ONAN 503-1978 HOSE ASSEMBLY - ONAN Genuine OEM Part
ONAN
- Payment methods
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- SKU:
- ONAN 503-1978
- MPN:
- 503-1978
- Condition:
- New
- Availability:
- Ships (leaves our warehouse) within next business day if in stock


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Description
- Genuine ONAN OEM part ensuring perfect fit and factory-grade quality.
- Essential for maintaining optimal fluid flow and pressure within the generator system.
- Durably constructed to withstand demanding operational conditions and extend equipment life.
- Preserve system reliability and safety through authentic replacement components.
ONAN 503-1978 HOSE ASSEMBLY - Powering Precision and Endurance with ONAN Expertise
This hose assembly serves a critical role in your Onan generator’s fluid delivery mechanism, designed to uphold consistent flow and pressure under varied operating loads. Its precision-engineered construction supports the engine’s performance and protects against leaks or failures. Secure your generator’s durable operation by choosing the ONAN 503-1978 Hose Assembly. Invest confidently in a part that embodies engineering excellence and steadfast reliability.
Experience unparalleled authenticity and performance assurance
- Crafted by Onan to meet exacting specifications for dependable operation.
- Enhances fuel efficiency and reduces wear by maintaining optimal fluid dynamics.
- Resistant to chemical degradation, heat, and mechanical stress for extended service life.
- Supports compliance with safety standards and preserves warranty validity.
Details
Category: Hoses
Product SKU: ONAN 503-1978
We are committed to providing expert guidance throughout your purchase decisions. Should you have any questions or require assistance, our knowledgeable team is accessible through our help center to support you. We take pride in helping you achieve the best repair outcomes and ensuring your power equipment operates at peak performance for years to come.
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