CUMMINS 3945866 VALVE TAPPET Original OEM part PACK OF 2
CUMMINS
- Payment Methods
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- SKU:
- CUMMINS 3945866
- MPN:
- 3945866
- Condition:
- New
- Shipping:
- View Shipping Rates

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Description
- Engineered to uphold Cummins' legacy of power and reliability
- Precision-machined valve tappet designed for optimal valve timing and reduced engine wear
- Durable materials that resist high-temperature and mechanical stresses to extend engine life
- 100% genuine OEM component guaranteeing exact compatibility and maintaining your system warranty
CUMMINS 3945866 VALVE TAPPET–Powering dependable performance with the heart of Cummins engineering
Purpose-built to maintain valve clearance stability and optimize combustion efficiency, the CUMMINS 3945866 VALVE TAPPET delivers enduring performance that safeguards your engine’s longevity. This genuine OEM part is a critical investment for sustaining your generator or engine’s robust operation. Take control of your power system’s reliability today—choose proven Cummins quality.
Feature that fuels confidence
- Precisely engineered for exact valve actuation, ensuring smooth engine operation and fuel efficiency.
- Timely replacement prevents excessive valve wear, avoiding costly engine damage and downtime.
- Order now to secure authentic Cummins performance parts and extend your equipment’s life cycle.
Details
Product SKU: CUMMINS 3945866
Our knowledgeable support team is always ready to help you select the perfect replacement part tailored to your needs. Reach out anytime through our dedicated help center. We are committed to empowering your repair journey with expert advice and care—wishing you an excellent purchase and a flawlessly restored engine.
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