Producers
- M2 Filter
- Magneti Marelli
- Magnum Technology
- Mahle Original
- Maine Coon
- Majorsell
- MAK Italy
- MAK Ukraine
- Mammooth
- MAN
- Mando
- Mann-Filter
- Mannol
- Mapa
- Mapco
- MarkBest
- Markon
- Mar-Mot
- Maruichi 1-56
- Maserati
- Massey Ferguson
- Masterkit
- Master-Sport
- MasterTool
- Masuma
- Matomi
- Maxgear
- Maxis Parts
- Maxtech
- Maxtrac
- Maxus
- MAY
- MAZ
- Mazda
- MCB
- Mcquay-Norris
- MDR
- Meat&Doria (Hoffer)
- MecaFilter
- Mecarm
- Mec Diesel
- Mega Kardes Elektrik
- Mega Poland
- Meha
- Meiwa
- Melett
- Mercedes-Benz
- Mercury
- Meritor/Ror
- Metalcaucho
- Metelli
- Metgum
- Metzger
- Mevotech
- Meyle
- M-Filter
- MFilter
- MFT
- MGA
- MG Rover
- Micro
- Mikalor
- Mikoda
- Miles
- Milotec
- Mingzhen
- Mintex
- Mintye
- Miraglio
- Mirka
- Misfat
- Mitka
- Mitsuba
- Mitsubishi
- Mitsuboshi
- MK-Filter
- Mobil
- Mobiletron
- Molder
- Molder Tools
- Monroe
- Moog
- Mopart
- Morse TEC
- Motaquip
- Motip
- Motor7
- Motorad
- Motorcraft
- MotorDetal
- Motorherz
- Mototechnika
- Motrio
- Motul
- Motus
- MPM
- MSG
- M-Tech
- MTF Light
- MTS
- MTZ
- Mubea
- Muller Filter
- Multi Air
- Musashi
- MX