ONAN 5030103 BULK HOSE Original ONAN/CUMMINS OEM part
ONAN
- Payment Methods
-
- SKU:
- ONAN 503-0103
- MPN:
- 503-0103
- Condition:
- New
- Shipping:
- View Shipping Rates

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Description
- Engineered for endurance, crafted for precision – trust your power with ONAN.
- Durable bulk hose designed for seamless fuel and coolant flow, resisting wear under demanding conditions.
- Ensures peak engine efficiency by maintaining consistent fluid delivery, helping to prolong generator lifespan.
- Genuine OEM ONAN component guaranteed to meet exacting specifications for perfect fit and reliability.
ONAN 503-0103 BULK HOSE - The Backbone of Reliable ONAN Power Generation
Designed exclusively for ONAN systems, the 503-0103 bulk hose delivers unmatched longevity and performance, crafted to endure the rigors of continuous operation. Using this OEM part guarantees compatibility and safeguards your generator’s health. Invest in reliability—equip your system with authentic ONAN components today and experience uninterrupted power when it matters most.
Feature that Saves Your Power
- Robust material composition ensures resistance to cracks, leaks, and degradation under heat and pressure.
- Replacing worn hoses promptly prevents costly engine damage and optimizes your generator’s performance.
- Order now to maintain your generator’s reliability and avoid unexpected downtime with this essential OEM part.
Details
Product SKU: ONAN 503-0103
Our team is dedicated to offering expert guidance tailored to your needs—reach out anytime through our help center to ensure the right choice for your ONAN generator. We are passionate about supporting your journey towards a seamless repair and long-lasting power solution.
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