ONAN 503-1899 COOLANT HOSE - ONAN Genuine OEM Part
ONAN
- Payment methods
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- SKU:
- ONAN 503-1899
- MPN:
- 503-1899
- Condition:
- New
- Availability:
- Ships (leaves our warehouse) within next business day if in stock
- Shipping:
- View Shipping Rates

Available Inventory
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Competitive Pricing
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Customer Support
Our team is always ready to answer your questions and provide the best assistance.
Description
- Genuine ONAN replacement part designed to meet exact factory specifications
- Maintains efficient coolant flow to prevent engine overheating and ensure stable operation
- Durable construction resists wear, leaks, and temperature extremes for extended service life
- Engineered precision to support reliable power generation under demanding conditions
ONAN 503-1899 COOLANT HOSE - Precision Cooling Crafted for Enduring Performance
The ONAN 503-1899 coolant hose plays a critical role in managing your generator’s engine temperature, preventing overheating and preserving engine health for uninterrupted power delivery. Designed by Onan engineers, this OEM hose guarantees seamless compatibility and durability. Secure your equipment’s efficiency by choosing this essential component today and experience the hallmark of genuine Cummins/Onan excellence.
Benefit That Elevates Your Power System Confidence
- Certified genuine ONAN part ensures full factory compatibility and warranty compliance
- Constructed with high-grade materials to endure rigorous thermal cycles and pressure fluctuations
- Supports optimal coolant circulation enhancing engine performance and fuel economy
- Contributes to emission control by maintaining proper operating temperature
- Minimizes the risk of leaks and engine downtime, securing your power system’s reliability
Details
Category: Coolant Hoses
Product SKU: ONAN 503-1899
Our knowledgeable team is ready to assist you in selecting the perfect replacement part tailored to your generator’s demands. Reach out anytime via our help center to receive expert guidance for a smooth transaction and optimal installation. We are committed to your satisfaction and look forward to helping you achieve a successful repair and 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