ONAN 5050110 SQUARE HEAD PLUG ONAN Genuine OEM Part
ONAN
- Payment Methods
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- SKU:
- ONAN 505-0110
- MPN:
- 505-0110
- Condition:
- New

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Description
- Secure sealing designed for optimal engine performance
- Precision-engineered square head design for easy installation and durability
- Manufactured as an official ONAN OEM part to maintain equipment integrity
ONAN 505-0110 SQUARE HEAD PLUG: Engineered to Fit, Built to Last with ONAN
The ONAN 505-0110 SQUARE HEAD PLUG is a vital component crafted to deliver reliable sealing within your handheld two-cycle outdoor power equipment. This genuine ONAN ONAN 505-0110 OEM part ensures that your engine maintains proper function and prevents leaks, helping you preserve your mower or power tool’s original engineering and performance. Integrating this part is key for owners who value consistent operation and dependable maintenance.
Depend on ONAN’s Expertise to Keep Your Equipment Running Smoothly
The square head plug plays an essential role by securely sealing specific engine openings in your outdoor power equipment. By preventing oil, fuel, or compression leaks, the ONAN 505-0110 helps maintain engine efficiency and system integrity. This sealing function contributes to the smooth running of your zero-turn mower or other ONAN machines, supporting reliable startup, consistent power delivery, and extended equipment life.
Recognizing When Your ONAN Square Head Plug Needs Attention
Replacing the ONAN 505-0110 at the right time is important for preserving your equipment’s performance. Over time, wear or damage to this plug may compromise the seal, leading to issues that affect engine operation.
- Visible cracks or corrosion on the square head plug surface
- Signs of oil or fuel leaks near the plug area
- Decreased engine performance or unusual noises indicating potential sealing problems
Understanding Your ONAN 505-0110: Answers to Common Questions
Is this the genuine ONAN OEM part for my equipment?
Yes, the ONAN 505-0110 SQUARE HEAD PLUG is an authentic ONAN OEM part, designed to meet the exact specifications set by the original manufacturer for reliability and fit.
How do I confirm this plug fits my ONAN mower or equipment?
To ensure compatibility, verify your equipment's model and serial number and compare them with the part number ONAN 505-0110 before purchasing.
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