International MaxxForce DT / DT466 B2UV Turbocharger with Actuator | BorgWarner 12639900001 Remanufactured
This is the BorgWarner 12639900001, a B2UV variable geometry turbocharger remanufactured by BorgWarner. Catalogs also call it the BV63. It is the mid mount turbo for the International / Navistar DT466 and MaxxForce DT 7.6L inline six, listed for the 245 hp rating, and it comes as a complete unit with the electronic actuator fitted. It replaces Navistar 1832666C91, 1850493C91, 1876116C91 to C96, 1881102C91 to C93, 1881104C91 to C93 and 5010720R91 to R93. The new version of the same turbo is BorgWarner 12639880001, with the same fitment. Heavy and medium duty turbos are matched by the number on the turbo tag, not by engine model alone.
Low boost, a boost control or actuator fault code, sticking vanes, oil in the charge pipes or shaft play are the usual reasons this unit comes off. Soot in the vanes and a failed actuator give the same low power complaint, so check for exhaust leaks, a split charge air cooler and wiring faults before you condemn the turbo. Find out why the old one failed as well: check the oil feed and drain, the air filter and the intake piping. A refundable core applies, so keep your old turbo complete with its actuator.
Confirm Fitment Before You Order
International used more than one mid mount B2UV on this engine. BorgWarner numbers them 12639880001, 12639880002 and 12639880003 (remanufactured 12639900001, 12639900002 and 12639900003). They look alike and each has its own Navistar numbers. The low mount S300V turbos, such as BorgWarner 479032, are different again. Send us the BorgWarner or Navistar number on your turbo tag and your engine serial number. Call 530-668-0818 and we will confirm the exact match at no charge before anything ships.
Specifications
| Part number | 12639900001 |
| Brand | BorgWarner |
| Condition | Remanufactured |
| Warranty | Manufacturer’s own warranty applies. Call us and we handle the claim. |
| Type | Variable geometry turbocharger, remanufactured by BorgWarner |
| Turbo model | BorgWarner B2UV (BV63) |
| Mounting | Mid mount |
| Actuator | Electronic actuator included, fitted to the turbo |
| Engines | International / Navistar DT466 and MaxxForce DT 7.6L inline six |
| Rating | About 245 hp |
| Model years | 2005 to 2010 in two catalogs. Others list 2005 to 2007 or 2005 to 2009. |
| New twin | BorgWarner 12639880001 |
| How to match | By the BorgWarner or Navistar number on the turbo tag |
| Core charge | Refundable in full when we receive your rebuildable core |
| Shipping weight | 53 lb |
Fits / Applications
- International / Navistar DT466 7.6L with the mid mount B2UV turbo
- International / Navistar MaxxForce DT 7.6L with the mid mount B2UV turbo
- Listed for the 245 hp rating, 2005 to 2010. Catalogs differ on the last year.
- Turbos tagged Navistar 1832666C91, 1850493C91, 1876116C91 to C96, 1881102C91 to C93, 1881104C91 to C93 or 5010720R91 to R93
- Complete turbocharger with the electronic actuator
- BorgWarner 12639880002 and 12639880003 are different turbos with their own Navistar numbers. Match by the number on your turbo tag.
Flush or replace the oil feed line, check the oil drain for restriction, change the engine oil and filter, clean the charge air cooler and piping of oil and debris, and prime the turbo with clean oil before the first start. Use new gaskets and O-rings: sellers list a separate install kit for this turbo, Alliant Power AP0170. Check that the actuator plug and harness are clean and sound before you connect them.
Part Numbers & Cross Reference
BorgWarner remanufactured 12639900001 · BorgWarner new twin 12639880001 · BorgWarner 12639700001 · BorgWarner 175844 · BorgWarner 175845 · BorgWarner 177322 · BorgWarner 177323 · BorgWarner 177533 · BorgWarner 177534 · BorgWarner remanufactured 475844 · BorgWarner remanufactured 475845 · BorgWarner remanufactured 477322 · BorgWarner remanufactured 477323 · BorgWarner remanufactured 477533 · BorgWarner remanufactured 477534 · Navistar 1832666C91 · Navistar 1850493C91 · Navistar 1876116C91 · Navistar 1876116C92 · Navistar 1876116C93 · Navistar 1876116C94 · Navistar 1876116C95 · Navistar 1876116C96 · Navistar 1881102C91 · Navistar 1881102C92 · Navistar 1881102C93 · Navistar 1881104C91 · Navistar 1881104C92 · Navistar 1881104C93 · Navistar 5010720R91 · Navistar 5010720R92 · Navistar 5010720R93
Cross-reference numbers can change with engine serial, build year and emissions tier, so treat this list as a starting point. Send us your engine serial number and we will confirm the exact match against your build before anything ships. That check is free and takes a few minutes.
Frequently Asked Questions
Does the 12639900001 come with the actuator?
Yes. Catalogs list it as a complete B2UV turbocharger with the electronic actuator fitted. Keep your old turbo complete, actuator included, for the core return.
What Navistar numbers does the 12639900001 replace?
Navistar 1832666C91, 1850493C91, 1876116C91 to C96, 1881102C91 to C93, 1881104C91 to C93 and 5010720R91 to R93. It also takes the place of BorgWarner 177533 and 177534.
Is the 12639900001 the same turbo as the 479032?
No. This one is a mid mount B2UV and the 479032 is a low mount S300V. They carry different Navistar numbers, so go by the number on your turbo tag.
Is it new or remanufactured, and is there a core?
It is remanufactured by BorgWarner, and a refundable core applies. The new version of the same turbo is BorgWarner 12639880001.
Related Parts
- Looking for new? International MaxxForce DT / DT466 B2UV Turbocharger with Actuator | BorgWarner 12639880001 New (1881102C91)
Why Buy From Valley Fuel Injection
We are a diesel fuel-injection and turbocharger shop in Woodland, CA, rebuilding pumps, injectors and turbos on our own benches since 1993, not a drop-ship storefront. When you call, you talk to the people who test these units. We verify fitment against your engine serial, VIN or build date before anything ships, so the right part arrives the first time.
UPS to all 50 states, including Alaska and Hawaii. Your rate shows at checkout. A refundable core deposit is added at checkout and refunded in full when we receive your rebuildable core. Questions on fitment? Call 530-668-0818.
Pricing covers the unit itself. Any applicable sales tax and the refundable core charge are additional; shipping is calculated at checkout. Buying tax-exempt? Qualifying diesel repair shops, fleets, farms, and agricultural operations can purchase tax-free. Set up tax-exempt purchasing once and every qualifying order is tax-free going forward.
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