For a 2020 Dodge Ram, a replacement alternator generally costs about $300 to $700 when you include parts and labor. The exact price depends on whether you choose a remanufactured, aftermarket, or OEM Mopar part, and whether you do the work yourself or hire a shop.
Ram's 2020 lineup includes the Ram 1500 with multiple engines, and price variability reflects the part type and the installation method. This article outlines typical price ranges, what affects cost, where to buy, and tips to save.
What affects the price
Several factors determine the overall cost: the part type (OEM vs aftermarket vs remanufactured), amperage and compatibility with the engine, warranty options, labor rates, and regional price differences. Online marketplaces may also include core charges or shipping costs.
Parts options and price ranges
Before listing typical price ranges, it's useful to understand the main options you'll encounter when shopping for a 2020 Ram alternator.
- Remanufactured (rebuilt) alternators: commonly the most affordable option, typically around $120 to $250 for parts; labor is saved if you DIY, or added if you hire a shop.
- New aftermarket alternators: broader availability and warranties; usually about $180 to $400 for parts; labor extra if installed professionally.
- New OEM Mopar alternators: designed for the exact fit and spec; commonly $350 to $650 for parts; labor may push total toward $450 to $900 depending on installation and shop rates.
- Core charges and accessories: some sellers apply a core charge that is refunded when you return the old unit; shipping and handling can affect total delivered price.
Note: These ranges reflect typical U.S. market prices as of 2024–2026 but can vary by model (Ram 1500 vs heavy-duty), engine variant, and local taxes or promotions.
Where to buy
Shopping options include dealer parts departments, independent auto parts retailers, and online marketplaces. Each channel has trade-offs in price, warranty, and convenience.
- Auto parts retailers (e.g., AutoZone, Advance Auto Parts, O'Reilly): strong warranties, in-store pickup, and DIY-friendly return policies.
- Dealership or Mopar OEM parts: best match for exact spec and may come with robust warranty, but often at higher price.
- Online marketplaces and direct-from-supplier websites: wide selection and sometimes lower prices; watch for shipping and core policies.
- Remanufactured specialists: can offer refurbished units with warranties; price varies by amperage and warranty terms.
Always check the part number and compatibility with your specific Ram model and engine. Some engines require different alternators or mounting kits.
DIY vs professional replacement
Whether you replace the alternator yourself or have a shop handle the job affects total costs. DIY saves labor, but you need the right tools and basic electrical knowledge. Professional replacement includes labor, often with a warranty on parts and work.
DIY considerations
If you choose to do it yourself, consider these factors before starting.
- Tools and safety: basic hand tools, a belt tensioner tool or breaker bar, and eye protection.
- Time and space: a clean workspace with room to maneuver under the hood; expect 1–2 hours for a typical Ram 1500 engine bay depending on access.
- Warranty and returns: some aftermarket parts may have shorter warranties; ensure compatibility with your VIN and engine.
Regardless of option, verify the belt and tensioner condition during replacement, as a worn belt can mimic charging problems or cause belt slip.
Cost breakdown by scenario
Here's a broad look at how the total might stack up depending on your approach.
- DIY with an aftermarket remanufactured unit: parts typically $120-$250; no labor; total around $120-$250 (plus tax/shipping).
- Professional install with aftermarket new unit: parts $180-$400 plus labor $100-$200; total roughly $280-$600.
- Professional install with OEM Mopar unit: parts $350-$650 plus labor $100-$250; total roughly $450-$900.
Prices are estimates and can vary by location, vehicle configuration, and labor rates; call ahead for precise quotes and confirm the correct part for your VIN.
Summary
The cost of an alternator replacement for a 2020 Dodge Ram varies widely based on part choice, whether you DIY or hire a pro, and your location. Expect a parts-only range of about $120 to $650, with total installed costs typically between $280 and $900 depending on OEM status, amperage, and labor. Shopping around and confirming compatibility with your Ram’s engine and VIN can help you land the best price.
Is it worth fixing or replacing an alternator?
If your vehicle's alternator is relatively new and has low mileage, repair may be a cost-effective solution. However, if the alternator is old or has a history of frequent problems, replacement may provide a longer-term solution and better value for money.
How much does an alternator cost for a Dodge Ram 1500?
between $403 and $640
The average cost for a Dodge Ram 1500 Alternator Replacement is between $403 and $640. Labor costs are estimated between $102 and $150 while parts are priced between $301 and $490.
How much does it cost to replace an alternator on a 2020 Ram 1500?
The average cost for a 2020 Ram 1500 Alternator Replacement is between $922 and $973. Labor costs are estimated between $110 and $161 while parts are typically priced around $812.
How do I know if my Ram 1500 alternator is bad?
If your Dodge's battery warning light is on, it's a clear sign that something is wrong with your alternator. The warning light can be located on the dashboard and may resemble a battery or a lightning bolt. This warning light can indicate a variety of issues, but a failing alternator is one of the most common causes.