Overhaul Gasket Set 5-87815035-0 For ISUZU 4HK1 5.2L Diesel — MLS Head Gasket

This complete engine Overhaul Gasket Set, with OEM numbers 5-87815035-0 and 5-87814890-1, is a precision-engineered replacement kit for the ISUZU 4HK1 5.2L 4-cylinder turbo-diesel engine. The 4HK1 engine is a 5.2-liter common rail diesel engine delivering 129kW (175 hp) of power and 500 N·m of torque, commonly found in medium-duty trucks and heavy machinery. This all-inclusive set is vital for a comprehensive engine rebuild or head gasket repair, ensuring a leak-proof seal and the restoration of factory compression.

Unlike lower-grade alternatives, this kit features Multi-Layer Steel (MLS) head gaskets. MLS gaskets are required for modern high-compression diesel engines like the 4HK1, as they withstand extreme cylinder pressures and temperatures while accommodating the thermal expansion of aluminum cylinder heads. They provide superior durability over traditional composite gaskets and are essential for preventing premature head gasket failure. The set includes all necessary gaskets, seals, and O-rings for a professional rebuild, covering the entire engine from the valve cover to the oil pan.

OEM Number Cross-Reference: 5-87815035-0, 5-87814890-1, 5-87814893-0.

Multi-Layer Steel (MLS) Head Gasket Advantage:
The 4HK1 diesel engine operates at high cylinder pressures. An MLS head gasket utilizes multiple layers of spring steel embossed with sealing beads. This design allows the gasket to maintain a dynamic seal under extreme thermal cycling and cylinder firing pressures, effectively preventing common failure issues such as coolant loss, combustion gas leaks (bubbling radiator), and oil contamination.

Comprehensive Kit Contents:
This full overhaul gasket set is engineered to provide all critical sealing components for a complete engine rebuild, including:

• MLS cylinder head gasket

• Valve stem seals

• Exhaust and intake manifold gaskets

• Turbocharger gaskets

• Valve cover / rocker cover gasket

• Oil pan gasket

• Front and rear crankshaft seals

• Timing cover and water pump gaskets

• Fuel injection pump gaskets

• Full set of O-rings for all engine connections

Note: For a full overhaul, this gasket set should be paired with compatible piston ring and bearing sets (piston liner kits are available separately).

⚠️ Professional Installation Required:

• Surface Preparation: MLS gaskets require a precise surface finish of 10-30 RA (roughness average) on both the cylinder head and block deck.

• Critical Step: Before installation, thoroughly clean all gasket surfaces to remove old sealant and debris. Ensure no oil, water, or dust remains, especially on surfaces where OEM liquid gasket (such as Three Bond 391D) was originally applied.

• Torque Specifications: Always use new cylinder head bolts. Tighten the head bolts to the manufacturer’s specified torque and yield angle. Improper torque is a leading cause of gasket failure.

Pro Tip: When performing a full engine overhaul, always have the cylinder head and block deck checked for flatness by a machine shop. Even minor warping will compromise any gasket seal.

• Certified Manufacturing: This gasket set is manufactured in facilities holding IATF 16949 and ISO 9001:2015 certifications, ensuring it meets strict automotive industry standards for quality and safety.

• OEM Specifications: All components are designed to meet or exceed the specifications and fitment of the original ISUZU parts (8-97331360-1, 8-97349489-0), ensuring a precise fit without modifications.

• Long-Term Durability: Engineered to withstand the rigorous demands of commercial truck operation, providing extended service life and resistance to high-heat, high-pressure conditions.

• Inquiry Call-to-Action

  For Overhaul Gasket Set 5-87815035-0 for ISUZU 4HK1 5.2L Diesel (700P / NPR / NQR):

  • ✔️ Wholesale prices for fleets, repair shops, and distributors

  • ✔️ Single unit sample (verify fitment)

  • ✔️ Bulk order discounts & custom export packaging

  • ✔️ QC report & IATF 16949 certification on request

  Please provide your quantity, destination port, and vehicle specifics (ISUZU model, year, engine code 4HK1) . We can cross‑check fitment with OE catalogs to ensure the correct part is supplied.