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.
PAI Industries · Cooling System
880866
In stock · ships from Knoxville
This is a serpentine belt designed for Mack engines, offering an aftermarket replacement for the OEM belt part number 21460409.
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.
Other applications
Other applications
OEM Mack part number 21460409. Always verify belt routing and engine model before purchase.
Part data verified against 2 catalog sources
Different year, make, or config? Get a confirmation against your truck in under a minute.
It transmits power from the crankshaft pulley to accessories like the alternator, water pump, and A/C compressor. Over time, belts wear out—look for cracking, glazing, or squealing—and should be replaced to avoid accessory drive failure.
Part Number: 880866
BELT SERPENTINE /OEM21460409
Vendor: PAI Industries
Dealer: KP Services Crossville
Compatibility, alternatives, and more
