New EPA draft guidance carries significant implications on DEF market

Sarah Jin - 10 August 2011

The Environmental Protection Agency (EPA) has produced a draft guidance document on July 7th with intentions to modify its certification program for NOx emission control reducing agents for SCR-equipped trucks.

The new EPA draft guidance proposes to tighten the existing regulations in terms of the functioning of Low-DEF warning systems and when inducement kicks in. This aims to prevent instances where truck owners run out of DEF and violate emissions regulations by failing to refill the tank.

The new draft guidance will carry indirect implications for the DEF market, calling for an increase in stockists which offer DEF. The vice president of Government Affairs at Navistar Inc., Patrick Charbonneau, commented on the company's concerns regarding aftermarket sales of SCR trucks. He argues that the draft guidance will allow truck drivers to continue to drive "dry" DEF tanks, because DEF refills "are both expensive and inconvenient for the customers of SCR engine makers - assuming DEF is even available."

Other OEM producers such as Cummins are also hoping for an upsurge of DEF supply by auto parts retailers. At the current time, only 30% of retailers supplying parts for light-, medium- and heavy-duty diesel vehicles also offer DEF.

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