146673-01150 | CYLINDER LINER

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40.00 KGS
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WTQ is a large enterprise that is professional in producing cylinder liners. It has a history of 50 years. The products include 200 types and specifications of cylinder liner, diameters ranges from Φ75 to Φ500mm and mainly serve for the commercial vehicle, engineering machine, ship and generator set. The annual production OF WTQ  is about 10 million pcs, and the sales of commercial vehicle cylinder liners and engineering machinery cylinder liners is always on the top of the same industry in China.

Their products serve for the commercial vehicles of all brands,  the market share of automotive diesel engines is more than 50%. In China, WTQ mainly supply to Weichai Power Co.,Ltd, FAW Jiefang Automotive Co., Ltd, Wuxi Diesel Engine Works, DEUTZ (Dalian) Engine Co.,Ltd, Guangxi Yuchai Machinery Group Co., Ltd, Shanghai Diesel Engine Co., Ltd, Dongfeng Motor Corporation, Saic Fiat Powertrain Hongyan Co., Ltd, Guangxi Cummins Industrial Power Co., Ltd, Xi'an Cummins Engine Co., Ltd, Beijing Foton Cummins Engine Co.,Ltd, Jiangxi Isuzu Engine Co.,Ltd, Tianjing Lovol Engine Co.,Ltd and Nanjing Iveco Co.,Ltd. They are the A class supplier of all the important engine factories. WTQ supplies medium speed engine cylinder liners for Shanxi Diesel Engine Heavy Industry Co., Ltd, Hudong Heavy Machinery Co.,Ltd, Weichai Heavy Machinery Co.,Ltd, Guangxi Yuchai Machinery Group Co., Ltd, Guangzhou Diesel Engine Factory Co.,Ltd and Ningbo C.S.I. Power & Machinery Group Co., Ltd.

For the international market, they have become the medium speed engine cylinder liner supplier of Wartsila, MAN, GE and CAT. WTQ have become a qualified supplier for the first class engine enterprises as Daimler, FIAT, Navistar and Cummins.



Made of a special cast iron, the cylinder liner has the special thermal treated surface. The inner face is finished with precision honing. On the upper part of inner diameter of the liner, an anti-polish ring is mounted.


The item is strictly produced in accordance with Yanmar original technical standard and drawings. The performance of it is the same as Yanmar genuine part, and also, it is able to be exchanged with YANMAR genuine part.


Certified with BV certificate



1.1.   Wear of the cylinder liner and protection ring inner diameters depends on the quality of the fuel oil used, control of lubricating oil, and cooling water temperature. Progress of wear causes problems such as blow-by and increase in the consumption of lubricating oil, and therefore when the parts reach or come close to the use limit, be minded to replace them in an earlier stage.

1.2.   In case of the corrosion or cavitation is found, the following possible reasons can be considered:

        1) Cooling water rust preventive agent is not effectively working.

        2) Cooling water pressure is low.

        3) Cooling water is mixed with air.

        Conduct appropriate cooling water control in strict conformance with the Control Standard.

1.3.   Pale gray-brownish deposit is a film of the rust preventive agent that has been used. Therefore, do not remove it.

1.4.  1) Do not apply silicone rubber to the O-ring.

        2) After silicone rubber is applied, assemble the cylinder liner at a little earlier timing heffner it dries.

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Warranty Information

24 months from the receipt of the item.
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