Yimi (Guangzhou) Automotive Parts Co, Ltd
| Payment Terms | T/T,Western Union |
| Supply Ability | 10000 pcs/month |
| Delivery Time | 5-8 Work Days |
| Packaging Details | Neutral Package or as customers’ request |
| Part Numbers | 8-97033175-0, 8970331750, 8-97385984-0, 8973859840 |
| Engine Compatibility | ISUZU 4JB1 (2.8L Diesel), 4JB1-T (Turbo), 4JA1 (2.5L), 4JH1 (3.0L), 4JG2 (3.1L) |
| Pressure Relief Valve | Integrated, calibrated to 3.5–4.5 bar / 50–65 psi |
| Material | High-strength cast iron / precision-machined aluminium housing, hardened steel gears |
| Pump Type | Gear-type oil pump |
| Drive Mechanism | Chain-driven from crankshaft |
| Flow Rate | 2.5 L/min at idle, 4.0 L/min at 2,000 rpm, 6.5 L/min at rated speed |
| Operating Pressure | 4.5–5.0 bar / 65–72 psi |
| Brand Name | YIMI |
| Model Number | ISUZU 4JB1 NKR55 |
| Certification | ISO/TS16949 |
| Place of Origin | China |
View Detail Information
Explore similar products
ISUZU 700P 4HG1T 4HK1T TIMING GEAR 8971200050 1005220-P301
ISUZU NPR 4HG1 TURBO CHARGER ASM 8973267520 704136-0003 8972083520
Durable Isuzu Cars Parts FVR32 6HE1 Gasket Cylinder Head 8943963341
BL0CK ASM CYL NPR 4HG1 4HG1-T 4HF1 8982045330
Product Specification
| Payment Terms | T/T,Western Union | Supply Ability | 10000 pcs/month |
| Delivery Time | 5-8 Work Days | Packaging Details | Neutral Package or as customers’ request |
| Part Numbers | 8-97033175-0, 8970331750, 8-97385984-0, 8973859840 | Engine Compatibility | ISUZU 4JB1 (2.8L Diesel), 4JB1-T (Turbo), 4JA1 (2.5L), 4JH1 (3.0L), 4JG2 (3.1L) |
| Pressure Relief Valve | Integrated, calibrated to 3.5–4.5 bar / 50–65 psi | Material | High-strength cast iron / precision-machined aluminium housing, hardened steel gears |
| Pump Type | Gear-type oil pump | Drive Mechanism | Chain-driven from crankshaft |
| Flow Rate | 2.5 L/min at idle, 4.0 L/min at 2,000 rpm, 6.5 L/min at rated speed | Operating Pressure | 4.5–5.0 bar / 65–72 psi |
| Brand Name | YIMI | Model Number | ISUZU 4JB1 NKR55 |
| Certification | ISO/TS16949 | Place of Origin | China |
| High Light | ISUZU 4JB1 oil pump assembly ，OE replacement oil pump with hardened steel gears ，chain-driven ISUZU truck oil pump | ||
The engine oil pump pressurizes and circulates lubricating oil to critical moving parts (crankshaft, camshaft, bearings, piston cooling jets). It maintains stable oil pressure across all engine speeds, preventing metal-to-metal contact and ensuring long-term engine reliability.
The Engine Oil Pump Assembly (OEM Numbers: 8-97033175-0, 8-97385984-0 / 8970331750, 8973859840) is a premium-quality, direct replacement lubrication component engineered specifically for the legendary ISUZU 4JB1 2.8L diesel engine, the workhorse found in ISUZU NKR55, NKR58, NHR, NPR, 100P, ELF series light trucks, as well as TFR/TF pickups, D‑MAX (early), JMC (Jiangling) JX493, Hitachi EX/ZAXIS, Kobelco SK, Kato HD series and industrial applications.
| Part Number: | 8-97033175-0 8973859840 | Product Name: | Oil Pump |
| Car Model: | ISUZU NKR55 | Engine Model: | ISUZU 4JB1 |
| 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 |
| Symptom | Likely Cause | Action |
|---|---|---|
| Low oil pressure warning light flickers at idle | Worn pump gears or pressure relief valve stuck open | Check pressure with mechanical gauge; replace pump if pressure is below spec |
| Engine knocking (bottom-end noise) under load | Oil starvation to main/rod bearings due to low pump output | Immediate pump replacement; inspect bearings for damage |
| Fluctuating oil pressure on dash gauge / scanner | Internal gear wear or erratic relief valve operation | Replace oil pump and verify oil pressure with manual gauge |
| Metal particles in oil filter / sump | Pump gear tooth wear or scoring on housing bore | Replace pump, flush oil system, and replace oil cooler |
| No oil pressure at idle (0 psi on gauge) | Pump drive failure or seized pump | Do not start engine — inspect drive components, replace pump |
| Valvetrain noise (ticking, clatter) | Insufficient oil delivery to camshaft and lifters | Verify oil pressure; replace pump if low |
For pricing, availability, or bulk purchase of the ISUZU Oil Pump Assembly 8-97033175-0 (8970331750 / 8973859840) for 4JB1, 4JA1, 4JH1, 4JG2 engines, and compatible NKR55, NHR, NPR, TFR, D‑MAX, Hitachi EX, Kobelco SK, JMC JX493 applications, including 4JB1‑T (turbo) and 4JB1‑NA (naturally aspirated) variants, please contact our sales team for a competitive wholesale quote and expert technical support. We respond to all inquiries within 24 hours.
Company Details
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 automotiv... 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 automotiv...
Get in touch with us
Leave a Message, we will call you back quickly!