2018 Ram 4500 Electrical Bulb & Socket Parts

Engine:

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

This page lists 87 electrical bulb & socket parts for the 2018 Ram 4500, across 17 part types, covering both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. Every part shows its brand, manufacturer part number and fitment notes.

On the 2018 Ram 4500, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination. 35 parts of the 87 listed are Headlamp Bulb (13 parts), Fog / Driving Lamp Bulb (11 parts) and Headlamp Socket (11 parts). The other 14 part types cover the remaining 52 parts.

Back Up / Reverse Lamp Bulb

Brand Part Number Markets Notes Buy
HELLA Fits: 6.4L V8 3157NA
🇺🇸 US 🇨🇦 CA
IncandescentNatural Amber
Fitment notes — HELLA 3157NA
IncandescentNatural Amber27/7WAverage Rated Life: 1200.0 HRBrightness: 24.0 CPSocket Type Bulb: W2.5x16q
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PEAK Fits: 6.4L V8 7440
🇺🇸 US 🇨🇦 CA
Backup LightBulb
Fitment notes — PEAK 7440
Backup LightBulbProfessional Boxwith Projector Headlamps
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This table covers the bulbs in the reverse lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.

Brake Light Bulb - High Mount

Extended Life

Brand Part Number Markets Notes Buy
HELLA Fits: 6.4L V8 921LL
🇺🇸 US 🇨🇦 CA
IncandescentLong Life
Fitment notes — HELLA 921LL
IncandescentLong LifeSocket Type Bulb: W2.1x9.5dLong Life
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HELLA Fits: 6.4L V8 DE3175LL
🇺🇸 US 🇨🇦 CA
IncandescentLong Life
Fitment notes — HELLA DE3175LL
IncandescentLong LifeSocket Type Bulb: SV8.5-8Long Life
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WAGNER Fits: 6.4L V8 921LL
🇺🇸 US 🇨🇦 CA
Long LifeWedge Base
Fitment notes — WAGNER 921LL
Long LifeWedge Base17.920 WattBulb Type: T-5 Bulb 5/8 (16mm) Diameter
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Standard Replacement

Brand Part Number Markets Notes Buy
HELLA Popular Fits: 6.4L V8 921
🇺🇸 US 🇨🇦 CA
IncandescentSocket Type Bulb: W2.1x9.5d
Fitment notes — HELLA 921
IncandescentSocket Type Bulb: W2.1x9.5d
W16W
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WAGNER Popular Fits: 6.4L V8 921
🇺🇸 US 🇨🇦 CA
Bulb Type: T-5 Bulb 5/8 (16mm) DiameterVoltage: 12.800 Volts (Direct Current)
Fitment notes — WAGNER 921
Bulb Type: T-5 Bulb 5/8 (16mm) DiameterVoltage: 12.800 Volts (Direct Current)Wedge Base17.920 Watt
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HELLA Fits: 6.4L V8 921NA
🇺🇸 US 🇨🇦 CA
IncandescentNatural Amber
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This table covers the bulbs in the high-mount stop lamp. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes.

Engine Compartment Light Bulb

Extended Life

Brand Part Number Markets Notes Buy
WAGNER Fits: 6.4L V8 561LL
🇺🇸 US 🇨🇦 CA
Long LifeRigid Loop Base
Fitment notes — WAGNER 561LL
Long LifeRigid Loop Base12.420 Watt
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Standard Replacement

Brand Part Number Markets Notes Buy
PHILIPS Fits: 6.4L V8 561
🇺🇸 US 🇨🇦 CA
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WAGNER Fits: 6.4L V8 561
🇺🇸 US 🇨🇦 CA
Rigid Loop Base12.420 Watt
Fitment notes — WAGNER 561
Rigid Loop Base12.420 WattBulb Type: T-3 Bulb 3/8 (9.5mm) Diameter
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This table covers the replacement bulbs for the Engine Compartment Light. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.

Fog / Driving Lamp Bulb

Extra Bright (improved visibility, but shorter life)

Brand Part Number Markets Notes Buy
WAGNER Popular Fits: 6.4L V8 9006BLX
🇺🇸 US 🇨🇦 CA
P22D Base55.000 Watt
Fitment notes — WAGNER 9006BLX
P22D Base55.000 Watt80% More Light
Frontwith Vertical Fog LightsHalogen
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PHILIPS Fits: 6.4L V8 9145CVP
🇺🇸 US 🇨🇦 CA
Crystal Vision PlatinumUp to 60% More Light
Fitment notes — PHILIPS 9145CVP
Crystal Vision PlatinumUp to 60% More LightBright White Xenon Look
Frontwithout Projector-Type Headlamps Horizontal Fog Lamps
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WAGNER Fits: 6.4L V8 9006TVX
🇺🇸 US 🇨🇦 CA
P22D Base55.000 Watt
Fitment notes — WAGNER 9006TVX
P22D Base55.000 WattHID Look
Frontwith Vertical Fog LightsHalogen
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LED (instant-on, long life, energy-saving)

Brand Part Number Markets Notes Buy
PHILIPS Fits: 6.4L V8 9145USLED
🇺🇸 US 🇨🇦 CA
Ultinon Sport LED
Fitment notes — PHILIPS 9145USLED
Ultinon Sport LED
Frontwithout Projector-Type Headlamps Horizontal Fog Lamps
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WAGNER Fits: 6.4L V8 9145LED
🇺🇸 US 🇨🇦 CA
LED
Fitment notes — WAGNER 9145LED
LED
Frontwith Horizontal Fog LightsFor Use with Fog Light
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WAGNER Fits: 6.4L V8 9006LED
🇺🇸 US 🇨🇦 CA
LED
Fitment notes — WAGNER 9006LED
LED
Frontwith Vertical Fog LightsFor Use with Fog Light
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Standard Replacement

Brand Part Number Markets Notes Buy
HELLA Popular Fits: 6.4L V8 9006
🇺🇸 US 🇨🇦 CA
HalogenSocket Type Bulb: P22D or Socket Type Bulb: PG13
Fitment notes — HELLA 9006
HalogenSocket Type Bulb: P22D or Socket Type Bulb: PG13
FrontHB4
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WAGNER Popular Fits: 6.4L V8 9006
🇺🇸 US 🇨🇦 CA
Voltage: 12.800 Volts (Direct Current)Right Angle Special Base
Fitment notes — WAGNER 9006
Voltage: 12.800 Volts (Direct Current)Right Angle Special Base55.000 Watt
Frontwith Vertical Fog LightsHalogen
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GM GENUINE Fits: 6.4L V8 9006
🇺🇸 US 🇨🇦 CA
2 Prong Connector
Fitment notes — GM GENUINE 9006
2 Prong Connector
Frontwith Projector-type HeadlampsFor Fog Use Only
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PHILIPS Fits: 6.4L V8 9145H
🇺🇸 US 🇨🇦 CA
Frontwithout Projector-Type Headlamps Horizontal Fog Lamps
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WAGNER Fits: 6.4L V8 9145
🇺🇸 US 🇨🇦 CA
Frontwith Horizontal Fog Lights
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This table covers the bulbs in the fog and driving lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.

Glove Box Light Bulb

Extended Life

Brand Part Number Markets Notes Buy
HELLA Fits: 6.4L V8 194LL
🇺🇸 US 🇨🇦 CA
IncandescentLong Life
Fitment notes — HELLA 194LL
IncandescentLong LifeSocket Type Bulb: W2.1x9.5dLong Life
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WAGNER Fits: 6.4L V8 194LL
🇺🇸 US 🇨🇦 CA
Long LifeBulb Type: T-3-1/4 Bulb 13/32 (10mm) Diameter
Fitment notes — WAGNER 194LL
Long LifeBulb Type: T-3-1/4 Bulb 13/32 (10mm) DiameterWedge Base3.780 Watt
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LED (instant-on, long life, energy-saving)

Brand Part Number Markets Notes Buy
WAGNER Fits: 6.4L V8 T10LED
🇺🇸 US 🇨🇦 CA
Tru View PLUS LED
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WAGNER Fits: 6.4L V8 194LEDW
🇺🇸 US 🇨🇦 CA
LEDGlass:Clear (T3-1/4), Number of Filaments:1, Watts:3.78 (0.16 cp), Base:Wedge (W2.1x9.5d)
Fitment notes — WAGNER 194LEDW
LEDGlass:Clear (T3-1/4), Number of Filaments:1, Watts:3.78 (0.16 cp), Base:Wedge (W2.1x9.5d)
LED BULB
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Standard Replacement

Brand Part Number Markets Notes Buy
HELLA Popular Fits: 6.4L V8 194
🇺🇸 US 🇨🇦 CA
Brightness: 2.0 CPIncandescent
Fitment notes — HELLA 194
Brightness: 2.0 CPIncandescentSocket Type Bulb: W2.1x9.5d
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WAGNER Popular Fits: 6.4L V8 194
🇺🇸 US 🇨🇦 CA
Wedge Base3.780 Watt
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This table covers the bulbs in the glove-box lamp. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.

Headlamp Bulb

Extended Life

Brand Part Number Markets Notes Buy
MOPAR Fits: 6.4L V8 L0009012LL
🇺🇸 US 🇨🇦 CA
9012LL
Fitment notes — MOPAR L0009012LL
9012LL
Fits:
RightBi-Function Halogen Projector HeadlampRegular Cab Chassis Wheelbase 3
or:
RightBi-Function Halogen Projector HeadlampRegular Cab Chassis Wheelbase 4
or:
LeftBi-Function Halogen Projector HeadlampRegular Cab Chassis Wheelbase 3
or:
RightBI-Function Halogen Projector HeadlampRegular Cab Chassis Wheelbase 2
or:
LeftBI-Function Halogen Projector HeadlampRegular Cab Chassis Wheelbase 1
or:
LeftBI-Function Halogen Projector HeadlampRegular Cab Chassis Wheelbase 2
or:
RightBI-Function Halogen Projector HeadlampCrew Cab Wheelbase 4
or:
LeftBI-Function Halogen Projector HeadlampCrew Cab Wheelbase 4
or:
RightBI-Function Halogen Projector HeadlampCrew Cab197.4" Wheelbase
or:
RightBI-Function Halogen Projector HeadlampRegular Cab Chassis Wheelbase 1
or:
LeftBI-Function Halogen Projector HeadlampCrew Cab197.4" Wheelbase
or:
LeftBI-Function Halogen Projector HeadlampRegular Cab Chassis Wheelbase 4
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WAGNER Fits: 6.4L V8 1255H11LL
🇺🇸 US 🇨🇦 CA
Long Life
Fitment notes — WAGNER 1255H11LL
Long Life
Low Beamwithout Projector HeadlightsHalogen
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Extra Bright (improved visibility, but shorter life)

Brand Part Number Markets Notes Buy
WAGNER Fits: 6.4L V8 9005TVX
🇺🇸 US 🇨🇦 CA
HID Look
Fitment notes — WAGNER 9005TVX
HID Look
High BeamHalogen
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WAGNER Fits: 6.4L V8 9005BLX
🇺🇸 US 🇨🇦 CA
Long Life80% More Light
Fitment notes — WAGNER 9005BLX
Long Life80% More Light
High BeamHalogen
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WAGNER Fits: 6.4L V8 H11BLX
🇺🇸 US 🇨🇦 CA
BritelitePGJ19-2 Base
Fitment notes — WAGNER H11BLX
BritelitePGJ19-2 Base55.000 Watt80% More Light
Low Beamwithout Projector HeadlightsHalogen
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WAGNER Fits: 6.4L V8 H11TVX
🇺🇸 US 🇨🇦 CA
Truview Plus1.733 Base
Fitment notes — WAGNER H11TVX
Truview Plus1.733 Base4.580 WattHID Look
Low Beamwithout Projector HeadlightsHalogen
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Standard Replacement

Brand Part Number Markets Notes Buy
HELLA Popular Fits: 6.4L V8 9005
🇺🇸 US 🇨🇦 CA
HalogenSocket Type Bulb: P20D
Fitment notes — HELLA 9005
HalogenSocket Type Bulb: P20D
Fits:
High BeamHB3
or:
Low BeamHB3
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WAGNER Popular Fits: 6.4L V8 9005
🇺🇸 US 🇨🇦 CA
Voltage: 12.800 Volts (Direct Current)
Fitment notes — WAGNER 9005
Voltage: 12.800 Volts (Direct Current)
High BeamHalogen
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WAGNER Popular Fits: 6.4L V8 1255H11
🇺🇸 US 🇨🇦 CA
Bulb Color: Clear
Fitment notes — WAGNER 1255H11
Bulb Color: Clear
Low Beamwithout Projector HeadlightsHalogen
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HELLA Fits: 6.4L V8 H11
🇺🇸 US 🇨🇦 CA
HalogenSocket Type Bulb: PGJ19-2 or Socket Type Bulb: PGJY19-2
Fitment notes — HELLA H11
HalogenSocket Type Bulb: PGJ19-2 or Socket Type Bulb: PGJY19-2
Low BeamH11
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MOPAR Fits: 6.4L V8 L09005HL
🇺🇸 US 🇨🇦 CA
9005
Fitment notes — MOPAR L09005HL
9005
Fits:
RightBi-Function Halogen Projector HeadlampRegular Cab Chassis Wheelbase 3
or:
RightBi-Function Halogen Projector HeadlampRegular Cab Chassis Wheelbase 4
or:
LeftBi-Function Halogen Projector HeadlampRegular Cab Chassis Wheelbase 3
or:
RightBI-Function Halogen Projector HeadlampRegular Cab Chassis Wheelbase 2
or:
LeftBI-Function Halogen Projector HeadlampRegular Cab Chassis Wheelbase 1
or:
LeftBI-Function Halogen Projector HeadlampRegular Cab Chassis Wheelbase 2
or:
RightBI-Function Halogen Projector HeadlampCrew Cab Wheelbase 4
or:
LeftBI-Function Halogen Projector HeadlampCrew Cab Wheelbase 4
or:
RightBI-Function Halogen Projector HeadlampCrew Cab197.4" Wheelbase
or:
RightBI-Function Halogen Projector HeadlampRegular Cab Chassis Wheelbase 1
or:
LeftBI-Function Halogen Projector HeadlampCrew Cab197.4" Wheelbase
or:
LeftBI-Function Halogen Projector HeadlampRegular Cab Chassis Wheelbase 4
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MOPAR Fits: 6.4L V8 68604860AA
🇺🇸 US 🇨🇦 CA
Fits RightHalogen Quad Headlamps
Fitment notes — MOPAR 68604860AA
Fits:
RightHalogen Quad HeadlampsRegular Cab Chassis Wheelbase 4
or:
RightHalogen Quad HeadlampsRegular Cab Chassis Wheelbase 3
or:
LeftHalogen Quad HeadlampsRegular Cab Chassis Wheelbase 3
or:
LeftHalogen Quad HeadlampsRegular Cab Chassis Wheelbase 4
or:
RightHalogen Quad HeadlampsRegular Cab Chassis Wheelbase 2
or:
RightHalogen Quad HeadlampsRegular Cab Chassis Wheelbase 1
or:
LeftHalogen Quad HeadlampsRegular Cab Chassis Wheelbase 1
or:
LeftHalogen Quad HeadlampsRegular Cab Chassis Wheelbase 2
or:
RightHalogen Quad HeadlampsCrew Cab Wheelbase 4
or:
LeftHalogen Quad HeadlampsCrew Cab Wheelbase 4
or:
RightHalogen Quad HeadlampsCrew Cab197.4" Wheelbase
or:
LeftHalogen Quad HeadlampsCrew Cab197.4" Wheelbase
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WAGNER Fits: 6.4L V8 9005L
🇺🇸 US 🇨🇦 CA
Long Life
Fitment notes — WAGNER 9005L
Long Life
High BeamHalogen
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This table covers the bulbs that light the headlamps. Typical signs include a dark lamp, a flicker over bumps, or a bulb that keeps failing on one side. Avoid touching a halogen capsule. Repeated failure in one socket is usually the socket or ground, not the bulb.

Headlamp Socket

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular Fits: 6.4L V8 HP3835
🇺🇸 US 🇨🇦 CA
HandypackConnector Shape: Oval
Fitment notes — STANDARD MOTOR PRODUCTS HP3835
HandypackConnector Shape: OvalWiring Harness Length (mm): 311.15
without Projector HeadlightsLow Beam
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STANDARD MOTOR PRODUCTS Popular Fits: 6.4L V8 S553
🇺🇸 US 🇨🇦 CA
Connector Shape: OvalContact Terminal Material: Metal
Fitment notes — STANDARD MOTOR PRODUCTS S553
Connector Shape: OvalContact Terminal Material: MetalNumber of Splice Connectors Included: 0Wiring Harness Length (In): 12.25Wiring Harness Length (mm): 311.15
without Projector HeadlightsLow Beam
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WELLS Popular Fits: 6.4L V8 1P1032
🇺🇸 US 🇨🇦 CA
Fits without Projector HeadlightsLow Beamor Low Beam
Fitment notes — WELLS 1P1032
Fits:
without Projector HeadlightsLow Beamor Low Beamwithout Projector Headlights
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ACDELCO Fits: 6.4L V8 LS255
🇺🇸 US 🇨🇦 CA
Gold
Fitment notes — ACDELCO LS255
Gold
Fits:
High Beamor with Projector HeadlightsLow Beam
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ACDELCO Fits: 6.4L V8 PT2298
🇺🇸 US 🇨🇦 CA
GoldHeight (In): 1.5 in
Fitment notes — ACDELCO PT2298
GoldHeight (In): 1.5 inShape: Rectangle
without Projector HeadlightsLow Beam
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ROSTRA Fits: 6.4L V8 610004
🇺🇸 US 🇨🇦 CA
Low Beam
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ROSTRA Fits: 6.4L V8 610023
🇺🇸 US 🇨🇦 CA
View on
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STANDARD MOTOR PRODUCTS Fits: 6.4L V8 HP3970
🇺🇸 US 🇨🇦 CA
Handypack
Fitment notes — STANDARD MOTOR PRODUCTS HP3970
Handypack
Fits:
High Beamor with Projector HeadlightsLow Beam
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STANDARD MOTOR PRODUCTS Fits: 6.4L V8 S524
🇺🇸 US 🇨🇦 CA
Weather Resistant: YES
Fitment notes — STANDARD MOTOR PRODUCTS S524
Weather Resistant: YES
Fits:
High Beamor with Projector HeadlightsLow Beam
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WALKER PRODUCTS Fits: 6.4L V8 2701125
🇺🇸 US 🇨🇦 CA
Fits High Beamor with Projector HeadlightsLow Beam
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WELLS Fits: 6.4L V8 6S1047
🇺🇸 US 🇨🇦 CA
Gender: MaleWire Gauge Measurement: 18
Fitment notes — WELLS 6S1047
Gender: MaleWire Gauge Measurement: 18
Fits:
High Beamor with Projector HeadlightsLow Beamor Low Beamwith Projector Headlights
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This table covers the sockets that hold a headlamp bulb in the housing. Typical signs include a flicker over bumps, melted plastic, or a bulb that will not stay seated. Dielectric grease on the contacts slows corrosion. Do not force a bulb into a heat-damaged socket.

LED Bulb Adapter

Brand Part Number Markets Notes Buy
WAGNER Fits: 6.4L V8 CB900590069012
🇺🇸 US 🇨🇦 CA
LEDFor 9005 / 9006 / 9012 Bulb
Fitment notes — WAGNER CB900590069012
LEDFor 9005 / 9006 / 9012 Bulb
with Vertical Fog Lightswith LED Bulb
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WAGNER Fits: 6.4L V8 CBH8H11H16
🇺🇸 US 🇨🇦 CA
For H8 / H11 / H16 Bulb
Fitment notes — WAGNER CBH8H11H16
For H8 / H11 / H16 Bulb
without Projector HeadlightsHalogenwith LED Bulb
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This table covers the LED Bulb adapters.

License Plate Lamp Bulb

Brand Part Number Markets Notes Buy
PEAK Fits: 6.4L V8 194
🇺🇸 US 🇨🇦 CA
License Plate LightBulb
Fitment notes — PEAK 194
License Plate LightBulbProfessional Box
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This table covers the bulbs that light the license plate. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.

Map / Reading Light Bulb

Extended Life

Brand Part Number Markets Notes Buy
PHILIPS Fits: 6.4L V8 578LL
🇺🇸 US 🇨🇦 CA
Longer Life
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WAGNER Fits: 6.4L V8 578LL
🇺🇸 US 🇨🇦 CA
Long LifeDouble End Caps Base
Fitment notes — WAGNER 578LL
Long LifeDouble End Caps Base9.980 Watt
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Standard Replacement

Brand Part Number Markets Notes Buy
WAGNER Fits: 6.4L V8 578
🇺🇸 US 🇨🇦 CA
Double End Caps Base9.980 Watt
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This table covers the bulbs in the map / reading lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.

Parking Lamp Bulb

Extended Life

Brand Part Number Markets Notes Buy
HELLA Fits: 6.4L V8 4157NALL
🇺🇸 US 🇨🇦 CA
IncandescentLong Life
Fitment notes — HELLA 4157NALL
IncandescentLong Life27/7WSocket Type Bulb: W2.5x16qLong Life
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WAGNER Fits: 6.4L V8 3157NALL
🇺🇸 US 🇨🇦 CA
Long LifeNatural Amber
Fitment notes — WAGNER 3157NALL
Long LifeNatural AmberDouble Contact Wedge Base26.880 WattSecondary Wattage: 8.260 Watt
without projector-type headlamps
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LED (instant-on, long life, energy-saving)

Brand Part Number Markets Notes Buy
PILOT AUTOMOTIVE Fits: 6.4L V8 IL3157R15WK
🇺🇸 US 🇨🇦 CA
Fits Parking Lightwithout PROJECTOR-TYPE HEADLAMPS
Fitment notes — PILOT AUTOMOTIVE IL3157R15WK
Fits:
Parking Lightwithout PROJECTOR-TYPE HEADLAMPSEXTERIOR BULBS
or:
Parking LightULTINON LEDREDEXTERIOR BULBS
or:
Parking LightULTINON LEDREDwithout PROJECTOR-TYPE HEADLAMPSEXTERIOR BULBS
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Standard Replacement

Brand Part Number Markets Notes Buy
WAGNER Popular Fits: 6.4L V8 3157NA
🇺🇸 US 🇨🇦 CA
Natural AmberDouble Contact Wedge Base
Fitment notes — WAGNER 3157NA
Natural AmberDouble Contact Wedge Base26.880 WattSecondary Wattage: 8.260 Watt
without projector-type headlamps
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HELLA Fits: 6.4L V8 3157NA
🇺🇸 US 🇨🇦 CA
IncandescentNatural Amber
Fitment notes — HELLA 3157NA
IncandescentNatural Amber27/7WAverage Rated Life: 1200.0 HRBrightness: 24.0 CPSocket Type Bulb: W2.5x16q
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This table covers the bulbs in the parking lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.

Roof Marker & Identification Light Bulb

Extended Life

Brand Part Number Markets Notes Buy
HELLA Fits: 6.4L V8 194LL
🇺🇸 US 🇨🇦 CA
IncandescentLong Life
Fitment notes — HELLA 194LL
IncandescentLong LifeSocket Type Bulb: W2.1x9.5dLong Life
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PHILIPS Fits: 6.4L V8 194NALL
🇺🇸 US 🇨🇦 CA
Longer LifeNatural Amber
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WAGNER Fits: 6.4L V8 194NALL
🇺🇸 US 🇨🇦 CA
Long LifeNatural Amber
Fitment notes — WAGNER 194NALL
Long LifeNatural AmberWedge Base3.780 Watt
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LED (instant-on, long life, energy-saving)

Brand Part Number Markets Notes Buy
WAGNER Fits: 6.4L V8 194NALED
🇺🇸 US 🇨🇦 CA
LEDNatural Amber
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Standard Replacement

Brand Part Number Markets Notes Buy
HELLA Popular Fits: 6.4L V8 194
🇺🇸 US 🇨🇦 CA
Brightness: 2.0 CPIncandescent
Fitment notes — HELLA 194
Brightness: 2.0 CPIncandescentSocket Type Bulb: W2.1x9.5d
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WAGNER Popular Fits: 6.4L V8 194NA
🇺🇸 US 🇨🇦 CA
Natural AmberWedge Base
Fitment notes — WAGNER 194NA
Natural AmberWedge Base3.780 Watt
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This table covers the replacement bulbs for the Roof Marker & Identification Light. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.

Side Marker Light Bulb

Extended Life

Brand Part Number Markets Notes Buy
HELLA Fits: 6.4L V8 3157LL
🇺🇸 US 🇨🇦 CA
Incandescent27/8W
Fitment notes — HELLA 3157LL
Incandescent27/8WSocket Type Bulb: W2.5x16qLong LifeFront
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WAGNER Fits: 6.4L V8 3157NALL
🇺🇸 US 🇨🇦 CA
Long LifeNatural Amber
Fitment notes — WAGNER 3157NALL
Long LifeNatural AmberDouble Contact Wedge Base26.880 WattSecondary Wattage: 8.260 Watt
Frontwithout projector-type headlamps
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Standard Replacement

Brand Part Number Markets Notes Buy
HELLA Popular Fits: 6.4L V8 3157
🇺🇸 US 🇨🇦 CA
Incandescent27/7W
Fitment notes — HELLA 3157
Incandescent27/7WSocket Type Bulb: W2.5x16q or Socket Type Bulb: WX2.5x16q
FrontP27/7W
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WAGNER Fits: 6.4L V8 3157NA
🇺🇸 US 🇨🇦 CA
Natural AmberDouble Contact Wedge Base
Fitment notes — WAGNER 3157NA
Natural AmberDouble Contact Wedge Base26.880 WattSecondary Wattage: 8.260 Watt
Frontwithout projector-type headlamps
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Brand Part Number Markets Notes Buy
PEAK Fits: 6.4L V8 3157NA
🇺🇸 US 🇨🇦 CA
Frontwithout Projector-Type Headlamps
Fitment notes — PEAK 3157NA
Frontwithout Projector-Type HeadlampsBulbProfessional Box
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This table covers the bulbs in the side-marker lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.

Tail Lamp Bulb

Brand Part Number Markets Notes Buy
WAGNER Fits: 6.4L V8 3157RLED
🇺🇸 US 🇨🇦 CA
RedLED
Fitment notes — WAGNER 3157RLED
RedLED
without projector-type headlamps
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This table covers the bulbs in the tail lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.

Tail Lamp Socket / Connector Plate

Brand Part Number Markets Notes Buy
WELLS Fits: 6.4L V8 1P3339
🇺🇸 US 🇨🇦 CA
with Bulb # 3157
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This table covers the Tail Lamp Socket / Connector plates. Typical signs include warpage, cracks, or a plate that no longer locates the assembly. Confirm which plate the notes describe — backing plates, clutch plates and strike plates are different parts.

Trunk / Cargo Area Light Bulb

Extended Life

Brand Part Number Markets Notes Buy
HELLA Fits: 6.4L V8 921LL
🇺🇸 US 🇨🇦 CA
IncandescentLong Life
Fitment notes — HELLA 921LL
IncandescentLong LifeSocket Type Bulb: W2.1x9.5dLong Life
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WAGNER Fits: 6.4L V8 921LL
🇺🇸 US 🇨🇦 CA
Long LifeWedge Base
Fitment notes — WAGNER 921LL
Long LifeWedge Base17.920 WattBulb Type: T-5 Bulb 5/8 (16mm) Diameter
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LED (instant-on, long life, energy-saving)

Brand Part Number Markets Notes Buy
WAGNER Fits: 6.4L V8 921WLED
🇺🇸 US 🇨🇦 CA
LEDWhite
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Standard Replacement

Brand Part Number Markets Notes Buy
HELLA Popular Fits: 6.4L V8 921
🇺🇸 US 🇨🇦 CA
IncandescentSocket Type Bulb: W2.1x9.5d
Fitment notes — HELLA 921
IncandescentSocket Type Bulb: W2.1x9.5d
W16W
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WAGNER Fits: 6.4L V8 921
🇺🇸 US 🇨🇦 CA
Bulb Type: T-5 Bulb 5/8 (16mm) DiameterVoltage: 12.800 Volts (Direct Current)
Fitment notes — WAGNER 921
Bulb Type: T-5 Bulb 5/8 (16mm) DiameterVoltage: 12.800 Volts (Direct Current)Wedge Base17.920 Watt
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This table covers the bulbs in the trunk or cargo-area lamp. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.

Turn Signal Lamp Bulb

Extended Life

Brand Part Number Markets Notes Buy
HELLA Fits: 6.4L V8 3157LL
🇺🇸 US 🇨🇦 CA
Incandescent27/8W
Fitment notes — HELLA 3157LL
Incandescent27/8WSocket Type Bulb: W2.5x16qLong LifeFront
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WAGNER Fits: 6.4L V8 3157NALL
🇺🇸 US 🇨🇦 CA
Long LifeNatural Amber
Fitment notes — WAGNER 3157NALL
Long LifeNatural AmberDouble Contact Wedge Base26.880 WattSecondary Wattage: 8.260 Watt
Frontwithout projector-type headlamps
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LED (instant-on, long life, energy-saving)

Brand Part Number Markets Notes Buy
PILOT AUTOMOTIVE Fits: 6.4L V8 IL3157R15WK
🇺🇸 US 🇨🇦 CA
FrontULTINON LED
Fitment notes — PILOT AUTOMOTIVE IL3157R15WK
FrontULTINON LEDREDwithout PROJECTOR-TYPE HEADLAMPSEXTERIOR BULBS
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WAGNER Fits: 6.4L V8 3157NALED
🇺🇸 US 🇨🇦 CA
LEDNatural Amber
Fitment notes — WAGNER 3157NALED
LEDNatural Amber
Frontwithout projector-type headlamps
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Standard Replacement

Brand Part Number Markets Notes Buy
HELLA Popular Fits: 6.4L V8 3157
🇺🇸 US 🇨🇦 CA
Incandescent27/7W
Fitment notes — HELLA 3157
Incandescent27/7WSocket Type Bulb: W2.5x16q or Socket Type Bulb: WX2.5x16q
FrontP27/7W
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WAGNER Popular Fits: 6.4L V8 3157NA
🇺🇸 US 🇨🇦 CA
Natural AmberDouble Contact Wedge Base
Fitment notes — WAGNER 3157NA
Natural AmberDouble Contact Wedge Base26.880 WattSecondary Wattage: 8.260 Watt
Frontwithout projector-type headlamps
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This table covers the bulbs in the turn-signal lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.

Buying Electrical Bulb & Socket Parts for a 2018 Ram 4500

On this vehicle, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination.

  • Match the engine first. Every electrical bulb & socket 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 bulbs in pairs so both sides age together, and put a smear of dielectric grease on the new socket contacts.
  • Cross-reference the manufacturer part number against your old part or a service-manual listing.

Start with the largest groups on this page: Headlamp Bulb and Fog / Driving Lamp Bulb .

Frequently Asked Questions

How many electrical bulb & socket parts fit the 2018 Ram 4500?

Our catalog currently lists 87 electrical bulb & socket parts for the 2018 Ram 4500 across 17 subcategories and 12 brands, covering both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. Each part is matched to the engine(s) it fits.

Do electrical bulb & socket parts differ between 2018 Ram 4500 engines?

Yes. Every electrical bulb & socket 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 electrical bulb & socket problems on a 2018 Ram 4500?

Common symptoms include a lamp that flickers over bumps, melted or discolored socket plastic, or bulbs that keep failing early on one side. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.

What should I replace at the same time?

Where labor overlaps, replace bulbs in pairs so both sides age together, and put a smear of dielectric grease on the new socket contacts.

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 4500 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 4500?

First match the engine — each row shows which engine(s) the part fits. Then repeated bulb failure in one position usually means a socket or ground problem, not bad bulbs — replace the socket rather than chase it. The notes column carries position and trim qualifiers where they apply.

Other Parts for the 2018 Ram 4500

Electrical Bulb & Socket Parts for Other Ram 4500 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.