OEM 5-87815243-0 Multi-Layer Steel (MLS) Cylinder Head Gasket for ISUZU 4JK1 2.5L Turbo Diesel Engine

5-87815243-0 OEM Cylinder Head Gasket for ISUZU D-MAX 4JK1-TC 4JK1-TCX 2.5L Turbo Diesel (2018+)

The Cylinder Head Gasket with OEM reference number 5-87815243-0 is a verified direct-fit replacement for the ISUZU 4JK1 2.5L turbo-diesel engine, specifically designed for the 2018 ISUZU D-MAX (TFR/TFS chassis). This gasket is a critical sealing component that sits between the engine block and cylinder head, creating a seal that withstands extreme temperatures and pressures.

The 4JK1 engine family includes the 4JK1-TC and 4JK1-TCX 2.5L turbo-diesel variants. For the 2018 D-MAX, the engine is commonly the 4JK1-TCX (LR0), producing 100kW (136hp), with other variants such as the 4JK1-E5S-L producing up to 120kW (163hp).

The cylinder head gasket serves to separate the cooling and oil passages while sealing the combustion chamber. A failing head gasket can lead to serious engine issues including loss of compression, reduced engine power, mixing of coolant and oil (milky emulsion), engine overheating, or white smoke from the exhaust. This OE‑spec replacement gasket restores proper engine sealing and performance.

Manufactured as a Multi-Layer Steel (MLS) gasket, this gasket offers superior strength and sealing capabilities under high pressure and temperature conditions — ideal for modern turbo-diesel applications.

• Loss of compression — reduced engine power and efficiency
• Coolant and oil mixing — milky substance on oil cap or dipstick
• White smoke from exhaust
• Rising engine temperatures or overheating
• External oil or coolant leakage from cylinder head area

(Reference ISUZU workshop manual for complete steps):

1. Safety first — allow engine to cool completely before starting work
2. Drain engine oil and coolant
3. Remove cylinder head following manufacturer sequence
4. Thoroughly clean both the cylinder block and cylinder head sealing surfaces — remove all old gasket material
5. Inspect the cylinder head and block for flatness — warpage beyond specification requires machining
6. Check cylinder head bolt threads — clean and inspect for damage
7. Place the new cylinder head gasket on the cylinder block — ensure correct orientation
8. Install cylinder head and torque bolts to manufacturer specification in the correct sequence
9. Reassemble all components, refill with fresh oil and coolant
10. Start engine, check for leaks, and perform break-in procedure

• Always use new cylinder head bolts (torque-to-yield type must be replaced)
• Have the cylinder head checked for cracks or warpage by a machine shop
• Use the correct torque specifications — improper installation can negate even the highest-quality gasket

• Individually sealed in protective packaging
• Packed in neutral box or custom packaging available upon request
• Bulk wholesale available in master cartons
• Minimum Order Quantity: 5 PCS
• Delivery Time: Within 8 days after payment
• Supply Capacity: 10,000+ sets/month
• Suitable for: ISUZU specialist repair shops, truck fleet maintenance depots, commercial vehicle parts distributors