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9L6641 V-Belt Single for CAT 3408, 3408B, 3408C & more
- New V-Belt Single Replacement suitable for Caterpillar Equipment
- Made to USA Specification
Buy with Confidence: All parts are covered by our warranty
4.7
(Site rating)Description for 9L6641 Engine Belt
â–¶Specification for 9L6641 Engine Belt
â–¶Exact Fit Guarantee for 9L6641 Engine Belt
â–¶| Models | 3408, 3408B, 3408C, 3412, 3412C, C15, C18, C18, SR4, C32, C32, C15, C18, TH35-C15I, TH35-E81, 988F II, 834S, 834U, 834B, 3408E, 836 |
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| Dimensions | 25.91x6.30x0.98 |
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I put 2 of the same orders in due to a web page error and shortly after I was contacted by Deb from customer service asking if I meant to place both orders. She was very helpful, the email was very well written and it genuinely made me feel better about the whole experience. She resolved the issue quickly and with there not being much of customer service these days I was very happy so see that is not the case everywhere!!!
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Been buying from them for years and have almost never had an issue. The few times I had a question or something to handle, they have shown amazing customer service. Great product and a great company.
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Great Service!
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He was a great help with ordering and refunding the sales tax,
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Great Customer Service!
Had some difficulties with the website. Contacted customer service. Once I communicated the issues I was having Steven worked through getting my order processed and making sure I got my receipt and all issues resolved. Perfect!
Frequently Asked Questions
What is the Caterpillar V-Belt 9L6641 and what does it drive?
The 9L6641 V-Belt Single is a drive belt used on large Caterpillar engines and equipment to transfer power from the crankshaft to accessories such as the alternator, water pump, air compressor, or fan. It is designed for high-horsepower applications on platforms including the 3408, 3412, C15, C18, C32, and related engines.
How do I know when the 9L6641 V-Belt needs replacement?
Inspect belts at every service interval. Signs of a worn belt include visible cracking on the belt ribs or back surface, fraying or exposed cords on the edges, glazing (shiny surface), squealing noise during operation, accessory underperformance (dim lights, weak charging, overheating), or a belt with 3mm or more of deflection beyond the normal adjustment range.
Which Caterpillar models is the 9L6641 V-Belt compatible with?
The 9L6641 is compatible with Caterpillar 3408, 3408B, 3408C, 3408E, 3412, 3412C, C15, C18, C32, 988F II, 834S, 834U, 834B, 836, TH35-C15I, TH35-E81, and related models. If your model is not listed, check your manual or reach out to Propel Parts for help verifying fitment.
Is this a high-quality aftermarket V-belt?
Yes. The 9L6641 V-Belt from Propel Parts is a premium aftermarket replacement that meets or exceeds OEM specifications for dimensions, flex rating, and power transmission capacity. It is manufactured for the high-load demands of large Caterpillar diesel engine belt drives.
How should I set belt tension on the 9L6641?
Belt tension should be set according to the Caterpillar service manual specification for your specific engine and accessory drive configuration. Use a belt tension gauge or follow the deflection method described in the manual. Overtightening accelerates bearing wear in driven accessories; undertightening causes slipping and heat buildup.
Should I replace all V-belts at the same time on multi-belt drives?
Yes. On engines that use matched belt sets, always replace all belts in a set at the same time. Mixing old and new belts causes uneven load sharing, which overloads the new belt and leads to premature failure. Replacing as a set ensures consistent tension and even power transmission.
Where can I find more V-belt options for Caterpillar engines?
Propel Parts carries a full range of replacement belts for CAT equipment. Browse the complete selection of Caterpillar V-belts and drive belts to find the right belt for your engine model and accessory drive configuration.
This 9L6641 Engine Belt is compatible with the following models:
3408, 3408B, 3408C, 3412, 3412C, C15, C18, C18, SR4, C32, C32, C15, C18, TH35-C15I, TH35-E81, 988F II, 834S, 834U, 834B, 3408E, 836 & more...
Shipping
We know equipment downtime costs money, so fast and reliable shipping is a priority at Propel Parts. Orders placed on weekdays before 3:00 PM ET typically ship the same day, with expedited delivery options available for many locations when time is critical.
We ship across the U.S., Canada, and over 130 countries worldwide, helping customers keep machines running wherever they operate. Available shipping methods and delivery estimates are shown at checkout so you can select the option that best fits your timeline.
Tracking information is emailed within 24–48 hours after your order is processed, giving you full visibility from dispatch to delivery and peace of mind that your parts are on the way.
Easy Returns
Our refund policy is simple. We offer a 30-day, no-hassle return policy, and we make every effort to provide the best service and highest-quality parts possible. If you’re not fully satisfied with your purchase, you may return it within 30 days for a refund. Full details are available on our Returns Policy page.
Warranty
Buy with confidence. All parts from Propel Parts are covered against material or manufacturer defects for 12 months from the original invoice date. We stand behind every part we sell, so you can count on reliable performance and dependable support. Full details are available on our Warranty Policy page.
1 YEAR UNLIMITED WARRANTY
ORDER BY 3PM EST. EXCL. WEEKEND
NO CORE OR EXCHANGE CHARGES
EASY RETURNS & FAST REFUNDS
