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{"title":"ISUZU DMAX 4JA1 T H1 GEAR TIMING 52 8979427551","imgUrl":"https:\/\/img.chinax.com\/nimg\/dc\/8f\/faca408a6e5c150d63ac2adb933f-200x200-1\/isuzu_dmax_4ja1_t_h1_gear_timing_52_8979427551.jpg","attrs":{"Model Number":"DMAX 4JA1 T H1","Place of Origin":"Made in China","Minimum Order Quantity":"5 PCS","Supply Ability":"10000pcs\/month"}}
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{"title":"ISUZU NKR KY 4JB1 CRANKSHAFT 8944436620 1005011BBA1","imgUrl":"https:\/\/img.chinax.com\/nimg\/ef\/20\/c9299ee3da59c593a2e0493b8470-200x200-1\/isuzu_nkr_ky_4jb1_crankshaft_8944436620_1005011bba1.jpg","attrs":{"Brand Name":"YIMI","Supply Ability":"10000pcs\/month","Delivery Time":"15-20 days after deposit","Packaging Details":"1, neutral box , 2, color box, 3, customer brand package"}}
The Nozzle Holder Sleeve with OEM number 8-97606661-0 — cross-referencing to 8976066610 / 8-98018462-0 / 8980184620 — is a precision-engineered brass sealing component for the cylinder head of ISUZU 4HK1 and 6HK1 common rail diesel engines. This sleeve creates a sealed passage between the injector nozzle and the combustion chamber, preventing high-pressure combustion gas leakage while blocking coolant from entering the injector bore area.
Function Overview
The nozzle holder sleeve is installed in the injector bore of the cylinder head. Its core functions include: precisely positioning the injector nozzle, sealing the combustion chamber against gas blow-by, isolating the injector from engine coolant, and protecting the injector tip from carbon buildup and corrosion. Manufactured from precision-machined brass, the sleeve offers corrosion resistance and high strength, designed to withstand the extreme conditions of common rail injection systems.
2025 Verifiable Signal Reinforcement
Material & Construction: Precision-machined brass, cylindrical with flared end and threaded interface — corrosion-resistant and high-strength. Material certificate available upon request.
Pressure Rating:200 bar (2,900 PSI) — withstands common rail injection pressures. Based on product specification data.
Temperature Range:-40 °C to 150°C (-40°F to 302°F) — based on product specification data.
Installation Fitment: Direct replacement for OEM sleeve in ISUZU 4HK1 / 6HK1 cylinder head injector bores — installation success rate to be supplemented from actual repair order data.
Abnormal coolant level drop; bubbles or turbulence observed in coolant reservoir
Diesel odor in engine oil or abnormal oil level rise (fuel contaminating oil system)
White smoke from exhaust, reduced engine power, or rough idle
Carbon tracks or discoloration at injector bottom (typical sign of failed copper gasket)
Leakage at nozzle holder sleeve area during cylinder head pressure test
Part Number:
8-97606661-0
Product Name:
Nozzle Holder Sleeve
Car Model:
4HK1 6HK1
Engine Model:
4HK1 6HK1
Condition:
100% Brand New
Size:
Standard
Weight:
Standard
Origin:
China Mainland
Main Market:
Middle East, Asia, Africa, South America, North America & Europe
Package:
Neutral Packing Or Make It As Requested
Material:
High-strength aluminum alloy & precision bearings
Cooling Type:
Engine coolant circulation
Installation:
Direct OEM replacement
Quality Standard:
OEM equivalent / ISO quality control
Vehicle & Engine Compatibility
Brand
Model
Engine
Displacement
Years
ISUZU
NPR
4HK1
5.2L
2005-2010+
ISUZU
NQR
4HK1
5.2L
2005+
ISUZU
NRR
4HK1
5.2L
Verify by VIN
ISUZU
NPR-HD
4HK1
5.2L
2005-2010
ISUZU
FXR
4HK1
5.2L
Verify by VIN
ISUZU
700P
4HK1
5.2L
Verify by VIN
ISUZU
ELF
4HK1 / 6HK1
5.2L / 7.8L
Verify by VIN
ISUZU
FRR
6HK1
7.8L
Verify by VIN
ISUZU
FVR
6HK1
7.8L
Verify by VIN
ISUZU
FVM
6HK1
7.8L
Verify by VIN
Industrial Machinery Applications
Brand
Model
Engine
Hitachi
ZX200-3 / ZX210 / ZX240 ZX Series
4HK1
245GLC / 225DLC / 230GW
4HK1
⚠️ Important: This is an internal engine precision sealing component. Professional repair qualification is required for installation. Please provide VIN or engine serial number before ordering for fitment verification. Simultaneous inspection of the copper gasket (OEM 8-98004187-0 or equivalent) is recommended — typically replaced together with the nozzle holder sleeve.
Features & Benefits
Feature
Benefit + Verification Signal
Precision-machined brass
Corrosion resistance and high strength — long-term resistance to coolant and combustion gas — verify via material test report
200 bar pressure rating
Withstands common rail injection pressures; prevents combustion gas blow-by — based on specification data
-40°C to 150°C temperature range
Performs from cold start to full load conditions — based on specification data
Cylindrical with flared end design
Precise match to cylinder head injector bore; ensures sealing surface contact — verify via CMM dimensional inspection
Direct OEM replacement
No modification required; reduces repair labor — verify via repair order data
Fits 4HK1 / 6HK1 dual platform
Covers mainstream ISUZU medium-duty trucks and construction machinery — verify by VIN / engine number
Quality Control & Verification
QC Item
Verification Method
Dimensional inspection
CMM coordinate measurement against OEM drawing (ID, OD, length)
Material composition
Supplier material certificate / spectral analysis for brass composition
Surface quality
Visual inspection for cracks, burrs, corrosion; sealing surface finish
Thread inspection
Thread gauge inspection of threaded interface
Pressure test
Per supplier hydro/pneumatic seal test report (recommended)
Packaging inspection
Ensure no deformation or damage in transit
⚠️ The above QC items are industry-standard recommendations. Third-party inspection reports or bench test data should be prioritized if available.
Installation & Maintenance Recommendations
⚠️ IMPORTANT: The nozzle holder sleeve is installed inside the cylinder head and involves high-pressure fuel system components. Professional technicians with ISUZU common rail engine repair qualifications are strongly recommended. Always refer to the ISUZU workshop manual before installation.
Installation Guidelines
(Reference workshop manual):
After removing the old sleeve, thoroughly clean the cylinder head bore — free of carbon, corrosion, or residual sealant
Inspect copper gasket seat surface flatness — sealing surface must be perfectly clean; old copper gasket can be hand-lapped with fine compound to clean the seat surface
When installing the new nozzle holder sleeve, ensure the copper gasket at the sleeve bottom is correctly seated
Tighten injector clamp bolts to ISUZU-specified torque — note this is a low-torque specification; do not over-tighten
Perform cylinder head pressure test after installation to confirm no leakage
Recommend simultaneous replacement of copper gaskets and O-rings
Maintenance Schedule
Replace all nozzle holder sleeves when servicing cylinder head or performing valve work
Inspect sleeve sealing immediately if abnormal coolant consumption or oil contamination occurs
Check every 100,000-150,000 km or per engine overhaul interval
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 ... 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 ...