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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 | R140W-7, R140LC-9S, R140W-9S, R140LC-7, R140W7, R140LC9S, R140W9S |
| Engine Number | 4BT, 4B3.9, B4.5, B5.9 GAS PLUS CM556, ISB CM2150, QSB3.9 30 CM550, ISB6.7 CM2250, ISBe4 CM850, ISL9 CM2350 L101, QSB6.7 CM850(CM2850), QSL9 CM850(CM2850) |
| Compatible Model Brand | For HYUNDAI |
| Compatible Engine Brand | For CUMMINS |
| original | 3920611, 3966448, 3966447 |
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Official answers about compatibility, package contents, specifications, installation, shipping, and warranty for Complete Cylinder Head 3966448 for Cummins Engine 4BT 4B3.9 B4.5 B5.9 ISB ISB6.7 ISBE4 ISL9 QSB3.9 QSB6.7 QSL9 (SKU: ESY14060).
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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.
