The part typically costs between about $80 and $400 for the component itself, depending on whether you buy rebuilt aftermarket, remanufactured OEM, or a new OEM unit, plus any core charges.
Prices vary by engine option (3.5L V6 vs. 5.7L Hemi), supplier, and whether labor is included. The following breakdown covers common sources and what you can expect to pay, along with tips for shopping and installation.
Prices by source and part type
Before listing common options, here is a snapshot of how price scales across different sources and configurations.
- New OEM (dealer): typically around $250–$500. Expect possible core charges and higher prices for certain engines.
- Remanufactured OEM or stock aftermarket: typically about $120–$260. Usually includes a warranty and may or may not include core charges.
- New aftermarket (non-OEM): typically about $80–$180. Often the lowest upfront price but with varying warranty terms.
In short, choosing OEM vs. aftermarket, and whether the unit is rebuilt or new, drives the biggest difference in price. Core charges and taxes can further affect the final total.
Labor and total installed cost
Installation costs can significantly impact your overall bill. The following ranges reflect common shop rates in the United States.
- Labor to install: typically $100–$200, depending on the shop, location, and whether additional components (belt, tensioner, or wiring) are addressed at the same time.
- Total installed cost (parts + labor): roughly $180–$700, depending on the part chosen and local labor rates.
Bottom line: hunting for a good deal on the part and pairing it with a favorable labor rate can keep the total well below the upper end of the range.
Key factors to ensure you buy the right unit
To avoid mismatches or undersized charging, consider these criteria when shopping for a 2005 Chrysler 300 alternator.
- Amperage rating: common options are around 140A for base engines and up to 160–170A for the Hemi version; verify the exact rating for your VIN.
- Engine compatibility: confirm the unit fits your 2005 model year and engine, as mismatches can cause charging or belt alignment issues.
- Warranty: check the length and coverage; remanufactured units often come with 1–3 year warranties.
- Core charge: many vendors apply a core deposit that’s refunded when you return the old alternator.
Taking these factors into account helps ensure you get reliable performance without overpaying.
Where to shop
Common places to look for a replacement include:
- dealership (OEM/Mopar parts): usually the most expensive but guaranteed compatibility
- auto parts stores (AutoZone, O'Reilly, Advance): a mix of remanufactured OEM and aftermarket units
- online retailers (RockAuto, Parts Geek, Amazon): broad selection and price comparison
- local auto repair shops or electrical specialists: may offer rebuilder services or installation deals
Compare prices, warranties, and shipping options, and consider total cost including any required labor when budgeting.
Summary
The 2005 Chrysler 300 alternator price range varies widely based on engine, source, and whether the unit is new or remanufactured. Expect roughly $80–$180 for a new aftermarket unit, $120–$260 for a remanufactured OEM or aftermarket unit, and $250–$500 for a new OEM unit, plus core charges. Labor adds roughly $100–$200, bringing total installed costs to about $180–$700 or more depending on parts and location. Always confirm the amperage, fitment for your VIN, and warranty terms before buying, and shop around for the best overall value.


