
Timing belt Optibelt 300 / H 3860 AFX
- Brand
- OPTIBELT
- Category
- Power transmission
- Subcategory
- Timing belts
- Series
- Alpha Flex
We reply promptly.
Tell us the quantity you need and request a quote by WhatsApp or email.
Can't find the exact model? Tell us the part number or model you need. We'll track it down and quote it, whether or not it appears in our catalog.
Description
OPTIBELT 300 / H 3860 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 300 / H 3860 AFX and any equivalents.
The Optibelt 300 / H 3860 AFX is a timing belt from the Alpha Flex series. It has an H profile and a length of 9804.4 mm. This page is for maintenance, engineering and purchasing professionals who need to identify or replace this exact belt.
The most reliable starting point is the marking on the back of the old belt. Look for the code 300 / H 3860 AFX, along with the Optibelt name and the Alpha Flex series. The profile is H and the length is 9804.4 mm. If the old marking is worn or unreadable, measure the belt and note the profile and length before requesting a quote.
When you contact us, send the full code from the belt or the profile and length. We carry the Optibelt 300 / H 3860 AFX and can confirm it against your application. If the marking is unclear, a photo of the back of the belt helps us identify it correctly. We reply promptly by WhatsApp or email.
Dimensions
- Profile
- H
- Length
- 9804.4mm
Frequently asked questions
- How do I read the marking on the Optibelt 300 / H 3860 AFX?
- The marking on the back of the belt shows the code 300 / H 3860 AFX, the Optibelt brand and the Alpha Flex series. The H indicates the profile and 9804.4 mm is the length. Use these details when requesting a quote.
- What information should I send for a quote on this timing belt?
- Send the full code 300 / H 3860 AFX or the profile H and length 9804.4 mm. If you have the old belt, a clear photo of the marking helps us confirm the correct part.
- Can you help if the marking on my current belt is worn off?
- Yes. If the marking is unreadable, provide the profile and length from your measurement or send a photo. We will help confirm the Optibelt 300 / H 3860 AFX or the correct alternative.

