The 2020 Ram 4000 has 12 interior parts with verified fitment on this page — 6 part types and 2 brands, covering both the 5.7L V8 and the 6.4L V8. Each part includes a manufacturer part number and application notes.
The interior on the 2020 Ram 4000 covers cabin hardware — seat components, handles, switch bezels, carpet, pedals and the pieces that take daily wear. The largest groups are Window Regulator & Motor Assembly (4 parts), Door Panel Retainer / Clip (2 parts) and Window Motor (2 parts). The other 3 part types cover the remaining 4 parts.
The 2020 Ram 4000 was sold with both the 5.7L V8 and the 6.4L V8. All 12 parts on this page fit every engine.
2 brands supply interior parts for the 2020 Ram 4000, led by DORMAN (10 parts) and AISIN (2 parts).
Each part number listed for the 2020 Ram 4000 opens a page with every vehicle that part fits.
Door Panel Retainer / Clip
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2020 4000 engines | 963149D | 🇲🇽 MX | Fits Front6 mm | View on Amazon |
| DORMAN Fits: all 2020 4000 engines | 700716 | 🇲🇽 MX | Fits Front6 mm | View on Amazon |
This table covers the Door Panel retainers and clips.
DORMAN supplies both parts for the 2020 Ram 4000. All of them fit every engine offered in the 2020 4000.
This group includes DORMAN 963149D and DORMAN 700716.
Parking Brake Pedal Pad
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2020 4000 engines | 20764 | 🇲🇽 MX | View on Amazon |
This table covers the Parking Brake Pedal pads. Typical signs include squeal, grind, or a wear-indicator scrape. Replace pads as an axle set and inspect the rotor or drum they ride on.
This group shows a single part: DORMAN 20764.
Seat Cushion
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2020 4000 engines | 926860 | 🇲🇽 MX | Front Left | View on Amazon |
This table covers the seat cushions.
This group shows a single part: DORMAN 926860.
Window Motor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2020 4000 engines | 742438 | 🇲🇽 MX | Front Right | View on Amazon |
| DORMAN Fits: all 2020 4000 engines | 742439 | 🇲🇽 MX | Front Left | View on Amazon |
This table covers the motors that drive a window regulator. 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.
DORMAN supplies both parts for the 2020 Ram 4000. All of them fit every engine offered in the 2020 4000.
This group includes DORMAN 742438 and DORMAN 742439.
Window Regulator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: all 2020 4000 engines | 749285 | 🇲🇽 MX | Rear RightPL Model | View on Amazon |
| DORMAN Fits: all 2020 4000 engines | 749284 | 🇲🇽 MX | Rear LeftPL Model | View on Amazon |
This table covers the regulators that raise and lower each door glass.
DORMAN supplies both parts for the 2020 Ram 4000. All of them fit every engine offered in the 2020 4000.
Part numbers include DORMAN 749285 and DORMAN 749284.
Window Regulator & Motor Assembly
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AISIN Fits: all 2020 4000 engines | RPACH109 | 🇲🇽 MX | Front LeftPL Model | View on Amazon |
| AISIN Fits: all 2020 4000 engines | RPACH130 | 🇲🇽 MX | Front RightPL Model | View on Amazon |
| DORMAN Fits: all 2020 4000 engines | 748189 | 🇲🇽 MX | Front RightPL Model | View on Amazon |
| DORMAN Fits: all 2020 4000 engines | 748188 | 🇲🇽 MX | Front LeftPL Model | View on Amazon |
This table covers combined regulator-and-motor assemblies for a door.
4 Window Regulator & Motor Assembly parts for the 2020 Ram 4000 come from 2 brands — AISIN and DORMAN. Every part fits both the 5.7L V8 and the 6.4L V8.
Part numbers include AISIN RPACH109, AISIN RPACH130 and DORMAN 748189, among others listed above.
Buying Interior Parts for a 2020 Ram 4000
On this vehicle, the interior covers cabin hardware — seat components, handles, switch bezels, carpet, pedals and the pieces that take daily wear.
- You do not need to pick an engine: every interior part on this page fits both the 5.7L V8 and the 6.4L V8.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the retainer clips with any panel removal — they are cheap insurance against squeaks.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Window Regulator & Motor Assembly and Door Panel Retainer / Clip .
Frequently Asked Questions
How many interior parts fit the 2020 Ram 4000?
Our catalog currently lists 12 interior parts for the 2020 Ram 4000 across 6 subcategories and 2 brands, covering both the 5.7L V8 and the 6.4L V8. Each part is matched to the engine(s) it fits.
Do interior parts differ between 2020 Ram 4000 engines?
No. On this page every interior part fits both the 5.7L V8 and the 6.4L V8. 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 interior problems on a 2020 Ram 4000?
Common symptoms include a door handle that works only from outside, sagging headliner, a window switch that needs two presses, or seat adjusters that stick. 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 the retainer clips with any panel removal — they are cheap insurance against squeaks.
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?
Every part on this page already fits both the 5.7L V8 and the 6.4L V8. Then interior plastics are often color- and trim-specific — check the notes column against your trim level before ordering. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2020 Ram 4000
Interior 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.