Identifying the Alternator & Serpentine Belt on the QSB 5.9
Sale!
Cummins Serpentine Belt for QSB 5.9 (post January 2008) 21/22 SI Alternator CPN 4981117 (BROWN)
Original price was: $90.00.$76.50Current price is: $76.50.
Shipping Weight | 1 lbs |
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Shipping Dimensions | 8 × 6 × 1 in |
In stock
Description
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.