2018 Ram 2500 Electrical Parts

This table covers the alternators that charge the battery and run the electrical load. Typical signs include dim lights at idle, a battery lamp, or a growl from the charging pulley. Load-test the battery and inspect the belt and grounds — a bad ground mimics a failed alternator. Read more

42 Alternator / Generator parts for the 2018 Ram 2500 come from 11 brands — REMY, TERREPOWER, PURE ENERGY and 8 other brands. The "Popular" part is MOPAR 4801769AB. They are grouped as New and Remanufactured, with Remanufactured the largest group at 24 parts from FVP, PURE ENERGY, REMY and 5 other brands.

This table covers the batteries listed by group size and specification. Typical signs include slow cranking, a battery lamp, or a no-start after the vehicle sat overnight. Confirm group size and terminal layout in the notes. Clean the posts and the ground before condemning the battery. Read more

8 Battery parts are listed for the 2018 Ram 2500, from DEKA, FVP, ACDELCO and 5 other brands. DEKA 9A94R carries the "Popular" badge.

The AGM (Extended Life) section lists 7 options from DEKA, FVP, ACDELCO and 4 other brands — grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. DEKA 9A94R is listed in this group.

The Performance AGM (Extended Life + Increased Power) section lists 1 option from FULLRIVER — grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. FULLRIVER FT85094R is listed in this group.

This group includes DEKA 9A94R, FVP P94RAGM and ACDELCO 94RAGM and the remaining parts above.

This table covers the positive and ground cables that run from the battery. Typical signs include a stretched or frayed cable, or a control that no longer reaches the end of its travel. Route the new cable through the same clips. A kinked cable binds and fails early. Read more

This group shows a single part: MOPAR 5059001AC.

This table covers the Battery Current sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors. Read more

2 Battery Current Sensor parts for the 2018 Ram 2500 come from 2 brands — MOPAR and STANDARD MOTOR PRODUCTS.

Listed part numbers: MOPAR 68318616AC and STANDARD MOTOR PRODUCTS BSC15.

This table covers the Battery Heat shields. Typical signs include a bent shield rubbing a rotor, or rust-through that leaves the backing open. A rubbing shield will eat a new rotor. Straighten or replace it before the wheel goes back on. Read more

This group shows a single part: MOPAR 68494324AA.

This table covers the covers that protect battery terminals. Read more

MOPAR supplies the 3 Battery Terminal Protector parts for the 2018 Ram 2500.

Listed part numbers: MOPAR 68164628AA, MOPAR 68348398AA and MOPAR 68368108AA.

This table covers the trays the battery sits in. Read more

One part is listed for the 2018 Ram 2500 — MOPAR 68095940AF.

This table covers the resettable circuit breakers in this vehicle's electrical system. Read more

MOPAR supplies both parts for the 2018 Ram 2500.

Listed part numbers: MOPAR 68148874AA and MOPAR 4692143AA.

This table covers the Door control modules. Read more

MOPAR supplies the 6 Door Control Module parts for the 2018 Ram 2500. MOPAR 68225103AD carries the "Popular" badge.

This group includes MOPAR 68225103AD, MOPAR 68225101AD and MOPAR 68225102AD and the remaining parts above.

This table covers the replacement fuses for this vehicle's fuse boxes. Typical signs include one circuit dead while its neighbor still works, or a fuse that blows again as soon as you replace it. Match amperage and fuse type. A repeat blow means a short — find it before the next fuse. Read more

MOPAR supplies the 12 Fuse parts for the 2018 Ram 2500. MOPAR 6101488 carries the "Popular" badge.

The 10 Amp section lists 1 option from MOPAR — grouped under the catalog's "10 Amp" designation — the notes column spells out what sets them apart. MOPAR 68100731AB is listed in this group.

In the 15 Amp grade, MOPAR supplies 1 part: grouped under the catalog's "15 Amp" designation — the notes column spells out what sets them apart. A representative part number is MOPAR 68100745AB.

In the 20 Amp grade, MOPAR supplies 3 parts: grouped under the catalog's "20 Amp" designation — the notes column spells out what sets them apart. A representative part number is MOPAR 6101488.

The 25 Amp section lists 1 option from MOPAR — grouped under the catalog's "25 Amp" designation — the notes column spells out what sets them apart. MOPAR 68100747AB is listed in this group.

The 250 Amp section lists 1 option from MOPAR — grouped under the catalog's "250 Amp" designation — the notes column spells out what sets them apart. MOPAR 68241002AA is listed in this group.

The 30 Amp section lists 2 options from MOPAR — grouped under the catalog's "30 Amp" designation — the notes column spells out what sets them apart. MOPAR 68144653AA is listed in this group.

In the 40 Amp grade, MOPAR supplies 2 parts: grouped under the catalog's "40 Amp" designation — the notes column spells out what sets them apart. A representative part number is MOPAR 68144445AA.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

This table covers the fuse blocks that hold this vehicle's fuses. Read more

This group shows a single part: DORMAN 956356.

This table covers the Fuse Box covers. Read more

MOPAR supplies both parts for the 2018 Ram 2500.

Part numbers include MOPAR 68202821AA and MOPAR 68188679AA.

This table covers the horns mounted in the front of the vehicle. Read more

14 Horn parts are listed for the 2018 Ram 2500, from FIAMM and MOPAR. FIAMM 7210223 carries the "Popular" badge.

In the Accessory Replacement grade, FIAMM supplies 7 parts: grouped under the catalog's "Accessory Replacement" designation — the notes column spells out what sets them apart. A representative part number is FIAMM 7210223.

The Standard Replacement section lists 7 options from FIAMM and MOPAR — built to original-equipment specification. FIAMM 7201223 is listed in this group.

This table covers the receivers that pick up the key-fob unlock signal. Read more

6 Keyless Entry Module / Receiver parts for the 2018 Ram 2500 come from MOPAR. The "Popular" part is MOPAR 56046957AA.

Part numbers include MOPAR 56046957AA, MOPAR 56046958AA and MOPAR 68363199AC, among others listed above.

This table covers the key fobs that lock, unlock and start the vehicle. Read more

6 Keyless Entry Remote parts for the 2018 Ram 2500 come from 2 brands — DORMAN and MOPAR. The "Popular" part is MOPAR 56046955AG.

Part numbers include MOPAR 56046955AG, MOPAR 56046953AG and DORMAN 99772ST, among others listed above.

This table covers the Park Assist (PAS) Camera modules. Typical signs include a cluster of unrelated faults, a no-communication code, or a module that will not sleep. Confirm power, ground and programming compatibility in the notes. Modules are rarely plug-and-play across years. Read more

One part is listed for the 2018 Ram 2500 — MOPAR 5137541AA.

This table covers the ultrasonic park-aid sensors in the bumper. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors. Read more

6 Parking Aid Sensor parts for the 2018 Ram 2500 come from 6 brands — BOSCH, STANDARD MOTOR PRODUCTS, AUTOTECNICA and 3 other brands. The "Popular" part is BOSCH 0263043552.

Listed part numbers: BOSCH 0263043552, STANDARD MOTOR PRODUCTS PPS45 and AUTOTECNICA CY1317815, plus the other parts above.

This table covers the brackets that mount the Parking Aid Sensor. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

3 Parking Aid Sensor Bracket parts for the 2018 Ram 2500 come from 2 brands — WESTIN and TECHPRO.

This group includes TECHPRO CH1174102, WESTIN 400015S and WESTIN 450010S.

This table covers the Power inverters. Read more

This group shows a single part: MOPAR 56046934AA.

This table covers the powertrain-control modules that run engine and transmission. Read more

One part is listed for the 2018 Ram 2500 — MOPAR 68331214AA.

This table covers the capacitors that suppress radio noise. Read more

One part is listed for the 2018 Ram 2500 — STANDARD MOTOR PRODUCTS RC33.

This table covers the Rain sensors. Typical signs include a warning lamp, a stored code, or a reading that drops out when the harness is wiggled. Inspect the connector and ground before replacing the sensor — wiring faults are often condemned as bad sensors. Read more

This group shows a single part: MOPAR 68149325AC.

This table covers the Serial Data Gateway modules. Typical signs include a cluster of unrelated faults, a no-communication code, or a module that will not sleep. Confirm power, ground and programming compatibility in the notes. Modules are rarely plug-and-play across years. Read more

This group shows a single part: MOPAR 68454413AA.

This table covers the speed sensors on the transmission, transfer case or ABS ring. Typical signs include a dead speedometer, harsh transmission shifts, or a code for vehicle speed. Inspect the tone wheel and the connector before replacing the sensor. Read more

12 Speed Sensor parts are listed for the 2018 Ram 2500, from STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, AUTOTECNICA and 7 other brands. WALKER PRODUCTS 24091042 carries the "Popular" badge.

In the Economy grade, AUTOTECNICA, BECK/ARNLEY, DORMAN and 4 other brands supply 7 parts: the catalog's value-priced group. A representative part number is AUTOTECNICA CY1320158.

In the Full Service Kit grade, WALKER PRODUCTS supplies 1 part: grouped under the catalog's "Full Service Kit" designation — the notes column spells out what sets them apart. A representative part number is WALKER PRODUCTS 24091042.

The Standard Replacement section: 4 options from DELPHI, MOPAR, STANDARD MOTOR PRODUCTS and 1 other brand. DELPHI SS11424 is listed in this group.

This table covers the starter motors that crank the engine. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor. Read more

23 Starter Motor parts for the 2018 Ram 2500 come from 10 brands — MOPAR, PURE ENERGY, REMY and 7 other brands. The "Popular" part is PURE ENERGY 17948N.

The New section lists 9 options from TYC, MOPAR, WAI GLOBAL and 3 other brands — brand-new units rather than rebuilt ones. PURE ENERGY 17948N is listed in this group.

The Remanufactured section lists 14 options from MOPAR, PURE ENERGY, FVP and 6 other brands — factory-rebuilt units with new wear components. MOPAR R6044736AC is listed in this group.

This table covers the Starter Motor Heat shields. Typical signs include a bent shield rubbing a rotor, or rust-through that leaves the backing open. A rubbing shield will eat a new rotor. Straighten or replace it before the wheel goes back on. Read more

One part is listed for the 2018 Ram 2500 — MOPAR 56044116AE.