Our 1-12563038-6 valve seats solve the B2B pain point of engine compression loss in 6RB1 engines. Built for EX400-5 mining excavators, these seats provide extreme hardness and wear resistance, preventing valve recession even under the intense hydraulic loads of heavy earthmoving.
Item NO.:
1-12563038-6Order(MOQ):
1Payment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANLead Time：
2-3 DAYS
For wholesalers and agents, the 112563-0386 offers an OEM-standard alloy solution with superior heat dissipation. Its precision fit prevents seat loosening, strengthening your reputation for providing elite Isuzu parts that maximize machinery uptime and reduce expensive fleet maintenance.
Product Features
High-Chromium Wear Alloy Forged from premium heat-resistant steel to resist surface pitting and deformation under the continuous high-impact cycles of the 6RB1 engine.
Superior Thermal Conductivity The 112563-0386 facilitates rapid heat transfer from the valve to the cooling jacket, preventing valve stem warping and premature metal fatigue.
Micron-Precision CNC Machining Features ultra-precise dimensional accuracy for a perfect interference fit, ensuring the seat remains stable during extreme thermal expansion.
Corrosion and Oxidation Resistance Specifically treated to withstand high-temperature combustion gases, maintaining a long-term airtight seal in the harshest mining environments.
Exact 1:1 OEM Compliance Manufactured to original Isuzu specifications to ensure seamless installation and the immediate restoration of engine compression and fuel efficiency.
Product Specification
| Product Name | Engine Valve Seat Insert |
| OEM Part Number | 1-12563038-6 / 112563-0386 / 1125630386 |
| Engine Model | Isuzu 6RB1 / 6RB1-T / 6RB1-TC |
| Application | Isuzu NPR / NKR Truck, ELF Series, Excavators, Forklifts |
| Material | High-Strength Chromium-Molybdenum Steel Alloy |
| Installation Type | Direct Replacement (Standard OEM Size) |
| Thickness | Standard OEM Specification |
| Color | Silver Metallic / Natural Steel |
| Working Temperature | -60°C to 800°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.
Certificate
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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