Our 8-94391468-6 valve seats solve the B2B pain point of compression loss in 4HK1 engines. Built for ZX200-3 excavators, these seats feature high-chromium alloys that prevent valve recession and surface pitting during the high-intensity thermal cycles typical of mining operations.
Item NO.:
8-94391468-6Order(MOQ):
1Payment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANLead Time:
2-3 DAYSFor wholesalers and agents, the 894391-4686 offers an OEM-standard solution that extends cylinder head service life. Its superior heat dissipation and impact resistance reduce fleet maintenance costs, helping you build long-term trust with clients who demand peak machinery reliability.
Product Features

Premium Heat-Resistant Alloy Forged from high-chromium steel to resist surface deformation and oxidation under the extreme combustion temperatures of the 4HK1 engine.
Enhanced Thermal Conductivity The 894391-4686 facilitates rapid heat transfer from the valve to the cooling jacket, preventing valve stem warping and premature fatigue.
Precision-Ground Sealing Surface Features micron-level surface accuracy to ensure a 100% airtight seal with the valve face, immediately restoring original engine compression.
Stable Interference Fit Machined to strict dimensional tolerances to ensure the seat remains securely seated in the head during extreme thermal expansion and contraction.
Universal 4HK1 Compatibility Manufactured to exact 1:1 original specifications, ensuring a seamless fit for all ZX200-3 and related Isuzu industrial engine applications.
Product Specification
| Product Name | Engine Valve Seat Insert |
| OEM Part Number | 8-94391468-6 / 894391-4686 / 8943914686 |
| Engine Model | Isuzu 4HK1 / 4HK1-T / 6HK1 |
| Application | Isuzu NPR / NKR Truck, ELF Series, Excavators, Forklifts |
| Material | High-Strength Chromium-Molybdenum Alloy |
| Installation Type | Direct Replacement (Standard OEM Size) |
| Thickness | Standard OEM Specification |
| Color | Silver Metallic / Natural Steel |
| Working Temperature | -60°C to 750°C (High-heat combustion resilience) |
| Key Function | Provides a hardened, heat-resistant surface for valves to seal against the cylinder head. |
| Condition | 100% New, Aftermarket / OEM Quality |
| Packaging | Neutral Packing / Customized Box |

Why Choose Us
1.We have profession isuzu team,more than 20 years experience business isuzu parts.
2. We can offer used and new isuzu genuine parts, oem,good quality made in china parts to you.
3. The isuzu genuine parts will give weight,price when quotation.
4.Isuzu genuine stock pictures will send before order.
5.All isuzu parts can check with part number,all parts can order follow part number.
6. Quick delivery time,in 24 hours if sotck.
7. Safe packing to protect the goods, such as wooden box, Iron sheet for our isuzu parts.
8. Small quantity can accept.Sample order also accept.
9. 24 hours oversea service.
10.Lifelong after-sales service.

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What's the shipping way you can offer?
1) Big order: By sea or by air.(It can reduce the costs)
2) Small order: DHL, TNT, UPS, FEDEX, EMS,ARAMEX

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