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{"title":"ISUZU C240 VALVE ROCKER ARM 9126113490","imgUrl":"https:\/\/img.chinax.com\/nimg\/fc\/e5\/2d0d41fb7f3d502843fd768e1e28-200x200-1\/isuzu_c240_valve_rocker_arm_9126113490.jpg","attrs":{"Model Number":"C240","Place of Origin":"Made in China","Minimum Order Quantity":"5 PCS","Supply Ability":"10000pcs\/month"}}
{"title":"ISUZU TFR68 69 ENGINE MOUNTING R 8970391890","imgUrl":"https:\/\/img.chinax.com\/nimg\/7b\/f1\/8998370f517b467e4c20c8df2ac9-200x200-1\/isuzu_tfr68_69_engine_mounting_r_8970391890.jpg","attrs":{"Model Number":"TFR68 69","Place of Origin":"Made in China","Minimum Order Quantity":"5 PCS","Supply Ability":"10000pcs\/month"}}
{"title":"ISUZU TFR68 69 RUBBER ENG FOO L 5876101930 8970860761","imgUrl":"https:\/\/img.chinax.com\/nimg\/68\/26\/7c7f4c50909a3695c90b2db58900-200x200-1\/isuzu_tfr68_69_rubber_eng_foo_l_5876101930_8970860761.jpg","attrs":{"Model Number":"TFR68 69","Place of Origin":"Made in China","Minimum Order Quantity":"5 PCS","Supply Ability":"10000pcs\/month"}}
{"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"}}
ISUZU Crankshaft 8-94339895-0 8943398950 for NPR 4BG1 — OEM Standard Engine Core Component
The ISUZU Crankshaft with OEM numbers 8-94339895-0 / 8943398950 is a precision-engineered replacement designed for ISUZU 4BG1 series diesel engines. This product is a core rotating component of the engine, responsible for converting the reciproing motion of the pistons into rotational motion and transmitting power to the flywheel and drivetrain.
Numbering Note: This product number is 8-94339895-0 / 8943398950, also listed as 894339-8950.
Working Principle
The crankshaft is one of the most heavily loaded components in the engine, connected to the pistons via connecting rods. Its working principle includes:
Power Conversion: During the engine's power stroke, combustion pressure pushes the piston downward, converting reciproing motion into rotational motion through the connecting rod.
Power Output: The crankshaft transmits rotational power through the flywheel to the clutch, transmission, and ultimately to the wheels.
Balance: Counterweights on the crankshaft offset the reciproing inertia of the pistons and connecting rods, reducing engine vibration.
Accessory Drive: The front of the crankshaft drives the timing system, water pump, alternator, A/C compressor, and other accessories via belts/gears.
Failure Symptoms
⚠️ Inspect immediately if any of these occur:
Symptom
Probable Cause
Severe engine vibration, especially at specific RPM ranges
Bent crankshaft or damaged counterweights; loss of dynamic balance
Heavy "knocking" sound from engine (main bearing noise)
Worn main bearing journals; excessive main bearing clearance
Bent crankshaft front end or damaged harmonic balancer
Engine fails to start or suddenly stalls
Broken crankshaft; severe internal engine damage
Product Specifiions
Part Number:
8-94339895-0 8943398950
Product Name:
Crankshaft
Car Model:
NPR
Engine Model:
4BG1
Condition:
100% Brand New
Material:
High-strength aluminum alloy & precision bearings
Quality Standard:
OEM equivalent / ISO quality control
Warranty:
1 year
Vehicle & Engine Compatibility
Primary Vehicle Appliions:
Brand
Model
Chassis
Engine
ISUZU
NPR
NPR
4BG1
ISUZU
NKR
NKR
4BG1
ISUZU
NQR
NQR
4BG1
Features & Benefits
High-Quality Forged Steel/Ductile Cast Iron Material
Excellent fatigue strength and wear resistance for long-term reliable operation under high-speed, high-load conditions.
Precision-Machined Dimensions
Ensures precise fit with main and connecting rod bearings — provides stable rotational support and proper lubriion clearance.
100% Dynamic Balance Tested
Ensures smooth high-speed engine operation; significantly reduces vibration and noise; extends engine service life.
ISO/TS16949 Quality Management Certified
Internationally recognized automotive industry quality standard ensuring full-process quality control.
Important Fitment Warnings
Number Confirmation: Verify the specific number on the engine nameplate before ordering.
Associated Components: When replacing the crankshaft, it is recommended to replace main bearings, connecting rod bearings, and front/rear crankshaft seals simultaneously.
Professional Installation: Crankshaft replacement is a core engine overhaul procedure requiring complete engine disassembly and reassembly. Must be performed by a qualified engine repair technician.
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 ...
