DAYCO Serpentine Belt: Serpentine Belt, K Belt Trade Size, V-Ribbed Belt
The DAYCO Serpentine Belt is a 12PK Series Micro-Ribbed V-Belt with a K Belt Trade Size and V-Ribbed design. It has an effective length of 97 3/4 in, an Industry Number of 12PK2485, and a Manufacturer Part Number of…
SKU 3G-OTH-496813
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Product Description
The DAYCO Serpentine Belt is a 12PK Series Micro-Ribbed V-Belt with a K Belt Trade Size and V-Ribbed design. It has an effective length of 97 3/4 in, an Industry Number of 12PK2485, and a Manufacturer Part Number of 5120978. The belt features aramid reinforcing cord material for strength.
Frequently Asked Questions
What is a DAYCO serpentine belt used for?
A DAYCO serpentine belt drives engine accessories like the alternator, water pump, and air conditioning compressor. Its V-ribbed design and aramid cord provide high strength and flexibility for demanding industrial and automotive applications.
What are the specifications of the DAYCO 5120978 serpentine belt?
The DAYCO 5120978 is a 12PK Series Micro-Ribbed V-Belt with a K Belt Trade Size, V-Ribbed design, and effective length of 97 3/4 in. It has Industry Number 12PK2485 and features aramid reinforcing cord material for durability.
Where to buy a DAYCO serpentine belt worldwide?
3G Electric supplies the DAYCO 5120978 serpentine belt worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this belt to your facility, ensuring you get the right part for your application.
How to select the correct DAYCO serpentine belt?
To select the correct DAYCO serpentine belt, verify the effective length (97 3/4 in), rib count (12PK), and trade size (K Belt). Check your equipment manual for the required Industry Number (12PK2485) and confirm aramid cord material for high-load applications.
Used in
Common applications for DAYCODAYCO Products
3G Electric supplies DAYCO 12pk series micro-ribbed v-belts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









