PRO Program members can receive tiered savings on this line—up to 20% more off for qualifying accounts.
Shipping estimate & delivery timing
Share this product on social media and get an exclusive discount code!
Click any platform below to share this product. After sharing, you'll receive a discount code!
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.
Send a question through Ask a Product Question or the contact form. Our team reviews requests on business days and follows up as quickly as possible.
Exhaust Manifold 3937478 for Cummins 4B3.9 QSB5.9 CM850 Engine
Part Number:
3937478
See Details:
For Cummins 4B3.9 QSB5.9 CM850 Engine
Engine: (Just for reference)
4B3.9, QSF2.8 CM2880 F114, QSB6.7 M CM2250, ISF3.8 CM2220 F103, QSB4.5 CM2150 B108, QSB6.7 CM2250 EC, ISBE CM2150, ISD4.5 CM2150, ISB5.9G CM2180, QSB6.7 CM2350 B130, ISF3.8 CM2220 F116, G5.9, QSB4.5 CM2250 B131, QSB3.9 30 CM550, ISBE CM800, QSB7 CM2880 B117, QSB5.9 30 CM550, ISF2.8 CM2220 F101, QSB6.7 CM2150 B109, G3.9, ISF3.8 CM2220 AN, ISB6.7 CM2250, B4.5 RGT, QSF2.8 CM2880 F108, QSG12 CM2350 G110, ISG12 CM2880 G107, ISG11 CM2880 G108, ISG12 CM2880 G109, QSB6.7 CM2350 B112, B5.9 G, ISB6.7 G CM2180 B118, ISF2.8 CM2220 EC, ISF3.8 CM2220 IAN, ISB (CHRYSLER), ISB6.7 CM2350 B103, B6.7S, QSB7-DM CM850, ISB6.7 CM2350 B101, QSB6.7 CM2880 B116, ISF3.8 CM2350 F109, QSB6.7 CM2350 B105, QSB6.7 CM2250, B5.9 LPG, ISF3.8 CM2220, ISB CM850, B4.5, ISBE4 CM850, ISB/ISD4.5 CM2150 SN, ISB CM2150, QSF3.8 CM2880 F112, QSF2.8 CM2880 F104, QSB5.9 CM2880 B115, QSB6.7 CM2250 B128, ISF2.8 CM2220 ECF2, B4.5S, ISF2.8 CM2220 AN, QSB6.7 CM850, QSB4.5 CM2350 B122, ISF2.8 CM2220 F117, B6.7 G CMOH6.0 B125, G5.9 CM558, 6B5.9, ISF2.8 CM2220 IAN, ISB6.7 2013 DCX CHASSIS CAB, ISB4.5 CM2150, QSB4.5 30 CM550, ISB3.9 CM2220 B107, ISB/ISD6.7 CM2150 SN, ISB6.7 CM2150 SQ, ISB6.7 2010 DCX PICKUP, ISB/ISD6.7 CM2880 B126, B5.9 GAS PLUS CM556, QSF3.8 CM2350 F118, ISF2.8 CM2220, QSB4.5 CM2350 B106, QSB5.9 CM850, ISB CM550, ISG11 CM2880 G106, ISB/ISD6.7 CM2150 B120, F3.8 F102, QSB5.9 44 CM550, QSB4.5 CM2250 EC, QSB4.5 CM850, B5.9 LPG PLUS CM556, QSF2.8 CM2880 F105, B GAS INTERNATIONAL CM556, QSF3.8 CM2350 F119, QSF3.8 CM2350 F107, ISF3.8 CM2220 F110, ISB/ISD4.5 CM2150 B119, ISG12 G CMOH6.0 G111
| original | 3937478 |
Official answers about compatibility, package contents, specifications, installation, shipping, and warranty for Exhaust Manifold 3937478 for Cummins 4B3.9 QSB5.9 CM850 Engine (SKU: ES13793).
No product questions yet. Ask us using the product question form.
Send us your product question and we'll reply by email.
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.
