Vehicle recall 11V518000 · October 18, 2011

Champion CTS and M1235

The v-band clamp assembly, part numbers Q187684, Q187685, and Q187686, used to connect the inlet and outlet cone sections to the diesel oxidation catalyst (doc)/diesel…

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

Summary: Champion bus (champion) is recalling certain model year 2011 cts and M1235 trucks manufactured from March 9, 2011, through June 29, 2011, equipped with a cummins isx or isl diesel engine. The v-band clamp assembly, part numbers Q187684, Q187685, and Q187686, used to connect the inlet and outlet cone sections to the diesel oxidation catalyst (doc)/diesel particulate filter (DPF) include a t-bolt which can fracture and fail when subjected to stress or load. A fracture or failure of the t-bolt may cause the clamp to loosen and the inlet or outlet sections attached to the doc/DPF housing to disconnect.
Consequence: If the inlet or outlet sections disconnect, hot exhaust gases can vent prior to exiting the tailpipe, creating the risk of combustion and a fire. If both clamps fail, there is a risk in some applications that the doc/DPF housing may detach completely, creating a road hazard.
Remedy: Champion is working with cummins to identify and notify owners of the recall campaign. Repairs will be performed by authorized cummins dealers free of charge. The safety recall began October 10, 2011. Owners may contact cummins at 1-812-377-5000.
Notes: The NHTSA number assigned to the cummins' recall is 11E-031.OWNERS may also contact the national highway traffic safety administration's vehicle safety hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to http://www.safercar.gov.

Recall details

NHTSA campaign: 11V518000
Reported to NHTSA: October 18, 2011
Filed by: CHAMPION BUS, INC.
Owner notification: October 10, 2011
Vehicles potentially affected: 3
Initiated by: the manufacturer
Components: Engine and engine cooling

Recall 11V518000 on nhtsa.gov, with the manufacturer’s documents

Vehicles covered

As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.

Champion CTS (2011): 2011
Champion M1235 (2011): 2011

Has your Champion been repaired?

Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.

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NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Champion dealer can also check your VIN. Recall repairs are free.