Poly-V belt Dayco 5120640
- Brand
- DAYCO
- Category
- Power transmission
- Subcategory
- Poly-V belts
- Series
- Poly V automotor
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Description
DAYCO 5120640 belongs to poly-V belt, part of our Power transmission range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 5120640 and any equivalents.
The Dayco 5120640 is a 12-rib automotive serpentine belt with an effective length of 1625.09 mm and a width of 42.16 mm. It is also referenced as 12PK1625. This page covers where this type of belt is used and how to confirm it fits your drive.
Serpentine belts wrap the accessory drive, running the alternator, power steering pump, water pump and air conditioning compressor from a single multi-rib band. Because one belt drives several accessories, a worn or damaged rib can affect more than one system at once. Confirm the fit by matching the rib count and the effective length to the belt you are replacing, then check that the routing matches the drive layout.
For this Dayco belt, the rib count is 12 and the effective length is 1625.09 mm, with a width of 42.16 mm. The effective length is measured around the belt's running path, so it is the figure to compare against the marking on your old belt or the drive specification. If the old belt is too worn to read, measure the routing path or send us the part number and we will help confirm the right belt or suggest an equivalent.
Inspect the drive while the belt is off. Check the ribs for cracks, missing sections or glazing, and check the pulleys for misalignment, wobble or grooves worn into the surface. A belt that squeals or shreds often points to a pulley or tensioner problem rather than the belt itself. Replacing the belt without correcting the cause usually leads to a repeat failure.
Dimensions
- Grooves
- 12
- Length
- 1625.09mm
Frequently asked questions
- How do I confirm the Dayco 5120640 fits my drive?
- Match the rib count and effective length to the belt you are replacing. This belt has 12 ribs and an effective length of 1625.09 mm, with a width of 42.16 mm. If you are unsure, send the part number or the marking on your old belt and our team will help confirm the right belt or suggest an equivalent.
- What does the 12PK1625 reference mean?
- 12PK1625 is an alias for the Dayco 5120640. Use either number when requesting a quote.
- What should I check on the drive before installing a new belt?
- Check the pulleys for misalignment, wobble or worn grooves, and check the tensioner for correct operation. Rib damage, glazing or squealing usually points to a pulley or tensioner issue, so correcting that first helps the new belt last.