Engines and air compressors pistons
- ABAC
- ACME
- ADLER
- AEC
- AERMACCHI HARLEY-DAVIDSON
- AGRATI - GARELLI
- AGRE
- AJS
- ALFA ROMEO
- ALLGAIER PORSCHE
- ALLIS - CHALMERS
- ALPINA
- ALUP - Kompressoren
- ANSALDO
- ARIEL
- ARONA
- AS Motor - Schefenacker
- ASPERA
- ASPES - ASCO
- ATLAS
- ATLAS COPCO
- AUSTIN
- AUTOBIANCHI
- AVAROS
- AXWALL
- BALKAN
- BAUER KOMPRESSOREN
- BAUTZ
- BCS
- BEDFORD
- BENDIX - Westinghouse
- BENELLI
- BERINI
- BERLIET
- BERNARD
- BERNING
- BETA - MOTOR
- BIANCHI
- BLMC See: AUSTIN, LEYLAND, MORRIS, NUFFIELD
- BMW
- BORGWARD
- BOSCH
- BOTTARINI
- BREDA
- BRITISH LEYLAND See: AUSTIN, LEYLAND, MORRIS, NUFFIELD
- BROWN BOVERI
- BSA
- BULTACO
- BÜSSING
- CADILLAC
- CAPRONI
- CARRARO
- CARRIER
- CASAL
- CATERPILLAR
- CECCATO
- CGE
- CHRIS - CRAFT
- CITROËN
- CLAES - FLANDRIA
- CLAYTON - DEWANDRE
- CLINTON
- CM Motori
- CO.TI.EMME
- COCKERILL OUGREE
- COMPAIR
- CONDOR GUIDETTI
- CONTINENTAL
- COPELAND - DWM
- COUACH
- CREYSSENSAC
- CROCI
- CSEPEL
- CUMMINS
- CZ (Ceske Zavody Motozyklove)
- DAF
- DAIMLER
- DARI
- DAVID BROWN
- DEMAG
- DEMM
- DEMM-LANOVA
- DEUTZ
- DIAMOND - HERCULES
- DKW AUTO-UNION
- DODGE
- DORKOPP
- DORMAN DIESEL Ltd.
- DUCATI
- DUVANT
- EICHER
- ESPHOLlN
- EXPRESS
- FAHR
- FARYMANN (Farny & Weidmann)
- FB MINARELLI
- FB MONDIAL
- FENDT
- FERGUSON
- FIAT
- FICHTEL e SACH
- FINI
- FLOTTMANN
- FN - Fabrique Nationale d'Armes
- FORD
- FORDSON
- GARDNER
- GARELLI
- GERMEX
- GILERA
- GLAS - ISARIA - Goggomobil
- GMC
- GRASSO
- GRAVELY
- GRAZIA
- GUAZZONI
- GUIDETTI
- GUZZI
- GÜLDNER
- HANOMAG
- HARLEY - DAVIDSON
- HATZ
- HEINKEL
- HENSCHEL
- HERCULES
- HILLMAN
- HIRO Motori
- HIRTH
- HMW (Halleiner-Motoren-Werke)
- HOLDER
- HONDA
- HOREX
- HUSQVARNA - HVA
- INDIAN
- INGERSOLL RAND
- INNOCENTI
- INTERNATIONAL HARVESTER
- ISO
- ISOTTA - FRASCHINI
- ITOM
- JAGUAR
- JAVA
- JEEP - WILLY'S
- JENBACH (Jenbacher - Werke)
- JLO - ROCKWELL
- KAELBLE
- KAESER (Kompressoren)
- KAMPER
- KAWASAKI
- KLÖCKNER - H. DEUTZ
- KNORR BREMSE
- KOHLER CO.
- KRAMER
- KREIDLER
- KTM
- LADA
- LAMBORGHINI
- LAMBRETTA
- LANCIA-AUTOBIANCHI
- LAND ROVER
- LANDINI
- LANZ (John - Deere)
- LAVERDA
- LEOBERSDORFER - MASCHINENFABRIK - LMF
- LEYLAND
- LIGIER
- LINDSTROM
- LISTER
- LLOYD
- LOMBARDINI
- M.A.N.
- MAG
- MAGIRUS DEUTZ
- MAICO
- MANEUROP
- MARELLI
- MARELLI CLIMA
- MASSEY FERGUSON - LANDINI
- MATCHLESS
- MATTEI
- MC CULLOCH
- MC LAREN
- MC QUAY
- MEADOWS
- MECATECNO
- MERCEDES BENZ
- MI-VAL
- MONTESA
- MORINI FRANCO - MOTORI
- MORRIS
- MOTO MORINI
- MOTOBECANE
- MOTOM
- MOTOMECCANICA
- MOTORPARTS
- MOTOSACOCHE - MAG
- MV - Meccanica Verghera
- MWM
- MZ - Motorradwerk ZSCHOPAU
- NORTON
- NSU
- NUFFIELD
- OERLIKON
- OM
- ONAN Studebaker Corporation
- OPEL
- ORENSTEIN & KOPPEL
- OSSA
- PALMIERI
- PANHARD
- PARILLA
- PAXMANN RICARDO
- PERKINS
- PETTER
- PEUGEOT
- PIAGGIO
- PLANET
- PLUVIER
- PORSCHE - Diesel
- PUCH
- RAIMONDI
- RC GROUP
- RENAULT
- REX
- ROMANIAN
- ROTAX - BOMBARDIER
- ROVER
- ROYAL - ENFIELD
- ROYAL - NORD HUFKENS
- RUGGERINI
- SAAB
- SACHS
- SAME
- SAMOFA
- SCANIA - VABIS
- SCHEFENACKER
- SCHLÜTER
- SENDLlNG
- SHAMAL
- SIMCA
- SIMSON
- SKODA
- SLANZI
- SOLIFER
- SOLO - KLEINMOTOREN
- SOMECA
- STEYR
- STIHL
- STUDEBAKER
- SUHLER
- SUNBEAM
- SUZUKI
- TERMOMECCANICA
- TOMOS
- TOYOTA
- TRIUMPH
- TURNER
- UNIC
- UTB - UTOS
- VALMET
- VAUXHALL
- VELOCETTE
- VENDER
- VESPA
- VICTORIA
- VILLIERS
- VINCENT / HRD
- VM
- VOLKSWAGEN
- VOLVO
- WABCO
- WACKER
- WESTINGHOUSE
- WISCONSIN
- YAMAGUCHI
- YAMAHA
- ZETOR
- ZÜNDAPP