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Yimi (Guangzhou) Automotive Parts Co, Ltd

  • China,Guangzhou
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China ISUZU NPR59 4BD1 Cylinder Head Gasket OEM Fit Multi-Layer Steel 102 mm Bore
China ISUZU NPR59 4BD1 Cylinder Head Gasket OEM Fit Multi-Layer Steel 102 mm Bore

  1. China ISUZU NPR59 4BD1 Cylinder Head Gasket OEM Fit Multi-Layer Steel 102 mm Bore

ISUZU NPR59 4BD1 Cylinder Head Gasket OEM Fit Multi-Layer Steel 102 mm Bore

  1. MOQ: 20 PCS
  2. Price: Negotiable
  3. Get Latest Price
Temperature Range −60°C to +180°C
Packaging Details Neutral Package or as customers’ request
Gasket Bore Diameter 102 mm
Payment Terms T/T
Cylinder Head Bolt Torque (Step 2) 9.5 kg·m (93.2 N·m / 68.7 lb·ft)
Delivery Time 5-8 Work Days
Cylinder Head Bolt Torque (Step 3) 11.5 kg·m (112.8 N·m / 83.2 lb·ft)
Material Metal / Graphite / Stainless Steel
Net Weight 0.65 kg
Supply Ability 10000 pcs/month
Engine Displacement 3,268 cc (4BC2) / 3,856 cc (4BD1)
Cylinder Head Bolt Torque (Step 1) 6.0 kg·m (58.8 N·m / 43.4 lb·ft)
Model Number NPR59 4BD1
Certification ISO/TS16949
Brand Name YIMI
Place of Origin CHINA

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  1. Product Details
  2. Company Details

Product Specification

Temperature Range −60°C to +180°C Packaging Details Neutral Package or as customers’ request
Gasket Bore Diameter 102 mm Payment Terms T/T
Cylinder Head Bolt Torque (Step 2) 9.5 kg·m (93.2 N·m / 68.7 lb·ft) Delivery Time 5-8 Work Days
Cylinder Head Bolt Torque (Step 3) 11.5 kg·m (112.8 N·m / 83.2 lb·ft) Material Metal / Graphite / Stainless Steel
Net Weight 0.65 kg Supply Ability 10000 pcs/month
Engine Displacement 3,268 cc (4BC2) / 3,856 cc (4BD1) Cylinder Head Bolt Torque (Step 1) 6.0 kg·m (58.8 N·m / 43.4 lb·ft)
Model Number NPR59 4BD1 Certification ISO/TS16949
Brand Name YIMI Place of Origin CHINA
High Light OEM Fit Cylinder Head Gasket ,Multi-Layer Steel Head Gasket ,102 mm Bore Engine Gasket
ISUZU NPR59 4BD1 Cylinder Head Gasket 8-94145839-0 8941458390 OEM Fit
Product Overview

Cylinder Head Gasket 8-94145839-0 8941458390 for ISUZU NPR59 ELF 350 4BD1 4BD1T 3.9L — Verified OEM Fit Multi-Layer Steel Head Gasket

This cylinder head gasket is a critical sealing component for the engine combustion chamber, responsible for maintaining compression, separating coolant and oil passages, and ensuring reliable engine performance under all operating conditions.

Working Principle

The cylinder head gasket is compressed between the engine block and cylinder head, forming a critical seal for the combustion chamber. It must withstand combustion pressures exceeding 160 bar while simultaneously sealing coolant passages and oil galleries.

The ISUZU 4BD1 is a 3.9L inline-four direct-injection diesel engine produced from 1980 onwards, widely used in ISUZU ELF/NPR trucks, buses, forklifts, and Hitachi excavators. These engines are known for exceptional durability, routinely exceeding 500,000 km in commercial service with proper maintenance.

Failure Symptoms
  • Coolant or oil seepage at the cylinder head joint
  • Compression loss between cylinders
  • Exhaust gas bubbles in the radiator
  • Oil contamination with coolant or vice versa
  • Overheating
Critical Inspection Note: ISUZU service manuals require that the cylinder head gasket be replaced, never reused, whenever the cylinder head is removed. Always use new head bolts and follow the workshop manual torque sequence precisely.
Technical Specifications
Specification Value
Part Number (Short) 8-94145839-0
Part Number (Long) 8941458390
Engine Compatibility 4BD1 / 4BD1T / 4BC2 (3.3L–3.9L)
Gasket Bore Diameter 102 mm
Material Metal / Graphite / Stainless Steel
Temperature Range −60°C to +180°C
Net Weight 0.65 kg
Certification ISO/TS 16949
Torque Specifications
Step Torque Value
Step 1 6.0 kg·m (58.8 N·m / 43.4 lb·ft)
Step 2 9.5 kg·m (93.2 N·m / 68.7 lb·ft)
Step 3 11.5 kg·m (112.8 N·m / 83.2 lb·ft)
OEM Cross-Reference
Type Number
Primary OEM — Short 8-94145839-0
Primary OEM — Long 8941458390
Consecutive / Replacement 8-94145839-1 / 8941458391
Consecutive / Replacement 8-94145839-6 / 8941458396
ISUZU NPR59 4BD1 Cylinder Head Gasket 8-94145839-0
Vehicle & Engine Compatibility

Primary Applications:

Brand Model Engine Years
ISUZU ELF 350 4BD1 1985–1993
ISUZU ELF 250 4BD1 / 4BC2 1982–1993
ISUZU NPR 4BD1 / 4BD1T 1986–1993

Non-ISUZU Applications:

  • Hitachi EX100 / EX100-2 / EX100-3 Excavator
  • Hitachi EX120 / EX120-2 / EX120-3 Excavator
  • Hitachi EX150 / EX90 / EX90-2 Excavator
  • JCB Construction Equipment
Important Fitment Notes: This head gasket is designed for the 102 mm bore 4BD1 / 4BD1T / 4BC2 engine family. The 8-94145839-1 suffix is the current production replacement for the -0 version. The 8-94145839-6 suffix is used for the 4BD1T turbocharged variant.
Features & Benefits
Multi-Layer Steel / Graphite Construction
Superior sealing under high combustion pressures and thermal cycling
102 mm Bore Compatibility
Precision-matched to the 4BD1 / 4BD1T / 4BC2 cylinder bore
High-Temperature Resistant Materials
Withstands extreme temperatures (−60°C to +180°C)
OEM-Exact Fitment
Direct replacement without modification
Installation Guidelines
  1. Remove the engine from the vehicle or position it for top-end access
  2. Remove cylinder head bolts in reverse of tightening sequence
  3. Check cylinder head and block decks for flatness
  4. Place new head gasket with TOP mark facing up and FRONT mark forward
  5. Lower cylinder head onto gasket and lubricate new head bolt threads
  6. Follow specified torque sequence in three steps
  7. Install remaining gaskets and seals
  8. Reconnect all components and refill fluids
Maintenance Schedule
  • Every 5,000–10,000 km: Change engine oil and filter
  • Every 40,000–50,000 km: Inspect for oil or coolant leaks
  • Every 100,000 km: Perform compression test
  • When overheating occurs: Inspect head gasket immediately
  • At engine overhaul: Always replace head gasket and cylinder head bolts

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • 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 ... 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 ...

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  • Yimi (Guangzhou) Automotive Parts Co, Ltd
  • Unit 1313, Building 5, Changsheng DDP Fashion Center, No. 17 Dachi Road, Tancun, Shijing Subdistrict, Baiyun District, Guangzhou City.
  • https://www.isuzucarsparts.com/

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