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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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Belt Tensioner Pulley 3978022 3922900 for Cummins 6CT 6BT Engine
Part Number:
3978022,3922900
Applications:
Fits Cummins
Engine:
Fits Cummins Engine:
B3.9L, 4BT, 6BT, 5.9L, 4BT, 4BTA, 6B, 6BTA, 8.3L, ISB, ISC
Case:6T590, 6T830, 4T390
Fit for Freightliner FL80 MT35 MT45 MT55
1997-2004 MT35 3.9L L4 DIESEL Turbocharged
1993 FL70 5.9L L6 DIESEL Turbocharged
1997 FL70 8.3L L6 DIESEL Turbocharged
1997 FL50 8.3L L6 DIESEL Turbocharged
1997 FL60 8.3L L6 DIESEL Turbocharged
1997 FL80 8.3L L6 DIESEL Turbocharged
PETERBILT:320
Blue Bird:TC2000
Case:1150, 450, 9010, 9020, 9030
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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.
