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3Z Cylinder Head—Reliable Engine Component for Manufacturing
3Z cylinder head is built for 3Z series diesel engines, widely used for overhaul of small construction machines, farm tractors, mini loaders and irrigation power units. It has five core features:
Separated dual port design per cylinder. One intake and one exhaust runner for each cylinder with smoothly finished inner walls. It cuts airflow resistance and balances gas exchange for naturally aspirated combustion. It delivers steady low-speed torque, perfect for continuous low-rev farm field operation.
Gradual interference fit for valve seat inserts. The seats are pressed in with stepped interference. Even load distribution after thermal expansion prevents tilting or loose inserts and air leakage. The valve sealing band stays consistent over long service time.
Surrounding thin-wall balanced water jacket. Cooling galleries wrap the combustion chamber and exhaust seat. Thin-wall structure accelerates heat exchange and eliminates hotspots on the exhaust side, lowering risks of burnt valve seats and permanent head distortion.
One-setup boring for rocker mounting holes. Rocker supports are cast integrally. All support holes are machined in a single clamping process for superior coaxiality. Rockers move along a stable path, valve lash rarely drifts and frequent adjustment work is reduced.
Full inspection including hydrostatic test and dimension check. Every finished unit passes high-pressure leak test. The position of bolt holes, injector bores and dowel pin holes is verified, together with deck flatness. It avoids assembly trouble and poor sealing caused by misplaced holes.
This compact cylinder head offers good interchangeability. It can be supplied as bare casting or pre-fitted with valves. When assembled with matched overhaul gaskets, it provides reliable sealing and low maintenance cost under intermittent field working conditions.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Importer,Exporter,Trading Company,Seller
Total Annual:
30 million-80 million
Employee Number:
25~50
Ecer Certification：
Verified Supplier
As a premier family-owned enterprise with over 30 years of deep heritage in crankshaft manufacturing and 16 years of strategic global supply chain presence, we are dedicated to heavy-duty engine assemblies, generator sets, and core components. We possess robust, end-to-end supply and delivery ...
As a premier family-owned enterprise with over 30 years of deep heritage in crankshaft manufacturing and 16 years of strategic global supply chain presence, we are dedicated to heavy-duty engine assemblies, generator sets, and core components. We possess robust, end-to-end supply and delivery ...
