CUMMINS 5266390 ALTERNATOR Original OEM part
CUMMINS
- Payment Methods
-
- SKU:
- CUMMINS 5266390
- MPN:
- 5266390
- Condition:
- New
- Shipping:
- $45.00 (Fixed Shipping Cost)

Available Inventory
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Competitive Pricing
Enjoy competitive rates and great deals on every order.
Customer Support
Our team is always ready to answer your questions and provide the best assistance.
Description
- Empower your engine with unmatched precision and durability
- High-output alternator delivering consistent voltage regulation
- Designed for long service life and optimal thermal management
- 100% Genuine OEM component from Cummins, guaranteeing perfect fit and reliability
Charged for Excellence: The CUMMINS 5266390 ALTERNATOR Ignites Unrivaled Power and Trust
Built to support critical power systems, the CUMMINS 5266390 ALTERNATOR seamlessly converts mechanical energy into dependable electrical output, ensuring uninterrupted operation under demanding conditions. Crafted as an OEM part, it guarantees long-term durability and system harmony. Secure your engine’s future today—invest in authentic Cummins reliability.
Essential Advantage That Drives Confidence
- Robust voltage stability maintains consistent power delivery, minimizing downtime
- Timely replacement prevents costly engine failures and preserves overall health
- Choose genuine Cummins parts now to protect warranty coverage and maximize performance
Details
Product SKU: CUMMINS 5266390
Our knowledgeable support team is ready to guide you through selecting the right part to fit your power system’s exact needs. Reach out anytime via our help center—your satisfaction and successful repair journey are our highest priorities. We look forward to helping you achieve enduring performance and peace of mind.
Returns Information
You may return new, non-used, and unopened items within 30 days of delivery date under a 20% re-stocking fee in case you do not need it anymore or you have ordered a wrong item.
We cannot accept any returns on "Pumps, Motors, Electrical Items & Transmissions" whether the product is used or new, however in rare cases we may allow an exception under a 40% re-stocking fee.
If you need to return an item, please go to our chat located in the lower right corner, select the option “Returns” and follow the steps to submit your request. Please have on your hands pictures of the item, they will be requested. You will shortly receive an answer from our Customer Service Team providing authorization and return instructions. Likewise, if an exception cannot be authorized, you will receive an answer from us. No returns will be accepted in our warehouse without an RMA number (Return Merchandise Authorization).
All return shipping costs are on customer's responsibility and will not be refundable.
Returns are inspected once they arrive. If the inspection determines that the items are used, non-resellable condition, or damaged, the return will be denied and the customer will be contacted to ship the parts back at the customers' request and cost.
Cancellations
You may cancel your order, in whole or in part, only if the part is backordered and it isn't ready to ship. Once an order has been shipped, sent from the supplier to our warehouse, or in the dispatch line, we cannot cancel it. If your order is shipped, you will need to follow our return policy to return the items you no longer want.
If you need to cancel an order or item for any reason, you may submit a cancellation request directly through your account to the "more options" section or contact us by live chat. All the cancellation requests are evaluated before its approval. If you submit a cancellation request out of business hours, on a weekend or holiday, it will be processed on the next available business day.
Please allow for the cancellation to be confirmed, and check your account for updates on the status. The cancellation process usually takes 24-48 hours to be confirmed by email. We will process your cancellation request and issue a refund to your original payment method.
In the event that an item becomes no longer available (NLA), we will cancel it from your order and ship the remaining items to you. We will send you an email notification if we cancel any part of your order.
Some products may contain chemicals known to the State of California to cause cancer or reproductive harm. ⚠️ WARNING: www.P65Warnings.ca.gov