1984 Dodge Diplomat Engine Parts

Essential 1984 Dodge Diplomat Engine Parts

Mr. Gasket – Valve Cover (Part No.9806)

Valve Cover

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$77.99
Chrome plated steel valve covers have a flat smooth top. Available for numerous applications.

Product Features:
  • Flat/smooth top
  • Designed to hold valve cover gasket in position
  • Made from grade 5 steel
  • Long lasting durability
  • Cadmium plated to resist corrosion
  • Easy installation
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Dorman – Pipe Plug C.S. Hex 3/8-18 Npt X 7/16 In. (sold by each) (Part No.090-028)

Pipe Plug C.S. Hex 3/8-18 Npt X 7/16 In. (sold by each)

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$1.29
This engine oil pump drain 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 engine oil pump drain 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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Dorman – Pik-a-Nut – Steel Cup Expansion Plug 1-5/8 In., Height 0.500 (Part No.362657.1)

Steel Cup Expansion Plug 1-5/8 In., Height 0.500

from

$2.29
This engine expansion 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 engine expansion 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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Sealed Power – Engine Valve Lifter (Part No.HT-2011)

Engine Valve Lifter

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$5.99
Sealed Power« parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Product Features:
  • Unsurpassed quality that you can trust
  • Uses leading edge materials
  • State-of-the-art manufacturing
  • Exacting tolerances
  • Meets or exceeds OEM specifications
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Anchor – Engine Mount: Front Right, 1 Piece (Part No.2325)

Engine Mount: Front Right, 1 Piece

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$12.99
The purpose of the mount is to support the engine and transmission on the chassis and dampen vibration and noise from reverberating to the rest of the vehicle. Engine and Transmission Mounts are engineered and manufactured to meet or exceed OEM specifications using the latest CAD/CAM engineering process to ensure superior quality, form, fit and function. Only premium quality materials are used in the manufacturing process to guarantee precise performance and maximum durability. Applicable to Applicable to CHRY 74-89; DODGE 72-89; PLYM 70-89;. Please verify your application.

Product Features:
  • MAXIMUM LIFE & PERFORMANCE: Both natural and SBR (Styrene Butadiene) rubber provide good abrasion resistance and aging stability to ensure maximum life and performance.
  • MEETS OR EXCEEDS DUROMETER MEASUREMENTS: All rubber material is manufactured to specific Durometer (hardness) measurements based on the vehicle’s application requirements.
  • HARDENED STEEL FASTENERS: All fasteners are made of hardened steel with heat treated Grade #5 bolts.
  • SUPERIOR BOND: A special Chemlock® bonding agent is used to ensure a superior rubber-to-metal bond.
  • HYDRAULIC MOUNT DESIGN: Hydraulic Mounts (applicable where OE) are designed for most front wheel drive vehicles because transverse drive train mounting.
  • For Years: 1970-1989
  • Weight approx: 3 Lbs
  • PART GROUP: 2325, 2326
  • COMPLETE MOUNT
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Dorman – Chrysler Steel Expansion Plug Kit, 14 Expansion Plugs, 11 Pipe Plugs (Part No.557-014)

Chrysler Steel Expansion Plug Kit, 14 Expansion Plugs, 11 Pipe Plugs

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$9.49
The plugs in this engine expansion plug kit are designed to match the original parts on specified vehicles. Made of quality materials, this kit components are engineered for reliable performance and durability.

Product Features:
  • Direct replacement – the components in this engine expansion plug kit are designed to match the original plugs on specified years, makes and models
  • Ideal solution – this kit is a reliable replacement for original plugs that have failed due to wear
  • Durable construction – this kit is made from quality components to ensure reliable performance and a 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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Sealed Power – Engine Rocker Arm (Part No.R-862)

Engine Rocker Arm

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$4.99
Sealed Power« parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
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Mahle – Timing Cover Gasket (Part No.A80501702552MAH)

Timing Cover Gasket

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$6.44
Timing Cover Gasket

Crankshaft Rebuilders – Remanufactured Crankshaft Kit (Part No.13610)

Remanufactured Crankshaft Kit

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$197.99
Remanufactured precision machined OE crankshafts.

Product Features:
  • Includes matching rod and main bearings.
  • Journals Micropolished.
  • All units subject to complete quality inspection.
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Cloyes Gear – Engine Timing Set (Part No.C-3022K)

Engine Timing Set

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$34.99
Timing Set includes all components for a quick and efficient replacement

Product Features:
  • Utilizes the latest in design and technology to offer complete chain sets
  • CAD designed and manufactured using premium materials
  • Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
  • Utilizes the latest in design and technology to offer complete chain sets
  • Refer to our online catalog for detailed application-specific information
  • Set Includes: Cam Sprocket, Crankshaft Sprocket, Timing Chain
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Felpro – Cylinder Head Gasket: Composite, Without Head Bolts (Part No.7918 PT-1)

Cylinder Head Gasket: Composite, Without Head Bolts

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$31.49
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:
  • PROPRIETARY COATING — Nonstick anti-friction coating seals small surface imperfections
  • NO RETORQUE DESIGN — Steel core helps eliminate the need for retorquing head bolts
  • SUPERIOR SEAL — Precise embossed Printoseal sealing beads at all vital areas to eliminate leak paths
  • STRONG AND DURABLE — Features graphite or reinforced fiber facing material and steel armor for strength and durability
  • DESIGNED FOR IMPERFECT SEALING SURFACES — Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
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National – Multi Purpose Seal (Part No.8516N)

Multi Purpose Seal

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$17.29
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.99218)

Shaft Repair Sleeve

from

$54.99
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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Felpro – VALVE STEM SEAL SET (Part No.SS 12764)

VALVE STEM SEAL SET

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$15.29
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:
  • RIGHT TYPE — Valve stem seals designs are application-specific for the repair occasion using either deflector (umbrella) seals, O-ring style or positive seals
  • QUALITY MATERIALS — Each valve stem seal features materials based on the specific application for your vehicle repair
  • ENGINEERING EXPERTISE — Parts are reviewed, validated and approved by Fel-Pro engineers through rigorous research, development and testing
  • INSTALLATION AID — Installation tool included to protect inner lip of seal from damage during seal installation
  • COVERAGE — Available for domestic and foreign nameplate vehicles
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Sealed Power – Engine Crankshaft Main Bearing Set (Part No.5070M 10)

Engine Crankshaft Main Bearing Set

from

$55.99
Sealed Power« parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Product Features:
  • Steel-backed bronze alloy lining with overplate
  • Popular for fatigue resistance & strength – provides conformability required for older applications
  • State-of-the-art manufacturing
  • Exacting tolerances
  • Meets or exceeds OEM specifications
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Felpro – Engine Timing Cover Repair Sleeve (Part No.16201)

Engine Timing Cover Repair Sleeve

from

$10.29
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:
  • Engine$aver Hardware cost-saving application
  • Repairs worn sealing surfaces to assure a leak free repair
  • Meets or exceeds all original equipment specifications
  • Engineered and manufactured specifically for repair applications
  • Unsurpassed quality you can trust
  • Validated for fit, form, and function
  • Validated for fit, form, and function
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Felpro – Oil Pan Gasket Set: Cork-Rubber, 4 Piece Set (Part No.OS 6566 C-3)

Oil Pan Gasket Set: Cork-Rubber, 4 Piece Set

from

$16.79
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:
  • DESIGNED FOR IMPERFECT SEALING SURFACES — Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
  • ENGINEERED TO PERFORM — Proprietary cork-rubber formulation
  • SUPERIOR SEAL — Highly conformable to accommodate for the imperfect sealing surfaces
  • EVERY PART FOR THE REPAIR — Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
  • REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road
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Sealed Power – Engine Gasket Set (Part No.260-1152)

Engine Gasket Set

from

$77.99
Sealed Power« parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Product Features:
  • Each 260 gasket set includes Fel-Pro½ gaskets (# 1 brand of gaskets)
  • Provides the exact gaskets the application requires.
  • State-of-the-art manufacturing
  • Exacting tolerances
  • Meets or exceeds OEM specifications
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Imperial – Econo-Kool® Engine Oil Cooler (Part No.240459)

Econo-Kool® Engine Oil Cooler

from

$141.99
Product Features:
  • Imperial Econo-Kool« engine oil cooler kit
  • Size: 3/4″ x 7-1/2″ x 12-1/2″
  • Light-duty applications
  • All except Chevrolet V8 applications
  • Size: 3/4 in. x 7-1/2 in. x 12-1/2 in.
  • Light duty applications
  • All except Chevrolet V8 applications
  • Lightweight construction with high-efficiency turbulators
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Spartan – Engine Long Block; Chry 318 88-90 Engine (Part No.DD38)

Engine Long Block; Chry 318 88-90 Engine

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$1948.99
Remanufactured Engines are fully disassembled; heads, blocks, cranks & cams are machined & wear parts are replaced. Each engine is individually tested after assembly to assure compression, oil pressure and water jacket integrity.

Product Features:
  • Each engine we remanufacture is essentially reverse engineered – in part to discover original factory deficiencies. If possible, our seasoned R&D personnel & QC experts make improvements. Why shouldn’t our engine last longer than your first?
  • Engines come with installation gasket set & oil pump unless noted otherwise. If we have important installation information it will be included on tags or in the paperwork packaged with your engine.
  • Engines are securely packaged in a recyclable container that will also protect your core on the return trip. Our nationwide warehouse network means speedy delivery.
  • Each engine is remanufactured with quality OE level components not “white” box generic parts that may or may not satisfy your needs and expectations. When you use the best you get the best results and satisfaction.
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Melling – Engine Oil Priming Tool (Part No.PT10)

Engine Oil Priming Tool

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$16.99
Melling Engine Oil Priming Tools were developed as a way for engine builders to safely pre-prime the engine with oil prior to the initial engine startup. The Priming tool, with the use of a standard drill circulates oil to all of the critical areas of the new engine quickly and safely.

Product Features:
  • Priming tool circulates oil through critical areas of a new engine before engine start up
  • Manufactured from high quality materials for consistent durable wear
  • Precision engineered for optimum fit and function
  • Designed for long-life and worry-free performance
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Felpro – Engine Gasket Set (Part No.FS 8553 PT-7)

Engine Gasket Set

from

$94.99
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:
  • PROPRIETARY COATING — Nonstick anti-friction coating seals small surface scratches and imperfections
  • SEALING TECHNOLOGIES — Exclusive sealing innovations and technologies with proprietary materials and unique design features to ensure a superior seal for your repair
  • NO RETORQUE DESIGN — Steel core helps eliminate the need for retorquing head bolts
  • STRONG AND DURABLE — Features graphite or reinforced fiber facing material and steel armor for strength and durability
  • DESIGNED FOR IMPERFECT SEALING SURFACES — Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
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Sealed Power – Engine Connecting Rod Bearing (Part No.2130CP)

Engine Connecting Rod Bearing

from

$6.79
Sealed Power« parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Product Features:
  • Steel-backed bronze alloy lining with overplate
  • Popular for fatigue resistance & strength
  • Provides conformability required for older apps
  • Our standard material is comparable to competitors performance bearing
  • Note – This material offers less resistance to wear & corrosion than other materials.
  • Utilizes ISO & QS certified manufacturing
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Melling – Stock Replacement Type Oil Pump Intermediate Shaft (Part No.IS-72)

Stock Replacement Type Oil Pump Intermediate Shaft

from

$77.99
A new Melling oil pump shaft is recommended to complete every new oil pump install. Melling offers a complete line of high quality shafts for domestic and import pump applications. A new oil pump shaft is necessary due to possible metal fatigue, cracking

Product Features:
  • Manufactured from high quality materials for consistent durable wear
  • Precision engineered for optimum fit and function
  • Designed for long-life and worry-free performance
  • Meets or exceeds original equipment specifications
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Sealed Power – Oil Pump Screen Assy. (Part No.224-1166)

Oil Pump Screen Assy.

from

$117.99
Sealed Power« parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Product Features:
  • Manufactured to fit a specific application
  • Provides the lubrication oil as well as protection for your oil pump from materials that find their way into the engine oil supply system
  • It is recommended that a new properly installed oil pump pick-up tube/screen be a part of every oil pump installation
  • Oil pump screen assemblies are manufactured under strict quality guidelines
  • Utilizes ISO & QS certified manufacturing
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Spectre – Dipstick; Billet Handle (Part No.5744)

Dipstick; Billet Handle

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$22.79
Spectre’s gold iridite-plated finish Oil Dipsticks are available for a number of different vehicles and come in a variety of sizes, from 17 inch to 20 inches. This replacement oil dipstick has a base made to OEM specifications and markings match OEM for true accuracy, ensuring optimum fit and function. It also has a billet handle.

Product Features:
  • Markings match OEM for true accuracy
  • Base made to OEM specifications
  • Gold iridite-plated finish
  • Billet handle
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Felpro – Engine Valve Cover Gasket Set (Part No.VS 50185 C)

Engine Valve Cover Gasket Set

from

$11.99
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:
  • DESIGNED FOR IMPERFECT SEALING SURFACES — Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
  • ENGINEERED TO PERFORM — Proprietary cork-rubber formulation
  • SUPERIOR SEAL — Highly conformable to accommodate for the imperfect sealing surfaces
  • EVERY PART FOR THE REPAIR — Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
  • REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road
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Cloyes Performance – High Performance Timing Chain (Part No.9-135)

High Performance Timing Chain

from

$66.99
High Performance 3/8″ Pitch Double Roller Replacement TRUE Roller Chain. 0.250″ Roller Diameter. Heat Treated and Processed Links to Maximize Ultimate Breaking Strength while Remaining Ductile for Toughness. Pre-stressed to Increase Fatigue Life.

Product Features:
  • A timing chain synchronizes the rotation of the crankshaft and camshaft(s), ensuring proper timing of the engines valve events for each cylinder
  • Our chains are engineered and manufactured with precision pitch control for proper chain-to-sprocket tooth fitment
  • From stock replacement to high performance, Cloyes has the most complete timing chain catalog
  • Cloyes parts are CAD designed and manufactured using premium materials. Each part is extensively tested and measured for function, fitment, and durability to ensure optimal performance
  • Cloyes recommends the chain tensioner(s), sprocket(s), and guide(s) also be replaced when the chain is replaced as these components play a vital role in system stability and accurate timing
  • Refer to our online catalog for detailed application-specific information
  • Keep your engines valvetrain in perfect time with Cloyes, the world leader in timing drive systems
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1984 Dodge Diplomat Engine Parts

You count on your 1984 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 Engine Parts. With 102 Engine Parts ranging in price from $1.29 to $1,948.99, you’re sure to find everything you need for your 1984 Dodge Diplomat.

Brands matter. If you want to shop a specific Engine Parts brand, we stock 21 different brands like Sealed Power, Dorman, and Felpro. 1984 Dodge Diplomat Engine Parts start as low as $1.29!

One of the best ways to find top quality OEM or aftermarket Engine Parts is by asking professionals. Short of that, you can shop with confidence thanks to our 852 extensive product reviews on 1984 Dodge Diplomat Engine Parts. Some of the top-rated Engine Parts products we carry are Stock Replacement OE Type High Volume Oil Pump with 3.7 stars and Engine Valve Cover Gasket Set with 4.6 stars.

Did we mention you can order your Engine Parts 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 Engine Parts inventory for your 1984 Dodge Diplomat below to get started!

Top-Rated Engine Parts Brands For Your 1984 Dodge Diplomat

Trusted Engine Parts OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 1984 Dodge Diplomat running right for years to come. In our inventory you’ll find brands like Sealed Power, Dorman, Felpro, and even more.

Popular Dorman – Pik-a-Nut Engine Parts

You’ll find popular Dorman – Pik-a-Nut brand products across Freeze and Expansion Plugs. All are waiting to get your 1984 Dodge Diplomat back on the road. Some of the top-rated Dorman – Pik-a-Nut products in these categories are:
Steel Cup Expansion Plug 1-5/8 In., Height 0.500
from $2.29
(1)
Steel Cup Expansion Plug 1-5/8 In., Height 0.500
Expansion Plugs

Top-Rated Engine Parts


If are what you’re looking for, our inventory holds plenty. We stock brand Engine Parts for your 1984 Dodge Diplomat, and some of our most reviewed parts include:
Oil Seal
from $11.49
(87)
Oil Seal
Crankshaft Seals

FAQs for 1984 Dodge Diplomat Engine Parts

What are the most purchased Engine Parts for the 1984 Dodge Diplomat?

Out of 102 Engine Parts for the 1984 Dodge Diplomat, the most popular in our inventory are:
Engine Valve Lifter
from $5.99
(11)
Engine Valve Lifter
Engine Valve Lifters
Steel Cup Expansion Plug 1-1/4 In., SC, Height 0.300
from $2.49
This product is not rated
Steel Cup Expansion Plug 1-1/4 In., SC, Height 0.300
Camshaft Plugs
Stock Replacement OE Type Oil Pump
from $53.99
(18)
Stock Replacement OE Type Oil Pump
Oil Pumps

What are the top-rated 1984 Dodge Diplomat Engine Parts?

Top-rated Engine Parts for your 1984 Dodge Diplomat based on customer reviews/ratings are:
Stock Replacement OE Type High Volume Oil Pump
from $95.99
(6)
Stock Replacement OE Type High Volume Oil Pump
“Replacing another HV oil pump that had served me for 25 years.”
Engine Valve Cover Gasket Set
from $29.99
(5)
Engine Valve Cover Gasket Set
“Fit a 318 v8 perfectly. No leaks!”
Econo-Kool® Engine Oil Cooler
from $141.99
(3)
Econo-Kool® Engine Oil Cooler
“Good price perfect fit had all the parts I needed good quality”