2021 Ram Promaster 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

18 Alternator / Generator parts are listed for the 2021 Ram Promaster 2500, from BOSCH, MOPAR, FVP and 7 other brands. SKP SK11793 carries the "Popular" badge.

In the New grade, MOPAR, SKP, TYC and 2 other brands supply 6 parts: brand-new units rather than rebuilt ones. A representative part number is SKP SK11793.

In the Remanufactured grade, BOSCH, FVP, PURE ENERGY and 4 other brands supply 12 parts: factory-rebuilt units with new wear components. A representative part number is DENSO 2101201.

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

16 Battery parts for the 2021 Ram Promaster 2500 come from 10 brands — DEKA, LUCAS, ACDELCO and 7 other brands. The "Popular" part is DEKA 9A49.

In the AGM (Extended Life) grade, DEKA, LUCAS, ACDELCO and 6 other brands supply 15 parts: grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. A representative part number is DEKA 9A49.

In the Performance AGM (Extended Life + Increased Power) grade, FULLRIVER supplies 1 part: grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. A representative part number is FULLRIVER FT89049.

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

MOPAR supplies the 3 Battery Cable parts for the 2021 Ram Promaster 2500.

This group includes MOPAR 4727651AB, MOPAR 52112166AA and MOPAR 52112163AC.

This table covers the Battery covers. Read more

One part is listed for the 2021 Ram Promaster 2500 — MOPAR 6JV49LAHAB.

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

21 Fuse parts for the 2021 Ram Promaster 2500 come from 2 brands — BUSSMANN and MOPAR. The "Popular" part is BUSSMANN ATM20LP.

In the 10 Amp grade, BUSSMANN and MOPAR supply 2 parts: grouped under the catalog's "10 Amp" designation — the notes column spells out what sets them apart. A representative part number is BUSSMANN ATM10LP.

The 15 Amp section lists 1 option from BUSSMANN — grouped under the catalog's "15 Amp" designation — the notes column spells out what sets them apart. BUSSMANN ATM15LP is listed in this group.

The 20 Amp section lists 3 options from BUSSMANN and MOPAR — grouped under the catalog's "20 Amp" designation — the notes column spells out what sets them apart. BUSSMANN ATM20LP is listed in this group.

In the 225 Amp grade, BUSSMANN supplies 1 part: grouped under the catalog's "225 Amp" designation — the notes column spells out what sets them apart. A representative part number is BUSSMANN AMG225.

In the 25 Amp grade, BUSSMANN and MOPAR supply 2 parts: grouped under the catalog's "25 Amp" designation — the notes column spells out what sets them apart. A representative part number is BUSSMANN ATM25LP.

In the 250 Amp grade, MOPAR supplies 1 part: grouped under the catalog's "250 Amp" designation — the notes column spells out what sets them apart. A representative part number is MOPAR 68234719AA.

In the 30 Amp grade, BUSSMANN supplies 2 parts: grouped under the catalog's "30 Amp" designation — the notes column spells out what sets them apart. A representative part number is BUSSMANN ATM30LP.

The 40 Amp section lists 2 options from BUSSMANN and MOPAR — grouped under the catalog's "40 Amp" designation — the notes column spells out what sets them apart. BUSSMANN FMX40LP is listed in this group.

In the 5 Amp grade, BUSSMANN and MOPAR supply 2 parts: grouped under the catalog's "5 Amp" designation — the notes column spells out what sets them apart. A representative part number is BUSSMANN ATM5LP.

The 60 Amp section lists 1 option from BUSSMANN — grouped under the catalog's "60 Amp" designation — the notes column spells out what sets them apart. BUSSMANN FMX60LP is listed in this group.

The 7.5 Amp section lists 1 option from BUSSMANN — grouped under the catalog's "7.5 Amp" designation — the notes column spells out what sets them apart. BUSSMANN ATM712LP is listed in this group.

In the 70 Amp grade, MOPAR supplies 2 parts: grouped under the catalog's "70 Amp" designation — the notes column spells out what sets them apart. A representative part number is MOPAR 68172085AA.

1 further part sits outside the graded sections, with the same engine-level match.

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

MOPAR supplies both parts for the 2021 Ram Promaster 2500.

This group includes MOPAR 68305537AB and MOPAR 68422354AA.

This table covers the Fuse Box covers. Read more

2 Fuse Box Cover parts for the 2021 Ram Promaster 2500 come from MOPAR.

This group includes MOPAR 68100627AA and MOPAR 68100637AA.

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

One part is listed for the 2021 Ram Promaster 2500 — DORMAN 99419ST.

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

This group shows a single part: MOPAR 4727598AB.

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

5 Parking Aid Sensor parts are listed for the 2021 Ram Promaster 2500, from BOSCH, DORMAN, MOPAR and 2 other brands. BOSCH 0263023433 carries the "Popular" badge.

Part numbers include BOSCH 0263023433, DORMAN 684119 and MOPAR 4727752AA, among others listed above.

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

This group shows a single part: STANDARD MOTOR PRODUCTS RC33.

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

One part is listed for the 2021 Ram Promaster 2500 — MOPAR 68471115AA.

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

4 Speed Sensor parts for the 2021 Ram Promaster 2500 come from 3 brands — DELPHI, HOLSTEIN and VEMO.

The Economy section lists 1 option from HOLSTEIN — the catalog's value-priced group. HOLSTEIN 2VSS0711 is listed in this group.

In the Standard Replacement grade, DELPHI supplies 2 parts: built to original-equipment specification. A representative part number is DELPHI SS12392.

1 further part sits outside the graded sections, with the same engine-level match.

Listed part numbers: HOLSTEIN 2VSS0711, DELPHI SS12392 and DELPHI SS12393, plus the other parts above.

This table covers the Starter armatures. Read more

One part is listed for the 2021 Ram Promaster 2500 — BOSCH 1986SE0331.

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

13 Starter Motor parts are listed for the 2021 Ram Promaster 2500, from PURE ENERGY, MOPAR, TERREPOWER and 6 other brands. PURE ENERGY 19616N carries the "Popular" badge.

New: 5 parts, from PURE ENERGY, TYC, MOPAR and 2 other brands. A representative part number is PURE ENERGY 19616N.

Remanufactured: 8 parts, from PURE ENERGY, ACDELCO, BOSCH and 5 other brands. A representative part number is PURE ENERGY 19616.