2021 Ram 3500 Electrical Bulb & Socket Parts

Engine:

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

90 Electrical bulb & socket parts are listed for the 2021 Ram 3500, in 18 part types, covering both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. Each one has a brand, a manufacturer part number and notes that say where it fits.

On the 2021 Ram 3500, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination. 35 parts of the 90 listed are Fog / Driving Lamp Bulb (15 parts), Tail Lamp Bulb (11 parts) and Headlamp Bulb (9 parts). The other 15 part types cover the remaining 55 parts.

Back Up / Reverse Lamp Bulb

Extended Life

Brand Part Number Markets Notes Buy
PHILIPS Popular Fits: all 2021 3500 engines 1156LL
🇺🇸 US 🇨🇦 CA
Longer Life
Fitment notes — PHILIPS 1156LL
Longer Life
Cab & Chassis
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HELLA Fits: all 2021 3500 engines 921LL
🇺🇸 US 🇨🇦 CA
IncandescentLong Life
Fitment notes — HELLA 921LL
IncandescentLong LifeSocket Type Bulb: W2.1x9.5dLong Life
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WAGNER Fits: all 2021 3500 engines 7440LL
🇺🇸 US 🇨🇦 CA
Long LifeSingle Contact Wedge Base
Fitment notes — WAGNER 7440LL
Long LifeSingle Contact Wedge Base21.000 Watt
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LED (instant-on, long life, energy-saving)

Brand Part Number Markets Notes Buy
WAGNER Fits: all 2021 3500 engines 7440WLED
🇺🇸 US 🇨🇦 CA
LEDWhite
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Standard Replacement

Brand Part Number Markets Notes Buy
HELLA Popular Fits: all 2021 3500 engines 921
🇺🇸 US 🇨🇦 CA
IncandescentSocket Type Bulb: W2.1x9.5d
Fitment notes — HELLA 921
IncandescentSocket Type Bulb: W2.1x9.5d
W16W
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HELLA Fits: all 2021 3500 engines 7507
🇺🇸 US 🇨🇦 CA
IncandescentSocket Type Bulb: S8.5d or Socket Type Bulb: BAU15S
Fitment notes — HELLA 7507
IncandescentSocket Type Bulb: S8.5d or Socket Type Bulb: BAU15S
PY21W
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HELLA Fits: all 2021 3500 engines 7440
🇺🇸 US 🇨🇦 CA
IncandescentSocket Type Bulb: W3X16D
Fitment notes — HELLA 7440
IncandescentSocket Type Bulb: W3X16D
W21W
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WAGNER Fits: all 2021 3500 engines 7440
🇺🇸 US 🇨🇦 CA
Single Contact Wedge Base21.000 Watt
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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

Extended Life

Brand Part Number Markets Notes Buy
HELLA Fits: all 2021 3500 engines 3157LL
🇺🇸 US 🇨🇦 CA
Incandescent27/8W
Fitment notes — HELLA 3157LL
Incandescent27/8WSocket Type Bulb: W2.5x16qLong Life
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WAGNER Fits: all 2021 3500 engines 7443LL
🇺🇸 US 🇨🇦 CA
Long LifeDouble Contact Wedge Base
Fitment notes — WAGNER 7443LL
Long LifeDouble Contact Wedge Base21.000 Watt
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LED (instant-on, long life, energy-saving)

Brand Part Number Markets Notes Buy
PHILIPS Fits: all 2021 3500 engines 7440RLED
🇺🇸 US 🇨🇦 CA
Ultinon LEDRed
Fitment notes — PHILIPS 7440RLED
Ultinon LEDRed
Fits:
4WDCrew Cab Pickup or Extended Crew Cab Pickup or Standard Cab Pickupor RWDCrew Cab Pickup or Standard Cab Pickup
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WAGNER Fits: all 2021 3500 engines 7443LEDW
🇺🇸 US 🇨🇦 CA
LED
Fitment notes — WAGNER 7443LEDW
LED
LED BULB
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Standard Replacement

Brand Part Number Markets Notes Buy
HELLA Popular Fits: all 2021 3500 engines 3157
🇺🇸 US 🇨🇦 CA
Incandescent27/7W
Fitment notes — HELLA 3157
Incandescent27/7WSocket Type Bulb: W2.5x16q or Socket Type Bulb: WX2.5x16q
P27/7W
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WAGNER Popular Fits: all 2021 3500 engines 7443
🇺🇸 US 🇨🇦 CA
Double Contact Wedge Base21.000 Watt
Fitment notes — WAGNER 7443
Double Contact Wedge Base21.000 WattSecondary Wattage: 5.000 Watt
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HELLA Fits: all 2021 3500 engines 7528
🇺🇸 US 🇨🇦 CA
Incandescent21/5W
Fitment notes — HELLA 7528
Incandescent21/5WSocket Type Bulb: BAY15D
P21/5W
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This table covers the bulbs in the stop 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: all 2021 3500 engines 921LL
🇺🇸 US 🇨🇦 CA
IncandescentLong Life
Fitment notes — HELLA 921LL
IncandescentLong LifeSocket Type Bulb: W2.1x9.5dLong Life
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HELLA Fits: all 2021 3500 engines DE3175LL
🇺🇸 US 🇨🇦 CA
IncandescentLong Life
Fitment notes — HELLA DE3175LL
IncandescentLong LifeSocket Type Bulb: SV8.5-8Long Life
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Standard Replacement

Brand Part Number Markets Notes Buy
HELLA Popular Fits: all 2021 3500 engines 2825
🇺🇸 US 🇨🇦 CA
IncandescentSocket Type Bulb: W2.1x9.5d
Fitment notes — HELLA 2825
IncandescentSocket Type Bulb: W2.1x9.5d
W5W
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HELLA Fits: all 2021 3500 engines 921
🇺🇸 US 🇨🇦 CA
IncandescentSocket Type Bulb: W2.1x9.5d
Fitment notes — HELLA 921
IncandescentSocket Type Bulb: W2.1x9.5d
W16W
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HELLA Fits: all 2021 3500 engines 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.

Brake Light Socket

Brand Part Number Markets Notes Buy
DORMAN Fits: all 2021 3500 engines 645118
🇺🇸 US 🇨🇦 CA
Terminal Gender: Female
Fitment notes — DORMAN 645118
Terminal Gender: Female
Fits:
LeftCompare with Original Socket
or:
RightCompare with Original Socket
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This table covers the sockets that hold a Brake Light bulb. 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.

Dome Light Bulb

Extended Life

Brand Part Number Markets Notes Buy
PHILIPS Fits: all 2021 3500 engines 578LL
🇺🇸 US 🇨🇦 CA
Longer Life
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Standard Replacement

Brand Part Number Markets Notes Buy
HELLA Fits: all 2021 3500 engines 912
🇺🇸 US 🇨🇦 CA
IncandescentSocket Type Bulb: W2.1x9.5d
Fitment notes — HELLA 912
IncandescentSocket Type Bulb: W2.1x9.5d
Cab Pickup
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This table covers the bulbs in the dome 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.

Fog / Driving Lamp Bulb

Extended Life

Brand Part Number Markets Notes Buy
SYLVANIA Popular Fits: all 2021 3500 engines H11LL
🇺🇸 US 🇨🇦 CA
Long Life
Fitment notes — SYLVANIA H11LL
Long Life
Frontwith Factory Halogen Headlights
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WAGNER Fits: all 2021 3500 engines 1255H11LL
🇺🇸 US 🇨🇦 CA
Long Life
Fitment notes — WAGNER 1255H11LL
Long Life
FrontHalogen
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Extra Bright (improved visibility, but shorter life)

Brand Part Number Markets Notes Buy
SYLVANIA Fits: all 2021 3500 engines H11XV
🇺🇸 US 🇨🇦 CA
Xtra VisionColor Temperature: 3200 KV
Fitment notes — SYLVANIA H11XV
Xtra VisionColor Temperature: 3200 KVBase Type: PGJ19-2 or PGJ19Wattage: 55.00 W
Frontwith Factory Halogen Headlights
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SYLVANIA Fits: all 2021 3500 engines H11SU
🇺🇸 US 🇨🇦 CA
Silver Star UltraColor Temperature: 4100 KV
Fitment notes — SYLVANIA H11SU
Silver Star UltraColor Temperature: 4100 KVBase Type: PGJ19-2 or PGJ19Wattage: 55.00 W
Frontwith Factory Halogen Headlights
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SYLVANIA Fits: all 2021 3500 engines H11ST
🇺🇸 US 🇨🇦 CA
Color Temperature: 4000 KVSilver Star
Fitment notes — SYLVANIA H11ST
Color Temperature: 4000 KVSilver StarBase Type: PGJ19 or PGJ19-2Wattage: 55.00 W
Frontwith Factory Halogen Headlights
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SYLVANIA Fits: all 2021 3500 engines H11SZGP
🇺🇸 US 🇨🇦 CA
Silver Star zXe GOLDBase Type: PGJ19
Fitment notes — SYLVANIA H11SZGP
Silver Star zXe GOLDBase Type: PGJ19Wattage: 55.00 WExtra White Light
Frontwith Factory Halogen Headlights
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WAGNER Fits: all 2021 3500 engines H11BLX
🇺🇸 US 🇨🇦 CA
BritelitePGJ19-2 Base
Fitment notes — WAGNER H11BLX
BritelitePGJ19-2 Base55.000 Watt80% More Light
FrontHalogen
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WAGNER Fits: all 2021 3500 engines H11TVX
🇺🇸 US 🇨🇦 CA
Truview Plus1.733 Base
Fitment notes — WAGNER H11TVX
Truview Plus1.733 Base4.580 WattHID Look
FrontHalogen
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LED (instant-on, long life, energy-saving)

Brand Part Number Markets Notes Buy
SYLVANIA Fits: all 2021 3500 engines H11LEDSP
🇺🇸 US 🇨🇦 CA
LEDBase Type: PGJ19-2
Fitment notes — SYLVANIA H11LEDSP
LEDBase Type: PGJ19-2Wattage: 13 W
Frontwith Factory Halogen Headlights
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SYLVANIA Fits: all 2021 3500 engines H11LEDHP
🇺🇸 US 🇨🇦 CA
LED ULTRABase Type: PGJ19-2
Fitment notes — SYLVANIA H11LEDHP
LED ULTRABase Type: PGJ19-2Wattage: 20 W
Frontwith Factory Halogen Headlights
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WAGNER Fits: all 2021 3500 engines H11LED
🇺🇸 US 🇨🇦 CA
LED
Fitment notes — WAGNER H11LED
LED
FrontFor Use with Fog Light
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Standard Replacement

Brand Part Number Markets Notes Buy
HELLA Popular Fits: all 2021 3500 engines 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: all 2021 3500 engines 1255H11
🇺🇸 US 🇨🇦 CA
Bulb Color: Clear
Fitment notes — WAGNER 1255H11
Bulb Color: Clear
FrontHalogen
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HELLA Fits: all 2021 3500 engines H16
🇺🇸 US 🇨🇦 CA
HalogenSocket Type Bulb: PGJ19-3
Fitment notes — HELLA H16
HalogenSocket Type Bulb: PGJ19-3
FrontH16
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SYLVANIA Fits: all 2021 3500 engines H11
🇺🇸 US 🇨🇦 CA
Base Type: PGJ19-2
Fitment notes — SYLVANIA H11
Base Type: PGJ19-2
or:
Right AngleWattage: 55.00 W
Frontwith Factory Halogen Headlights
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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.

Headlamp Bulb

Extended Life

Brand Part Number Markets Notes Buy
WAGNER Fits: all 2021 3500 engines 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: all 2021 3500 engines 9005TVX
🇺🇸 US 🇨🇦 CA
HID Look
Fitment notes — WAGNER 9005TVX
HID Look
Fits:
Low BeamHalogenor High BeamHalogen
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WAGNER Fits: all 2021 3500 engines 9005BLX
🇺🇸 US 🇨🇦 CA
Long Life80% More Light
Fitment notes — WAGNER 9005BLX
Long Life80% More Light
Fits:
Low BeamHalogenor High BeamHalogen
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WAGNER Fits: all 2021 3500 engines 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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Amazon
WAGNER Fits: all 2021 3500 engines H11TVX
🇺🇸 US 🇨🇦 CA
Truview Plus1.733 Base
Fitment notes — WAGNER H11TVX
Truview Plus1.733 Base4.580 WattHID Look
Low Beamwithout Projector HeadlightsHalogen
View on
Amazon

Standard Replacement

Brand Part Number Markets Notes Buy
WAGNER Popular Fits: all 2021 3500 engines 9005
🇺🇸 US 🇨🇦 CA
Voltage: 12.800 Volts (Direct Current)
Fitment notes — WAGNER 9005
Voltage: 12.800 Volts (Direct Current)
Fits:
Low BeamHalogenor High BeamHalogen
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WAGNER Popular Fits: all 2021 3500 engines 1255H11
🇺🇸 US 🇨🇦 CA
Bulb Color: Clear
Fitment notes — WAGNER 1255H11
Bulb Color: Clear
Low Beamwithout Projector HeadlightsHalogen
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HELLA Fits: all 2021 3500 engines 9003
🇺🇸 US 🇨🇦 CA
HalogenSocket Type Bulb: P43T
Fitment notes — HELLA 9003
HalogenSocket Type Bulb: P43T
High Beam and Low Beam60/55W
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WAGNER Fits: all 2021 3500 engines 9005L
🇺🇸 US 🇨🇦 CA
Long Life
Fitment notes — WAGNER 9005L
Long Life
Fits:
Low BeamHalogenor 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: all 2021 3500 engines HP3835
🇺🇸 US 🇨🇦 CA
HandypackConnector Shape: Oval
Fitment notes — STANDARD MOTOR PRODUCTS HP3835
HandypackConnector Shape: OvalWiring Harness Length (mm): 311.15
Low Beam
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STANDARD MOTOR PRODUCTS Popular Fits: all 2021 3500 engines 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
Low Beam
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ACDELCO Fits: all 2021 3500 engines LS255
🇺🇸 US 🇨🇦 CA
Gold
Fitment notes — ACDELCO LS255
Gold
High Beam
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ACDELCO Fits: all 2021 3500 engines PT2298
🇺🇸 US 🇨🇦 CA
GoldHeight (In): 1.5 in
Fitment notes — ACDELCO PT2298
GoldHeight (In): 1.5 inShape: Rectangle
Low Beam
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STANDARD MOTOR PRODUCTS Fits: all 2021 3500 engines HP3970
🇺🇸 US 🇨🇦 CA
Handypack
Fitment notes — STANDARD MOTOR PRODUCTS HP3970
Handypack
High Beam
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STANDARD MOTOR PRODUCTS Fits: all 2021 3500 engines S524
🇺🇸 US 🇨🇦 CA
Weather Resistant: YES
Fitment notes — STANDARD MOTOR PRODUCTS S524
Weather Resistant: YES
High Beam
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WALKER PRODUCTS Fits: all 2021 3500 engines 2701125
🇺🇸 US 🇨🇦 CA
High Beam
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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: all 2021 3500 engines CB900590069012
🇺🇸 US 🇨🇦 CA
LEDFor 9005 / 9006 / 9012 Bulb
Fitment notes — WAGNER CB900590069012
LEDFor 9005 / 9006 / 9012 Bulb
with LED Bulb
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WAGNER Fits: all 2021 3500 engines 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

LED (instant-on, long life, energy-saving)

Brand Part Number Markets Notes Buy
PHILIPS Fits: all 2021 3500 engines 1157WLED
🇺🇸 US 🇨🇦 CA
Ultinon LEDWhite
Fitment notes — PHILIPS 1157WLED
Ultinon LEDWhite
Cab & Chassis
View on
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Standard Replacement

Brand Part Number Markets Notes Buy
HELLA Fits: all 2021 3500 engines 2825
🇺🇸 US 🇨🇦 CA
IncandescentSocket Type Bulb: W2.1x9.5d
Fitment notes — HELLA 2825
IncandescentSocket Type Bulb: W2.1x9.5d
W5W
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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

Brand Part Number Markets Notes Buy
HELLA Fits: all 2021 3500 engines 912
🇺🇸 US 🇨🇦 CA
IncandescentSocket Type Bulb: W2.1x9.5d
Fitment notes — HELLA 912
IncandescentSocket Type Bulb: W2.1x9.5d
Cab Pickup
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PHILIPS Fits: all 2021 3500 engines 2122
🇺🇸 US 🇨🇦 CA
View on
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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
PHILIPS Fits: all 2021 3500 engines 7444NALL
🇺🇸 US 🇨🇦 CA
Longer LifeNatural Amber
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WAGNER Fits: all 2021 3500 engines 7444NALL
🇺🇸 US 🇨🇦 CA
Long LifeNatural Amber
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Standard Replacement

Brand Part Number Markets Notes Buy
WAGNER Fits: all 2021 3500 engines 7444NA
🇺🇸 US 🇨🇦 CA
Natural Amber
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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

Brand Part Number Markets Notes Buy
PHILIPS Fits: all 2021 3500 engines 194NALL
🇺🇸 US 🇨🇦 CA
Longer LifeNatural Amber
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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: all 2021 3500 engines 3157LL
🇺🇸 US 🇨🇦 CA
Incandescent27/8W
Fitment notes — HELLA 3157LL
Incandescent27/8WSocket Type Bulb: W2.5x16qLong LifeRear
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Standard Replacement

Brand Part Number Markets Notes Buy
HELLA Fits: all 2021 3500 engines 2825
🇺🇸 US 🇨🇦 CA
IncandescentSocket Type Bulb: W2.1x9.5d
Fitment notes — HELLA 2825
IncandescentSocket Type Bulb: W2.1x9.5d
Fits:
FrontW5W
or:
RearW5W
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HELLA Fits: all 2021 3500 engines 3157
🇺🇸 US 🇨🇦 CA
Incandescent27/7W
Fitment notes — HELLA 3157
Incandescent27/7WSocket Type Bulb: W2.5x16q or Socket Type Bulb: WX2.5x16q
RearP27/7W
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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

Extended Life

Brand Part Number Markets Notes Buy
HELLA Fits: all 2021 3500 engines 3157LL
🇺🇸 US 🇨🇦 CA
Incandescent27/8W
Fitment notes — HELLA 3157LL
Incandescent27/8WSocket Type Bulb: W2.5x16qLong Life
View on
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WAGNER Fits: all 2021 3500 engines 7443LL
🇺🇸 US 🇨🇦 CA
Long LifeDouble Contact Wedge Base
Fitment notes — WAGNER 7443LL
Long LifeDouble Contact Wedge Base21.000 Watt
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LED (instant-on, long life, energy-saving)

Brand Part Number Markets Notes Buy
PHILIPS Fits: all 2021 3500 engines 7440RLED
🇺🇸 US 🇨🇦 CA
Ultinon LEDRed
Fitment notes — PHILIPS 7440RLED
Ultinon LEDRed
Upper
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PHILIPS Fits: all 2021 3500 engines 3157RLED
🇺🇸 US 🇨🇦 CA
Ultinon LEDRed
Fitment notes — PHILIPS 3157RLED
Ultinon LEDRed
Crew Cab Pickup or Extended Crew Cab Pickup or Standard Cab Pickup
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WAGNER Fits: all 2021 3500 engines 7443LEDW
🇺🇸 US 🇨🇦 CA
LED
Fitment notes — WAGNER 7443LEDW
LED
LED BULB
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Standard Replacement

Brand Part Number Markets Notes Buy
HELLA Popular Fits: all 2021 3500 engines 2825
🇺🇸 US 🇨🇦 CA
IncandescentSocket Type Bulb: W2.1x9.5d
Fitment notes — HELLA 2825
IncandescentSocket Type Bulb: W2.1x9.5d
W5W
View on
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HELLA Popular Fits: all 2021 3500 engines 3157
🇺🇸 US 🇨🇦 CA
Incandescent27/7W
Fitment notes — HELLA 3157
Incandescent27/7WSocket Type Bulb: W2.5x16q or Socket Type Bulb: WX2.5x16q
P27/7W
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WAGNER Popular Fits: all 2021 3500 engines 7443
🇺🇸 US 🇨🇦 CA
Double Contact Wedge Base21.000 Watt
Fitment notes — WAGNER 7443
Double Contact Wedge Base21.000 WattSecondary Wattage: 5.000 Watt
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HELLA Fits: all 2021 3500 engines 7528
🇺🇸 US 🇨🇦 CA
Incandescent21/5W
Fitment notes — HELLA 7528
Incandescent21/5WSocket Type Bulb: BAY15D
P21/5W
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HELLA Fits: all 2021 3500 engines 7440
🇺🇸 US 🇨🇦 CA
IncandescentSocket Type Bulb: W3X16D
Fitment notes — HELLA 7440
IncandescentSocket Type Bulb: W3X16D
W21W
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PHILIPS Fits: all 2021 3500 engines 12174SV
🇺🇸 US 🇨🇦 CA
Lower
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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
DORMAN Fits: all 2021 3500 engines 645118
🇺🇸 US 🇨🇦 CA
Terminal Gender: Female
Fitment notes — DORMAN 645118
Terminal Gender: Female
Fits:
LeftCompare with Original Socket
or:
RightCompare with Original Socket
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WELLS Fits: all 2021 3500 engines 1P3339
🇺🇸 US 🇨🇦 CA
View on
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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.

Turn Signal Lamp Bulb

Extended Life

Brand Part Number Markets Notes Buy
PHILIPS Popular Fits: all 2021 3500 engines 7444NALL
🇺🇸 US 🇨🇦 CA
Longer LifeNatural Amber
Fitment notes — PHILIPS 7444NALL
Longer LifeNatural AmberFront
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HELLA Fits: all 2021 3500 engines 921LL
🇺🇸 US 🇨🇦 CA
IncandescentLong Life
Fitment notes — HELLA 921LL
IncandescentLong LifeSocket Type Bulb: W2.1x9.5dLong LifeRear
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WAGNER Fits: all 2021 3500 engines 7444NALL
🇺🇸 US 🇨🇦 CA
Long LifeNatural Amber
Fitment notes — WAGNER 7444NALL
Long LifeNatural AmberFront
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Standard Replacement

Brand Part Number Markets Notes Buy
HELLA Popular Fits: all 2021 3500 engines 921
🇺🇸 US 🇨🇦 CA
IncandescentSocket Type Bulb: W2.1x9.5d
Fitment notes — HELLA 921
IncandescentSocket Type Bulb: W2.1x9.5d
RearW16W
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HELLA Fits: all 2021 3500 engines 7507
🇺🇸 US 🇨🇦 CA
IncandescentSocket Type Bulb: S8.5d or Socket Type Bulb: BAU15S
Fitment notes — HELLA 7507
IncandescentSocket Type Bulb: S8.5d or Socket Type Bulb: BAU15S
RearPY21W
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HELLA Fits: all 2021 3500 engines 2357NA
🇺🇸 US 🇨🇦 CA
IncandescentBulb Material Color: Amber
Fitment notes — HELLA 2357NA
IncandescentBulb Material Color: Amber29/8WSocket Type Bulb: BAY15DFront
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HELLA Fits: all 2021 3500 engines 7440NA
🇺🇸 US 🇨🇦 CA
IncandescentNatural Amber
Fitment notes — HELLA 7440NA
IncandescentNatural AmberSocket Type Bulb: W3X16DFront
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WAGNER Fits: all 2021 3500 engines 7444NA
🇺🇸 US 🇨🇦 CA
Natural Amber
Fitment notes — WAGNER 7444NA
Natural Amber
Front
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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.

Turn Signal Lamp Socket

Brand Part Number Markets Notes Buy
DORMAN Fits: all 2021 3500 engines 645118
🇺🇸 US 🇨🇦 CA
Terminal Gender: Female
Fitment notes — DORMAN 645118
Terminal Gender: Female
RearCompare with Original Socket
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WELLS Fits: all 2021 3500 engines 1P3339
🇺🇸 US 🇨🇦 CA
Rear
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This table covers the sockets that hold a Turn Signal Lamp bulb. 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.

Buying Electrical Bulb & Socket Parts for a 2021 Ram 3500

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

  • You do not need to pick an engine: every electrical bulb & socket part on this page fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged.
  • 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: Fog / Driving Lamp Bulb and Tail Lamp Bulb .

Frequently Asked Questions

How many electrical bulb & socket parts fit the 2021 Ram 3500?

Our catalog currently lists 90 electrical bulb & socket parts for the 2021 Ram 3500 across 18 subcategories and 9 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 2021 Ram 3500 engines?

No. On this page every electrical bulb & socket part fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. You do not need to pick an engine to choose the right row — use the notes for position and trim.

What are the signs of electrical bulb & socket problems on a 2021 Ram 3500?

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 2021 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 2021 Ram 3500?

Every part on this page already fits both the 6.4L V8 and the 6.7L L6 DIESEL Turbocharged. 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 2021 Ram 3500

Electrical Bulb & Socket 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.