Our 8-94129551-6 rocker shaft addresses the B2B pain point of engine timing lag in 4BD1 units. Engineered for NPR trucks and excavators, this hardened shaft offers superior wear resistance compared to standard parts, ensuring stable valve actuation in high-vibration mining environments.
Item NO.:
8-94129551-6Order(MOQ):
1Payment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANLead Time:
2-3 DAYSFor wholesalers and agents, the 894129-5516 represents a high-reliability, OEM-standard solution that reduces equipment downtime. By providing consistent lubrication and structural integrity, this shaft lowers maintenance costs and strengthens your reputation as a trusted Isuzu parts supplier.
Product Features

High-Frequency Induction Hardening Surface is heat-treated to reach extreme hardness, preventing surface scoring and pitting even under continuous high-load industrial operations.
Precision-Engineered Oil Ports Features micro-polished oil channels to ensure a constant lubricant film, effectively eliminating the risk of heat seizure on the rocker arm interfaces.
High-Strength Forged Alloy Steel Constructed from premium materials to absorb mechanical shocks and resist bending, specifically designed for the high-torque demands of the 4BD1 engine.
Micron-Level Dimensional Accuracy Manufactured to exact original tolerances for the 894129-5516, ensuring a perfect 1:1 fit and rapid installation for maintenance teams.
Anti-Corrosive Protective Finish Finished with a professional-grade rust-inhibitor coating to maintain pristine quality during international transit and long-term warehouse storage.
Product Specification
| Product Name | Engine Valve Rocker Arm Shaft |
| OEM Part Number | 8-94129551-6 / 894129-5516 / 8941295516 |
| Engine Model | Isuzu 4BD1 / 4BD1T |
| Application | Isuzu NPR / NKR Truck, ELF Series, Excavators, Forklifts |
| Material | High-strength alloy steel (e.g., 20Cr, 45Cr), hardened and tempered for wear resistance |
| Installation Type | Direct Replacement (Standard OEM Size) |
| Thickness | Standard OEM Specification |
| Color | Bright Polished Steel / Anti-Rust Oiled |
| Working Temperature | -40°C to 160°C (Standard engine thermal range) |
| Key Function | Serves as the central pivot axis for rocker arms to control precise valve timing and actuation. |
| 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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