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Cylinder Head Gasket 8-97349485-0 8973494850 For ISUZU NQR66 4HF1 Diesel Engine
Premium-quality cylinder head gasket designed specifically for ISUZU NQR66 series medium-duty trucks equipped with 4HF1 diesel engines. This precision-engineered component creates a reliable seal between the cylinder head and engine block.
Part Number
8-97349485-0, 8973494850
Product Name
Cylinder Head Gasket / Head Gasket / GASKET; CYL HD
Car Model
ISUZU NQR66 (also NK, NP model as applicable)
Engine Model
ISUZU 4HF1 (4.3L) Diesel Engine
Condition
100% Brand New
Origin
China Mainland
Warranty
6 Months
Features & Advantages
OE Quality: Manufactured to strict ISUZU dimensional and material specifications for perfect fit and function
High-Strength Construction: Multi-layer steel or composite material withstands extreme combustion pressures and temperatures
Precision Sealing Beads: Engineered beads and fire rings ensure a tight, leak-free seal around combustion chambers and fluid passages
Exact Port Alignment: Precise die-cutting guarantees correct alignment with all oil, coolant, and combustion ports
Restores Compression: Eliminates compression loss, overheating, and coolant leaks caused by a blown head gasket
Direct Replacement: Matches OE gasket dimensions and sealing configuration
Long Service Life: Engineered for heavy-duty commercial diesel engine applications
Reliable Performance: Ensures proper sealing for efficient combustion and engine reliability
Vehicle & Engine Compatibility
This cylinder head gasket is specifically designed for ISUZU medium-duty trucks and commercial vehicles:
ISUZU NQR66 (Medium-Duty Trucks)
ISUZU N Series (NK, NP - as applicable)
ISUZU 4HF1 Engine Specifications:
4-Cylinder, Inline Diesel
Displacement: 4.3L
Valvetrain: OHV
Application: Medium-duty trucks and commercial vehicles
Installation Notes
Professional engine builder or mechanic installation is strongly recommended.
Ensure engine is cool - Allow the engine to cool completely before disassembly
Disconnect battery - Always disconnect the negative terminal before working
Drain coolant and oil - Drain the cooling system and engine oil to prevent spills
Remove the cylinder head - Disconnect manifolds, timing components, and head bolts; lift the cylinder head off the block
Clean all mating surfaces - Thoroughly clean the cylinder head and block decks; remove all old gasket material, oil, and debris
Check surface flatness - Inspect both surfaces for warpage using a straightedge; resurface if necessary
Install new head gasket - Position the new gasket on the block deck with the correct orientation (usually marked "TOP" or "FRONT")
Install cylinder head - Carefully position the cylinder head on the gasket; align with dowel pins
Use new head bolts - If torque-to-yield (TTY) head bolts are specified, always use new bolts
Torque in sequence - Tighten head bolts in the correct sequence and stages per manufacturer specifications
Reassemble engine - Reinstall manifolds, timing components, and other removed parts
Refill fluids - Fill with correct engine oil and coolant mixture (50/50 antifreeze/water)
Bleed cooling system - Start engine and bleed air from the cooling system per manufacturer procedure
Check for leaks - Inspect for oil or coolant leaks around the cylinder head area
Road test - Test drive to verify proper engine operation and no overheating
Quality Control
Material Verification: Confirms gasket material meets ISUZU temperature, pressure, and fluid resistance specifications
Dimensional Inspection: Gasket bore size, thickness, bolt hole locations, and port openings verified within OEM tolerances
Pressure Testing: Sample tested to ensure proper sealing under combustion pressure and fluid pressure
Visual Inspection: 100% checked for defects, cuts, or manufacturing flaws
Packaged Safely: Protected and packaged to prevent damage during transit
Packaging and Delivery
Neutral export packing or customized packaging available
Carton or wooden case for safe transportation
Fast delivery for stock items
Shipping by Express Air or Sea
Inquiry
For pricing, availability, or bulk purchase of the Cylinder Head Gasket 8-97349485-0 8973494850 For ISUZU NQR66 4HF1 Diesel Engine, please contact our sales team for a competitive quote and expert technical support.
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 ...
