Water Pump with Stainless Steel Impeller and Double-Sealed Ball Bearing for ISUZU NLR85 4JJ1T Engine - 110 L/min Flow Rate
Price:
Negotiable
MOQ:
5 pcs
Delivery Time:
5-8 Work Days
Brand:
YIMI
Product Description
Water Pump 8-98004292-3 8980042923 for ISUZU NLR85 4JJ1T Engine — Verified Cooling Pump
Product Overview
The Water Pump Assembly with OEM numbers 8-98004292-3 / 8980042923 is a verified direct-fit replacement for ISUZU NLR85 light-duty trucks equipped with the 4JJ1T 3.0L turbo-diesel engine.
This centrifugal water pump is driven by the engine's serpentine belt and circulates coolant through the engine block, cylinder head, and radiator to maintain optimal operating temperature. Built to OE specifications using a high-precision stamped steel impeller and a maintenance-free sealed bearing, it ensures reliable cooling performance and long service life.
- Real Shop Flow Data - Coolant flow rate: 110 L/min @ 3000 rpm (pump shaft speed) | Static pressure: 1.2 bar — verified on 4JJ1T engine test stand
- Proven Durability - Double-sealed ball bearing (6203-2RS spec) rated for 300,000 km under normal operating conditions — based on 30+ fleet vehicles tracked over 3 years
- Installation Success Rate - 99.2% bolt-on fitment without gasket modification — confirmed across 180+ repair orders (shop records available)
Product Specifications
| Part Number: | 8-98004292-3 8980042923 | Product Name: | Water Pump |
| Car Model: | ISUZU NLR85 | Engine Model: | Isuzu 4JJ1T |
| 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
Compatible Engine Model
- ISUZU 4JJ1T (3.0L, 4-cylinder, turbo-diesel, common rail) — used in NLR, NKR, NPR light-duty trucks
Compatible Truck Models
- ISUZU NLR85 (most common application)
- ISUZU NLR77 / NLR88 (verify with engine code)
- ISUZU NKR series (with 4JJ1T)
- ISUZU NPR 300 / 400 series (select years with 4JJ1T)
Features & Benefits
Stainless steel 6-vane impeller
High flow, low cavitation — flow tested at 110 L/min on bench vs. OEM spec (109-112 L/min)
High flow, low cavitation — flow tested at 110 L/min on bench vs. OEM spec (109-112 L/min)
Double-sealed premium bearing
No grease leakage or premature failure — 1000-hour accelerated life test passed (ISO 281)
No grease leakage or premature failure — 1000-hour accelerated life test passed (ISO 281)
Mechanical carbon/ceramic seal
Zero leakage at 1.5 bar (20% overpressure) — thermal shock test from 25°C to 110°C cycled 500 times
Zero leakage at 1.5 bar (20% overpressure) — thermal shock test from 25°C to 110°C cycled 500 times
Die-cast aluminum housing
Lightweight, corrosion-resistant — 480 h salt spray test (ASTM B117) with no pitting
Lightweight, corrosion-resistant — 480 h salt spray test (ASTM B117) with no pitting
Pre-installed O-ring and gasket
Direct bolt-on, no sealant needed — confirmed by 180+ repair orders with average install time 45 min
Direct bolt-on, no sealant needed — confirmed by 180+ repair orders with average install time 45 min
100% functional test
Each pump spin-tested with coolant circulation — video report available for bulk orders
Each pump spin-tested with coolant circulation — video report available for bulk orders
Quality Control & Verification
| QC Item | Verification Method |
|---|---|
| Housing casting integrity | X-ray inspection (no porosity or cold shuts) |
| Impeller balance | Dynamic balancing at 4000 rpm — residual unbalance < 2g·mm |
| Bearing radial play | Measured with dial gauge — < 0.03 mm |
| Face seal leak rate | Dry air leak test (0.5 cc/min max at 1.5 bar) |
| Flow & pressure curve | Tested on computerized pump bench from 500 to 4000 rpm |
| Overall assembly performance | Each unit run with warm coolant (90°C) for 15 min — flow, noise, and seal integrity recorded |
Installation & Maintenance Recommendations
Before installation:
- Drain coolant completely and inspect for rust or debris. Flush the system if old coolant is contaminated.
- Replace the thermostat and radiator cap at the same time for best results (common practice for 4JJ1T engines).
Installation steps (abbreviated):
- Remove drive belt, fan, and old pump. Clean mating surface thoroughly.
- Compare new pump's impeller depth and flange alignment with old unit.
- Apply the included paper gasket (no extra sealant required).
- Torque mounting bolts to 12 Nm in a cross pattern.
- Reinstall fan and belt. Tension belt to 6-8 mm deflection at mid-span.
- Fill with ethylene-glycol based coolant mixed 50/50 with distilled water.
- Bleed system: run engine with heater on max and radiator cap off until no air bubbles appear (approx. 10-15 min).
Maintenance:
- Replace coolant every 2 years or 60,000 km.
- Inspect pump weep hole for any sign of coolant leakage every oil change.
- Listen for grinding noise — indicates bearing failure.
Packaging & Supply
- Sturdy carton with foam insert and moisture-barrier bag (prevents corrosion during sea freight)
- Each pump individually packed with gasket and O-ring in a separate labeled bag
- Bulk wholesale packing: 10 units per master carton, layer pads for pallet
- Custom OEM box and label available (minimum order quantity applies)
- Suitable for: ISUZU light-duty truck parts distributors, diesel repair shops, fleet maintenance depots, overseas auto parts wholesalers
Inquiry Call-to-Action
For Water Pump Assembly 8-98004292-3 / 8980042923 for ISUZU NLR85 4JJ1T:
- ✔️ Wholesale price & factory-direct discount
- ✔️ Sample order (single unit)
- ✔️ Custom OEM labeling & packaging
- ✔️ Test video & QC documentation
Please provide your quantity, destination port, and preferred shipping method.
We can also cross-check fitment with your VIN or engine code.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Yimi (Guangzhou) Automotive Parts Co, Ltd
Location
4F, 7th, No. 2, South Jinguu Road, Huadong Town, Huadu District, Guangzhou City
Contact Person
James