2018 Ram 3500 Ignition Parts

Engine:

Showing parts for every engine. Select an engine to see only what fits.

The 2018 Ram 3500 has 83 ignition parts with verified fitment on this page — 6 part types and 23 brands, covering all 3 engine options (5.7L V8, 6.4L V8 and 6.7L L6 DIESEL Turbocharged). Each part includes a manufacturer part number and application notes.

On the 2018 Ram 3500, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. Most of the listed parts are Camshaft Position Sensor (25 parts), Crankshaft Position Sensor (20 parts) and Ignition Coil (20 parts). The other 3 part types cover the remaining 18 parts.

Camshaft Position Sensor

Economy

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular Fits: 5.7L V8 PC823T
🇺🇸 US 🇨🇦 CA
T-Series
View on
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DORMAN Fits: 5.7L V8 917741
🇺🇸 US 🇨🇦 CA
View on
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DORMAN Fits: 6.7L L6 DIESEL Turbocharged 917735
🇺🇸 US 🇨🇦 CA
View on
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HOLSTEIN Fits: 5.7L V8 2CAM0519
🇺🇸 US 🇨🇦 CA
View on
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HOLSTEIN Fits: 6.7L L6 DIESEL Turbocharged 2CAM0307
🇺🇸 US 🇨🇦 CA
View on
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PRENCO Fits: 5.7L V8 4E1120
🇺🇸 US 🇨🇦 CA
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PRENCO Fits: 6.7L L6 DIESEL Turbocharged 4E1038
🇺🇸 US 🇨🇦 CA
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SKP Fits: 5.7L V8 SK917741
🇺🇸 US 🇨🇦 CA
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STANDARD MOTOR PRODUCTS Fits: 6.7L L6 DIESEL Turbocharged PC590T
🇺🇸 US 🇨🇦 CA
T-Series
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UNITED MOTOR PRODUCTS Fits: 5.7L V8 CAM266
🇺🇸 US 🇨🇦 CA
View on
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VEMO Fits: 5.7L V8 V33720115
🇺🇸 US 🇨🇦 CA
View on
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Standard Replacement

Brand Part Number Markets Notes Buy
DELPHI Popular Fits: 5.7L V8 SS11381
🇺🇸 US 🇨🇦 CA
View on
Amazon
MOPAR Popular Fits: 5.7L V8 5149054AC
🇺🇸 US 🇨🇦 CA
Fits Mega CabHD 4WD
Fitment notes — MOPAR 5149054AC
Fits:
Mega CabHD 4WD
or:
Regular Cab8 Foot BedHD 4WD
or:
HEMICrew Cab Crew Cab8' BoxHD 4WD
or:
HEMICrew Cab Wheelbase 2HD 4WD
View on
Amazon
STANDARD MOTOR PRODUCTS Popular Fits: 5.7L V8 PC823
🇺🇸 US 🇨🇦 CA
View on
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STANDARD MOTOR PRODUCTS Popular Fits: 6.7L L6 DIESEL Turbocharged PC590
🇺🇸 US 🇨🇦 CA
View on
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WALKER PRODUCTS Popular Fits: 6.7L L6 DIESEL Turbocharged 2351221
🇺🇸 US 🇨🇦 CA
Sensor Only
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ASTEMO / HITACHI Fits: 5.7L V8 CPS0219
🇺🇸 US 🇨🇦 CA
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DELPHI Fits: 6.7L L6 DIESEL Turbocharged SS11916
🇺🇸 US 🇨🇦 CA
View on
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HELLA Fits: 5.7L V8 358380381
🇺🇸 US 🇨🇦 CA
Big Horn or SLT Model or Tradesman
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NTK Fits: 5.7L V8 EC0034
🇺🇸 US 🇨🇦 CA
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NTK Fits: 6.7L L6 DIESEL Turbocharged EC0327
🇺🇸 US 🇨🇦 CA
View on
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WALKER PRODUCTS Fits: 5.7L V8 2351288
🇺🇸 US 🇨🇦 CA
Sensor Only
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WALKER PRODUCTS Fits: 5.7L V8 2352407
🇺🇸 US 🇨🇦 CA
Combo Kit
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WELLS Fits: 5.7L V8 5S11768
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 6.7L L6 DIESEL Turbocharged 5S7422
🇺🇸 US 🇨🇦 CA
Mounting Bracket Included: No
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This table covers the sensors that report camshaft position to the ECU. Typical signs include a stall, a no-start, or a code for cam or crank correlation. Check the connector and the reluctor gap before replacing the sensor.

Condenser / Capacitor

Brand Part Number Markets Notes Buy
MOPAR Fits: 5.7L V8 56028644AC
🇺🇸 US 🇨🇦 CA
Fits Mega CabHD 4WD
Fitment notes — MOPAR 56028644AC
Fits:
Mega CabHD 4WD
or:
HEMIRegular Cab, 8 Foot BedHD 4WD
or:
HEMICrew Cab Crew Cab8' BoxHD 4WD
or:
HEMICrew Cab Wheelbase 2HD 4WD
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WELLS Fits: 5.7L V8 1B1018
🇺🇸 US 🇨🇦 CA
View on
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This table covers the capacitors used in this electrical or A/C circuit.

Crankshaft Position Sensor

Economy

Brand Part Number Markets Notes Buy
DORMAN Fits: 5.7L V8 907792
🇺🇸 US 🇨🇦 CA
View on
Amazon
DORMAN Fits: 6.7L L6 DIESEL Turbocharged 917735
🇺🇸 US 🇨🇦 CA
View on
Amazon
HOLSTEIN Fits: 5.7L V8 2CRK0359
🇺🇸 US 🇨🇦 CA
View on
Amazon
HOLSTEIN Fits: 6.7L L6 DIESEL Turbocharged 2CAM0307
🇺🇸 US 🇨🇦 CA
View on
Amazon
SPECTRA PREMIUM Fits: 5.7L V8 S10399
🇺🇸 US 🇨🇦 CA
View on
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SPECTRA PREMIUM Fits: 6.7L L6 DIESEL Turbocharged S10201
🇺🇸 US 🇨🇦 CA
View on
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STANDARD MOTOR PRODUCTS Fits: 6.7L L6 DIESEL Turbocharged PC590T
🇺🇸 US 🇨🇦 CA
T-Series
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ULTRA-POWER Fits: 5.7L V8 PC987
🇺🇸 US 🇨🇦 CA
View on
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UNITED MOTOR PRODUCTS Fits: 6.7L L6 DIESEL Turbocharged CAM150
🇺🇸 US 🇨🇦 CA
View on
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Standard Replacement

Brand Part Number Markets Notes Buy
DELPHI Popular Fits: 5.7L V8 SS12198
🇺🇸 US 🇨🇦 CA
View on
Amazon
MOPAR Popular Fits: 5.7L V8 68140678AB
🇺🇸 US 🇨🇦 CA
Fits Mega CabHD 4WD
Fitment notes — MOPAR 68140678AB
Fits:
Mega CabHD 4WD
or:
Regular Cab8 Foot BedHD 4WD
or:
HEMICrew Cab Crew Cab8' BoxHD 4WD
or:
HEMICrew Cab Wheelbase 2HD 4WD
View on
Amazon
STANDARD MOTOR PRODUCTS Popular Fits: 5.7L V8 PC987
🇺🇸 US 🇨🇦 CA
View on
Amazon
STANDARD MOTOR PRODUCTS Popular Fits: 6.7L L6 DIESEL Turbocharged PC590
🇺🇸 US 🇨🇦 CA
View on
Amazon
WALKER PRODUCTS Popular Fits: 6.7L L6 DIESEL Turbocharged 2351221
🇺🇸 US 🇨🇦 CA
Sensor Only
View on
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NTK Fits: 5.7L V8 EH0094
🇺🇸 US 🇨🇦 CA
View on
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NTK Fits: 6.7L L6 DIESEL Turbocharged EC0327
🇺🇸 US 🇨🇦 CA
View on
Amazon
WALKER PRODUCTS Fits: 5.7L V8 2351666
🇺🇸 US 🇨🇦 CA
Sensor Only
View on
Amazon
WALKER PRODUCTS Fits: 5.7L V8 2352407
🇺🇸 US 🇨🇦 CA
Combo Kit
View on
Amazon
WELLS Fits: 5.7L V8 5S13522
🇺🇸 US 🇨🇦 CA
View on
Amazon
WELLS Fits: 6.7L L6 DIESEL Turbocharged 5S7422
🇺🇸 US 🇨🇦 CA
Mounting Bracket Included: No
View on
Amazon

This table covers the sensors that report crankshaft position and engine speed. Typical signs include a stall, a no-start, or a code for cam or crank correlation. Check the connector and the reluctor gap before replacing the sensor.

Ignition Coil

Economy

Brand Part Number Markets Notes Buy
SKP Popular Fits: 5.7L V8 SKIC102
🇺🇸 US 🇨🇦 CA
View on
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STANDARD MOTOR PRODUCTS Popular Fits: 5.7L V8 UF504T
🇺🇸 US 🇨🇦 CA
T-Series
View on
Amazon
B&B Fits: 5.7L V8 BB2504
🇺🇸 US 🇨🇦 CA
View on
Amazon
FVP Fits: 5.7L V8 UF504F
🇺🇸 US 🇨🇦 CA
View on
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HOLSTEIN Fits: 5.7L V8 2IGC0173
🇺🇸 US 🇨🇦 CA
View on
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SPECTRA PREMIUM Fits: 5.7L V8 C693
🇺🇸 US 🇨🇦 CA
Ignition Coil Mounts to Cylinder Head
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STANDARD MOTOR PRODUCTS Fits: 5.7L V8 UF504TK8
🇺🇸 US 🇨🇦 CA
T-Series
Fitment notes — STANDARD MOTOR PRODUCTS UF504TK8
T-Series
For COP systems
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ULTRA-POWER Fits: 5.7L V8 UF504
🇺🇸 US 🇨🇦 CA
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VEMO Fits: 5.7L V8 V33700011
🇺🇸 US 🇨🇦 CA
View on
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Premium

Brand Part Number Markets Notes Buy
ASTEMO / HITACHI Popular Fits: 5.7L V8 IGC0164
🇺🇸 US 🇨🇦 CA
Coil Type: Individual
View on
Amazon
DELPHI Fits: 5.7L V8 GN10352
🇺🇸 US 🇨🇦 CA
View on
Amazon
STANDARD MOTOR PRODUCTS Fits: 5.7L V8 UF504
🇺🇸 US 🇨🇦 CA
Blue Streak
View on
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Standard Replacement

Brand Part Number Markets Notes Buy
DENSO Popular Fits: 5.7L V8 6735202
🇺🇸 US 🇨🇦 CA
Direct Ignition Coil or Coil On Plug
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Amazon
MOPAR Fits: 5.7L V8 68238603AA
🇺🇸 US 🇨🇦 CA
Sold Individually
Fitment notes — MOPAR 68238603AA
Sold Individually
Fits:
Mega CabHD 4WD
or:
Regular Cab8 Foot BedHD 4WD
or:
HEMICrew Cab Crew Cab8' BoxHD 4WD
or:
HEMICrew Cab Wheelbase 2HD 4WD
View on
Amazon
NGK Fits: 5.7L V8 48716
🇺🇸 US 🇨🇦 CA
Twin Spark Ignition System1 Coil Fires 2 Plugs
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NGK Fits: 5.7L V8 49469
🇺🇸 US 🇨🇦 CA
Twin Spark Ignition System1 Coil Fires 2 Plugs
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NGK Fits: 5.7L V8 49420
🇺🇸 US 🇨🇦 CA
Twin Spark Ignition System1 Coil Fires 2 Plugs
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UNITED MOTOR PRODUCTS Fits: 5.7L V8 COP107
🇺🇸 US 🇨🇦 CA
View on
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WALKER PRODUCTS Fits: 5.7L V8 9212093
🇺🇸 US 🇨🇦 CA
Single Coil
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WELLS Fits: 5.7L V8 5C1569
🇺🇸 US 🇨🇦 CA
Requires External Resistor: YES
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This table covers the coils that fire each spark plug. Typical signs include a misfire that follows one cylinder, a snap in damp weather, or a coil that is swollen or cracked. Swap a suspect coil with a neighbor to confirm, then replace boots that tore on the way off.

Spark Plug

Summary: Notes include pre-set gaps of 0.040", 0.041", 0.044", 0.045" and 0.054". Replacement brands in this table include NGK, BOSCH and DENSO.

Copper / Nickel

Brand Part Number Markets Notes Buy
CHAMPION Fits: 5.7L V8 446
🇺🇸 US 🇨🇦 CA
Copper PlusPre-Set Gap: 0.041"
Fitment notes — CHAMPION 446
Copper PlusPre-Set Gap: 0.041"
2 Plugs Per Cylinder RequiredOE-Recommended Gap: 0.044"
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Double Platinum (lasts up to 3x longer than Copper / Nickel)

Brand Part Number Markets Notes Buy
BOSCH Fits: 5.7L V8 8162
🇺🇸 US 🇨🇦 CA
OE Fine Wire Double PlatinumPre-Set Gap: 0.044"
Fitment notes — BOSCH 8162
OE Fine Wire Double PlatinumPre-Set Gap: 0.044"
with Dual Spark PlugsOriginal Equipment is Iridium
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Iridium (lasts up to 4x longer than Copper / Nickel)

Brand Part Number Markets Notes Buy
NGK Popular Fits: 5.7L V8 4469
🇺🇸 US 🇨🇦 CA
Iridium IXPre-Set Gap: 0.044"
Fitment notes — NGK 4469
Iridium IXPre-Set Gap: 0.044"
2 Plugs Per Cylinder RequiredOE-Recommended Gap: 0.044 in
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NGK Popular Fits: 5.7L V8 92145
🇺🇸 US 🇨🇦 CA
Laser IridiumPre-Set Gap: 0.044"
Fitment notes — NGK 92145
Laser IridiumPre-Set Gap: 0.044"
2 Plugs Per Cylinder RequiredOE-Recommended Gap: 0.044 in
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Amazon
BOSCH Fits: 5.7L V8 9673
🇺🇸 US 🇨🇦 CA
OE Fine Wire Double IridiumPre-Set Gap: 0.044"
Fitment notes — BOSCH 9673
OE Fine Wire Double IridiumPre-Set Gap: 0.044"
with Dual Spark PlugsOriginal Equipment is Iridium
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CHAMPION Fits: 5.7L V8 9055
🇺🇸 US 🇨🇦 CA
IridiumPre-Set Gap: 0.054"
Fitment notes — CHAMPION 9055
IridiumPre-Set Gap: 0.054"
2 Plugs Per Cylinder RequiredOE-Recommended Gap: 0.044"
View on
Amazon
DENSO Fits: 5.7L V8 4703
🇺🇸 US 🇨🇦 CA
Iridium TTPre-Set Gap: 0.040"
Fitment notes — DENSO 4703
Iridium TTPre-Set Gap: 0.040"
Gap 0.0402 Per Cyl.
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DENSO Fits: 5.7L V8 5343
🇺🇸 US 🇨🇦 CA
Iridium PowerPre-Set Gap: 0.044"
Fitment notes — DENSO 5343
Iridium PowerPre-Set Gap: 0.044"
Gap 0.0442 Per Cyl.
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Amazon
DENSO Fits: 5.7L V8 3417
🇺🇸 US 🇨🇦 CA
Iridium Long LifePre-Set Gap: 0.044"
Fitment notes — DENSO 3417
Iridium Long LifePre-Set Gap: 0.044"
Gap 0.0442 Per Cyl.
View on
Amazon
SKP Fits: 5.7L V8 SP1022
🇺🇸 US 🇨🇦 CA
Tapered Ground Electrode with Platinum Chip
Fitment notes — SKP SP1022
Tapered Ground Electrode with Platinum Chip
Gap: .045/1.1mmwith Dual Spark Plugs
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Platinum (lasts up to 2x longer than Copper / Nickel)

Brand Part Number Markets Notes Buy
ACDELCO Fits: 5.7L V8 20
🇺🇸 US 🇨🇦 CA
ProfessionalRapidfire
Fitment notes — ACDELCO 20
ProfessionalRapidfirePre-Set Gap: 0.045"
OE-Recommended Gap: 0.044" (IN)2 Plugs Per Cylinder Required
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BOSCH Fits: 5.7L V8 6734
🇺🇸 US 🇨🇦 CA
OE Fine Wire PlatinumPre-Set Gap: 0.044"
Fitment notes — BOSCH 6734
OE Fine Wire PlatinumPre-Set Gap: 0.044"
with Dual Spark PlugsOriginal Equipment is Iridium
View on
Amazon
NGK Fits: 5.7L V8 5018
🇺🇸 US 🇨🇦 CA
G-PowerPre-Set Gap: 0.040"
Fitment notes — NGK 5018
G-PowerPre-Set Gap: 0.040"
2 Plugs Per Cylinder RequiredOE-Recommended Gap: 0.044 in
View on
Amazon

Ruthenium (maximum durability & ignitability)

Brand Part Number Markets Notes Buy
NGK Popular Fits: 5.7L V8 96355
🇺🇸 US 🇨🇦 CA
Ruthenium HX High IgnitabilityPre-Set Gap: 0.044"
Fitment notes — NGK 96355
Ruthenium HX High IgnitabilityPre-Set Gap: 0.044"
2 Plugs Per Cylinder RequiredOE-Recommended Gap: 0.044 in
View on
Amazon

This table covers the spark plugs for this engine. Typical signs include misfire under load, rough idle, or a flashing check-engine light. Verify the gap even on pre-gapped plugs, and replace coil boots that come off a high-mileage engine.

Spark Plug / Ignition Coil Boot

Economy

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 5.7L V8 20521
🇺🇸 US 🇨🇦 CA
Federal Wire
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Standard Replacement

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 5.7L V8 SPP217E
🇺🇸 US 🇨🇦 CA
View on
Amazon

This table covers the silicone and rubber boots that insulate the coil-to-plug spark path. Typical signs include a misfire in the rain, carbon tracking on the boot, or a snap when you pop the coil off. Replace boots as a set on a high-mileage engine; one cracked boot will take the coil with it.

Buying Ignition Parts for a 2018 Ram 3500

On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.

  • Match the engine first. Every ignition part here is engine-specific; each row shows which engine(s) it fits.
  • Read the notes on each row for position, trim and spec qualifiers before you order.
  • Where labor overlaps, replace plugs and wires (or coil boots) as a set — one weak cylinder makes the whole set feel bad.
  • Cross-reference the manufacturer part number against your old part or a service-manual listing.

Start with the largest groups on this page: Camshaft Position Sensor and Crankshaft Position Sensor .

Frequently Asked Questions

How many ignition parts fit the 2018 Ram 3500?

Our catalog currently lists 83 ignition parts for the 2018 Ram 3500 across 6 subcategories and 23 brands, covering all 3 engine options (5.7L V8, 6.4L V8 and 6.7L L6 DIESEL Turbocharged). Each part is matched to the engine(s) it fits.

Do ignition parts differ between 2018 Ram 3500 engines?

Yes. Every ignition part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.

What are the signs of ignition problems on a 2018 Ram 3500?

Common symptoms include misfires under load, rough idle, flashing check-engine light, or poor starting in damp weather. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.

What spark-plug gap is listed for the 2018 Ram 3500?

Notes on this page include pre-set gaps of 0.040", 0.041", 0.044", 0.045" and 0.054". Still verify against spec — even “pre-gapped” plugs should be checked before they go in.

What should I replace at the same time?

Where labor overlaps, replace plugs and wires (or coil boots) as a set — one weak cylinder makes the whole set feel bad.

What do the market flags (US, CA, MX) on each part mean?

They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2018 Ram 3500 was originally sold in the US, the safest choice is a part marked for the US market.

How do I make sure a part fits my 2018 Ram 3500?

First match the engine — each row shows which engine(s) the part fits. Then gap matters even on “pre-gapped” plugs — verify against spec, and replace coil boots when they come off a high-mileage engine. The notes column carries position and trim qualifiers where they apply.

Other Parts for the 2018 Ram 3500

Ignition Parts for Other Ram 3500 Years

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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.