ONAN A040U288 HEATER HARNESS Original ONAN/CUMMINS OEM part
ONAN
- Payment Methods
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- SKU:
- ONAN A040U288
- MPN:
- A040U288
- Condition:
- New
- Shipping:
- View Shipping Rates

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Description
- Designed for dependable warmth and sustained power flow in your generator system.
- Precision-engineered to ensure flawless electrical connectivity and longevity.
- Withstands demanding operating conditions to guarantee consistent heater performance.
- 100% genuine OEM part from ONAN for perfect compatibility and reliability.
ONAN A040U288 HEATER HARNESS – Powering Your Generator’s Core with Trusted Excellence
The ONAN A040U288 Heater Harness is crafted to deliver enduring service life and uncompromising quality. As an original equipment manufacturer component, it ensures your generator’s heater system maintains optimum efficiency and safety. Invest in this essential part today to secure reliable warmth and safeguard your equipment’s performance. Choose genuine ONAN parts for peace of mind every time.
Essential Feature Highlight – Built to Support Your Heater’s Heartbeat
- Exact fitment and robust design provide consistent electrical conductivity for reliable heating function.
- Timely replacement prevents heater failure and costly downtime, preserving your generator's peak operation.
- Order now to maintain system integrity and extend the lifespan of your power equipment.
Details
Product SKU: ONAN A040U288
Our commitment extends beyond providing quality parts — our knowledgeable support team is always ready to guide you through your purchasing decisions. Feel free to reach out via our help center for personalized assistance. We genuinely hope this replacement heater harness brings you a smooth repair experience and long-lasting generator performance.
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