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.

Post Onsite · Exhaust
BM453
In stock · ships from Knoxville
This is a 3-inch black malleable iron 45-degree elbow with female NPT threads on both ends.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 1 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Universal fit
Typically threaded into 3-inch NPT black pipe in truck air brake, air suspension, fuel, or coolant plumbing systems. Does not include specific vehicle makes/models.
Part data verified against 2 catalog sources
Numbers this part supersedes or interchanges with. Showing 3 of 3.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It's designed to change the direction of rigid pipe runs by 45°, commonly used on heavy-duty truck air, coolant, or low-pressure fluid lines. You'd replace it when there's thread damage, rust-through pinhole leaks, or when re-routing plumbing. The fitting is rated for air, water, oil, natural gas, and saturated steam up to 150 psi (300 psi cold non-shock).
Part Number: BM453
3' BLACK PIPE, 45*, THREAD
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside exhaust