Oil-Resistant Rubber Cylinder Head Semi-Circular Gasket for Isuzu 4JJ1 Engine with Precision Sealing

Cylinder head semi-circular gasket (cam end gasket / valve cover plug) seals the semi-circular openings at the ends of the cylinder head, preventing oil leaks and maintaining valvetrain integrity for Isuzu 4JJ1 diesel engines.

• OE Quality: Manufactured to Isuzu dimensional and material specifications for a perfect, leak-free fit
• Oil-Resistant Rubber: Durable elastomer compound resists engine oil, heat, and aging
• Precision Sealing: Designed to seal semi-circular cutouts on cylinder head ends, preventing oil leaks
• Prevents Leaks: Stops oil from escaping the valvetrain area, ensuring clean engine and proper oil pressure
• Direct Replacement: Simple installation - matches OE shape and size
• Cost-Effective: Affordable alternative to genuine OEM gaskets

This semi-circular gasket is specifically designed for Isuzu 4JJ1 engines. Common applications include:

• ISUZU NLR, NRR, NPR, NKR series trucks
• Hitachi CX130B excavator
• Isuzu NKR, JMC vehicles
• Various construction and industrial equipment using 4JJ1 engines

• 4-Cylinder, Inline Diesel, DOHC, Turbocharged, Common Rail
• Displacement: 3.0L (2999cc)

Installation steps (overview):

1. Remove the valve cover from the cylinder head
2. Locate the semi-circular rubber gaskets at the front and rear ends of the cylinder head
3. Remove the old gaskets and clean the sealing surfaces thoroughly
4. Ensure the semi-circular grooves are free of old sealant, dirt, and debris
5. Install the new gasket into the groove, ensuring it is fully seated and not twisted
6. Apply a small amount of sealant at the corners if specified by the service manual
7. Reinstall the valve cover with a new gasket, torquing bolts to specification

• Material Verification: Rubber compound tested for oil resistance, heat aging, and tensile strength
• Dimensional Inspection: Semi-circular profile, thickness, and fit verified against OE blueprints
• Visual Inspection: 100% checked for molding defects, voids, or cracks
• Packaged Safely: Sealed in plastic bag, boxed to prevent deformation

• Neutral export packing or customized packaging available
• Carton or wooden case for safe transportation
• Fast delivery for stock items
• Shipping by Express Air or Sea