ONAN 3383385 ENGINE HEATER HARNESS ONAN/CUMMINS OEM part
ONAN
- Payment Methods
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- SKU:
- ONAN 338-3385
- MPN:
- 338-3385
- Condition:
- New

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Description
- ONAN 338-3385 is a genuine OEM engine heater harness designed specifically for ONAN and Cummins engines.
- This harness provides precise electrical connection to ensure consistent engine heating for cold starts.
- Constructed with durable materials to withstand harsh engine environments and temperature fluctuations.
- Guaranteed genuine OEM part manufactured by ONAN to meet original equipment standards.
ONAN 338-3385 – Powering Reliability, Precision, and Endurance in Every Connection
This is a ONAN ONAN 338-3385 engine heater harness replacement part designed for engine heating systems in ONAN and Cummins generators. This OEM authorized harness ensures proper electrical functionality, helping maintain optimal engine temperature during startup. Confirmed compatibility includes ONAN Quiet Diesel Series, Cummins Onan QD Series, and select commercial generator models. The harness delivers a precision fit and long-lasting performance under demanding conditions. Secure your genuine OEM ONAN 338-3385 harness today for dependable operation and lasting value. Trust in engineered strength — power your equipment with precision.
Precision Harness – Confidence in Every Connection
- Engineered to provide consistent electrical heating for reliable engine starts in cold environments.
- Timely replacement prevents engine start failures and supports safe generator operation.
- Order your genuine ONAN 338-3385 harness now to restore system functionality without delay.
Details
| Product Details | |
|---|---|
| SKU | ONAN 338-3385 |
| Brand | ONAN |
| Part Type | Engine Heater Harness |
| Purpose / Intended Use | This harness supplies electrical connection to the engine heater element, enabling reliable engine warming during cold starts. It was engineered to meet the exact specifications of ONAN and Cummins generators, ensuring seamless integration and optimal thermal protection for engine components. |
Our dedicated customer service team is available to provide expert assistance and ensure you select the correct part for your needs. Reach out via our Help Center for personalized support tailored to your equipment. We wish you a smooth purchase and a successful repair using your genuine ONAN parts.
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