This page lists 22 electrical parts for the 2020 Ram 4000, across 6 part types, covering both the 5.7L V8 and the 6.4L V8. Every part shows its brand, manufacturer part number and fitment notes.
On the 2020 Ram 4000, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. Most of the listed parts are Starter Motor (7 parts), Alternator / Generator (6 parts) and Keyless Entry Remote (4 parts). The other 3 part types cover the remaining 5 parts.
The 2020 Ram 4000 was sold with both the 5.7L V8 and the 6.4L V8. 9 parts fit every engine; the other 13 are engine-specific. Each part shows which engine(s) it fits.
8 brands supply electrical parts for the 2020 Ram 4000, led by DORMAN (6 parts), PURE ENERGY (5 parts) and FVP (4 parts), plus 5 more brands. Quality grades include Remanufactured and New.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2020 Ram 4000. 2 parts have it, including ACDELCO 3342898 (Alternator / Generator) and PURE ENERGY 17948N (Starter Motor). Each part number opens a page with every vehicle that part fits.
Alternator / Generator
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PURE ENERGY Fits: 5.7L V8 | 15034N | 🇲🇽 MX | 160 Amps | View on Amazon |
| VALEO Fits: 5.7L V8 | 501829 | 🇲🇽 MX | 220 Amps | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 5.7L V8 | 3342898 | 🇺🇸 US 🇨🇦 CA | GoldRemanufactured | View on Amazon |
| FVP Fits: 5.7L V8 | 15034 | 🇲🇽 MX | Remanufactured | View on Amazon |
| PURE ENERGY Fits: 5.7L V8 | 15034 | 🇲🇽 MX | Remanufactured | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALEO Fits: 6.4L V8 | 501829 | 🇲🇽 MX | 220 Amps | View on Amazon |
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.
6 Alternator / Generator parts for the 2020 Ram 4000 come from 4 brands — PURE ENERGY, VALEO, ACDELCO and 1 other brand. The "Popular" part is ACDELCO 3342898.
The New section lists 2 options from PURE ENERGY and VALEO — brand-new units rather than rebuilt ones. PURE ENERGY 15034N is listed in this group.
The Remanufactured section lists 3 options from ACDELCO, FVP and PURE ENERGY — factory-rebuilt units with new wear components. ACDELCO 3342898 is listed in this group.
1 further part sits outside the graded sections, with the same engine-level match.
Listed part numbers: ACDELCO 3342898, PURE ENERGY 15034N and VALEO 501829, plus the other parts above.
Battery
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH Fits: all 2020 4000 engines | S6587B | 🇲🇽 MX | AGMAGM | View on Amazon |
| DEKA Fits: all 2020 4000 engines | 9A94R | 🇲🇽 MX | IntimidatorAGM | View on Amazon |
| MOTORCRAFT Fits: all 2020 4000 engines | BAGM94RH7800E | 🇲🇽 MX | View on Amazon |
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.
3 Battery parts are listed for the 2020 Ram 4000, from BOSCH, DEKA and MOTORCRAFT. All of them fit every engine offered in the 2020 4000.
Listed part numbers: BOSCH S6587B, DEKA 9A94R and MOTORCRAFT BAGM94RH7800E.
Fuse Block
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2020 4000 engines | 956356 | 🇲🇽 MX | Battery Fuse | View on Amazon |
This table covers the fuse blocks that hold this vehicle's fuses.
This group shows a single part: DORMAN 956356.
Keyless Entry Remote
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2020 4000 engines | 99772ST | 🇲🇽 MX | Requires Locksmith Or Additional Scan Tool To Program | View on Amazon |
| DORMAN Fits: all 2020 4000 engines | 99509ST | 🇲🇽 MX | Requires Locksmith Or Additional Scan Tool To Program | View on Amazon |
| DORMAN Fits: all 2020 4000 engines | 99770ST | 🇲🇽 MX | Requires Locksmith Or Additional Scan Tool To Program | View on Amazon |
| DORMAN Fits: all 2020 4000 engines | 99510ST | 🇲🇽 MX | Requires Locksmith Or Additional Scan Tool To Program | View on Amazon |
This table covers the key fobs that lock, unlock and start the vehicle.
4 Keyless Entry Remote parts for the 2020 Ram 4000 come from DORMAN. Every part fits both the 5.7L V8 and the 6.4L V8.
Part numbers include DORMAN 99772ST, DORMAN 99509ST and DORMAN 99770ST, among others listed above.
Parking Aid Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2020 4000 engines | 684102 | 🇲🇽 MX | Fits Rear | View on Amazon |
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.
This group shows a single part: DORMAN 684102.
Starter Motor
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PURE ENERGY Popular Fits: 5.7L V8 | 17948N | 🇲🇽 MX | View on Amazon | |
| FVP Fits: 5.7L V8 | 17948N | 🇲🇽 MX | New | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 5.7L V8 | 3362185 | 🇺🇸 US 🇨🇦 CA | GoldRemanufactured | View on Amazon |
| FVP Fits: 5.7L V8 | 17948 | 🇲🇽 MX | Remanufactured | View on Amazon |
| PURE ENERGY Fits: 5.7L V8 | 17948 | 🇲🇽 MX | Remanufactured | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Fits: 6.4L V8 | 19971 | 🇲🇽 MX | Remanufactured | View on Amazon |
| PURE ENERGY Fits: 6.4L V8 | 19971 | 🇲🇽 MX | Remanufactured | View on Amazon |
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.
7 Starter Motor parts for the 2020 Ram 4000 come from 3 brands — PURE ENERGY, FVP and ACDELCO. The "Popular" part is PURE ENERGY 17948N.
The New section: 2 options from PURE ENERGY and FVP. PURE ENERGY 17948N is listed in this group.
The Remanufactured section: 3 options from ACDELCO, FVP and PURE ENERGY. ACDELCO 3362185 is listed in this group.
2 further parts sit outside the graded sections, with the same engine-level match.
Listed part numbers: PURE ENERGY 17948N and ACDELCO 3362185, plus the other parts above.
Buying Electrical Parts for a 2020 Ram 4000
On this vehicle, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors.
- Match the engine first. Some electrical parts fit every engine; others are 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, clean or renew the battery terminals and grounds with any charging-system repair.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Starter Motor and Alternator / Generator .
Frequently Asked Questions
How many electrical parts fit the 2020 Ram 4000?
Our catalog currently lists 22 electrical parts for the 2020 Ram 4000 across 6 subcategories and 8 brands, covering both the 5.7L V8 and the 6.4L V8. Each part is matched to the engine(s) it fits.
Do electrical parts differ between 2020 Ram 4000 engines?
Some do. 9 parts fit every engine; the other 13 are engine-specific. Each row (and the filter at the top) shows which. 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 problems on a 2020 Ram 4000?
Common symptoms include slow cranking on cold mornings, a battery light that flickers, dim lights at idle, or a check-engine code pointing at a sensor circuit. 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, clean or renew the battery terminals and grounds with any charging-system repair.
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 2020 Ram 4000 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 2020 Ram 4000?
First match the engine — each row shows which engine(s) the part fits. Then test before replacing — a failed alternator and a bad ground can look identical, and sensors are frequently condemned for wiring faults. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2020 Ram 4000
Electrical Parts for Other Ram 4000 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.