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Dayco Poly V automotor automotive multi-rib (serpentine) belt · DAYCO 5040310
Poly-V belt Dayco 5040310

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Poly-V belt Dayco 5040310

Manufacturer part number5040310
Brand
DAYCO
Subcategory
Poly-V belts
Series
Poly V automotor
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Description

DAYCO 5040310 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 5040310 and any equivalents.

The Dayco 5040310 is an automotive multi-rib serpentine belt with 4 ribs. It measures 787.4 mm in effective length and 13.72 mm in width, so it matches drives built around that exact profile and length.

The most reliable way to match a serpentine belt is to read the marking on the back of the belt you are removing and compare it against the part number you order. If the old belt shows 5040310, or the alias 4PK0785, this is the belt to quote. Confirm the rib count and the length before ordering, because a belt that is close but not exact will not sit correctly in the pulley grooves.

If the marking is worn off or unreadable, count the ribs on the old belt and measure its effective length. This belt has 4 ribs, a width of 13.72 mm and an effective length of 787.4 mm. Send those figures along with the part number and the application details, and our team will confirm the belt or suggest an equivalent.

Because a serpentine belt wraps several accessories, it is worth inspecting the pulleys, tensioner and idler at the same time. A worn tensioner or a misaligned pulley can shorten the life of a new belt. If you are replacing more than one belt on the same drive, order them together so the set goes on at once.

Dimensions

Grooves
4
Length
787.4mm

Frequently asked questions

How do I confirm the Dayco 5040310 is the belt I need?
Read the marking on the back of the belt being replaced. If it shows 5040310 or 4PK0785, this is the correct belt. If the marking is gone, count the ribs and measure the effective length, then send those figures with your quote request.
What are the key dimensions of this belt?
It has 4 ribs, a width of 13.72 mm and an effective length of 787.4 mm.
What should I send to get a quote?
Send the part number 5040310, or the alias 4PK0785, along with the rib count and length if you are matching a belt with an unreadable marking. Our team will confirm the belt or suggest an equivalent.
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