Koyama’s cast parts and components play vital roles in automobile, construction machinery, agricultural machinery and various other industrial fields. Not only do we deliver cast materials, but we can also deliver machined products.

Engine parts for automobiles and construction machinery

• Cylinder head
• AC4C-T6
• 10

• Cylinder liner
• FC250
• 2〜3

• Center housing
  Bearing housing
• FC250
• 4〜6

• Turbine housing
• FCD high silicon
• 10〜15

• Compressor housing
• AC4A
• 0.4〜4

Automobile transmission parts

• Drive pinion retainer (for CVT)
• AC4B-T6
• 5

• (1) Oil pump cover
  (2) Housing (for multistage AT)
• (1) AC4B-T6 , (2) FC250
• (1) 6 , (2) 5

• Differential case
• FCD450-10
• 1〜5

Running motor parts for construction machinery

• End cap, End cover, Rear casing,
  Rear cover, Rear flange
• FCV410
  FCD450-10
  FCD500-7
• 5〜35

• Body, Motor case
• FCD450-10
  FCD500-7
  FCD600-3
• 50〜150

• Cylinder, Body, Barrel
• FCD600-3
  FCD700-2
• 1〜25

Turning motor parts for construction machinery

• Housing, Case, Casing
• FC300
  FCD450-10
• 20〜120

• Housing, Valve housing
• FCV410
• 5〜50

• Cylinder, Body, Barrel
• FCD600-3
  FCD700-2
• 1〜25

Control valve parts for construction machinery & hydraulic equipment

• Housing, Valve housing,
  Casing (mono-block type)
• FC300
  FCV410
  FCD450-10
  FCD500-7
  FCD600-3
• 5〜200

• Housing, Valve block (stack type)
• FC250
  FC300
  FCV340
  FCV410
  FCD450-10
• 1〜10

Pump parts for construction machinery & hydraulic equipment

• Pump case
• FC250
  FC300
  FCV410
• 10〜80

• Valve cover
• FCD450-10
  FCD600-3
• 10〜70

• Front case
• FC300
• 40〜80

• Rear case
• FC300
• 30〜70

• End cap, Center case
• FCV410
  FCD450-10
• 10〜80

Parts for industrial machinery

• Cylinder block
• FC250
• 15〜60

• Crank shaft
• FCD700-2
• 4〜6

• Axle case
• FC250
• 20

• Cylinder case
• AC4C-T6
• 7