Cap Valve Seal for Isuzu Reach & Isuzu NPR, 4JJ1, 3.0L Diesel 2011-2017 OEM Engine Valve Stem Seal

Restore proper engine sealing performance with this new OEM cap valve seal designed for 2011–2017 Isuzu Reach and NPR models equipped with the 4JJ1 3.0L turbo diesel engine.

This valve stem seal (valve cap seal) plays a critical role in controlling oil flow to the valve guides while preventing excess oil from entering the combustion chamber. A worn or hardened valve seal can cause blue exhaust smoke, oil consumption, and reduced engine efficiency.

Manufactured to OEM specifications, this valve seal ensures proper fitment, high heat resistance, and long-lasting durability under diesel operating conditions.

Key Features:

• Genuine OEM-spec valve stem (cap) seal

• Designed for 4JJ1 3.0L turbo diesel engine

• Controls oil flow to valve guides

• Reduces oil consumption and blue smoke

• High-temperature resistant material

• Direct replacement – no modification required

Vehicle Compatibility:

• 2011–2017 Isuzu Reach

• 2011–2017 Isuzu NPR

• Engine: 4JJ1 3.0L Diesel

  Is this valve seal compatible with all 4JJ1 3.0L engines?

  This valve stem seal is designed for 2011–2017 Isuzu Reach and NPR models equipped with the 4JJ1 3.0L turbo diesel engine. Fitment should be confirmed using VIN or OEM part number.

  What are the symptoms of worn valve stem seals?

  Common symptoms include blue smoke from the exhaust, increased oil consumption, rough idle, and carbon buildup in the combustion chamber.

  Is this a genuine OEM part?

  Yes, this is a new OEM-spec valve cap seal manufactured to meet original factory performance and durability standards.

  Is this sold individually or as a full engine set?

  This listing is for an individual valve seal unless otherwise specified. For a full engine set, please confirm quantity requirements before ordering.