Guangzhou Jianxin Mechanical Equipment Co., Ltd.
| Packaging Details | Standard export carton |
| Supply Ability | 100 Pieces per Month |
| Delivery Time | 3–7 work days |
| Color | French grey |
| Model Number | 8-94239501-0 |
| Place of Origin | Japan |
| Brand Name | ISUZU |
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Product Specification
| Packaging Details | Standard export carton | Supply Ability | 100 Pieces per Month |
| Delivery Time | 3–7 work days | Color | French grey |
| Model Number | 8-94239501-0 | Place of Origin | Japan |
| Brand Name | ISUZU |
8-94239501-0 Isuzu 4JJ1 Engine Valve Lock – for Hitachi Sumitomo Sany 135 Excavator
This product is a dedicated valve lock (valve spring retainer lock) for the Isuzu 4JJ1 series diesel engine, with part number 8-94239501-0. The valve lock is a critical small component in the valve train, responsible for securing the valve spring upper retainer to the valve stem while withstanding high-frequency reciprocating loads to ensure precise valve opening and closing timing. Manufactured from high-strength alloy steel with precision processing and surface treatment, it offers excellent wear resistance and fatigue strength. It is suitable for 4JJ1 engines installed in Hitachi, Sumitomo, and Sany 135-class excavators.
OEM Specification – Manufactured to strict Isuzu OE standards for direct replacement without any modification.
High-Quality Material – Made of high-strength alloy steel with precision forging and heat treatment for optimal balance of hardness and toughness.
Precision Machining – Tapered mating surface precisely matches the valve stem groove for secure locking, effectively preventing valve drop-out or spring retainer loosening.
Wear & Fatigue Resistant – Surface treated for corrosion and wear resistance, capable of withstanding high-frequency impact loads under continuous high-speed engine operation.
Cost-Effective – OEM quality at competitive aftermarket pricing.
| Parameter | Value |
|---|---|
| Part Number | 8-94239501-0 |
| Applicable Engine | Isuzu 4JJ1 (Diesel) |
| Compatible Brands | Hitachi / Sumitomo / Sany 135 Excavators |
| Product Type | Valve Lock (Valve Spring Retainer Lock) |
| Installation Position | Valve spring upper retainer to valve stem joint |
Note: For more detailed specifications, please refer to the actual product or the OEM manual.
Hitachi, Sumitomo, and Sany 135-class excavators equipped with the Isuzu 4JJ1 engine.
Please confirm compatibility with your original part number.
Packaging: Carton box
MOQ: 1 set (supplied per engine set)
Lead Time: In stock, ships within 24 hours after order placement; bulk orders please contact us.
Valve locks are critical safety components in the engine valve train. Replacement must be performed by a professional technician.
Clean the valve stem groove and retainer taper surface thoroughly before installation; remove any oil, dirt, or burrs.
Use a proper valve spring compressor tool during installation to ensure the lock fully engages into the valve stem groove.
It is recommended to replace all valve locks on the same engine as a complete set to ensure consistency and reliability.
After installation, manually rotate the crankshaft to verify normal valve operation and confirm that the locks are securely in place.
Company Details
Business Type:
Distributor/Wholesaler
Year Established:
2012
Total Annual:
10000000-25000000
Employee Number:
101~200
Ecer Certification：
Verified Supplier
We are a professional distributor specializing in Isuzu engine parts, covering fuel injection systems (injectors, nozzles, high-pressure pumps), cooling systems (radiators, oil coolers), and core engine components (cylinder blocks, pistons, crankshafts, etc.). With years of experience in the auto pa... We are a professional distributor specializing in Isuzu engine parts, covering fuel injection systems (injectors, nozzles, high-pressure pumps), cooling systems (radiators, oil coolers), and core engine components (cylinder blocks, pistons, crankshafts, etc.). With years of experience in the auto pa...
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