Identifying the Alternator & Serpentine Belt on the QSB 5.9
Cummins Serpentine Belt for QSB 5.9 (post January 2008) 21/22 SI Alternator CPN 4981117 (BROWN)
|Shipping Dimensions||8 × 6 × 1 in|
Which serpentine belt do I need on my Cummins Marine QSB 5.9 engine?
Engines with 19SI alternators use the ORANGE BELT.
Engines with 21/22SI or 24SI alternators use the BROWN BELT.
Identifying the Alternator on the QSB 5.9
1 review for Cummins Serpentine Belt for QSB 5.9 (post January 2008) 21/22 SI Alternator CPN 4981117 (BROWN)
Only logged in customers who have purchased this product may leave a review.
Robert McManus (verified owner) –
prior belt lasted as expected and finished service still in good condition.