Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.
Caterpillar · Hardware & Fasteners
4N1650
In stock · ships from Knoxville
This Caterpillar dowel pin (4N1650) is a precision alignment component used to position engine parts accurately during assembly, typically in cylinder blocks, heads, or bearing caps.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 7 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Caterpillar
Caterpillar
Fits numerous Caterpillar engine families and machine models. Always confirm with the parts manual for your specific serial number.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 1 of 1.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It keeps mating surfaces perfectly aligned, preventing movement and reducing wear caused by misalignment. Replace this pin if it's bent, worn, or during an engine rebuild to maintain factory tolerances.
Part Number: 4N1650
DOWEL PIN
Vendor: STOWERS MACHINERY
Dealer: KP Services Crossville
Compatibility, alternatives, and more
