
Timing belt Optibelt 16 AT20 / 4000 AFX
- Brand
- OPTIBELT
- Category
- Power transmission
- Subcategory
- Timing belts
- Series
- Alpha Flex
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Description
OPTIBELT 16 AT20 / 4000 AFX belongs to timing 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 16 AT20 / 4000 AFX and any equivalents.
When a timing belt needs replacement, the most reliable starting point is the marking on the back of the old belt. This page covers the Optibelt 16 AT20 / 4000 AFX from the Alpha Flex series, a timing belt with an AT20 profile, a 4000 mm length, and a 20 mm pitch. Use those figures to confirm you are specifying the same belt.
The AT20 profile and 4000 mm length identify the belt's cross-section and circumference. The 20 mm pitch is the distance from one tooth center to the next. Before ordering, read the full marking on your existing belt and compare every character with the code above. If the old belt is worn or the print is faint, check the drive documentation or measure the belt to confirm the profile and length.
This belt is part of the Optibelt Alpha Flex series. For a quote, send the complete part number 16 AT20 / 4000 AFX by WhatsApp or email. If your marking differs slightly, include a photo of the belt back and any drive details so we can help confirm the correct belt or suggest an equivalent.
Dimensions
- Profile
- AT20
- Pitch
- 20mm
- Length
- 4000mm
Frequently asked questions
- How do I read the marking on my old timing belt?
- Look for the printed code on the back of the belt. It typically includes the profile, length, and pitch. For this belt, the marking should match 16 AT20 / 4000 AFX. Note every character exactly as printed.
- What do the profile and length mean on this belt?
- The profile is AT20, which defines the tooth shape. The length is 4000 mm, the belt's circumferential length. The pitch is 20 mm, the distance between tooth centers.
- What information should I send to request a quote?
- Send the part number 16 AT20 / 4000 AFX, the quantity you need, and any details from the old belt or drive. If the marking is unclear, a photo helps us confirm the right belt or suggest an equivalent.

