Poly-V belt Dayco 5040400

DAYCO 5040400 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 5040400 and any equivalents.

The Dayco 5040400 is a 4-rib automotive multi-rib (serpentine) belt with a 1016 mm effective length and a 13.72 mm width. Before you fit a new belt, inspect the drive and sheaves so the replacement runs true. This page covers what to check and what to send for a quote.

Start with the sheaves. Look for wear grooves, nicks or debris in the rib valleys, and confirm the ribs are clean and aligned. A worn or damaged sheave will shorten the life of any new belt, so correct it before installation. Check each accessory pulley for smooth rotation, end play and correct alignment with the rest of the drive.

Then check the tensioner and any idler pulleys: they should spin freely without roughness or noise, and the tensioner should move through its range without binding. Confirm the routing matches the drive layout and that the belt sits fully in the grooves with no rib climbing. The Dayco 5040400 is also listed under the alias 4PK1015.

When you request a quote, send the part number 5040400 or the alias 4PK1015, plus the rib count (4), the effective length (1016 mm) and the width (13.72 mm) so we can confirm the correct belt for your drive.