Donaldson Company
Exhaust systems—Air induction systems—Diesel emission control—OE and retrofit mufflers
Firwin Corporation
Removable thermal insulation for engines, exhaust systems, catalytic converters and particulate filters
HUSS Group
Mufflers—Complete exhaust systems
Universal Acoustic & Emission Technologies, Inc.
Exhaust systems and silencers for engines in power generation, marine and oil & gas markets
- Advance Thermal Corporation
- Advanced Thermal Products
- Alvern Marine Exhaust
- Bosal International N.V.
- Calsonic North America
- Clamps, Inc.
- Colpro Engineering Pty Ltd
- Components And Accessories Services (India)
- Cummins Filtration
- Custom Marine Exhaust and Insulation (CMI)
- DB & Co (Belgium)
- Deangelo Marine Exhaust
- Discom B.V. (The Netherlands)
- DME Inc.
- DNA Performance Mufflers
- Donaldson Company
- Dongwon Precision Ind. Co. (Korea)
- E.I.Williams Silencers
- Eberspächer GbmH
- Eco Sound, Inc.
- Engineered Aeroacoustics
- Falken Silencers Ltd.
- Faurecia
- Ferrita Sweden
- Firwin Corporation
- Fit Tight Covers
- Flexatube Industries
- Grand Rock Company
- Green Water Heat Exchangers
- GT Exhaust Systems
- Harco Manufacturing Co.
- Jacobs Vehicle Systems
- Leistritz AG
- Marine Exhaust Systems of Alabama
- Maxim Silencers
- McNovick
- Meng Header Australia
- Metcalf Marine Exhaust
- Nederman, Inc.
- Nelson Industries
- Ottawa Products Co.
- Parker Fabrication
- Saveguard (UK) Ltd.
- Silentor AS
- Silex Inc.
- ShangHai BaiXing/JiaWen Performance Industries
- Sound Waves Insulation
- Stoddard Silencers Canada
- Temptec
- Tenneco Automotive
- TIGHITCO, Inc.
- Torca Products
- Universal Acoustic & Emission Technologies
- USA Marine Exhaust Inc.
- VANEC
- Victorian Marine Technology
- Walker Exhaust Systems