Eight-Rib Serpentine Belt, PAI 880868 (OEM 21556637), Pack of 1
Used In These Kits
This part is included in 1 engine & overhaul kits — find yours below.
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880892Mack MP8 Engines Belt Tensioner Kit In stock - No kits match that search.
Suggested Additional Parts
Commonly sold with this product. These parts are sold separately.
| Brand | PAI Industries |
| Engine Make | Mack |
| Engine Model | MP8 |
Pack of 1.
PAI 880868 is an Eight-Rib Serpentine Belt. One belt, 63.25in effective length and 1.08in width, with eight ribs. PAI lists Mack MP8 applications. Manufacturer-designated parent reference: MACK 21556637.
Manufacturer application categories
MACK MP8 ENGINES (2008). Confirm the complete required part number and application before ordering.
Manufacturer product cross-references
MACK 21556637
Fits:
- MACK MP8 ENGINES
OEM cross-references:
- MACK 21556637
Warranty: 24 months
These catalog references may identify this part or components in an assembly. A listed number alone does not confirm whole-assembly interchange or vehicle fitment. Confirm the required part before ordering.
| Number |
|---|
| MACK 21556637 |
| PAI 880868 |
No cross-reference numbers match that search.
Discovery models are listed below. Confirm the complete application and any ESN/CPL or size restrictions before ordering.
Most PAI parts carry a 2-year unlimited-mileage PAI warranty — 3 years on the High Performance tier, 1 year on Excel by PAI. See Warranty & Returns for full coverage terms, or call a specialist to confirm the exact coverage on this part.
PAI published warranty tiers: High Performance — 3-Year · Genuine PAI — 2-Year · Excel — 1-Year, unlimited mileage. The badge beside the price shows this product's recorded term; when no badge is shown, confirm coverage with a specialist.





