Valve Stem Oil Seals for CAT C7.1 Direct Injection Diesel Engine

• Fluorine rubber construction, durable under high heat and engine oil exposure
• Precision size to fit valve stems tightly
• Reduces oil consumption and eliminates blue exhaust smoke caused by oil burning
• Reliable sealing for heavy‑duty construction equipment
• Suitable for complete engine overhaul

These valve stem oil seals are manufactured for CAT C7.1 direct injection diesel engine. They restrict engine oil from entering the combustion chamber, lowering oil burn and exhaust smoke.

We supply parts for Kubota, Cumm ins, CAT, Perkins, Yanmar, Isuzu, Komatsu, Mitsubishi, Hino, Nissan, Vo lvo, Deutz, Doosan, Daewoo, John D eere, 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.

Q1: Which engine do these valve stem oil seals fit?

A: They fit CAT C7.1 direct injection diesel engine.

Q2: What is the OEM part number?

A: OEM part number is 3686102.

Q3: Installation suggestion?

A: Replace all seals during overhaul, use special tool to avoid seal damage during installation.