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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"}}
{"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"}}
{"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 Engine Piston with OEM numbers 8-94340620-2 (also listed as 8943406202, 8-94340-620-2, 8-97176-602-0) is a verified OEM-grade direct replacement for ISUZU 4JB1T 2.8L turbo-diesel engines. As a critical component of the engine's combustion system, this precision-engineered piston transmits combustion force to the connecting rod, seals the combustion chamber, and manages heat transfer to the cylinder walls.
Manufactured to ISUZU's stringent OEM specifications, this piston features an Alfin insert for enhanced ring groove durability and a tin-plated surface for superior scuff resistance during break-in. The 4JB1T engine is a legendary 2.8L turbo-diesel powerplant found in a vast range of ISUZU commercial vehicles, pickup trucks, and SUVs globally.
OEM Specification — Verified by ISUZU OEM part numbers 8-94340-620-2, 8943406202, 8-97176-602-0, and 8-94369-218-0
Alfin Reinforcement — Features an Alfin insert (austenitic cast iron ring carrier) in the top ring groove for exceptional durability
Tin-Plated Surface — Provides excellent scuff resistance during engine break-in and enhanced corrosion protection
Proven Durability — Constructed from high-grade aluminum alloy with Invar strut for controlled thermal expansion
Complete Assembly — Supplied with piston pin and circlips for direct installation
OEM Cross-Reference Verified — Interchangeable with MAHLE 629 12 00, N ÜRAL 87-248000-30, TEIKIN 39188A, and IZUMI piston sets
Failure Symptoms
If your engine piston is failing, you may experience one or more of the following symptoms:
Engine Knocking Noise: A deep, metallic knocking or rattling sound from the engine block, especially under load
Excessive Oil Consumption: Noticeable drop in oil level between service intervals
Blue Exhaust Smoke: Bluish smoke from the exhaust, especially during acceleration
Loss of Engine Power: Significant reduction in power and acceleration
Engine Misfire: Rough running or misfiring
Metal Shavings in Oil: Visible metallic particles in the engine oil during servicing
Cylinder Wall Scoring: Vertical scratches on cylinder walls
⚠️ A failing piston is a critical engine failure risk — it can lead to catastrophic engine damage including cracked pistons, bent connecting rods, and cylinder wall destruction. Prompt replacement with quality OEM pistons is essential for engine reliability.
Part Number
8-94340-620-2 8943406202 8-97176-602-0
Product Name
Piston
Car Model
ISUZU
Engine Model
ISUZU 4JB1T
Condition
100% Brand New
Size
Standard
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
Vehicle & Engine Compatibility
⚠️ CRITICAL: This piston is designed for ISUZU 4JB1T 2.8L turbo-diesel engines. Verify your engine code and bore size before ordering.
Primary Applications
Brand
Model
Chassis / Series
Engine
Years
ISUZU
Bighorn
UBS
4JB1T 2.8 TD
1987-1991
ISUZU
Mu / Wizard
--
4JB1T 2.8 TD
1989-1998
ISUZU
Rodeo
TF
4JB1T 2.8 TD
1988-2002
ISUZU
Trooper
UBS
4JB1T 2.8 TD
1987-1991
ISUZU
Pickup
TFR/TFS
4JB1T 2.8 TD
1988-2005
ISUZU
NKR
N-Series
4JB1T
1988-2005
ISUZU
NPR
N-Series
4JB1T
1988-2005
ISUZU
Elf
N-Series
4JB1T
1988-2005
Engine Specifications (4JB1T)
Specification
Detail
Engine Type
In-line, 4-cylinder, Direct Injection, Turbocharged, Water-Cooled
Displacement
2.771 L (2,771 cc)
Bore × Stroke
93 mm × 102 mm
Power Output
68-85 kW (92-116 HP) @ 3,600 rpm
Peak Torque
230-290 N*m @ 1,600-1,900 rpm
Idle Speed
750 ± 25 rpm
Max Speed
3,350 ± 100 rpm
Features & Benefits
OEM Specification — ISUZU Genuine Equivalent
Guarantees factory-fit quality and performance — verified by ISUZU OEM part numbers
Alfin Insert Reinforcement
Provides exceptional durability in the top ring groove, resisting wear under high combustion pressures
Invar Strut Design
Controls thermal expansion for consistent piston-to-cylinder clearance across operating temperatures
Tin-Plated Surface
Delivers superior scuff resistance during engine break-in and enhanced corrosion protection
Precision 93mm STD Bore
Matches the 4JB1T cylinder bore for correct fitment and compression
Complete with Pin & Clips
Supplied ready for installation — includes piston pin and circlips
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 ...
