ONAN 3383992 ENGINE HEATER HARNESS Original ONAN/CUMMINS OEM part
ONAN
- Payment Methods
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- SKU:
- ONAN 338-3992
- MPN:
- 338-3992
- Condition:
- New
- Shipping:
- View Shipping Rates

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Description
- Empower your generator's resilience with authentic ONAN precision
- Designed for efficient engine heating to guarantee smooth cold starts
- Features robust construction to withstand rigorous operating environments
- Certified OEM component delivering full compatibility and long-term reliability
ONAN 338-3992 ENGINE HEATER HARNESS - The Heartbeat of Seamless Cold Weather Performance
The ONAN 338-3992 ENGINE HEATER HARNESS is expertly engineered to maintain your generator’s engine integrity during frigid conditions. Its durable OEM design delivers consistent heating functionality, ensuring dependable start-ups and extending engine life. Choose genuine ONAN parts to preserve system excellence and order your heater harness today—trust in longevity that powers your peace of mind.
Feature that Sparks Confidence and Continuity
- Precisely crafted harness ensures optimal heat transfer for reliable cold engine starts
- Timely replacement prevents engine wear and costly downtime in critical operations
- Act now to maintain your generator’s peak performance and avoid unexpected interruptions
Details
Product SKU: ONAN 338-3992
Our knowledgeable support team is dedicated to guiding you towards the exact ONAN parts your system demands. Reach out anytime via our help center for personalized assistance. We are committed to powering your successful repair with quality, care, and passion—wishing you a seamless installation and reliable operation ahead.
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