High-strength alloy steel Valve Tappet for Isuzu NKR55 4JB1 Engine - Direct OEM Replacement with Precision Ground Surface

Premium-quality valve tappet designed as a direct replacement for Isuzu NKR55 light-duty trucks equipped with the 4JB1 diesel engine. This component ensures precise valve timing and reliable valvetrain operation.

Function: Transfers camshaft lobe motion to the pushrod or valve stem, ensuring precise valve timing while reducing wear and maintaining quiet valvetrain operation.

• OE Quality: Manufactured to Isuzu dimensional and material specifications
• Hardened Contact Face: Resists wear from camshaft lobe contact
• Precision Ground: Smooth surface ensures consistent operation and reduced friction
• Oil Passage: Proper lubrication to reduce wear and extend service life
• Direct Replacement: Matches OE dimensions for simple installation
• Cost-Effective: Affordable alternative to genuine OEM tappets

Specifically designed for Isuzu NKR55 trucks with 4JB1 engine. May also fit other Isuzu models with 4JB1 engine (verify compatibility).

• 4-Cylinder, Inline Diesel, OHV
• Displacement: 2.8L (2771cc)

1. Remove valve cover and rocker arm assembly
2. Remove pushrods (if applicable) and old tappets from engine block
3. Clean the tappet bores in the cylinder block
4. Lubricate new tappet with engine assembly lube
5. Install new tappet into bore, ensuring free movement
6. Reinstall pushrods and rocker arm assembly
7. Adjust valve lash to OE specification (0.25-0.35mm cold for 4JB1)
8. Install new valve cover gasket and reassemble
9. Start engine and check for abnormal noise
10. Re-check valve lash after warm-up if required

• Material verification of steel/iron alloy composition and hardness
• Dimensional inspection of outer diameter, height, and contact face geometry
• Hardness testing of contact face (HRC 55-60)
• Surface finish check (Ra ≤ 0.2 μm)
• 100% visual inspection for defects, burrs, or surface flaws
• Safe packaging with protective oil paper and sealed plastic bags

• 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

For pricing, availability, or bulk purchase of the Valve Tappet 8-94438305-0 for Isuzu NKR55 4JB1 Engine, please contact our sales team for competitive quotes and expert technical support.