Poly-V belt Dayco 5040478

DAYCO 5040478 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 5040478 and any equivalents.

The Dayco 5040478 is a 4-rib automotive serpentine belt with an effective length of 1212.85 mm and a width of 13.72 mm. It is used on accessory drives where a single multi-rib belt turns components such as the alternator, water pump or power steering pump. Confirm fit by matching the rib count, effective length and width to the belt you are replacing.

Because serpentine belts wrap several pulleys, the rib count and effective length must match the original. This belt has 4 ribs and a width of 13.72 mm, so it seats correctly in a 4-rib pulley set. Check the old belt for rib count and any readable length marking, and compare it to 1212.85 mm.

Inspect the drive before ordering: look for cracked ribs, glazing, missing chunks or frayed edges, and check that the tensioner and idler pulleys spin freely. If the belt has been running with a worn tensioner, the replacement may not hold proper tension.

To request a quote, send the part number 5040478, or the alias 4PK1215, by WhatsApp or email. Include the rib count, the effective length and the width if you are unsure, and the team can confirm the right belt or suggest an equivalent.