CUMMINS 3978931 OIL SUCTION CONNECTION Original OEM part
CUMMINS
- Payment Methods
-
- SKU:
- CUMMINS 3978931
- MPN:
- 3978931
- Condition:
- New
- Shipping:
- $105.00 (Fixed Shipping Cost)

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Competitive Pricing
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Customer Support
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Description
- Precision Engineered for Optimal Oil Flow
- Ensures durable, leak-free engine operation under demanding conditions
- Exact OEM Fit for Guaranteed Compatibility and Reliability
- Manufactured by Cummins to uphold stringent quality and performance standards
The CUMMINS 3978931 OIL SUCTION CONNECTION – Powering Confidence Through Genuine Engineering
Crafted to maintain uninterrupted oil suction flow, this OEM part extends your Cummins engine’s lifespan by preventing contamination and maintaining fluid integrity. Designed for longevity and resilient performance, it embodies the trusted craftsmanship of Cummins. Invest now to safeguard your equipment’s health and unlock dependable operation. Choose quality that outlasts—because your power deserves no less.
Feature Spotlight: The Heart of Engine Vitality
- Precision machining ensures flawless fitment, eliminating oil leaks and maximizing engine efficiency
- Timely replacement prevents costly engine wear and preserves system reliability during critical operation
- Act now to secure an authentic Cummins connection part and protect your investment with genuine quality
Details
Product SKU: CUMMINS 3978931
Our knowledgeable team is ready to support your buying decisions with expert advice accessible through our help center. We are dedicated to helping you make a purchase that leads to the best repair outcome, ensuring your Cummins equipment returns to peak condition with confidence and care.
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