Our 8-94433303-6 rocker shaft spring eliminates the B2B pain point of rocker arm misalignment in 4JG1 engines. Specifically built for ZX70 excavators, it provides high-cycle fatigue resistance, ensuring the rocker arms remain perfectly centered for precise valve timing in mining sites.
Item NO.:
8-94433303-6Order(MOQ):
1Payment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANLead Time:
2-3 DAYSFor wholesalers and agents, the 894433-3036 offers an OEM-standard solution that prevents engine noise and power loss. By using premium spring steel with stable elasticity, this part reduces long-term maintenance costs and secures your reputation as a provider of reliable Isuzu components.
Product Features

High-Fatigue Spring Steel Manufactured from premium alloy spring steel to withstand millions of compression cycles without losing its original height or tension.
Anti-Vibration Stability Provides precise lateral tension to keep rocker arms aligned, effectively reducing engine noise and preventing uneven wear on the valve train.
Shot-Peened for Durability The surface is shot-peened to increase fatigue life and eliminate micro-cracks, ensuring reliable performance under high-load excavator operations.
OEM Tolerance Matching Produced to the exact specifications of the 894433-3036, guaranteeing a perfect fit on the rocker shaft for immediate restoration of engine efficiency.
Heat-Resistant Coating Finished with a specialized oil-compatible coating to resist corrosion and maintain elasticity even during extreme engine thermal cycles.
Product Specification
| Product Name | Valve rocker shaft spring |
| OEM Part Number | 8-94433303-6 / 894433-3036 / 8944333036 |
| Engine Model | Isuzu 4JG1 / 4JG1-T |
| 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 | Natural Steel / Black Phosphated |
| Working Temperature | -40°C to 160°C (Standard engine thermal range) |
| Key Function | Maintains the axial position of the rocker arms and absorbs lateral vibration on the 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.

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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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