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{"title":"ISUZU NHR 4JA1 DMAX CRANKSHAFT 8944552401","imgUrl":"https:\/\/img.chinax.com\/nimg\/e2\/3f\/ae38ad12211136e0e8ec331c8536-200x200-1\/isuzu_nhr_4ja1_dmax_crankshaft_8944552401.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"}}
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ISUZU 6WF1 Euro3 CYZ Cylinder Liner Kit 1878129280 1-87812928-0 — Verified OEM Fit for GIGA CYZ/CXZ/EXZ Diesel Engine
Product Overview
The Cylinder Liner Kit with OEM numbers 1878129280 and 1-87812928-0 is a verified direct-fit replacement for ISUZU 6WF1 / 6WF1-TC / 6WF1-TCC Euro3 diesel engines, commonly installed in ISUZU GIGA CYZ, CXZ, EXZ and related heavy-duty truck chassis. Each kit includes one cylinder liner, one piston, one 4-ring set, one piston pin, and snap rings. It is designed for engine overhaul and cylinder bore restoration.
Working Principle
The cylinder liner is a critical wear component of the diesel engine block. In the 6WF1 engine, it uses a wet liner design: the outer wall contacts engine coolant directly, while the inner bore guides the piston and forms the combustion seal. The liner must withstand peak combustion pressures above 180 bar, transfer heat to the cooling system, and provide a durable sliding surface for the piston rings. The bore is plateau honed to create micro-oil retention, reducing friction and extending piston ring life.
Failure Symptoms
Replace the liner kit when any of these symptoms appear:
Excessive oil consumption / blue smoke — worn liner-to-ring clearance allows oil into the combustion chamber.
Power loss — poor cylinder sealing causes low compression and weak acceleration.
Abnormal knocking noise — heavy metallic knock from idle to mid-speed, sometimes with black smoke.
Hard starting or no-start — low compression makes cold starts difficult.
Cylinder scoring / scuffing — foreign objects or snapped snap rings can scratch the liner bore.
Technical Specifications
Verification Item
Data / Standard
Source / Method
Liner Inner Diameter
147 mm
CMM inspection, 100% piece-by-piece
Liner Height
267 mm
CMM inspection
Liner Outer Diameter
151.6 mm
CMM inspection
Flange / Shoulder Diameter
158.25 mm
CMM inspection
Piston Pin Size
104 * 56 mm
Bench dimension verification
Connecting Rod Bushing
56 mm
Bench dimension verification
Liner Material
Centrifugal cast alloy iron
Material certificate + metallographic analysis
Hardness
HB 210–250
Brinell hardness sampling
Plateau Honing
100% full inspection
Bore profilometer
Installation Success Rate
≥ 99%
Based on repair order tracking over the last 3 years
Certification
ISO/TS 16949
Third-party system audit
OEM Cross-Reference
Type
Number
Primary OEM — Short
1878129280
Primary OEM — Long
1-87812928-0
Consecutive / Replacement
1-87812928-1 to 1-87812928-6
Consecutive / Replacement
1878129281 to 1878129286
Higher Index
1878129290 to 1878129296
Liner Only — Non-Kit
1112613792 / 1112613332
Competitive Cross-Reference
QML MV1931, JIPL-2984, etc.
Part Number:
1878129280 1-87812928-0
Product Name:
Euro3 Cylinder Liner Kit
Car Model:
6WF1
Engine Model:
6WF1
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
Primary Applications
Brand
Model
Chassis
Engine
Years
ISUZU
GIGA
CYZ51
6WF1-T
1999–2007
ISUZU
GIGA
CXZ51
6WF1-T
2000–2008
ISUZU
GIGA
CXY51
6WF1-T
2000–2008
ISUZU
GIGA
EXZ51
6WF1-TC
2003–2008
ISUZU
GIGA
CYH / EXR
6WF1 Series
1999–2008
ISUZU
Concrete Mixer
CYZ / CYH
6WF1-TC
2000–2008
⚠️ Important Fitment Notes:
6WF1 cylinder liners are classified by inner diameter grade such as 1X, 2X, 3X. Measure the cylinder block seat bore before installation and select the matching liner grade. Incorrect grade can cause abnormal liner protrusion or distortion.
After pressing the liner in, measure liner protrusion with a dial indicator. Incorrect protrusion can cause head gasket failure or early liner cracking.
For right-hand drive (RHD) vehicles, installation space may be limited. Confirm the specific procedure in the workshop manual.
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 ...