What Alternator Fits a 2020 Jeep Grand Cherokee?
What decides alternator fit on the 2020 Jeep Grand Cherokee, where to find your VIN, and how to replace it.
VinSnap does not have a verified alternator part number for the 2020 Jeep Grand Cherokee yet. Which alternator fits depends on the engine, the amperage output, the pulley type and the electrical connector, so compare those on the part you are replacing. The 2020 Grand Cherokee was built with 27 engine variants (from 3.0 L to 6.4 L), so the right alternator depends on which one yours has. The 17-character VIN is on the driver-side dashboard at the base of the windshield and on the sticker in the driver’s door jamb; it identifies the exact engine and trim.
Last updated: · Source: TecDoc catalogue (engines)
2020 Jeep Grand Cherokee alternator: key facts
| Verified part number | None on file yet |
|---|---|
| Engine variants (2020) | 27, from 3.0 L to 6.4 L |
| Fit is decided by | The engine, the amperage output, the pulley type and the electrical connector |
| NHTSA recalls: electrical system | None of 3 on record |
| DIY | Advanced DIY (test charging system first) |
Sources: TecDoc catalogue (engines), NHTSA recalls.
Alternator: what it does & when to replace it
The alternator charges the battery and powers the electrical system while the engine runs. Failure signs include a battery warning light, dimming or flickering lights, dead battery despite a recent replacement, a whining or grinding noise, or a burning-rubber smell. A failing alternator will eventually leave you stranded once the battery drains. Replacement is a moderate-to-advanced DIY job — access and serpentine-belt removal vary a lot by vehicle, and some require removing other components first. Have the charging system tested before replacing, since the battery or belt is sometimes the real culprit.
DIY difficulty: Advanced DIY (test charging system first). Always confirm the correct part for your exact build by VIN before buying.
Which engine does your 2020 Jeep Grand Cherokee have?
The 2020 Jeep Grand Cherokee was sold with 27 engine variants, and the correct alternator can differ between them. This is the single thing a year/make/model dropdown cannot tell you.
| Engine | Fuel | Cylinders | Years |
|---|---|---|---|
| 3.6 L 286 hp | Petrol | 6 | 2010–now |
| 5.7 L 352 hp | Petrol | 8 | 2010–now |
| 3.0 L 190 hp | Diesel | 6 | 2011–now |
| 3.0 L 241 hp | Diesel | 6 | 2011–now |
| 6.4 L 468 hp | Petrol | 8 | 2011–now |
| 3.6 L 286 hp | Petrol/Ethanol | 6 | 2010–now |
| 3.6 L 294 hp | Petrol/Ethanol | 6 | 2010–now |
| 5.7 L 366 hp | Petrol | 8 | 2011–now |
| 3.6 L 284 hp | Petrol | 6 | 2010–now |
| 3.0 L 234 hp | Petrol | 6 | 2013–now |
| 3.6 L 290 hp | Petrol | 6 | 2010–now |
| 3.0 L 243 hp | Diesel | 6 | 2014–now |
| 3.0 L 250 hp | Diesel | 6 | 2013–now |
| 6.4 L 476 hp | Petrol | 8 | 2011–now |
| 3.6 L 294 hp | Petrol | 6 | 2013–now |
| 6.4 L 472 hp | Petrol | 8 | 2011–now |
| 3.0 L 238 hp | Petrol | 6 | 2014–now |
| 3.6 L 281 hp | Petrol | 6 | 2010–now |
| 5.7 L 364 hp | Petrol | 8 | 2011–now |
| 5.7 L 360 hp | Petrol | 8 | 2013–now |
| 6.4 L 481 hp | Petrol | 8 | 2014–now |
| 3.6 L 299 hp | Petrol/Ethanol | 6 | 2017–now |
| 3.6 L 296 hp | Petrol/Ethanol | 6 | 2017–now |
| 3.0 L 218 hp | Diesel | 6 | 2011–now |
| 6.4 L 477 hp | Petrol | 8 | 2014–now |
| 6.2 L 717 hp | Petrol | 8 | 2018–now |
| 6.2 L 710 hp | Petrol | 8 | 2017–now |
Engine variants catalogued for this model (TecDoc), filtered to those built around 2020. We hold catalogued part numbers for the base engine only — decode your VIN and we resolve your exact engine, then the exact part. Full dimensions and specifications for this vehicle are on the 2020 Jeep Grand Cherokee overview.
How to replace the alternator on a 2020 Jeep Grand Cherokee
- 1Test the charging system first to confirm the alternator, not the battery or belt, is at fault.
- 2Disconnect the battery negative terminal, then release the serpentine belt from the alternator using the tensioner.
- 3Disconnect the alternator’s electrical connectors and main charging cable.
- 4Unbolt and remove the old alternator (you may need to remove other components for access).
- 5Fit the new alternator, reconnect wiring, refit the belt with correct routing, reconnect the battery, and confirm ~13.5–14.5V at idle.
⚠ Access and belt routing vary widely by vehicle — photograph the belt routing before removal.
These are general steps for the electrical category. Exact fastener locations, torque values, and the correct part number depend on your 2020 Jeep Grand Cherokee’s build — confirm by VIN before you start.
Shop alternator for your 2020 Jeep Grand Cherokee
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Decode my VIN →Frequently asked questions
What alternator fits a 2020 Jeep Grand Cherokee?
VinSnap has no verified alternator part number for the 2020 Jeep Grand Cherokee yet. Match on the engine, the amperage output, the pulley type and the electrical connector; the 17-character VIN is on the driver-side dashboard at the base of the windshield and on the sticker in the driver’s door jamb, and it pins down the engine and trim.
How often should the alternator on a 2020 Jeep Grand Cherokee be replaced?
The alternator charges the battery and powers the electrical system while the engine runs. Failure signs include a battery warning light, dimming or flickering lights, dead battery despite a recent replacement, a whining or grinding noise, or a burning-rubber smell. VinSnap has no manufacturer-specific interval on file for the 2020 Jeep Grand Cherokee; the owner’s manual has the official schedule.
Can I replace the alternator on a 2020 Jeep Grand Cherokee myself?
Advanced DIY (test charging system first). Allow about 1–3 hours. Tools: socket set, serpentine belt tool, torque wrench, multimeter. Access and belt routing vary widely by vehicle — photograph the belt routing before removal.