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Built to support repair shops, fleets, and equipment owners with dependable parts sourcing and responsive service.
Qualifying new parts include 1-year coverage. Review the Warranty Policy section for coverage details, claim steps, and exclusions.
Eligible orders may qualify for returns within 90 days. See the Easy Return Policy section for conditions and next steps.
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| Model Number | 320C, 320C FM, 320D LRR, 320D RR, 321C, 320D, 320D FM, 320D GC, 320D L, 323D L, 320C L, 323D LN, 323D SA, 321D LCR, 320D FM RR, 320D LN |
| Engine Number | 3066 |
| Compatible Model Brand | For CAT |
| Compatible Engine Brand | For CAT |
| original | CA3054908, 305-4908, 3054908 |
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Official answers about compatibility, package contents, specifications, installation, shipping, and warranty for Belt Tensioner 305-4908 for Caterpillar CAT Engine 3066 Excavator 320C 320D 321C 321D LCR 323D L 323D LN 323D SA (SKU: ESY35729).
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Every new aftermarket part from us includes a 1-year warranty. Full terms, coverage, and how to make a claim: Warranty Assistance.
We ship to customers around the world. Orders are sent with our standard courier service—trackable, dependable, and easy to work with. On this product page, use Get Estimate under the price to see shipping cost and estimated delivery for your location. For destinations, rules, and full details, read our Shipping Policy Details.
We want you to be confident in your order. If you are not satisfied, you may qualify for a return or refund within 90 days, subject to conditions. See our Easy Return Policy for eligibility, steps, and exceptions.
