
Timing belt Optibelt 25 AT5K6 / 8600 AFX
- Brand
- OPTIBELT
- Category
- Power transmission
- Subcategory
- Timing belts
- Series
- Alpha Flex
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Tell us the quantity you need and request a quote by WhatsApp or email.
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Description
OPTIBELT 25 AT5K6 / 8600 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 25 AT5K6 / 8600 AFX and any equivalents.
The marking on the back of a worn timing belt is often the fastest way to identify a replacement. This page covers the Optibelt 25 AT5K6 / 8600 AFX from the Alpha Flex series, an AT5 profile belt with an 8600 mm length and a 5 mm pitch. Read the old belt before you order, then send us the number.
Start with the back of the belt. Timing belt markings are printed or molded along the outer surface, and on a dirty or worn belt they can be faint. Wipe the surface, work along the full length, and photograph each section rather than only the first clear block of text. The code you are looking for here is 25 AT5K6 / 8600 AFX, and the profile and length are what confirm the match.
The profile is AT5 and the length is 8600 mm, with a 5 mm pitch. Those three values describe the belt's tooth form and its running length, and they are the ones to check against the belt on the drive. If the marking is worn away entirely, measure the length and count the teeth so we can work back to the right profile.
When you send the request, include the full code from the back of the belt, the profile and length you measured, and a photo of the marking if it is still readable. We carry Optibelt and can confirm the belt or suggest an equivalent from the same profile and length.
Dimensions
- Profile
- AT5
- Pitch
- 5mm
- Length
- 8600mm
Frequently asked questions
- Where is the part number on this belt?
- It is marked on the back of the belt, on the surface opposite the teeth. The code to look for is 25 AT5K6 / 8600 AFX. Clean the surface first, since dust and wear can make the marking hard to read.
- What if the marking has worn off?
- Measure the belt length and the tooth pitch, and note the profile if the teeth are still clear. This belt is AT5 profile, 8600 mm long, with a 5 mm pitch. Send those measurements and we can confirm the match.
- How do I request a quote?
- Send the part number 25 AT5K6 / 8600 AFX by WhatsApp or email, along with the profile and length if you have them. A photo of the marking on the old belt helps us confirm the right belt the first time.

