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Direct Fit Horn - High Tone
Replacement
Part Number: REPC502504
Vehicle Info Required to Guarantee Fit
$16.44
Vehicle Fitment
  • 1977 - 1981 Dodge Diplomat Base 8 Cyl 5.2L
  • 1977 - 1983 Dodge Diplomat Medallion 8 Cyl 5.2L
  • 1978 Dodge Diplomat S 6 Cyl 3.7L
  • 1978 Dodge Diplomat S 8 Cyl 5.2L
  • 1978 - 1979 Dodge Diplomat Base 8 Cyl 5.9L
  • 1978 - 1979 Dodge Diplomat Medallion 8 Cyl 5.9L
  • 1978 - 1981 Dodge Diplomat Base 6 Cyl 3.7L
  • 1978 - 1983 Dodge Diplomat Medallion 6 Cyl 3.7L
  • 1979 Dodge Diplomat Salon 8 Cyl 5.9L
  • 1979 - 1983 Dodge Diplomat Salon 6 Cyl 3.7L
  • 1979 - 1989 Dodge Diplomat Salon 8 Cyl 5.2L
  • 1981 Dodge Diplomat Sport 6 Cyl 3.7L
  • 1984 - 1989 Dodge Diplomat SE 8 Cyl 5.2L
  • 1985 Dodge Diplomat All Submodels All Engines
Product Details
Notes : High Tone, With Mounting Bracket, 2 Male Blade TerminalQuantity Sold : Sold individuallyWarranty : 1-year unlimited-mileage warranty
Direct Fit Horn - Low Tone
Replacement
Part Number: REPC502505
Vehicle Info Required to Guarantee Fit
$13.50
Vehicle Fitment
  • 1977 - 1981 Dodge Diplomat Base 8 Cyl 5.2L
  • 1977 - 1983 Dodge Diplomat Medallion 8 Cyl 5.2L
  • 1978 Dodge Diplomat S 6 Cyl 3.7L
  • 1978 Dodge Diplomat S 8 Cyl 5.2L
  • 1978 - 1979 Dodge Diplomat Base 8 Cyl 5.9L
  • 1978 - 1979 Dodge Diplomat Medallion 8 Cyl 5.9L
  • 1978 - 1981 Dodge Diplomat Base 6 Cyl 3.7L
  • 1978 - 1983 Dodge Diplomat Medallion 6 Cyl 3.7L
  • 1979 Dodge Diplomat Salon 8 Cyl 5.9L
  • 1979 - 1983 Dodge Diplomat Salon 6 Cyl 3.7L
  • 1979 - 1989 Dodge Diplomat Salon 8 Cyl 5.2L
  • 1981 Dodge Diplomat Sport 6 Cyl 3.7L
  • 1984 - 1989 Dodge Diplomat SE 8 Cyl 5.2L
Product Details
Notes : Low ToneQuantity Sold : Sold individuallyWarranty : 1-year unlimited-mileage warranty
Direct Fit Horn - Tone
Replacement
Part Number: SET-REPC502504-2
Vehicle Info Required to Guarantee Fit
$28.44
Vehicle Fitment
  • 1977 - 1981 Dodge Diplomat Base 8 Cyl 5.2L
  • 1977 - 1983 Dodge Diplomat Medallion 8 Cyl 5.2L
  • 1978 Dodge Diplomat S 6 Cyl 3.7L
  • 1978 Dodge Diplomat S 8 Cyl 5.2L
  • 1978 - 1979 Dodge Diplomat Base 8 Cyl 5.9L
  • 1978 - 1979 Dodge Diplomat Medallion 8 Cyl 5.9L
  • 1978 - 1981 Dodge Diplomat Base 6 Cyl 3.7L
  • 1978 - 1983 Dodge Diplomat Medallion 6 Cyl 3.7L
  • 1979 Dodge Diplomat Salon 8 Cyl 5.9L
  • 1979 - 1983 Dodge Diplomat Salon 6 Cyl 3.7L
  • 1979 - 1989 Dodge Diplomat Salon 8 Cyl 5.2L
  • 1981 Dodge Diplomat Sport 6 Cyl 3.7L
  • 1984 - 1989 Dodge Diplomat SE 8 Cyl 5.2L
  • 1985 Dodge Diplomat All Submodels All Engines
Product Details
Components : (2) HornsQuantity Sold : Set of 2Warranty : 1-year unlimited-mileage warranty
Heater Valve - Direct Fit, Sold individually
Replacement
Part Number: RD38310004
Vehicle Info Required to Guarantee Fit
$14.88
Vehicle Fitment
  • 1977 - 1981 Dodge Diplomat Base 8 Cyl 5.2L
  • 1977 - 1983 Dodge Diplomat Medallion 8 Cyl 5.2L
  • 1978 Dodge Diplomat S 6 Cyl 3.7L Without AC
  • 1978 Dodge Diplomat S 8 Cyl 5.2L Without AC
  • 1978 - 1979 Dodge Diplomat Base 8 Cyl 5.9L
  • 1978 - 1979 Dodge Diplomat Medallion 8 Cyl 5.9L
  • 1978 - 1981 Dodge Diplomat Base 6 Cyl 3.7L
  • 1978 - 1983 Dodge Diplomat Medallion 6 Cyl 3.7L
  • 1979 Dodge Diplomat Salon 8 Cyl 5.9L Without AC
  • 1979 - 1983 Dodge Diplomat Salon 6 Cyl 3.7L
  • 1979 - 1983 Dodge Diplomat Salon 8 Cyl 5.2L
  • 1981 Dodge Diplomat Sport 6 Cyl 3.7L
Product Details
Warranty : 1-year unlimited-mileage warrantyQuantity Sold : Sold individuallyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Ignition Coil - Sold individually
Replacement
Part Number: REPO504601
Vehicle Info Required to Guarantee Fit
$20.36
Vehicle Fitment
  • 1977 - 1978 Dodge Diplomat Base 8 Cyl 5.2L
  • 1977 - 1978 Dodge Diplomat Medallion 8 Cyl 5.2L
  • 1978 Dodge Diplomat Base 6 Cyl 3.7L
  • 1978 Dodge Diplomat Base 8 Cyl 5.9L
  • 1978 Dodge Diplomat Medallion 6 Cyl 3.7L
  • 1978 Dodge Diplomat Medallion 8 Cyl 5.9L
  • 1978 Dodge Diplomat S 6 Cyl 3.7L
  • 1978 Dodge Diplomat S 8 Cyl 5.2L
Product Details
Configuration : 2-Prong Stud Male Terminal; 1 Female ConnectorQuantity Sold : Sold individuallyWarranty : 1-year unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Oxygen Sensor - 4-Wire, Heated
Replacement
Part Number: USOS-4000
Vehicle Info Required to Guarantee Fit
$22.36
Vehicle Fitment
  • 1986 - 1989 Dodge Diplomat All Submodels All Engines
Product Details
Notes : Heated; Designed to fit screw-in type bungs; May not fit with flanges; Includes Butt type connectors, without plugType : 4-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : UniversalWire Length : 5.91 in. Wire LengthMounting Style : Threaded-in Mounting StyleWarranty : 1-year unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Universal Oxygen Sensor, Heated, 4-Wire, Set of 2
Replacement
Part Number: SET-USOS-4000-2
Vehicle Info Required to Guarantee Fit
$42.49
Vehicle Fitment
  • 1986 - 1989 Dodge Diplomat All Submodels All Engines
Product Details
Notes : Designed to fit screw-in type bungs; May not be compatible with flangesComponents : (2) Oxygen SensorsType : 4-wireQuantity Sold : Set of 2Recommended Use : OE ReplacementProduct Fit : UniversalWire Length : 5.91 in. Wire LengthMounting Style : Threaded-in Mounting StyleWarranty : 1-year unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Universal Oxygen Sensor, Heated, 4-Wire, Set of 3
Replacement
Part Number: SET-USOS-4000-3
Vehicle Info Required to Guarantee Fit
$63.73
Vehicle Fitment
  • 1986 - 1989 Dodge Diplomat All Submodels All Engines
Product Details
Notes : Designed to fit screw-in type bungs; May not be compatible with flangesComponents : (3) Oxygen SensorsType : 4-wireQuantity Sold : Set of 3Recommended Use : OE ReplacementProduct Fit : UniversalWire Length : 5.91 in. Wire LengthMounting Style : Threaded-in Mounting StyleWarranty : 1-year unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Universal Oxygen Sensor, Heated, 4-Wire, Set of 4
Replacement
Part Number: SET-USOS-4000-4
Vehicle Info Required to Guarantee Fit
$84.97
Vehicle Fitment
  • 1986 - 1989 Dodge Diplomat All Submodels All Engines
Product Details
Notes : Designed to fit screw-in type bungs; May not be compatible with flangesComponents : (4) Oxygen SensorsType : 4-wireQuantity Sold : Set of 4Recommended Use : OE ReplacementProduct Fit : UniversalWire Length : 5.91 in. Wire LengthMounting Style : Threaded-in Mounting StyleWarranty : 1-year unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Oxygen Sensor - 3-Wire, Heated
Replacement
Part Number: USOS-3000
Vehicle Info Required to Guarantee Fit
$27.26
Vehicle Fitment
  • 1977 - 1981 Dodge Diplomat Base 8 Cyl 5.2L
  • 1977 - 1983 Dodge Diplomat Medallion 8 Cyl 5.2L
  • 1978 Dodge Diplomat S 6 Cyl 3.7L
  • 1978 Dodge Diplomat S 8 Cyl 5.2L
  • 1978 - 1979 Dodge Diplomat Base 8 Cyl 5.9L
  • 1978 - 1979 Dodge Diplomat Medallion 8 Cyl 5.9L
  • 1978 - 1981 Dodge Diplomat Base 6 Cyl 3.7L
  • 1978 - 1983 Dodge Diplomat Medallion 6 Cyl 3.7L
  • 1979 Dodge Diplomat Salon 8 Cyl 5.9L
  • 1979 - 1983 Dodge Diplomat Salon 6 Cyl 3.7L
  • 1979 - 1989 Dodge Diplomat Salon 8 Cyl 5.2L
  • 1981 Dodge Diplomat Sport 6 Cyl 3.7L
  • 1984 - 1989 Dodge Diplomat SE 8 Cyl 5.2L
Product Details
Notes : Heated; Includes Butt type connectors, without plugType : 3-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : UniversalWire Length : 6.69 in. Wire LengthMounting Style : Threaded-in Mounting StyleWarranty : 1-year unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Oxygen Sensor - 1-Wire, Non-Heated
Replacement
Part Number: USOS-1000
Vehicle Info Required to Guarantee Fit
$17.22
Vehicle Fitment
  • 1986 - 1989 Dodge Diplomat SE 8 Cyl 5.2L
  • 1986 - 1989 Dodge Diplomat Salon 8 Cyl 5.2L
Product Details
Notes : Unheated; Includes: Includes Butt type connectors, without plugType : 1-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : UniversalWire Length : 6.3 in. Wire LengthMounting Style : Threaded-in Mounting StyleWarranty : 1-year unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Universal Oxygen Sensor, Unheated, 1-Wire, Set of 2
Replacement
Part Number: SET-USOS-1000-2
Vehicle Info Required to Guarantee Fit
$32.72
Vehicle Fitment
  • 1986 - 1989 Dodge Diplomat SE 8 Cyl 5.2L
  • 1986 - 1989 Dodge Diplomat Salon 8 Cyl 5.2L
Product Details
Components : (2) Oxygen SensorsType : 1-wireQuantity Sold : Set of 2Recommended Use : OE ReplacementProduct Fit : UniversalWire Length : 6.3 in. Wire LengthMounting Style : Threaded-in Mounting StyleWarranty : 1-year unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Oxygen Sensor - 2-Wire, Non-Heated
Replacement
Part Number: USOS-2000
Vehicle Info Required to Guarantee Fit
$16.66
Vehicle Fitment
  • 1986 - 1989 Dodge Diplomat All Submodels All Engines
Product Details
Notes : Unheated; Includes: Includes Butt type connectors, without plugType : 2-wireQuantity Sold : Sold individuallyRecommended Use : OE ReplacementProduct Fit : UniversalWire Length : 6.3 in. Wire LengthMounting Style : Threaded-in Mounting StyleWarranty : 1-year unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Catalytic Converter - 47-State Legal (Cannot ship to CA, NY or ME) - Front
Vehicle Info Required to Guarantee Fit
$186.10
Vehicle Fitment
  • 1979 - 1981 Dodge Diplomat Base 6 Cyl 3.7L
  • 1979 - 1983 Dodge Diplomat Medallion 6 Cyl 3.7L
  • 1979 - 1983 Dodge Diplomat Salon 6 Cyl 3.7L
  • 1981 Dodge Diplomat Sport 6 Cyl 3.7L
Product Details
Location : FrontNotes : With air tube port provisionSeries : Davico Exact FitEmissions : 47-State Legal (Cannot ship to CA, NY or ME)Recommended Use : OE ReplacementQuantity Sold : AssemblyTube Material : Aluminized Steel TubeProduct Fit : Direct FitDimensions : 23 in. Overall LengthIncludes : GasketsOxygen Sensor Included : NoAnticipated Ship Out Time : 4-5 business daysWarranty : 2-year or 25,000-mile Davico limited warranty on catalyst emission properties and 5-year or 50,000-mile limited warranty on tube, shell and welds
A/C Compressor Sold individually With clutch, 2-Groove Pulley
Vehicle Info Required to Guarantee Fit
$240.51
Vehicle Fitment
  • 1979 Dodge Diplomat Base 8 Cyl 5.9L
  • 1979 Dodge Diplomat Medallion 8 Cyl 5.9L
  • 1979 Dodge Diplomat Salon 8 Cyl 5.9L
  • 1979 - 1981 Dodge Diplomat Base 6 Cyl 3.7L
  • 1979 - 1981 Dodge Diplomat Base 8 Cyl 5.2L
  • 1979 - 1983 Dodge Diplomat Medallion 6 Cyl 3.7L
  • 1979 - 1983 Dodge Diplomat Medallion 8 Cyl 5.2L
  • 1979 - 1983 Dodge Diplomat Salon 6 Cyl 3.7L
  • 1979 - 1989 Dodge Diplomat Salon 8 Cyl 5.2L
  • 1981 Dodge Diplomat Sport 6 Cyl 3.7L
  • 1984 - 1989 Dodge Diplomat SE 8 Cyl 5.2L
Product Details
Condition : NewClutch Included : With clutchNumber of Grooves : 2-Groove PulleyQuantity Sold : Sold individuallyWarranty : 1-year limited warranty
Page 1 of 552 | Showing 1 - 15 of 8271 results

Dodge Diplomat Customer Reviews

Direct Fit Horn - Low Tone
Jun 09, 2020
Great product
Great product but didn’t have directions one was a ground and one was to the horn was easy to figure out but would of been nice to have a card saying how to hook it up
Robert Robert
VERIFIED PURCHASER
Purchased on May 20, 2020
Direct Fit Horn - Low Tone
May 15, 2020
Fits Perfect
Fits 99 Ford ranger the extra terminal is for ground.
William Ballard
VERIFIED PURCHASER
Purchased on Apr 30, 2020
Two thumbs up
Rita Bridges
VERIFIED PURCHASER
Purchased on Apr 16, 2020

Dodge Diplomat Guides

Basic Dodge Diplomat Maintenance Tips

Your Dodge Diplomat may already be old and frail, but you still want it in its best. Being able to keep the value of your classic car gives that unexplainable fulfillment. The catch, though, is that classic car maintenance can really be time consuming, especially if damage has gone way too severe. A wise owner will not let problematic car parts end up that way because that will surely cost him big bucks. Give your old buddy its well-deserved TLC by strictly following proper maintenance schedule. Here are three ways:

  • Give attention to your transmission.

Besides the engine, the transmission system works the hardest, thus it is also among those that get the most damage with the most frequency. The many moving components of the system deal with so much stress brought by heat and friction resulting from transferring power from the engine to the driveshaft. Major issues arise when it's not given the maintenance that it requires, especially that your Dodge Diplomat has already fought hard with long years of running.

Give attention to the main parts of your transmission system, including the filter. Make sure that it effectively blocks all impurities that go with the transmission oil. The usual problem of this part is getting clogged, and the solution is simple cleaning. If it's already worn, get a quality replacement that would help increase the mileage of the oil and the rest of the vital transmission parts. Keep your senses sharp for any signs of transmission problems such as grinding, burning smell, slipping transmission, and dragging clutch.

  • Don't deprive your battery of the care it deserves.

Car battery issues often root from problematic terminals and clamp connections. But did you know that these are oftentimes caused by corrosion? If you have them regularly checked, corroded battery terminals and clamp connections will no longer add to other mechanical malfunctions needing more attention. Next time you pop your hood up, wipe off any acid and dirt that could be sitting right on your battery.

Low charge is also a common battery problem that has to be handled well. Do not let it get drained frequently because that will lead to total failure. Also watch your driving habits as that create great impact on the longevity of the battery as well. Short-distance drives, for instance, deprive periodic fully saturated electric charge. Furthermore, avoid loading your car with so many electric-powered accessories in order to save the battery from so many burdens.

  • Do not take your spark plug for granted.

The spark plug is outright necessary right upon starting the engine of your Dodge Diplomat. But because the carburetor, injection system, and the electrical system have direct impact on the spark plug, it gets busted almost as frequently as the tires get worn. Although indispensable, it is often taken for granted, thus ending up inoperable.

For a classic car, having almost every system stressed through the years of running, expect your spark plug to require servicing or replacement earlier than the recommended interval specified in the owner's manual. Be wise to also do regular inspection, checking for carbon fouling, terminal nut wear, flash-over, corona stain, damaged metal shell, faulty firing end, and plug socket problems.

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P0304 Code: Cylinder 4 Misfire Detected
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