New Isuzu 2.6L 4ZE1 Cylinder Head – Perfect for Trooper II, Amigo, Pickup, Rodeo, and Honda Passport Valves and Springs Only

New Isuzu 2.6L 4ZE1 SOHC Cylinder Head

Direct-Fit OEM Replacement for Isuzu and Honda 2.6L Engines

Re-establish OEM-tier volumetric efficiency with this brand-new 4ZE1 SOHC cylinder head. Engineered as a high-fidelity replacement for Isuzu and Honda 2.6L powerplants, this component is precision-cast and machined to satisfy—or surpass—stringent factory tolerances.

By eliminating the thermal fatigue and casting degradations common in high-mileage units, this assembly ensures optimal combustion chamber sealing and valve train alignment. It is the definitive solution for technicians and builders looking to restore nominal compression ratios, stabilize thermal cycling, and recover lost torque curves across the RPM range.

🛠️ In-House Machining Process

• Debris-Free Preparation: Every new casting is chemically cleaned and blown out to remove all residual machining oils, metal shavings, and manufacturing debris. This ensures your oiling system remains uncontaminated from the first start-up.

• In-House Precision Machining: Unlike “shelf-stock” heads, we perform all final machine work in-house. This includes final guide sizing and precision valve seat cutting to ensure perfect geometry and clearances before the head reaches the assembly bench.

• Pressure & Integrity Testing: To go beyond the factory standard, we pressure-test every head to 60 PSI. This verifies that the casting is free of porosity leaks or internal defects that could compromise the cooling or oiling systems.

• Dimensional Inspection: Our technicians perform a multi-point inspection of the gasket-sealing surface and bore alignment. This ensures the head is perfectly flat and meets tight OEM tolerances for a flawless fit.

• Professional Assembly & Setup: Valvetrain components are installed and verified in a clean-room environment. We check spring heights and seal seating to ensure the assembly is balanced and ready for high-performance use.

• Vacuum-Seal Verification: Every intake and exhaust port is Vacuum Tested. This guarantees a 100% airtight seal between the valves and seats, ensuring maximum compression and peak performance right out of the box.

📊 Technical Specifications

• Engine Size: 2.6L
• Engine Code: 4ZE1
• Condition: New
• Fuel System: Compatible with Carbureted and EFI systems
• Core Return Required
• Each Cylinder Head Includes: Valves and Springs Installed

🚛 Fitment Data

Common Applications:

• Isuzu Trooper II: 1988–1991 Isuzu Trooper II (2.6L 4ZE1)
• Isuzu Amigo: 1989–1994 Isuzu Amigo (2.6L 4ZE1)
• Isuzu Pickup: 1988–1995 Isuzu Pickup (2.6L 4ZE1)
• Isuzu Rodeo: 1991–1997 Isuzu Rodeo (2.6L 4ZE1)
• Honda Passport: 1994–1996 Honda Passport (2.6L 4ZE1)