ONAN 503-1533-03 - PREHEAT HOSE ONAN/CUMMINS - Original OEM part
ONAN
- Payment methods
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- SKU:
- ONAN 503-1533-03
- MPN:
- 503-1533-03
- Availability:
- Ships (leaves our warehouse) within next business day if in stock
- Shipping:
- View Shipping Rates

Available Inventory
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Competitive Pricing
Enjoy competitive rates and great deals on every order.
Customer Support
Our team is always ready to answer your questions and provide the best assistance.
Description
- Purpose-built for efficient preheat delivery to secure smooth engine starts
- Constructed with premium materials ensuring resistance to heat and wear
- Certified as an original ONAN OEM replacement part guaranteeing perfect fit and function
ONAN 503-1533-03 PREHEAT HOSE - Power your equipment with the trusted strength of ONAN innovation
Designed to maintain optimal preheat operation, the ONAN 503-1533-03 PREHEAT HOSE delivers dependable service life by precisely meeting factory specifications. Rely on this genuine OEM component to safeguard your engine’s longevity and performance. Don't wait—secure your authentic ONAN part today for consistent, hassle-free starts.
Lasting Features to Keep Your Engine Running Smoothly
- Engineered for exceptional heat resistance and durability to endure demanding conditions
- Timely replacement prevents startup issues and protects engine components from damage
- Purchase now to ensure reliability and preserve your equipment’s operational warranty
Details
Category: Hoses-Engines Parts
Product SKU: ONAN 503-1533-03
Our customer support team is ready to provide expert guidance to help you select the right part with confidence. Reach out anytime via our help center for personalized assistance. We appreciate your trust and wish you an excellent purchase and successful repair experience.
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