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{"title":"High-Pressure Injection Pipe 8-97148963-4 8971489634 For ISUZU NPR\/NQR 4HE1 4.8L","imgUrl":"https:\/\/img.chinax.com\/nimg\/40\/f0\/3da290b89fdbadad511c966161f1-200x200-1\/high_pressure_injection_pipe_8_97148963_4_8971489634_for_isuzu_npr_2fnqr_4he1_4_8l.jpg","attrs":{"Model Number":"ISUZU NPR\/NQR 4HE1 4.8L 1998-2004","Cylinder Position":"No. 1 Cylinder","Minimum Order Quantity":"20 pcs","Delivery Time":"5-8 Work Days"}}
{"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"}}
The Injection Pipe No. 1 (PIPE; INJ NO 1) with Genuine ISUZU OEM number 8-97148963-4 (also listed as 8971489634) is a verified direct-fit replacement for the #1 cylinder high-pressure fuel line on ISUZU 4HE1 4.8L diesel engines.
Key Specifications:
Real Shop Test Data: Precision-engineered to exact OEM length, internal diameter, and cone seat geometry
Proven Durability: Constructed from hardened seamless alloy steel capable of withstanding sustained pressures exceeding 20,000 psi
Installation Success Rate:99% direct bolt-on fitment
If your injection pipe is failing, you may experience one or more of the following symptoms:
Diesel Fuel Leaks: Visible fuel seepage or wetness near the #1 injector or along the pipe
Hard Starting: Extended cranking time before the engine starts
Engine Misfire: Rough running or misfiring, especially under load
Loss of Engine Power: Significant reduction in acceleration and overall performance
Strong Diesel Fuel Odor: Noticeable fuel smell in the engine bay or cabin
Visible Damage: Cracks, corrosion, or deformation on the fuel line
⚠️ Safety Warning: A cracked or leaking injection pipe under 20,000+ psi creates a high-pressure fuel spray hazard, immediate fire risk, and cylinder misfire. Prompt replacement is essential for safety and engine performance.
Vehicle & Engine Compatibility
Primary Applications:
Brand
Model
Chassis / Series
Engine
Years
ISUZU
NPR
N-Series
4HE1 4.8L
1998-2004
ISUZU
NQR
N-Series
4HE1 4.8L
1998-2004
ISUZU
NPR-HD
N-Series
4HE1 4.8L
1998-2004
⚠️ Important Compatibility Notes:
This injection pipe is specifically for the #1 cylinder on ISUZU 4HE1 engines
For #2, #3, and #4 cylinder pipes, refer to part numbers 8-97148964-3, 8-97148965-3, and 8-97148966-3 respectively
Please verify your vehicle's chassis code, production year, and engine code before ordering
100% inspection of precision-formed cone seals for metal-to-metal gas-tight sealing
Pressure Test
High-pressure testing to guarantee zero leakage under operating conditions
Corrosion Resistance
Material verification to ensure resistance to fuel corrosion and environmental factors
Final Assembly Inspection
100% visual and dimensional inspection before packaging
Installation & Maintenance Recommendations
⚠️ CRITICAL: Professional Installation Highly Recommended High-pressure injection pipes operate under extreme pressure. ISUZU service manuals explicitly mandate that injection pipes must be replaced with new ones whenever removed — these are single-use components.
Pre-Installation Checklist:
Do not reuse old injection pipes — they are single-use components
Do not bend or modify injection pipes — they are precision-shaped for correct fuel delivery timing and sealing
Depressurize the fuel system before starting work
Clean the area around the injector and injection pipe connections to prevent contamination
Inspect the injector and pump connections for damage — replace if necessary
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 ...