Cummins WASHER 3924653
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
The Cummins 3924653 Washer is a genuine OEM plain washer used in selected Cummins engine applications. Current Cummins references identify this part specifically as a plain washer and note primary use on Tier 3 5.9L ISB/QSB engines, making it a correct factory replacement for the intended fastener stack where proper load distribution and secure assembly fit matter.
Key Features
- Genuine Cummins OEM part
- Part number: 3924653
- Identified by Cummins as a plain washer
- Used primarily on selected Tier 3 5.9L ISB/QSB engine applications
- Factory replacement hardware for the correct Cummins assembly point
Engine Compatibility
Commonly associated with selected Cummins Tier 3 5.9 liter ISB and QSB engine applications. Exact fitment can still vary by engine arrangement, build configuration, and assembly location, so compatibility should be confirmed against the correct parts catalog entry for the specific engine being serviced.
Serial Number Fitment Notice
Fitment should be confirmed by engine serial number (ESN) before ordering. Cummins directs users to identify the correct part through its parts catalog and QuickServe resources by ESN for accurate application matching.
When This Part Needs Replacement
Replace this washer when the original hardware is worn, deformed, corroded, damaged during disassembly, or no longer suitable for secure reassembly in the intended location.
Installation Notes
Confirm the exact application before installation and compare the new washer to the original hardware during service. Inspect the related bolt, mating surface, and surrounding hardware so the replacement is installed into a clean, properly supported assembly.
Alternate/Superseded Part Numbers
Current references identify this item as 3924653. Additional supersession or cross-reference details should be confirmed by engine serial number before interchangeability is assumed.
Parts Desk Insight
With plain washers, the easy mistake is treating them as generic hardware. On an engine, the right thickness and fit still matter, so matching by part number and engine serial number is the safer move.
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.