1985 Dodge Diplomat Differentials

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Keep Your 1985 Dodge Diplomat in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1985 Dodge Diplomat looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Oil, Rear Differential Cover Gaskets, and Differential Pinion Seals. 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 Dorman, Motive Gear, and National. For example, Dorman Differentials start at just $6.79 with an average 4.2 star rating. Motive Gear and National offer similar pricing and quality, backed by strong customer feedback. With over 390 reviews and a solid 4 star average, you can shop with confidence knowing other Dodge Diplomat owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1985 Dodge Diplomat Differential at Advance Auto Parts is around $227.73, with a range that starts at $2.79 and goes up to $1,566.99. With 162 options in stock from 11 trusted brands, finding the right fit is easy. Popular picks like Axle Housing Cover Gasket: Oval Shaped 10 Bolt Hole Gasket, 3 Qt – 80W90 Conventional Gear Oil With Posi Additive, and 3 Qt – Penzoil 80W90 Conventional Gear Oil start at just $8.29 and offer a great balance of form and function.

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 1985 Dodge Diplomat in peak condition, inside and out.

Essential 1985 Dodge Diplomat Differentials

Yukon Gear – Bolt/Screw For Adjuster Lock For Chrysler 7.25", 8.25", 8.75", 9.25" (Part No.33233)

Bolt/Screw For Adjuster Lock For Chrysler 7.25", 8.25", 8.75", 9.25"

from

$15.99
Bolt/screw for adjuster lock for Chrysler 7.25″, 8.25″, 8.75″, 9.25″.

Product Features:
  • Side adjuster lock bolt
  • Fits Chrysler 7.25″, 8.25″, 8.75″ and 9.25″
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Motive Gear – Differential Crush Sleeve (Part No.3507575)

Differential Crush Sleeve

from

$2.79


Product Features:
  • CRUSH SLEEVE 7.25 & 8.25 MIN ORDER 5000
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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
See More

Yukon Gear – 3 Qt – 80W90 Conventional Gear Oil With Posi Additive (Part No.15003)

3 Qt - 80W90 Conventional Gear Oil With Posi Additive

from

$57.99
3 Qt. Penzoil 80W90 conventional gear Oil. W/ bottle of Posi additive.

Product Features:
  • Includes three quarts of conventional oil and one 4oz bottle of Yukon positraction additive
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Yukon Gear – 9.25" Cross Pin Shaft Tracloc Only, Not Standard Open 0.870" Diameter (Part No.33310)

9.25" Cross Pin Shaft Tracloc Only, Not Standard Open 0.870" Diameter

from

$57.99
9.25″ cross pin shaft TracLoc ONLY, not standard Open 0.870″ DIA.

Product Features:
  • Cross pin shaft for Chrysler 9.25″
  • Fits Trac Loc positraction only
  • 0.870″ diameter
See More

Motive Gear – Differential Gear Install Kit (Part No.C8.25IK)

Differential Gear Install Kit

from

$39.99
Product Features:
  • MINI INSTALL KIT CHRYSLER 8.25 8 1/4″
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Yukon Gear – Chrysler 9.25" Dura Grip Case, Bare (Part No.20015)

Chrysler 9.25" Dura Grip Case, Bare

from

$399.99
Product Features:
  • Dura Grip positraction carrier case
  • Does not include spider gears
  • Fits Chrysler 9.25″ rear
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Yukon Gear – Yoke For Chrysler 8.25" With A 1310 U/Joint Size (Part No.41010)

Yoke For Chrysler 8.25" With A 1310 U/Joint Size

from

$289.99
Yukon yoke for Chrysler 8.25″ with a 1310 U/joint size. 3.219″ snap ring span, 1.062″ cap diameter. Outside snap ring. This yoke uses straps, with outside snap rings for the Jeep Cherokee. All Yukon yokes come with a one year warranty against manufacturing defects.

Product Features:
  • Fits Chrysler 8.25″
  • 27 spline
  • 1310 u-joint size
  • Outside snap ring design
  • 3.219″ snap ring span
  • 1.062″ cap diameter
  • Strap style
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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"

from

$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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USA Standard Gear – Ring & Pinion Gear Set For Chrysler 8.25" In A 4.88 Ratio (Part No.36268)

Ring & Pinion Gear Set For Chrysler 8.25" In A 4.88 Ratio

from

$334.99
USA Standard ring & pinion sets are the right choice to add confidence to your install. USA Standard Gear offers a full line of ring & pinion sets for a variety of common & hard to find applications. USA standard gear offers a standard one year warranty against defects on their ring & pinion sets.

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 – Rubber Fill Plug For Chrysler (Part No.33463)

Rubber Fill Plug For Chrysler

from

$22.99
Product Features:
  • Rubber fill plug
  • Fits Chrysler 7.25″, 8.25″ and 9.25″
See More

Powertrax – Lock Right Locker (Part No.1230-LR)

Lock Right Locker

from

$450.99
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

    Dorman – Differential Pinion Yoke Assembly (Part No.697-541)

    Differential Pinion Yoke Assembly

    from

    $234.99
    A worn or damaged differential pinion flange can lead to driveline Vibrations! And fluid leaks. This part is designed to match the performance of the original equipment pinion flange on specified vehicles. It has been engineered to help restore a secure and reliable connection between the differential pinion and the drive shaft when the original flange is rusted, worn or damaged. It is made of rugged materials for reliable service and durability.

    Product Features:
    • Direct replacement – this differential pinion flange is designed to match the performance of the original equipment flange on specified vehicles
    • Ideal solution – engineered to help restore a secure and reliable connection between the differential pinion and the drive shaft when the original flange is worn or damaged
    • Durable construction – designed and manufactured to strict specifications for reliable performance
    • Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
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    Yukon Gear – The Carrier Bearing Puller (Part No.56034)

    The Carrier Bearing Puller

    from

    $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
    See More

    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
    See More

    Yukon Gear – Carrier Installation Kit For Chrysler 9.25" Rear Differential (Part No.57001)

    Carrier Installation Kit For Chrysler 9.25" Rear Differential

    from

    $173.99
    Yukon Carrier installation kits are great, low cost kit for carrier changes such as Positraction or locker upgrades. Carrier installation kit for Chrysler 9.25″ rear differential. This kit contains carrier bearings and races.

    Product Features:
    • Fits Chrysler 9.25″ rear
    • Includes carrier bearings and races
    See More

    Needa Parts – Rubber Differential Plug Chrysler 2008-2000 (sold by each) (Part No.090-062)

    Rubber Differential Plug Chrysler 2008-2000 (sold by each)

    from

    $10.99
    This differential cover plug is designed to match the fit & 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

    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″
    See More

    Yukon Gear – Standard Open Spider Gear Kit For 9.25" Chrysler With 31 Spline Axles (Part No.16004)

    Standard Open Spider Gear Kit For 9.25" Chrysler With 31 Spline Axles

    from

    $333.99
    Yukon standard open spider gear kit for 9.25″ Chrysler with 31 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 9.25″ rear with open differential
    • Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers.
    See More

    Yukon Gear – Chrysler 9.25" And Dana 44 / 60 Tracloc Clutch Guide Replacement (Part No.33249)

    Chrysler 9.25" And Dana 44 / 60 Tracloc Clutch Guide Replacement

    from

    $8.99
    Product Features:
    • Clutch guide for Chrysler 9.25″, Dana Spicer 44 and Dana Spicer 60
    • For Trac Loc positraction applications only
    See More

    Felpro – Axle Housing Cover Gasket: Oval Shaped 10 Bolt Hole Gasket (Part No.RDS 55047)

    Axle Housing Cover Gasket: Oval Shaped 10 Bolt Hole Gasket

    from

    $8.29
    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
    • Engineered for the sealing repair environment
    • Validated for fit, form and function
    • Unsurpassed quality you can trust
    See More

    Yukon Gear – Bearing Race Driver (Part No.56020)

    Bearing Race Driver

    from

    $215.99
    Bearing race driver. No return.

    Product Features:
    • Bearing race driver
    • Fits M802011 race
    • All steel construction
    See More

    Yukon Gear – Redi-Sleeve Yoke Saver For 8.75" C, 9.25" C, Dana 60, Dana 61, Dana 70, Dana 70U, Dana 70HD (Part No.30228)

    Redi-Sleeve Yoke Saver For 8.75" C, 9.25" C, Dana 60, Dana 61, Dana 70, Dana 70U, Dana 70HD

    from

    $37.99
    Replacement redi-sleeve yoke saver for 8.75″ c, 9.25″ c, Dana 60, Dana 61, Dana 70, Dana 70U, Dana 70HD .Yukon Mighty seal.

    Product Features:
    • Redi-Sleeve yoke saver
    • Fits Chrysler 8.75″ and 9.25″ rear, Dana Spicer 60, 70, 70U and 70HD
    See More

    National – Bearing Race (Part No.JLM704610)

    Bearing Race

    from

    $12.99
    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
    See More

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

    Dura Grip For Chrysler 9.25" Rear

    from

    $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
    See More

    Yukon Gear – Pinion Install Kit For Chrysler 9.25" Differential (Part No.13011)

    Pinion Install Kit For Chrysler 9.25" Differential

    from

    $276.99
    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, 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 9.25″ rear
    • Included are pinion bearings and races, pinion seal, crush sleeve , complete pinion shim kit, and marking compound with brush.
    See More

    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!
    See More

    Yukon Gear – 7.25" & 8.25" Chrysler Pinion Seal (Part No.30189)

    7.25" & 8.25" Chrysler Pinion Seal

    from

    $16.99
    7.25″ & 8.25″ Chrysler pinion seal.Yukon Mighty seal.

    Product Features:
    • Pinion seal
    • Fits Chrysler 7.25″ and 8.25″
    See More

    Most Popular Differential Oil for 1985 Dodge Diplomats

    Enhance your 1985 Dodge Diplomat with one of the 5 Differential Oil we have in stock, starting at just $44.99.

    Yukon Gear – 3 Qt – 80W90 Conventional Gear Oil With Posi Additive (Part No.15003)

    3 Qt - 80W90 Conventional Gear Oil With Posi Additive

    from

    $57.99
    3 Qt. Penzoil 80W90 conventional gear Oil. W/ bottle of Posi additive.

    Product Features:
    • Includes three quarts of conventional oil and one 4oz bottle of Yukon positraction additive
    See More

    Yukon Gear – 3 Qt – Penzoil 80W90 Conventional Gear Oil (Part No.15002)

    3 Qt - Penzoil 80W90 Conventional Gear Oil

    from

    $44.99
    3 Qt. Penzoil 80W90 conventional gear Oil.

    Product Features:
    • Includes three quarts of conventional oil
    See More

    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

    from

    $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
    See More

    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
    See More

    Yukon Gear – Redline Synthetic "Shock Proof" Oil – 4 Quarts (Part No.15004)

    Redline Synthetic "Shock Proof" Oil - 4 Quarts

    from

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

    Product Features:
    • Includes four quarts of Redline Shockproof oil
    See More

    Best-Selling 1985 Dodge Diplomat Rear Differential Cover Gaskets

    Upgrade your Diplomat with one of our 3 best-selling Rear Differential Cover Gaskets, earning an average 4.5 stars rating across 21 reviews.

    Felpro – Axle Housing Cover Gasket: Oval Shaped 10 Bolt Hole Gasket (Part No.RDS 55047)

    Axle Housing Cover Gasket: Oval Shaped 10 Bolt Hole Gasket

    from

    $8.29
    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
    • Engineered for the sealing repair environment
    • Validated for fit, form and function
    • Unsurpassed quality you can trust
    See More

    Yukon Gear – 9.25" Chrysler Rear Cover Gasket (Part No.23002)

    9.25" Chrysler Rear Cover Gasket

    from

    $12.99
    9.25″ Chrysler rear cover gasket.

    Product Features:
    • Cover gasket
    • Fits Chrysler 9.25″ rear
    See More

    Yukon Gear – 8.25" Chrysler Cover Gasket (Part No.23000)

    8.25" Chrysler Cover Gasket

    from

    $12.99
    8.25″ Chrysler cover gasket.

    Product Features:
    • Cover gasket
    • Fits Chrysler 8.25″
    See More

    Top-Quality Differential Pinion Seals for 1985 Dodge Diplomats

    Choose a high-quality OEM or aftermarket Differential Pinion Seal for Dodge Diplomats and enjoy top-notch performance from $13.99.

    Yukon Gear – 7.25" & 8.25" Chrysler Pinion Seal (Part No.30189)

    7.25" & 8.25" Chrysler Pinion Seal

    from

    $16.99
    7.25″ & 8.25″ Chrysler pinion seal.Yukon Mighty seal.

    Product Features:
    • Pinion seal
    • Fits Chrysler 7.25″ and 8.25″
    See More

    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

    from

    $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″
    See More

    Top Picks for 1985 Dodge Diplomat Differential Covers

    Invest in one of our 3 durable Differential Covers for your 1985 Dodge, knowing you’re getting trusted brands and expert craftsmanship.

    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
    See More

    Yukon Gear – Chrome Cover For Chrysler 9.25" (Part No.32001)

    Chrome Cover For Chrysler 9.25"

    from

    $73.99
    Toyota wheel seal for ’80-’97 Full float Landcruiser outer rear, ’86-’95 dually pick-up.Yukon Mighty seal.

    Product Features:
    • Fits Chrysler 9.25″ rear
    • Chrome
    See More

    Yukon Gear – Steel Cover For Chrysler 9.25" Rear (Part No.32314)

    Steel Cover For Chrysler 9.25" Rear

    from

    $93.99
    Product Features:
    • Fits Chrysler 9.25″ rear
    • Steel
    See More

    Top-Rated Differential Bearings for 1985 Dodge Diplomats

    Make a smart move for your 1985 Dodge Diplomat with products all priced from $26.99 to $34.49.

    National – Multi-Purpose Bearing (Part No.A-36)

    Multi-Purpose Bearing

    from

    $27.99
    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
    See More

    Yukon Gear – Cross Pin Bolt For 7.25" Chrysler (Part No.33231)

    Cross Pin Bolt For 7.25" Chrysler

    from

    $26.99
    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:
    • Cross pin bolt
    • Fits Chrylser 7.25″
    See More

    Schaeffler – Bearing – TRB (Tapered Roller Bearing) (Part No.KT36)

    Bearing - TRB (Tapered Roller Bearing)

    from

    $34.49
    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

    Top-Rated Differential Brands For Your 1985 Dodge Diplomat

    When it comes to finding the perfect Differential for your 1985 Dodge Diplomat, 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 National, Dorman, and Motive Gear, and more, all known for their exceptional customer ratings (average brand rating of 4.3 stars) and competitive prices, as low as $2.79. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1985 Dodge Diplomat, providing peace of mind with parts that meet or exceed OEM standards.

    Popular National 1985 Dodge Diplomat Differentials

    If you’re looking for a top-quality Differential for your 1985 Dodge Diplomat, Advance Auto Parts has exactly what you need with our selection of National Differentials. We have 2 National Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $17.99 and an average cost of $22.99, you’ll find the perfect Differential for your needs and budget. National Differentials for the 1985 Dodge Diplomat come highly rated, with over 8 customer reviews and an impressive average rating of 4.3 stars. Choosing a National Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
    Multi-Purpose Bearing
    from $17.99
    (7)
    Multi-Purpose Bearing
    “Comparable with the Timkens I removed. NATIONAL bearings have lasted decades in many of my other machines.”
    Multi-Purpose Bearing
    from $27.99
    (1)
    Multi-Purpose Bearing
    “great price”

    Top-Quality Dorman 1985 Dodge Diplomat Differentials

    For those in search of a high-quality Differential for their 1985 Dodge Diplomat, Advance Auto Parts offers a great selection of Dorman Differentials. With 3 Dorman 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 $6.79, with an average price of $133.26, giving you a range of options to suit your budget. Backed by over 24 customer ratings and an average rating of 4.2 stars, Dorman Differentials provide both reliability and excellent performance. Choosing a Dorman Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
    Differential Shaft Lock Bolt
    from $6.79
    (11)
    Differential Shaft Lock Bolt
    “great”
    Differential Ring and Pinion Set
    from $384.99
    (2)
    Differential Ring and Pinion Set
    “good”
    Differential Plug, Rubber
    from $7.99
    (11)
    Differential Plug, Rubber
    “I used this Rubber plug to fill a pre-drilled hole in a air intake tube that I customized for a particular application in my car, and it works beautif”

    FAQs for 1985 Dodge Diplomat Differentials

    What are the best-selling Differentials for 1985 Dodge Diplomats?

    Out of 162 Differentials that fit 1985 Dodge Diplomats, the following parts are the top sellers:

    What’s the price range for 1985 Dodge Diplomat Differentials?

    The prices of Differentials for the 1985 Dodge Diplomat range from $2.79 up to $1,566.99 for the most premium parts.

    What is the average price of a Differential for a 1985 Dodge Diplomat?

    The average price for Differentials for the 1985 Dodge Diplomat is $227.73. 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 Dodge Diplomat model years?

    Yes, we carry Differentials for 11 model years of Dodge Diplomats between 1977 and 1989. The following model years are the most popular for Differential purchases: 1989, 1988, 1987, 1986, 1984, 1983, 1982, 1981, and 1980.

    What are the cheapest Differentials for my 1985 Dodge Diplomat?

    The cheapest 1985 Dodge Diplomat Differentials we carry are:

    Does Advance Auto Parts sell Differentials for any other 1985 Dodge models?

    Yes. We stock Differentials for 23 other popular 1985 Dodge models. Some of the most popular are 1985 Charger Differentials, 1985 Caravan Differentials, 1985 Ramcharger Differentials, 1985 W150 Differentials, and 1985 D150 Differentials.

    What are the top-rated Differentials that fit the 1985 Dodge Diplomat?

    The one 1985 Dodge Diplomat Differential we have in stock is the Differential Crush Sleeve. It is rated 5 stars and costs $2.79.

    What types of Differentials do you sell for my 1985 Dodge Diplomat?

    As of 3/1/26, these are some of the most in-demand types of Differentials for a 1985 Dodge Diplomat:

    Can I get help with 1985 Dodge Diplomat Differential orders?

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

    What is your return policy for Dodge Diplomat Differentials?

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