The valve stem seal controls the flow of engine oil to the valve guides, ensuring proper lubrication while preventing excess oil from entering the combustion chamber.

• Prevents oil leakage into cylinders
• Reduces blue smoke from exhaust
• Maintains engine efficiency
• Protects spark plugs and combustion system

Material & Specs:

• High-temperature resistant rubber (NBR / Viton type)
• Designed for long service life under engine heat
• Precision fit for OEM valve guides

Common Symptoms of Failure:

• Blue smoke on startup
• Increased oil consumption
• Fouled spark plugs
• Engine misfire (in severe cases)

Suggest there something better to change other parts together if possible :
When replacing valve stem seals, it is recommended to also inspect or replace:

• Valve cover gasket
• Cylinder head gasket (if removed)
• Timing components (chain/belt)
• Spark plugs / glow plugs
• Engine oil & filter

Replacing seals as a full set is highly recommended for balanced engine performance.

Our company, based in Dubai, United Arab Emirates, supplies original quality parts with fast delivery across all Emirates.
 Delivery across UAE.

Upgrade your engine with original Mitsubishi Valve Stem Seal MMN183952 — ensuring leak-free performance and long-lasting engine reliability.