Our Products

Engine Valves

Precision-engineered intake and exhaust valves designed for durability, performance, and reliability. Serving OEM and aftermarket needs since 2009.

ENGINE VALVES

Engine valves play a critical role in controlling the intake of air-fuel mixture and the discharge of exhaust gases in an internal combustion engine.

High-quality engine valves help improve engine efficiency, enhance power output, and extend engine service life while reducing maintenance costs.

Engine Valves Collection

Precision Manufacturing for Stable Engine Performance

Engine valves operate under extreme conditions, including high temperatures, high-speed movement, and repeated mechanical stress.

From forging and CNC machining to heat treatment and surface finishing, each manufacturing step is carefully controlled.

Over 10,000 square meters of production area
OEM manufacturing experience for well-known global brands
Annual production capacity exceeding 10,000,000 pieces
Fully automated and intelligent production equipment
More than 20 years of manufacturing experience
100% fully automated laser inspection of finished products
Valve Types and TreatmentsSpecial Process Valves

Optimized Materials for Intake and Exhaust Valves

Different engine valves face different operating conditions. Intake valves focus on strength and sealing performance.

We select high-quality alloy steels and heat-resistant materials according to application requirements.

International Engine Valve Material Cross-Reference Table(Reference)

Material Grade
China
GB/T3078-94
Europe (Germany)
DIN EN10090-1998
Japan
JIS G4311-1991
International
ISO683-15-1992
USA
SAE J775-1995
France
NFA35-579-1991
Italy
Cogne
Italy
VALBRUNA
4Cr9Si24Cr9Si2X45CrSi93
(1.4718)
SUH1X45CrSi93HNV3Z45CS9VM11VAL5
5Cr8Si2SUH11X50CrSi82VAL5/BS1
4Cr10Si2Mo4Cr10Si2MoX40CrSiMo102
(1.4731)
SUH3Z40CSD10VM12DVAL5M
8Cr20Si2Ni8Cr20Si2NiSUH4HNV6Z80CNS20-20VM21AVL9
Cr18Mo2VX85CrMoV182
(1.4748)
X85CrMoV182Z85CDV18-02VM22ACMV
4Cr14Ni14W2Mo4Cr14Ni14W2MoEV9Z35CNWS14-14VA31ACNW
21-2NX55CrMnNiN208
(1.4875)
X55CrMnNiN208EV12Z55CMN20-08AZVA66212MN
21-4N5Cr21Mn9Ni4NX53CrMnNiN219
(1.4871)
SUH35X53CrMnNiN219EV8Z53CMN21-09AZVA61214MN
21-12N2Cr21Ni12NSUH37EV4Z20CN21-12AZVA35APFR
21-4NWNbX50CrMnNiNbN219
(1.4882)
X50CrMnNiNbN219XEV-FZ50CMNNB
21-09-02AZ
VA63214MNCW
6Cr21Mn10MoVNbNX60CrMnMoNiNbN2110
(1.4785)
Z60CMDVNB
21-10AZ
VA64S522
23-8NX33CrNiMnN238
(1.4866)
X33CrNiMnN238EV16VA34NTR
20-11PSUH38
Inconel 751NCF751NiCr15Fe7TiAlHEV3

Custom Engine Valve Solutions for Global Applications

In addition to standard engine valve models, we offer customized engine valve solutions based on customer drawings.

Our engine valves are widely used in passenger vehicles, commercial vehicles, motorcycles, and power equipment.

Depends on your need

Customized Range

Engine Valve Dimension Scope
DIMENSION SCOPE
LENGTH
SEAT DIA
FACE ANGLE
STEM DIA

Product Categories

Browse by Type

Friction Weld
Friction Weld

Consistent Quality from an Experienced Manufacturer

With over 20 years of manufacturing experience, we focus on consistency, reliability, and long-term performance.

Reliable engine valves contribute to smoother engine operation, improved combustion efficiency, and reduced downtime.

Ready to Get Started?

Contact our engineering team to discuss your valve requirements. We offer custom solutions for OEM and aftermarket applications.

Topu Engine Parts Co.,Ltd.

No. 512, Yunchuang Road Wujiang Economic Development Zone Suzhou, Jiangsu Province, China