Donaldson Co. has announced it has received Level 1 Verification from the California Environmental Protection Agency's Air Resources Board (ARB) for its Diesel Oxidation Catalyst muffler and Spiracle crankcase ventilation filter.

The company says the muffler and Spiracle filter combination dramatically reduces diesel engine emissions from the tailpipes and engine crankcase vents of medium and heavy-duty trucks and school buses.
ARB approval enables Donaldson to sell the combination on a retrofit basis to help California vehicle operators meet state pollution control requirements and limit toxic diesel engine emissions. Donaldson's emission reduction systems can be used on the broadest family of engines, with the widest range of operating conditions, of any system granted approval, the company said. And it is the only system addressing both exhaust and crankcase emissions. Donaldson says this gives it a leadership position in an estimated $100 million retrofit opportunity over the next five years.
"We've conducted extensive engine and field tests to confirm the performance and long-term durability of our products. This technology provides reliable, proven emission reductions at a competitive cost. We've created tremendous market interest with this product approach and expect to retrofit a significant number of trucks and buses in the next 12 to 18 months," said Steve Schmeichel, emissions general manager for Donaldson.
Donaldson Co. Inc., headquartered in Minneapolis, is a leading worldwide provider of filtration systems and replacement parts.

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