Yimi (Guangzhou) Automotive Parts Co, Ltd
| Valve Stem Seals | High-temperature Viton |
| Payment Terms | T/T,Western Union |
| Delivery Time | 5-8 Work Days |
| Engine Model | ISUZU 4HK1 |
| Valve Seats | Powder metal / sintered alloy |
| Packaging Details | Neutral Package or as customers’ request |
| Cylinder Configuration | Inline 4-cylinder, DOHC, 16-valve |
| Fuel System | Denso common rail direct injection |
| Valve Guides | Precision-machined iron alloy |
| Supply Ability | 5000 pcs/month |
| Cast Material | High-strength alloy cast iron |
| OEM Part Number | 8-98008363-6, 8-98018454-5 |
| Model Number | ISUZU 4HK1 NQR75 NPR5 700P |
| Place of Origin | China |
| Brand Name | YIMI |
| Certification | ISO/TS16949 |
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Product Specification
| Valve Stem Seals | High-temperature Viton | Payment Terms | T/T,Western Union |
| Delivery Time | 5-8 Work Days | Engine Model | ISUZU 4HK1 |
| Valve Seats | Powder metal / sintered alloy | Packaging Details | Neutral Package or as customers’ request |
| Cylinder Configuration | Inline 4-cylinder, DOHC, 16-valve | Fuel System | Denso common rail direct injection |
| Valve Guides | Precision-machined iron alloy | Supply Ability | 5000 pcs/month |
| Cast Material | High-strength alloy cast iron | OEM Part Number | 8-98008363-6, 8-98018454-5 |
| Model Number | ISUZU 4HK1 NQR75 NPR5 700P | Place of Origin | China |
| Brand Name | YIMI | Certification | ISO/TS16949 |
| High Light | Isuzu 4HK1 cylinder head assembly ，16-valve DOHC engine cylinder head ，high-strength alloy cast iron cylinder | ||
The cylinder head assembly carrying OEM numbers 8-98008363-6 and 8-98018454-5 is a direct replacement for the ISUZU 4HK1 5.2L inline-four common rail diesel engine. Designed for medium-duty trucks including ISUZU NQR75, NPR5, and 700P series, as well as off-road equipment like Hitachi ZX200-3 and ZX240-3 excavators.
The 4HK1 is a 5,193 cc turbocharged diesel engine with bore and stroke of 115 mm × 125 mm, delivering 215 to 240 horsepower at 2,400-2,500 rpm and torque up to 452 lb-ft at 1,850 rpm. Operating with a common rail fuel injection system at up to 1,600 bar, the cylinder head is precision-manufactured to withstand extreme thermal and mechanical loads.
| Part Number | 8-98008363-6, 8-98018454-5 |
|---|---|
| Product Name | Cylinder Head Assembly |
| Car Model | ISUZU NQR75 NPR5 700P |
| Engine Model | ISUZU 4HK1 |
| Condition | 100% Brand New |
| Origin | China Mainland |
| Main Market | Middle East, Asia, Africa, South America, North America & Europe |
| Material | High-strength aluminum alloy & precision bearings |
| Cooling Type | Engine coolant circulation |
| Installation | Direct OEM replacement |
| Quality Standard | OEM equivalent / ISO quality control |
This ISUZU 4HK1 cylinder head assembly 8-98008363-6 directly replaces the factory head in the following configurations:
| Chassis / Model | Engine | Years | Notes |
|---|---|---|---|
| ISUZU NQR75 | 4HK1 | 2005-2010 | Medium chassis, 6-wheel |
| ISUZU NPR5 / NPR | 4HK1-TC | 2005-2015 | Most common N-series application |
| ISUZU 700P | 4HK1-TCN | 2005-2010 | North American and Asian markets |
| ISUZU NPR-HD | 4HK1-TCS | 2008-2016 | Heavy-duty variant, up to 11,700 kg GVWR |
| ISUZU NRR | 4HK1 | 2011-2016 | Low tilt and crew cab models |
| ISUZU FRR | 4HK1-TC / 4HK1-TCH | 2008-2016 | Medium chassis |
| ISUZU ELF | 4HK1 | 2006-present | Japanese domestic N-series |
| Hitachi ZX200-3, ZX240-3 | 4HK1 | 2006-2010 | Hydraulic excavator |
Cross-industry compatibility extends to:
Each cylinder head batch undergoes comprehensive verification with IATF 16949 certification:
| QC Item | Verification Method |
|---|---|
| Material composition | Spectrographic analysis per casting batch |
| Hardness | Brinell hardness test on casting body |
| Combustion chamber volume | Measured on CMM – within ±0.5 cc of OE specification |
| Valve seat concentricity | Runout gauge measurement – ≤0.03 mm |
| Valve guide clearance | Air gauge measurement of ID |
| Valve stem protrusion | Dial gauge – within OE tolerance |
| Cylinder head flatness | Straight edge + feeler gauge across 6 orientations |
| Coolant passage integrity | Pressure decay test at 3 bar |
| Camshaft bearing bore alignment | CMM inspection – within 0.02 mm |
| Crack detection | 100% dye penetrant inspection (DPI) |
For complete top-end rebuilds, matching head gaskets (4HK1), head bolts (8-98008363-6 family), and valve adjustment shims are also available.
The ISUZU 4HK1 cylinder head assembly 8-98008363-6 (with supersession 8-98018454-5) is an OE-specification replacement for the 5.2L common rail diesel engine in NQR75, NPR5, 700P trucks, and Hitachi/Case excavators. Features 16-valve DOHC design, alloy iron casting, and precision-machined combustion chambers. IATF 16949 certified with batch traceability.
Order a sample unit today to verify fitment on your 4HK1 engine – the same head covers NQR, NPR, FRR, and off-road applications.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Trading Company,Seller
Year Established:
2005
Total Annual:
8000000-10000000
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Yimi(Guangzhou) Automotive Parts Co,Ltd located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality automotiv... Yimi(Guangzhou) Automotive Parts Co,Ltd located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality automotiv...
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