Our 5-12628012-6 front shaft seat eliminates the B2B pain point of valvetrain vibration in 4JB1 engines. Specifically engineered for NKR series and light excavators, it ensures rigid front-end shaft alignment, preventing timing errors and power loss in high-intensity industrial use.
Item NO.:
5-12628012-6Order(MOQ):
1Payment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANLead Time：
2-3 DAYS
For wholesalers and agents, the 512628-0126 represents a reliable OEM-quality solution that minimizes fleet downtime. Its superior cast integrity and thermal stability protect the engine top-end, helping you secure long-term trust with professional repair centers and mining clients.
Product Features
High-Strength Forged Alloy Forged from premium industrial steel to resist structural warping and fatigue under the continuous mechanical stress of 4JB1 engine operations.
Micron-Level Boring Accuracy Features precision-machined bore surfaces for the 512628-0126, ensuring a vibration-free fit and perfectly synchronized valve timing at the front end.
Superior Thermal Resilience Engineered to maintain geometric integrity during extreme engine heat cycles, preventing shaft binding or loosening in high-temperature environments.
Reinforced Structural Support Designed with a heavy-duty base to evenly distribute mechanical pressure, significantly reducing the risk of seat cracking or component failure.
Direct OEM Interchangeability Manufactured to exact 1:1 specifications for a seamless fit, allowing for rapid installation and significantly reduced equipment maintenance time.
Product Specification
| Product Name | Engine Valve Rocker Arm Shaft Seat (Front) |
| OEM Part Number | 5-12628012-6 / 512628-0126 / 5126280126 |
| Engine Model | Isuzu 4JB1 / 4JA1 / 4JH1 |
| Application | Isuzu NPR / NKR Truck, ELF Series, Excavators, Forklifts |
| Material | Provides a rigid, stable mounting base to secure the front of the rocker shaft. |
| Installation Type | Direct Replacement (Standard OEM Size) |
| Thickness | Standard OEM Specification |
| Color | Industrial Gray / Natural Metallic |
| Working Temperature | -40°C to 160°C (Standard engine thermal range) |
| Key Function | Provides a rigid, stable mounting base to secure and align the rocker shaft. |
| 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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