1984 Dodge Diplomat Differentials

Essential 1984 Dodge Diplomat Differentials

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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Felpro – Differential Cover Gasket (Part No.RDS 12775)

Differential Cover Gasket

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$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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USA Standard Gear – Open Spider Gear Set For Chrysler 8.25", 27 Spline (Part No.39002)

Open Spider Gear Set For Chrysler 8.25", 27 Spline

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$209.99
USA Standard Gear open spider gear set for Chrysler 8.25″, 27 spline .

Product Features:
  • Spider gear kit
  • Fits Chrysler 8.25″ 27 spline open differential
  • 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 With Positraction Additive – 4 Quarts (Part No.15005)

Redline Synthetic "Shock Proof" Oil With Positraction Additive - 4 Quarts

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$148.99
Redline Synthetic “Shock Proof” Oil with positraction Additive. 4 Quarts.

Product Features:
  • Includes four quarts of Redline Shockproof oil and one 4oz bottle of Yukon positraction additive
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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

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$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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Yukon Gear – High Performance Ring & Pinion Gear Set For Chrylser 8.25" In A 4.88 Ratio (Part No.24226)

High Performance Ring & Pinion Gear Set For Chrylser 8.25" In A 4.88 Ratio

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$529.99
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 Chrysler 8.25″
  • 8.25″ ring gear diameter
  • 27 spline pinion
  • 10 ring gear bolts
  • 4.88 ratio
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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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Needa Parts – Differential Plug, Rubber, Chrysler 2008-2000 (Part No.65293)

Differential Plug, Rubber, Chrysler 2008-2000

from

$5.99
This differential cover plug 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 differential cover plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug 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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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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Powertrax – Grip LS Traction System (Part No.LS308229)

Grip LS Traction System

from

$505.99
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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Motive Gear – Differential Bearing Kit – Koyo (Part No.R8.25R)

Differential Bearing Kit - Koyo

from

$102.99
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 CHRYS. 8.25
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Motive Gear – Differential Carrier Gear Kit (Part No.C8.25BI)

Differential Carrier Gear Kit

from

$121.99


Product Features:
  • INTERNALS 8.25 CHRYSLER 27 SPLINE 96 & EARLIER
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National – Bearings (Part No.M804049)

Bearings

from

$38.49
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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Motive Gear – Differential Pinion Nut (Part No.1260823)

Differential Pinion Nut

from

$8.49
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 o
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Yukon Gear – Dura Grip For Chrysler 9.25" Rear (Part No.26019)

Dura Grip For Chrysler 9.25" Rear

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$829.99
The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence & performance you need. Get longer life and better traction with the heavy duty Yukon Dura Grip Positraction. The Yukon Dura Grip uses a nodular case and forged 4320 internals for added strength along with composite clutches for high performance and long life. All units are Rebuildable and many offer upgrades to increase aggressiveness for racing applications. Each unit carries a one year warranty against defects.

Product Features:
  • Fits Chrysler 9.25″ rear
  • 4-spring, clutch style positraction
  • Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
  • Fully rebuildable
  • Assembled in the USA
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Motive Gear – Differential Carrier Gear Kit (Part No.C7.25BI)

Differential Carrier Gear Kit

from

$108.99


Product Features:
  • CHRYSLER 7.25″ INTERNAL KIT
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Yukon Gear – Carrier Installation Kit For ’76 & Up Chrysler 8.25" Rear (Part No.57014)

Carrier Installation Kit For '76 & Up Chrysler 8.25" Rear

from

$78.99
Yukon Carrier installation kits are great, low cost kit for carrier changes such as Positraction or locker upgrades. Carrier installation kit for ’76 & up Chrysler 8.25″ rear.

Product Features:
  • Fits 1976 and up Chrysler 8.25″
  • Includes carrier bearings and races
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Yukon Gear – Pinion Install Kit For Chrysler 7.25" Differential (Part No.13001)

Pinion Install Kit For Chrysler 7.25" Differential

from

$223.99
Yukon Pinion installation kits are a terrific solution for gear installation on lower mileage vehicles where the carrier bearings & races can be reused. This kit uses Timken bearings and races along with a high quality pinion seal and small parts. Included in this kit are the pinion bearings and races, pilot bearing (if applicable), crush sleeve (if applicable), complete pinion shim kit, thread locker, and marking compound with 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 pinion gear.

Product Features:
  • Fits Chrysler 7.25″
  • Included are pinion bearings and races, pinion seal, crush sleeve, complete pinion shim kit, and marking compound with brush.
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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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Driveworks – Tapered Roller Bearing (Part No.S-LM-603012)

Tapered Roller Bearing

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$6.79
Product Features:
  • Brand may vary by location
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Yukon Gear – Dana 44 And Chrysler 9.25" Traclloc Clutch Kit Replacement (Part No.16153)

Dana 44 And Chrysler 9.25" Traclloc Clutch Kit Replacement

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$139.99
Dana 44 & 9.25 Chrysler TracLoc clutch kit.

Product Features:
  • Clutch kit
  • Fits Dana Spicer 44 and Chrysler 9.25″ Trac Loc positraction
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Yukon Gear – Six Piece Side Gear And Thrust Washer Kit For Chrysler 8" And 9.25" (Part No.33278)

Six Piece Side Gear And Thrust Washer Kit For Chrysler 8" And 9.25"

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$98.99
Six piece side gear thrust washer kit for Chrysler 8″ and 9.25″.

Product Features:
  • Side gear thrust washer kit
  • Fits Chrysler 8″ and 9.25″
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Motive Gear – Ring Gear Bolt (Part No.1304)

Ring Gear Bolt

from

$7.99


Product Features:
  • CHRY 8 3/4″ RING GEAR BOLTS C 8.25″
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Motive Gear – Differential Gear Install Kit (Part No.C7.25IK)

Differential Gear Install Kit

from

$31.99
Product Features:
  • MINI-INSTLTN KIT-CHRYSLER 7 1/4″
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USA Standard Gear – Spartan Locker For Chrysler 8.25" With 29 Spline Axles, Includes Heavy-Duty Cross Pin Shaft (Part No.17038)

Spartan Locker For Chrysler 8.25" With 29 Spline Axles, Includes Heavy-Duty Cross Pin Shaft

from

$799.99
The Spartan Locker, by USA Standard Gear, provides reliable traction at a low cost. Give your vehicle great traction and save some cash. Choose a Spartan Locker for better traction. The Spartan locker by USA standard gear is a mechanical locker that replaces the spiders in a standard case. The Spartan locker’s design does not use the thrust washers and has a revolutionary spring and pin design that makes installation a snap! The couplers and drivers are made from 9310 steel, for added strength. Each Spartan locker carries a one year warranty against defect.

Product Features:
  • Fits Chrysler 8.25″ with 29 spline axles
  • Made from 9310 steel for added strength
  • Replaces the spiders in a standard carrier case
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Yukon Gear – Steel Cover For Chrysler 8.25" (Part No.32312)

Steel Cover For Chrysler 8.25"

from

$159.99
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 t

Product Features:
  • Fits Chrysler 8.25″
  • Steel
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Motive Gear – Differential Pinion Shim Kit (Part No.1100)

Differential Pinion Shim Kit

from

$7.49
High-quality Differential Component Shim

Product Features:
  • SHIM KIT FITS-8.25-F7.5-AMC20-GM0
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Dorman – Oil Drain Plug Differential Plug Chrysler 2008-2000, Head Size (Part No.090-062CD)

Oil Drain Plug Differential Plug Chrysler 2008-2000, Head Size

from

$8.99
This differential cover plug 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 differential cover plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this plug 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
See More

1984 Dodge Diplomat Differentials

Maybe you’re in the middle of a full rebuild of that 1984 Dodge Diplomat. Maybe you just need a couple of Differentials. Either way, Advance Auto Parts has 164 different Differentials in our inventory ranging from $2.49 to $829.99. That means you can find the exact parts or products you need to keep that 1984 Dodge Diplomat running smoothly.

Differentials are only as good as their brand. We stock 10 different brands to make sure you have plenty of trusted parts to choose from for your 1984 Dodge Diplomat. Driveworks, Dorman, and Yukon Gear 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 1984 Dodge Diplomat, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 420 reviews in this category, some of the top rated parts include Bearings with 4.7 stars and Differential Ring and Pinion Set with 5.0 stars.

So if you’re in the market for aftermarket Differentials to keep your 1984 Dodge Diplomat 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 1984 Dodge Diplomat Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1984 Dodge Diplomat 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 Diplomat the best it can be. Be sure to browse some of our top Differentials brands and parts.

Popular Needa Parts Differentials

We carry Needa Parts parts in our stock across Differential Drain Plugs categories, plus more. For a 1984 Dodge Diplomat, our most popular Needa Parts Differentials include:
Differential Plug, Rubber, Chrysler 2008-2000
from $5.99
(11)
Differential Plug, Rubber, Chrysler 2008-2000
Differential Drain Plugs

Top 1984 Dodge Diplomat Differentials from Felpro

Felpro products are another trusted brand when it comes to Differentials for your 1984 Dodge Diplomat. Popular Felpro parts include:
DIFFERENTIAL GASKET
from $6.79
(21)
DIFFERENTIAL GASKET
Rear Differential Cover Gaskets

FAQs for 1984 Dodge Diplomat Differentials

What are the most purchased Differentials for the 1984 Dodge Diplomat?

Out of 164 Differentials for the 1984 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 Shaft Lock Bolt
from $5.99
(11)
Differential Shaft Lock Bolt
Differential Pinion Shaft Lock Bolts
3 Qt - Penzoil 80W90 Conventional Gear Oil
from $44.99
This product is not rated
3 Qt – Penzoil 80W90 Conventional Gear Oil
Differential Oil

What are the top-rated 1984 Dodge Diplomat Differentials?

Top-rated Differentials for your 1984 Dodge Diplomat based on customer reviews/ratings are:
Bearings
from $18.79
(3)
Bearings
“as advertised”
Differential Ring and Pinion Set
from $384.99
(2)
Differential Ring and Pinion Set
“good”
Differential Crush Sleeve
from $2.49
(1)
Differential Crush Sleeve
“High quality, would buy again”