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
3049553
In stock · ships from Knoxville
This is a genuine Caterpillar heavy-duty stud (part number 3049553) used in diesel engine assemblies, primarily in engine brake and valve actuator groups.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 3 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Caterpillar
Caterpillar
Specific engine models and serial number ranges apply. Verify exact compatibility using Caterpillar SIS or a dealer (e.g., Stowers Machinery).
Part data verified against 2 catalog sources
Different year, make, or config? Get a confirmation against your truck in under a minute.
It has a 1/2-12 thread and a length of 166.5 mm, providing strong clamping force to secure compression brake components or other hardware to the cylinder head or housing. You would replace this stud if threads are damaged, stretched, or during an engine overhaul when you disassemble the brake or actuator groups.
Part Number: 3049553
SHAFT BOLT
Vendor: STOWERS MACHINERY
Dealer: KP Services Crossville
Compatibility, alternatives, and more