Four Stroke Engines

Auxiliary power and generator engines with superior fuel economy

Home/Engine Parts/Four Stroke
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12
Engine Brands
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212+
Engine Models
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11
Component Types
Four Stroke Engine
UTS Marine Watermark

Engine Components

  • Cylinders Liners
  • Piston Crowns
  • Piston Skirts
  • Cylinder Heads
  • Exhaust Valve Spindles
  • Valve Seats
  • Valve Cages
  • Plungers
  • Fuel Pumps
  • Bearings
  • Piston Rings

Looking for two-stroke engine parts?

View Two-Stroke Parts

Four-Stroke Marine Diesel Engines

Four-stroke marine diesel engines are commonly used for auxiliary power generation, smaller main engines, and generator sets. These engines offer better fuel economy at lower loads and are easier to maintain. We maintain extensive inventory of genuine and OEM parts for all major four-stroke engine brands.

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Yanmar

Japanese precision engineering for auxiliary power

23
Models
Yanmar EY18
Yanmar EY22
Yanmar EY26
Yanmar N165
Yanmar N18
Yanmar N21
Yanmar N260
Yanmar N280
Yanmar N330
Yanmar T220
Yanmar T240
Yanmar T260
Yanmar M200
Yanmar M220
Yanmar S165
Yanmar S185
Yanmar HL
Yanmar RL
Yanmar ML
Yanmar UL
Yanmar GL
Yanmar KFL
Yanmar SC60N
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Daihatsu

Reliable four-stroke engines for marine applications

22
Models
Daihatsu DC32
Daihatsu DC17A
Daihatsu DC17
Daihatsu DK20
Daihatsu DK26
Daihatsu DK28
Daihatsu DK32
Daihatsu DL19
Daihatsu DL20
Daihatsu DL22
Daihatsu DL24
Daihatsu DL26
Daihatsu DL28
Daihatsu DS18
Daihatsu DS22
Daihatsu DS26
Daihatsu DS26A DS28
Daihatsu DS32
Daihatsu PS18
Daihatsu PS20
Daihatsu PS26
Daihatsu PS30
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MaK

German engineering excellence in marine propulsion

16
Models
MaK M20
MaK M25
MaK M32
MaK M43
MaK M20C
MaK M25C
MaK M32C
MaK M43C
MaK M281AK
MaK M332AK
MaK M453AK
MaK M551Ak
MaK M552AK
MaK M453C
MaK M552C
MaK M601C

Wartsila

Finnish innovation in marine power solutions

23
Models
Wartsila L20
Wartsila L20C
Wartsila L20D
Wartsila L26
Wartsila L32
Wartsila L46
Wartsila L46B
Wartsila L46C
Wartsila Vasa 20
Wartsila Vasa 22
Wartsila Vasa 22/26
Wartsila Vasa 32
Wartsila Vasa 46
Wartsila V25
Wartsila V32
Wartsila V32LN
Wartsila V46
Wartsila R20
Wartsila R22
Wartsila R22HF
Wartsila R22/26
Wartsila R32
Wartsila R32LN
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MAN B&W

World-leading four-stroke engine technology

17
Models
MAN B&W L16/24
MAN B&W L21/31
MAN B&W L23/30
MAN B&W L23/30H
MAN B&W L27/38
MAN B&W L28/32
MAN B&W L28/32H
MAN B&W L32/40
MAN B&W L40/54
MAN B&W L48/60
MAN B&W L52/55
MAN B&W L52/55B
MAN B&W L58/64
MAN B&W V23/30A
MAN B&W V28/32A
MAN B&W V32/40
MAN B&W V48/60

Bergen

Norwegian quality in marine diesel engines

18
Models
Bergen C25:33
Bergen B32:40
Bergen KRG
Bergen KRM
Bergen KVG
Bergen KVM
Bergen KRGB
Bergen KRMB
Bergen KVGB
Bergen KVMB
Bergen BRM
Bergen BRG
Bergen BVG
Bergen BVM
Bergen LDG
Bergen LDM
Bergen LDMB
Bergen LSG
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Sulzer

Swiss precision in four-stroke engine design

9
Models
Sulzer S20
Sulzer AL20
Sulzer AL25
Sulzer ASL25
Sulzer ATL25
Sulzer ZL40
Sulzer ZA40
Sulzer ZA40S
Sulzer ZAL40S
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Pielstick

French engineering for marine applications

7
Models
Pielstick PC2
Pielstick PC2.2
Pielstick PC2.5
Pielstick PC2.6
Pielstick PC3
Pielstick PC4
Pielstick PC4.2
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Stork Werkspoor

Dutch heritage in marine engine manufacturing

5
Models
Stork Werkspoor TM410
Stork Werkspoor TM610
Stork Werkspoor TM620
Stork Werkspoor TM410C
Stork Werkspoor TM620C
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Hanshin

Comprehensive range of Japanese marine engines

43
Models
Hanshin EL30
Hanshin EL32
Hanshin EL35
Hanshin EL40
Hanshin EL44
Hanshin ELS32
Hanshin ELS35
Hanshin ELS44
Hanshin L26
Hanshin L26BSH
Hanshin L26BGSH
Hanshin L28RG
Hanshin L46SH
Hanshin LF50A
Hanshin LH24
Hanshin LH26
Hanshin LH26G
Hanshin LH28
Hanshin LH31
Hanshin LH31G
Hanshin LH34
Hanshin LH34LA
Hanshin LH41
Hanshin LU28
Hanshin LU28A
Hanshin LU28R
Hanshin LU28G
Hanshin LU32
Hanshin LU35
Hanshin LU38
Hanshin LU40
Hanshin LU46
Hanshin LU46A
Hanshin LU50
Hanshin LU54
Hanshin LUD24
Hanshin LUD26
Hanshin LUD32
Hanshin LUD35
Hanshin LUS28
Hanshin LUS38
Hanshin LUS40
Hanshin LUS58
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Caterpillar

American reliability in marine power systems

17
Models
Caterpillar C12
Caterpillar C13
Caterpillar C15
Caterpillar C18
Caterpillar C30
Caterpillar C32
Caterpillar 3406
Caterpillar 3408
Caterpillar 3412
Caterpillar 3508
Caterpillar 3512
Caterpillar 3516
Caterpillar 3606
Caterpillar 3608
Caterpillar 3612
Caterpillar 3616
Caterpillar 3618
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Nigata

Japanese innovation in auxiliary power generation

12
Models
Nigata L25HX
Nigata L26HX
Nigata L28HX
Nigata L22HLX
Nigata L26HLX
Nigata L28AHX
Nigata MG22HLX
Nigata MG26HX
Nigata MG28HLX
Nigata MG32CLX
Nigata MG34HX
Nigata MG41HX

Need Specific Four-Stroke Engine Parts?

With over 212+ engine models in our inventory, we can supply parts for virtually any four-stroke marine engine. Contact our team for detailed specifications, availability, and competitive pricing.