
Product Overview
This is a genuine Saimimi rocker arm adjusting screw bolt, part number 8-94367526-2, engineered for Isuzu 4HF1 diesel engines. As a trusted supplier in the global heavy-duty parts market, we provide reliable OEM-quality components with direct shipping to major industrial hubs across North America, Europe, the Middle East, and Asia-Pacific. This critical valve train component is essential for maintaining precise valve lash and optimal engine performance.
Key Features & Benefits
- Genuine Quality: Manufactured by Saimimi to exact OEM specifications, ensuring perfect fit and function for Isuzu 4HF1 engines.
- Precision Engineered: Provides accurate and stable valve lash adjustment, critical for engine efficiency, fuel economy, and emissions control.
- High-Durability Construction: Made from high-grade materials to withstand the high-stress environment of the valve train, offering excellent wear resistance and long service life.
- Maintains Engine Performance: Correct valve clearance is vital for power output, prevents valve train noise, and protects against costly damage to valves and rocker arms.
- Direct Replacement: Designed as a direct bolt-on component, simplifying maintenance and repair procedures for fleet managers and workshops.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 8-94367526-2 |
| OEM / Brand | Saimimi (Genuine) |
| Engine Model | Isuzu 4HF1 |
| Part Name | Rocker Arm Adjusting Screw / Bolt |
| Country of Manufacture | Japan |
| Application | Valve Lash Adjustment |
OEM Cross-Reference
This genuine Saimimi part corresponds directly to the following OEM part number:
- 8-94367526-2 (Primary Saimimi/Isuzu Number)
Note: Always verify the part number stamped on your original component for exact compatibility.
Compatibility
This rocker arm adjusting screw is specifically designed for use in:
- Engine Model: Isuzu 4HF1 diesel engine.
- Vehicle Applications: Commonly found in Isuzu NPR, NQR, and FSR series trucks and other commercial vehicles equipped with the 4HF1 powerplant. Applicable to model years utilizing this engine family.
Global Supply & Distribution
We specialize in the international export of heavy-duty engine components. Our logistics network ensures efficient delivery to key markets worldwide.
- Worldwide Shipping: We ship to all major continents including North America (USA, Canada, Mexico), South America, Europe (EU, UK), Asia-Pacific (Australia, Singapore, Japan), the Middle East, and Africa.
- Fast Port Delivery: Consolidated container shipments to major ports like Los Angeles, Rotterdam, Singapore, Jebel Ali, and Sydney for rapid regional distribution.
- B2B Expertise: Experienced in international trade documentation, customs compliance (INCOTERMS), and bulk order fulfillment for distributors, workshops, and fleet operators.
Quality Assurance
- OEM Standards: Manufactured to the original Isuzu/Saimimi engineering drawings and material specifications.
- Rigorous Inspection: Each batch undergoes dimensional checks and visual inspection to ensure defect-free delivery.
- Reliability: Built for the demanding lifecycle of commercial vehicle engines, providing dependable performance.
- Supplier Warranty: Backed by our standard warranty against manufacturing defects. Please contact us for specific warranty terms.
FAQ
Q1: How do I know if my rocker arm adjusting screw needs replacement?
A1: Common signs include an inability to achieve or hold proper valve lash adjustment, excessive valve train noise (ticking), visible wear or rounding on the screw tip, or thread damage. Regular maintenance checks are recommended.
Q2: Is this a single screw, or is it sold as a set for the entire engine?
A2> This listing is for one (1) genuine Saimimi rocker arm adjusting screw bolt, part number 8-94367526-2. The 4HF1 engine requires multiple units. Please check your engine’s specific requirement and order the necessary quantity.
Q3: Do you provide technical support for installation?
A3> While we supply the genuine component, installation should be performed by a qualified technician following the official Isuzu service manual procedures. Critical steps include setting the engine to TDC for the correct cylinder and using a feeler gauge to set the specified valve clearance after installation.
Our advantages

1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.
2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.
3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.
4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.
5. Scientific ERP system, easy and fast to locate the parts that customer needs.
6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.
Exhibition

Packing&Shipping

1. Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).
2. Once we get confirmation of payment, we will ship products in 2 days.
3. Our packaging is standard export wooden box or others as your requirement.
4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.

FAQ
Q1. What is your company major products?
A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.
Q2.What is the MOQ?
A: Normally we can supply any quantity if we have in stock.
Q3. What is your payment term ?
A: We accept Western Union, T/T, Paypal.
Q4. What is the packing ?
A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.
Q5. When can you deliver products after payment ?
A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .
Q6. What can you do to complete order perfectly ?
A: In the beginning , We will communicate with clients in details to understand what they need .
Before packing , We will check the products and send photos to clients .After confirmation ,
We will packing products well to avoid damage . Once we get tracking number ,
We will send it to customer and keep contact in with clients .