ONAN 503-2143-01 HOSE VAPOR LIQUID PETROLEUM GAS - ONAN Genuine OEM Part
ONAN
- Payment methods
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- SKU:
- ONAN 503-2143-01
- MPN:
- 503-2143-01
- Condition:
- New
- Availability:
- Ships (leaves our warehouse) within next business day if in stock


Available Inventory
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Competitive Pricing
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Customer Support
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Description
- Certified as a Genuine ONAN OEM part ensuring perfect compatibility and durability
- Designed to efficiently handle vapor and liquid phases of petroleum gas for smooth fuel flow
- Manufactured to meet strict safety standards, minimizing leak risks and enhancing engine performance
- Enhances long-term reliability under demanding operational conditions
ONAN 503-2143-01 HOSE VAPOR LIQUID PETROLEUM GAS - Empowering your power source with trusted Cummins precision
This specialized hose plays a vital role in delivering vapor and liquid petroleum gas safely and consistently to Onan generators. Its robust construction preserves fuel integrity, protects engine components, and supports continuous power generation in critical applications. Secure your system’s efficiency by choosing the ONAN 503-2143-01 hose today — where engineering excellence safeguards your energy needs.
Benefit that connects quality with your peace
- Original OEM build guarantees seamless fit and optimal performance
- Resists degradation from petroleum gases, extending service intervals
- Enhances fuel system reliability to avoid emergency downtime
- Improves overall engine health for better fuel economy and reduced emissions
Details
Category: Hoses
Product SKU: ONAN 503-2143-01
Our knowledgeable support team is here to guide you in selecting the right parts for your Cummins-Onan equipment, ensuring your purchase matches your exact needs. Reach out anytime through our help center for expert advice and assistance. We are committed to helping you achieve a successful repair and reliable operation 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