CUMMINS 3939919 O-RING SEAL - CUMMINS Genuine OEM Part
CUMMINS
- Payment methods
-
- SKU:
- CUMMINS 3939919
- MPN:
- 3939919
- Condition:
- New
- Availability:
- Ships (leaves our warehouse) within next business day if in stock


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Description
- This is a Genuine OEM Cummins part ensuring perfect fit and lasting reliability.
- Specifically engineered to provide superior sealing performance in your engine system.
- Helps maintain system pressure and prevents fluid or gas leaks under demanding operating conditions.
- Experience uncompromised quality designed to safeguard your engine’s efficiency and longevity.
CUMMINS 3939919 O-RING SEAL - The Essential Link in Cummins' Legacy of Precision Power
The CUMMINS 3939919 O-RING SEAL serves as a critical component in maintaining a secure seal within Cummins’ powertrain assemblies, protecting your engine from leaks and contamination. Its superior material composition ensures resilience against heat, pressure, and chemical exposure, keeping your generator or engine running safely and efficiently. Secure your power system’s dependability today by adding this essential part to your cart—because true performance depends on genuine precision.
Benefit Highlights Crafted for Reliability
- Authentic Cummins OEM guarantees flawless compatibility and maintains original equipment standards.
- Designed to minimize leakage and preserve critical engine functions under extreme conditions.
- Durability engineered for long service life, reducing maintenance needs and downtime.
- Contributes directly to efficient engine operation, helping preserve emission standards and fuel economy.
- Manufactured with advanced materials to resist aging, temperature variations, and chemical attack.
Details
Category: O Ring Seals
Product SKU: CUMMINS 3939919
Our team is committed to guiding you through every step of your purchase to ensure the right fit and optimal performance. Reach out via our help center anytime for expert advice tailored to your power system needs. We sincerely hope this genuine Cummins part supports a successful repair and long-lasting operation for your equipment.
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