DWQA QuestionsCategory: Power SystemsHow Much Should It Cost to Replace an Alternator?
Mostafaaa.menaaa@gmail.com asked 6 months ago
It should cost around $350-$700 to replace a basic alternator. Heavy-duty engines or high-end alternators should set you back around $700 - $1,500. Complex repairs that involve additional parts will cost you $1500+.  Keep in mind that these prices are estimated ranges based on the market’s average, as it’s quite difficult to pinpoint an accurate estimation there.  For example, a Cummins alternator replacement may cost even higher (up to $1,800).  

Factors That Affect the Price of an Alternator

The wide range of alternator replacement costs is attributed to various factors, here are some of them:   

Engine Type and Size 

Large industrial or marine diesel engines like the Cummins QSX15 or Caterpillar C17 require high-output alternators with robust construction, leading to significantly higher prices compared to smaller engines used in generators or agricultural machinery. Further, even if the engines are of the same size, diesel engines with higher power outputs often require greater electrical generation capacity, which is reflected in the alternators’s amperage rating and price.   

Alternator Specifications

Diesel emergency power generators often require dedicated voltage regulation systems to ensure stable power supply for sensitive electronics Such advanced alternators with integrated regulators often cost more than regular alternators.   

Brand and Manufacturer

OEM parts directly from the engine manufacturer are usually more expensive than third-party parts. However, they offer guaranteed compatibility and performance. Still, if you know what you're doing, high-quality aftermarket alternatives can be cheaper but require careful selection to ensure compatibility and reliability.  

Installation and Labor Costs

Labor and complexity of installation are other contributors to the overall alternator replacement cost. Bigger, more complex power generators often require a skillful technician to install them. This is reflected as an additional cost besides the price of the alternator.   

Final Words

The price of replacing diesel engine alternators may be a little high, but that’s not something you should worry about too much if you purchase your emergency power generator from a reputable company like Precision Industries With nearly 20 years of experience in the field of diesel engine generators, we have the record and the reviews to speak for us.  Pay us a visit at PI Dubai to see what we have to offer, and don’t forget to send us any questions you have. Our support team will be more than happy to get back to you.