Valve Stem Seal Set for Komatsu DA640 Diesel Engine

Product Attributes

• Product Name: Valve Stem Seal Set
• Fit Engine: Komatsu DA640
• Condition: 100% Brand New, direct‑fit replacement
• Material: Fluorine rubber with metal shell

Product Description

This valve stem seal set is manufactured for Komatsu DA640 diesel engine. Installed on intake and exhaust valve guides, it limits oil flowing into combustion chamber, avoids oil burning and blue smoke. Widely used for heavy‑duty excavators, bulldozers, mining machinery and generator‑set engine rebuild.

We supply parts for Kubota, Cumm ins, CAT, Perkins, Yanmar, Isuzu, Komatsu, Mitsubishi, Hino, Nissan, Vol vo, Deutz, Doosan, Daewoo, John Dee re, Scania, Hyundai, JCB etc.

Shipping: Sea freight, air freight and international express are all available.

Tax Notice: All import duties and local destination taxes shall be borne by the buyer. Please verify local customs regulations in advance.

FAQ

• Q1: Which engine fits this valve stem seal set? A: It fits Komatsu DA640 diesel engine.
• Q2: What symptoms of worn valve stem seals? A: Blue smoke from exhaust pipe, excessive engine oil consumption, carbon deposit on piston and valve.
• Q3: Installation tips? A: Do not scratch seal lip during installation, use special valve‑seal installing tool, check valve guide wear condition first.

Manufacturer Supported Models