No.33463)

Rubber Fill Plug For Chrysler

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$22.99
Product Features:
  • Rubber fill plug
  • Fits Chrysler 7.25″, 8.25″ and 9.25″
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Yukon Gear – Differential Side Bearing Screw Adjuster For 9.25" Chrysler (Part No.33256)

Differential Side Bearing Screw Adjuster For 9.25" Chrysler

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$64.99
Differential side bearing screw adjuster for 9.25″ Chrysler.

Product Features:
  • Side adjuster for Chrysler 9.25″ rear
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National – Bearings (Part No.M88010)

Bearings

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$10.49
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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Pro-King – Differential Bearing Cup (Part No.742G256)

Differential Bearing Cup

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$8.99
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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Spicer – Universal Joint (Part No.5-789X)

Universal Joint

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$42.99
When you see the Spicer name, you know you are buying the highest quality product available. Spicer universal joints are no exception. Dana manufactures a full line of Spicer universal joints that are engineered to ensure longer life for vehicles in a wide variety of applications, from light vehicle to commercial and off-highway.
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Yukon Gear – Standard Open Carrier Case For ’09 & Down Chrysler 9.25" Rear (Part No.20008)

Standard Open Carrier Case For '09 & Down Chrysler 9.25" Rear

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$261.99
Product Features:
  • Standard open carrier case
  • Fits 2009 and down Chrysler 9.25″ rear
  • Does not include spider gears
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Yukon Gear – Pinion Seal For 8.75" Chrysler Or For 9.25" Chrysler With 41 Or 89 Housing (Part No.30121)

Pinion Seal For 8.75" Chrysler Or For 9.25" Chrysler With 41 Or 89 Housing

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$13.99
Pinion seal for 8.75″ Chrysler or for 9.25″ Chrysler with 41 or 89 housing.Yukon Mighty seal.

Product Features:
  • Pinion seal
  • Fits Chrysler 8.75″ with ’41’ and ’89’ case housings and 2000 and down Chrysler 9.25″
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USA Standard Gear – Spartan Spring & Pin Kit, Fits Smaller Designs (Part No.17011)

Spartan Spring & Pin Kit, Fits Smaller Designs

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$26.99
Spartan spring & pin kit, fits smaller designs.

Product Features:
  • Replacement spring and pin kit for Spartan Locker
  • Fits Dana 30, Dana 44, AMC Model 20, AMC Model 35, and Toyota designs
  • Includes 4 springs and 4 alignment pins
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Yukon Gear – Pinion Depth Shims For GM 8.25" IFS, 8.5", 12 Bolt Car, Ford 8.8" & Chrysler 8.25" (Part No.55009)

Pinion Depth Shims For GM 8.25" IFS, 8.5", 12 Bolt Car, Ford 8.8" & Chrysler 8.25"

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$27.99
8.25″ IFS, 8.5″, 12P, 7.5″ F, 8.8″ F, 8.25″ Chrysler pinion shim kit.

Product Features:
  • Pinion depth shims for GM 8.25″ IFS, 8.5″, 8.6″, 12 bolt passenger car, Ford 7.5″ and 8.8″, Chrysler 8.25″
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National – Multi Purpose Seal (Part No.9376)

Multi Purpose Seal

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$7.29
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:
  • Low swell in hydrocarbon fluids
  • Design type: spring loaded; multi-lip
  • Provides good low temperature capability
  • Temperature range: -40°F to 225°F; -40°C to 107°C
  • Delivers quality and reliable performance for every type of repair
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National – Shaft Repair Sleeve (Part No.99106)

Shaft Repair Sleeve

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$33.99
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
  • Installation tool reduces sleeve distortion and allows for installation without removal from the shaft
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USA Standard Gear – Open Spider Gear Set For Chrysler 9.25", 31 Spline (Part No.39004)

Open Spider Gear Set For Chrysler 9.25", 31 Spline

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$209.99
Product Features:
  • Fits Chrysler 9.25″ rear with open differential
  • Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers.
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Driveworks – Tapered Roller Bearing (Part No.S-JLM-704610)

Tapered Roller Bearing

from

$9.99
Product Features:
  • Brand may vary by location
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Felpro – Differential Cover Gasket (Part No.RDS 12775)

Differential Cover Gasket

from

$8.29
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 – Cross Pin Shaft For Chrysler 7.25" (Part No.33307)

Cross Pin Shaft For Chrysler 7.25"

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$49.99
Cross pin shaft for Chrysler 7.25″.

Product Features:
  • Cross pin shaft
  • Fits Chrysler 7.25″
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Yukon Gear – Bearing Install Kit For ’75 And Newer Chrysler 8.25" Differential (Part No.11004)

Bearing Install Kit For '75 And Newer Chrysler 8.25" 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 1976 and up Chrysler 8.25″
  • Included are carrier bearings and races, pinion bearings and races, pinion seal, crush sleeve , marking compound and brush.
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Dorman – Standard Spindle Nut 3/4 In.-16 Hex Size 1-1/16 In. (sold by each) (Part No.615-072)

Standard Spindle Nut 3/4 In.-16 Hex Size 1-1/16 In. (sold by each)

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$3.99
This spindle nut is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this spindle nut matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this nut is a reliable replacement for an original part that is missing or has failed due to fatigue
  • 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 – Differential Axle Seal (Part No.742G074)

Differential Axle Seal

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$4.49
Pro-King High Quality Differential Products are designed for trouble free installation and setup.
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Popular 1978 Dodge Diplomat Drivetrains Categories

1978 Dodge Diplomat Drivetrains

You count on your 1978 Dodge Diplomat to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Drivetrains. With 213 Drivetrains ranging in price from $2.49 to $883.99, you’re sure to find everything you need for your 1978 Dodge Diplomat.

Brands matter. If you want to shop a specific Drivetrains brand, we stock 12 different brands like National, Felpro, and Yukon Gear. 1978 Dodge Diplomat Drivetrains start as low as $2.49!

One of the best ways to find top quality OEM or aftermarket Drivetrains is by asking professionals. Short of that, you can shop with confidence thanks to our 2,652 extensive product reviews on 1978 Dodge Diplomat Drivetrains. Some of the top-rated Drivetrains products we carry are Universal Joint with 4.8 stars and Bearings with 4.8 stars.

Did we mention you can order your Drivetrains from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Drivetrains inventory for your 1978 Dodge Diplomat below to get started!

Top-Rated Drivetrains Brands For Your 1978 Dodge Diplomat

Trusted Drivetrains OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 1978 Dodge Diplomat running right for years to come. In our inventory you’ll find brands like National, Felpro, Yukon Gear, and even more.

Popular Yukon Gear Drivetrains

You’ll find popular Yukon Gear brand products across Differentials. All are waiting to get your 1978 Dodge Diplomat back on the road. Some of the top-rated Yukon Gear products in these categories are:
Cross Pin Shaft For Standard Open Chrysler 9.25"
from $46.99
(1)
Cross Pin Shaft For Standard Open Chrysler 9.25"
Differential Cross Pins

Top-Rated National Drivetrains


If National are what you’re looking for, our inventory holds plenty. We stock National brand Drivetrains for your 1978 Dodge Diplomat, and some of our most reviewed National parts include:
Multi Purpose Seal
from $10.99
(19)
Multi Purpose Seal
Axle Shaft Seals
Multi Purpose Seal
from $8.99
(19)
Multi Purpose Seal
Axle Shaft Seals
Bearings
from $15.99
(9)
Bearings
Front Differential Pinion Bearings

FAQs for 1978 Dodge Diplomat Drivetrains

What are the most purchased Drivetrains for the 1978 Dodge Diplomat?

Out of 213 Drivetrains for the 1978 Dodge Diplomat, the most popular in our inventory are:
Tapered Cone/Cup Wheel Bearing Set
from $13.99
(14)
Tapered Cone/Cup Wheel Bearing Set
Differential Bearings
Differential Cover Gasket
from $9.49
(34)
Differential Cover Gasket
Rear Differential Cover Gaskets
DIFFERENTIAL GASKET
from $6.79
(21)
DIFFERENTIAL GASKET
Rear Differential Cover Gaskets

What are the top-rated 1978 Dodge Diplomat Drivetrains?

Top-rated Drivetrains for your 1978 Dodge Diplomat based on customer reviews/ratings are:
Universal Joint
from $4.99
(5)
Universal Joint
“Fits great to make the install easy.”
Bearings
from $10.49
(4)
Bearings
“Goes with M88010 bearing cup. Application was the pinion bearing race for a Ford 9 Inch on a 1957 Ford F-100.”
Standard Spindle Nut 3/4 In.-16 Hex Size 1-1/16 In.
from $3.49
(3)
Standard Spindle Nut 3/4 In.-16 Hex Size 1-1/16 In.
“Same as oem”