2014–2015 Oshkosh S-Series Recall: Affected concrete mixers are powered with compressed natural gas (CNG) and…

NHTSA campaign 15V532000 · Fuel System, Other · filed Aug 20, 2015 · verified Jul 30, 2026

Units reported

Manufacturer

Oshkosh Corporation

Risk

Fire

Owner letters

Mailing began Sep 25, 2015

The defect

Oshkosh Corporation (Oshkosh) is recalling certain model year 2014-2015 S-Series concrete mixers manufactured July 16, 2014, to June 30, 2015. The affected concrete mixers are powered with compressed natural gas (CNG) and are equipped with pressure relief devices (PRD) that may not function as designed, failing to vent a buildup of pressure, such as could occur if the CNG tank was exposed to fire.

The risk

If the PRD does not activate in the event of a buildup of pressure, the CNG tank may explode, increasing the risk of fire and injury.

Check whether your specific vehicle is affected

Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.

Check VIN on NHTSA →

The fix — what to do

Oshkosh will notify owners, and dealers will inspect and replace the PRD's, as necessary, free of charge. The recall began on September 25, 2015. Owners may contact Oshkosh customer service at 1-888-686-7278. Oshkosh's number for this recall is Emcara 15E-059.

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

Affected vehicles

Make	Model	Model years
Oshkosh	S-Series	2014, 2015

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Source: NHTSA recall database, campaign 15V532000 (manufacturer number Emcara: 15E-059). Data last verified Jul 30, 2026.