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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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Crankshaft Gear 3929027 3901258 for Cummins 4B 6B 4BT 6BT 4BTA 6BTA 3.9L 5.9L
Part Number:
3929027, 3901258
Applications:
Fits Cummins 4B, 6B, 4BT, 6BT, 4BTA, 6BTA, 3.9L, 5.9L
Fits 1989 To 2002 12V 24V Cummins Engine
Official answers about compatibility, package contents, specifications, installation, shipping, and warranty for Crankshaft Gear 3929027 3901258 for Cummins 4B 6B 4BT 6BT 4BTA 6BTA 3.9L 5.9L (SKU: ES12133).
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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.
