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1978 Dodge Diplomat

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1978 Dodge Diplomat Spark Plug Parts

Choose your Engine for your 1978 Dodge Diplomat

6 Cyl 3.7L 8 Cyl 5.2L 8 Cyl 5.9L

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1978 Dodge Diplomat Spark Plug 8 Cyl 5.2L Champion

Champion Copper Plus- Boxed - RN14YC
Gap 0.035in OE Type ; Plug Type RN14YC
Champion Copper Plus 405 Spark Plug (Carton of 4)
Copper Plus
Product Attributes:
- Seat Type: Flat
- Electrical Terminal Type: Non-removable Nut
- Classification: Champion Copper Plus
- Resistor Type: Yes
- Plug Type: Rn14yc
- Hex Size:
  - 0.813
  - 20.650
- Reach: 0.75
- Center Electrode Tip Material: Nickel
- Manufacturer Heat Range: 14
- Pre-Gap Size:
  - 0.035
  - 0.90
- Ground Electrode Core Material: Nickel
- Insulator Height: 0.12
Dependable performance. This Champion® spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:

14G52, 14G82, 14GR52, 4020, 4221, 44NS, 44XLO, 44XLS, 45NS, 45XLS, 46XLS, 7911, 7913, 82300317, AG82, AGR82, BP4ES, BPR2ES...VIEW MORE

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1978 - Dodge Diplomat	V	5211	8 Cyl 5.2L	318

50 In Stock

$8.08 USD

$9.70 USD


Brand	Champion
Part #	C33405
Condition	New
Warehouse	B

UPC: 037551001514

1978 Dodge Diplomat Spark Plug 6 Cyl 3.7L NGK

NGK V-Power Spark Plug
Gap 0.035" OE Equivalent Design
V-Power Spark Plug
Product Attributes:
- Seat Type: Tapered
- Electrical Terminal Type: Non-removable Nut
- Center Electrode Core Material: Copper
- Part Number: Ur4
- Hex Size: 5/8
- Reach: .46
- Center Electrode Tip Material: Nickel
- Stock Number: 6630
- Ground Electrode Tip Design: Standard
- Manufacturer Heat Range: 4
- Ground Configuration: Standard
- Pre-Gap Size: .040
- Resistance: 5000
- Insulator Height: 55.00
- Ground Electrode Core Material: Nickel
NGK Spark Plugs (U.S.A.), Inc. is the largest OE supplier and manufacturer of spark plugs for domestic and import vehicles in North America. Its OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist. With over 80 years of automotive expertise NGK has built a reputation for quality and reliability; manufacturing spark plugs for virtually every automotive, motorcycle, marine and small engine application. We are committed to be the premier partner with our customers, while maintaining original equipment standards for the highest durability and operational performance. With state-of-the-art manufacturing, inventory and distribution facilities in North America and across the globe, NGK is dedicated to providing customers with world-class products and services.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:

1052895W, 15, 16, 1765179, 18, 1835800T, 1835906T, 18C2, 18S, 19, 25, 25BP, 25C2, 25DP2, 25S, 26, 2R45TS, 2R46TS...VIEW MORE

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1978 - Dodge Diplomat	L	3687	6 Cyl 3.7L	225

52 In Stock

$7.85 USD

$9.42 USD


Brand	NGK
Part #	N126630
Condition	New
Warehouse	B

1978 Dodge Diplomat Spark Plug 6 Cyl 3.7L Champion

Champion Copper Plus- Boxed - RV17YC
Gap 0.035in OE Type ; Plug Type RV17YC
Champion Copper Plus 25 Spark Plug (Carton of 4)
Copper Plus
Product Attributes:
- Seat Type: Tapered
- Electrical Terminal Type: Removable Nut
- Classification: Champion Copper Plus
- Resistor Type: Yes
- Plug Type: Rv17yc
- Hex Size:
  - 0.625
  - 15.880
- Reach: 0.441
- Center Electrode Tip Material: Nickel
- Manufacturer Heat Range: 17
- Pre-Gap Size:
  - 0.035
  - 0.90
- Ground Electrode Core Material: Nickel
- Insulator Height: 0.12
Dependable performance. This Champion® spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
This item must be purchased in quantities of 8

This Part Fits the Following OEM/Substitute Numbers:

14RF52, 14RF62, 4091678, 4289155, 4339415, 44TS, 45TS, 46TS, 5213202S, ARF62, CR44TS, CR45TS, R44TS, R45TS, RV17YC, TR14PRU

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1978 - Dodge Diplomat	L	3687	6 Cyl 3.7L	225

50 In Stock

$7.85 USD

$9.42 USD


Brand	Champion
Part #	C3325
Condition	New
Warehouse	B

UPC: 037551000265

1978 Dodge Diplomat Spark Plug 8 Cyl 5.2L NGK

NGK V-Power Spark Plug
Gap 0.035"
V-Power Spark Plug
Product Attributes:
- Seat Type: Flat
- Electrical Terminal Type: Non-removable Nut
- Center Electrode Core Material: Copper
- Part Number: Gr4
- Hex Size: 13/16
- Reach: .75
- Center Electrode Tip Material: Nickel
- Stock Number: 2635
- Ground Electrode Tip Design: Standard
- Manufacturer Heat Range: 4
- Ground Configuration: Standard
- Pre-Gap Size: .040
- Resistance: 5000
- Insulator Height: 55.00
- Ground Electrode Core Material: Nickel
NGK Spark Plugs (U.S.A.), Inc. is the largest OE supplier and manufacturer of spark plugs for domestic and import vehicles in North America. Its OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist. With over 80 years of automotive expertise NGK has built a reputation for quality and reliability; manufacturing spark plugs for virtually every automotive, motorcycle, marine and small engine application. We are committed to be the premier partner with our customers, while maintaining original equipment standards for the highest durability and operational performance. With state-of-the-art manufacturing, inventory and distribution facilities in North America and across the globe, NGK is dedicated to providing customers with world-class products and services.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:

1765194, 2585, 2635, 3031, 3205, 3206, 3207, 405, 41-813, 4404, 65, 65BP, 65DP2, 7506, 7507, 7512, 7513, 7522...VIEW MORE

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1978 - Dodge Diplomat	V	5211	8 Cyl 5.2L	318

70 In Stock

$7.85 USD

$9.42 USD


Brand	NGK
Part #	N122635
Condition	New
Warehouse	B

1978 Dodge Diplomat Spark Plug 8 Cyl 5.9L Autolite

Autolite 65 Copper Resistor Spark Plug
OE Style; .035 Gap
Copper Resistor Spark Plug
Product Attributes:
- Center Electrode Design: Standard / Regular
- Seat Type: Flat
- Electrical Terminal Type: Stud
- Ground Electrode Tip Material: Nickel
- Center Electrode Core Material: Copper
- Resistor Type: Yes
- Insulator Material: Ceramic
- Hex Size:
  - 13/16"
  - 21
- Reach:
  - 0.750
  - 19.5
- Center Electrode Tip Material: Nickel
- Ground Electrode Tip Design: Tapered
- Insulator Type: Mid Projection
- Pre-Gap Size:
  - 0.035
  - 0.90
- Resistance: 4000
- Ground Electrode Core Material: Nickel
Autolite® Copper Spark Plugs are manufactured to deliver quick starts, improved fuel economy and smooth acceleration. Autolite® spark plugs are the best alternative to OE spark plugs, offering OE form, fit and function for all makes and models, both foreign and domestic, at a value price. Autolite provides the automotive aftermarket and Original Equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:

2128, 3021, 38, 44NS, 80028, AG42

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1978 - Dodge Diplomat	V	-	8 Cyl 5.9L	360

98 In Stock

$7.86 USD

$9.43 USD


Brand	Autolite
Part #	A7765
Condition	New
Warehouse	B

UPC: 009100000651

1978 Dodge Diplomat Spark Plug 8 Cyl 5.2L NGK

NGK G-Power Platinum Spark Plug
Gap 0.035"
G-Power Spark Plug
Product Attributes:
- Seat Type: Flat
- Electrical Terminal Type: Non-removable Nut
- Center Electrode Core Material: Copper
- Part Number: Gr4gp
- Hex Size: 13/16
- Reach: .75
- Center Electrode Tip Material: Platinum
- Stock Number: 2763
- Ground Electrode Tip Design: Trapezoid
- Manufacturer Heat Range: 4
- Ground Configuration: Standard
- Pre-Gap Size: .040
- Resistance: 5000
- Insulator Height: 55.00
- Ground Electrode Core Material: Nickel
NGK Spark Plugs (U.S.A.), Inc. is the largest OE supplier and manufacturer of spark plugs for domestic and import vehicles in North America. Its OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist. With over 80 years of automotive expertise NGK has built a reputation for quality and reliability; manufacturing spark plugs for virtually every automotive, motorcycle, marine and small engine application. We are committed to be the premier partner with our customers, while maintaining original equipment standards for the highest durability and operational performance. With state-of-the-art manufacturing, inventory and distribution facilities in North America and across the globe, NGK is dedicated to providing customers with world-class products and services.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:

19238478, 2763, 3031, 3230, 3240, 3405, 3405-2, 4037, 4237, 7031-2, 8118, AP65, APP65, W14EXR-ZU, W14EXZU, WR8LPP33X, WR9LP, WR9LP+...VIEW MORE

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1978 - Dodge Diplomat	V	5211	8 Cyl 5.2L	318

9 In Stock

$10.88 USD

$13.06 USD


Brand	NGK
Part #	N122763
Condition	New
Warehouse	B

1978 Dodge Diplomat Spark Plug Denso

Susciter Fiche Iridium TT
Gap 0.040 Iridium TT - Ultimate Endurance and Power, 0.4mm Iridium and 0.7mm Platinum Twin-Tip Technology
Susciter Fiche Iridium TT
Iridium TT
Product Attributes:
- Hex Size: 16.0
- Reach: 11.60
- Center Electrode Tip Material: Iridium
- Seat Type: Tapered
- Ground Electrode Tip Design: Platinum Twin-tip
- Center Electrode Core Material: Copper
- Ground Configuration: Twin-tip
- Pre-Gap Size: 1.0
- Resistance: 5000
- Ground Electrode Core Material: Nickel
Durability of an OE style plug combined with Power & Torque of high performance.
Suggested Purchase Quantity: 4
- Most jobs typically require 4 of this item.

This Part Fits the Following OEM/Substitute Numbers:

19208523, 19300383, 19300873, 19301654, 19302742, 19310656, 4289 155, 5613302, 5613794, 5613842, 5613867, 5613877, 5613935, 5613956, 5613957, 5614229, 5614243, 88901021...VIEW MORE

Additional Fitment Information:

Vehicle
1978 - Dodge Diplomat

2 In Stock

$13.66 USD

$16.39 USD


Brand	Denso
Part #	D454715
Condition	New
Warehouse	B

UPC: 042511047150

1978 Dodge Diplomat Spark Plug 6 Cyl 3.7L E3 Spark Plug

Resistor; 5/8 in. Hex Size; 0.460 in. Thread Reach; 14mm Thread Diameter; Taper Seat; DiamondFIRE Tip w/Fixed Gap;Plug Gap Not Adjustable
Premium Automotive Spark Plug; Resistor; 5/8 in. Hex Size; 0.460 in. Thread Reach; 14mm Thread Diameter; Taper Seat; DiamondFIRE Tip w/Fixed Gap;
Premium Automotive Spark Plug
Product Attributes:
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: This Product Can Expose You To Chemicals; Including Chromium; Which Is Know To The State Of California To Cause Cancer Or Birth Defects Or Other Reproductive Harm. For More Information; Visit Www.p65warnings.ca.gov
Features:
- Patented DiamondFIRE Ground Electrode
- Edge-To-Edge Ground Electrode Out Performs Other Plug Designs
- E3 Equipped Engines Can Minimize Venting Of Unburned Fuel
- Burn Fuel More Efficiently By Burning Fuel More Completely
- Provide A Like-New Performance For The Life Of The Plug
- The Most Environmentally-Friendly Plug Available
E3 Spark Plugs are the product of years of fundamental research in the combustion field. The unique patented ground electrode configuration increases the amount of combustion pressure created during each power stroke of the engine, which results in a marked increase in power output, fuel economy, and reduced emissions in all gasoline engines. E3's DiamondFire edge to edge ground electrode provides maximum performance with increased efficiency and a faster more complete burn.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.

This Part Fits the Following OEM/Substitute Numbers:

1, 17, 18, 19, 2, 2018, 2025, 2037, 2079, 2096, 2406, 2416, 25, 26, 2841, 286, 2869, 3025...VIEW MORE

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1978 - Dodge Diplomat	L	3687	6 Cyl 3.7L	225

1 In Stock

$43.70 USD

$52.44 USD


Brand	E3 Spark Plug
Part #	E47E3.42
Condition	New
Warehouse	B

1978 Dodge Diplomat Spark Plug 6 Cyl 3.7L Autolite

Autolite AP26 Platinum Spark Plug
.035 Gap
Platinum Spark Plug
Product Attributes:
- Center Electrode Design: Standard / Regular
- Seat Type: Tapered
- Electrical Terminal Type: Stud
- Ground Electrode Tip Material: Nickel
- Center Electrode Core Material: Platinum
- Resistor Type: Yes
- Insulator Material: Ceramic
- Hex Size: 5/8"
- Reach:
  - 0.433
  - 11.0
- Center Electrode Tip Material: Platinum
- Ground Electrode Tip Design: Tapered
- Insulator Type: Mid Projection
- Pre-Gap Size:
  - 0.045
  - 1.10
- Resistance: 4000
- Ground Electrode Core Material: Nickel
Autolite® Platinum Spark Plugs are manufactured to deliver greater durability compared to standard copper plugs. Autolite® Platinum Spark Plugs provide easier starts, quicker acceleration, and improved fuel economy. Autolite® spark plugs are the best alternative to OE spark plugs, offering OE form, fit and function for all makes and models, both foreign and domestic, at a value price. Autolite provides the automotive aftermarket and original equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:

25, 41-905, 4112, 5020, AF52, BPR4FS

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1978 - Dodge Diplomat	L	3687	6 Cyl 3.7L	225

48 In Stock

$9.48 USD

$11.38 USD


Brand	Autolite
Part #	A77AP26
Condition	New
Warehouse	B

UPC: 009100252456

1978 Dodge Diplomat Spark Plug 6 Cyl 3.7L Autolite

Autolite XP26 Iridium XP Spark Plug
Iridium Enhanced Center Electrode. Proprietary V-trimmed Platinum side wire. 0.6mm finewire design. .035 Gap
Iridium Spark Plug
Product Attributes:
- Center Electrode Design: Fine Wire
- Seat Type: Tapered
- Electrical Terminal Type: Stud
- Ground Electrode Tip Material: Platinum
- Center Electrode Core Material: Platinum
- Resistor Type: Yes
- Insulator Material: Ceramic
- Hex Size: 5/8"
- Reach:
  - 0.433
  - 11.0
- Center Electrode Tip Material: Iridium
- Ground Electrode Tip Design: Tapered
- Insulator Type: Mid Projection
- Pre-Gap Size:
  - 0.045
  - 1.10
- Resistance: 4000
- Ground Electrode Core Material: Nickel
Autolite® Iridium XP Enhanced Alloy Technology™ Spark Plugs is one of the brand's most technologically advanced spark plugs ever. These spark plugs provide better durability and a more focused ignition for better overall ignitability and optimum performance. Autolite® spark plugs are the best alternative to OE spark plugs, offering OE form, fit and function for all makes and models, both foreign and domestic, at a value price. Autolite provides the automotive aftermarket and original equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
This item must be purchased in quantities of 4