This is a genuine Cummins / Bosch Pump Injection Bosch 3963965 (CN3963965) from our surplus inventory of heavy-equipment parts in San Antonio, Texas. It is unused new old stock (NOS) — original OEM manufacture, not aftermarket reproduction.
Verify fitment with your machine's serial number before ordering — we're happy to help cross-reference. Call (210) 942-3553 or send a quote request with your model and serial number.
We ship nationwide and to US freight forwarders for export buyers. Volume and fleet inquiries welcome.