Cummins B6.7O 200
Built: 2026 · Series: B6.7O
More machines from model year 2026
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Cummins B6.7 — the 6.7-Litre Inline-Six for Medium-Duty Trucks and Buses
The Cummins B6.7 is an inline six-cylinder diesel of 6.7 litres (6,690 cc) that replaced the earlier ISB6.7 designation; the 2021 update brought extended service intervals and a maintenance-free crankcase ventilation filter. A variable-geometry turbocharger (VGT) and high-pressure common-rail injection are core features, with output ranging roughly from 136 to 268 kW (183–360 hp) and torque up to about 1,100 N·m depending on the rating.
Read on 3 more paragraphs
The B6.7 continues Cummins' long-running B-series lineage and superseded the smaller 5.9-litre ISB; the sources reviewed give no verifiable production dates beyond the 2021 revision. As with most current heavy-duty diesel engines in this class, it meets current emission standards through a combination of exhaust gas recirculation (EGR), a diesel particulate filter (DPF) and selective catalytic reduction (SCR) using AdBlue.
Typical duty includes medium-duty truck and bus chassis, school buses (long the default option across North America), transit buses, and light-to-medium commercial vehicles; variants on record include B6.7O 300, 260, 220 and 200, plus the "EV" ratings 300 EV, 220 EV and 200 EV.
Trade sources point to the VGT actuator mechanism as a known wear point — its degradation can disable the exhaust-brake function — so a functional check of the exhaust brake is worthwhile on used units, in addition to the usual review of oil and filter service intervals.
Sources: SpecCodex register, model data: Cummins B6.7, Cummins
Technical data
Engine
| Engine code | BG4correct |
|---|---|
| Engine family | TCEXE0408BEAcorrect |
| Engine families | TCEXE0408BEAcorrect |
| Fuel | petrolcorrect |
| Rated output | 149.1 kW (= 200 hp)correct |
| Rated speed | 3,200 rpmcorrect |
| Maximum torque | 600 ft·lbfcorrect |
| Speed at max. torque | 1,550 rpmcorrect |
| Displacement | 6,700 cm³correct |
| Displacement | 6.7 lcorrect |
| Operating cycle | petrol enginecorrect |
| Injection | direct injectioncorrect |
| Aspiration | turbochargedcorrect |
Origin and approval
| Version | BG4correct |
|---|---|
| Built from | 2026correct |
| Built to | 2026correct |
| Model year from | 2026correct |
| Model year to | 2026correct |
| Sales region | USA certificationcorrect |
Other data
| Application | Vocationalcorrect |
|---|
Frequently asked questions
How much power does the Cummins B6.7O 200 have?
The Cummins B6.7O 200 delivers 149 kW.
What engine does the Cummins B6.7O 200 have?
6,700 cm³ displacement, Gasoline.
When was the Cummins B6.7O 200 built?
Production years: 2026.
What to check before buying
- Match the data plate against the order: frame size, mounting and rating have to agree.
- For used units, ask about winding condition and bearing play.
- Ask about parts availability for this series — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 23 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Other models in this series
Sources: US EPA — engine certification data (retrieved August 2026) · How we check the data
Diesel engine in 3D section
Turn the model, look inside and click an assembly — each one is explained.
Parts for this engine (40)
Manufacturer part numbers from the official EPA documentation. No prices or availability — those come from the supplier.
| Teilenummer | Bezeichnung | Hersteller |
|---|---|---|
| 5491730 | Cam Position Sensor | Cummins |
| 5698454 | Compressor Inlet Combo Sensor;Compressor Inlet Temp/Pres Sensor (TBAP) | Cummins |
| 4921489 | Compressor Outlet Pressure Sensor;CAC Out Pressure Sensor | Cummins |
| 4954905 | Coolant Temperature Sensor;Coolant Temp Sensor;Coolant Temperature Sensor;Engine Out NOx Sensor 2;Coolant Temperature Sensor;Oil Temperature Sensor;Oil Temperature Sensor;Coolant Temperature Sensor;Coolant temp sensor | Cummins |
| 4383999 | Crank Position Sensor | Cummins |
| 5698568 | Crankcase Pressure Sensor | Cummins |
| 6455623 | Crankcase Pressure Sensor | Cummins |
| 6385202 | EVAP Purge Pump | Cummins |
| 5716576 | EVAP Purge Valve | Cummins |
| 6428684 | Engine Control Module | Cummins |
| 6584218 | Engine Control Module | Cummins |
| 6665270 | Engine Control Module | Cummins |
| 5491909 | Exhaust Pressure Sensor;EMP Sensor;Exhaust Manifold sensor | Cummins |
| 6432584 | Fuel Injection Pump | Cummins |
| 6583608 | Fuel Injection Pump | Cummins |
| 6451981 | Fuel Injector | Cummins |
| 6420528 | Fuel Pressure Sensor | Cummins |
| 5491692 | Intake Manifold Temperature | Cummins |
| 2897654 | Knock Sensor;Knock sensor | Cummins |
| 6441429 | Narrowband Oxygen Sensor | Cummins |
| 5491435 | Oil Pressure Sensor;PCN Oil Pressure Sensor;PCN Oil Pressure Sensor;Oil Pressure Sensor | Cummins |
| 5748909 | Three-Way Catalyst | Cummins |
| 6423765 | Three-Way Catalyst | Cummins |
| 6525581 | Three-Way Catalyst | Cummins |
| 6408671 | Turbocharger | Cummins |
| 6408672 | Turbocharger | Cummins |
| 6408673 | Turbocharger | Cummins |
| 6408674 | Turbocharger | Cummins |
| 6408675 | Turbocharger | Cummins |
| 6532213 | Turbocharger | Cummins |
| 6532214 | Turbocharger | Cummins |
| 6532215 | Turbocharger | Cummins |
| 6532218 | Turbocharger | Cummins |
| 6532220 | Turbocharger | Cummins |
| 6636504 | Turbocharger | Cummins |
| 6636505 | Turbocharger | Cummins |
| 6636506 | Turbocharger | Cummins |
| 6636512 | Turbocharger | Cummins |
| 6636513 | Turbocharger | Cummins |
| 6398090 | Wideband Oxygen Sensor | Cummins |
Quelle: EPA HD Engines 2015–Present
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