Vacuum Pump Return Hose 8-94339073-1 8943390731 8-94339073-0 For ISUZU NPR66 / NPR71 / NQR70 4HF1 4HG1-T Diesel — OEM Rubber Oil Return Line
Price:
Negotiable
MOQ:
20 pcs
Delivery Time:
5-8 Work Days
Brand:
YIMI
Product Description
Vacuum Pump Return Hose 8-94339073-1
OEM-grade direct replacement vacuum pump return hose for ISUZU NPR series trucks with 4HF1 and 4HG1-T diesel engines. This critical component returns excess air and oil mist from the vacuum pump back to the crankcase or intake system.
Part Numbers:
8-94339073-1, 8943390731, 8-94339073-0, 8943390730
Inner Diameter:
7/16" (11mm)
Length:
145mm overall, 109mm center span
Material:
Unhardened vulcanized rubber
Weight:
0.03 kg
Failure Symptoms
- Oil leakage from vacuum pump area or along hose path
- Brake booster warning light with soft/spongy brakes
- Squealing or hissing noises from vacuum pump
- Hard brake pedal requiring increased effort
- Visible cracks, hardening, or brittleness
- Oil residue accumulation on hose surface
A failing vacuum pump return hose can lead to oil loss, loss of brake power assist, and potential engine contamination. Prompt replacement is essential for safe brake operation and engine reliability.
Vehicle Compatibility
| Brand | Model | Engine | Years |
|---|---|---|---|
| ISUZU | NPR66 | 4HF1, 4HG1-T | 1999-2006 |
| ISUZU | NPR71 | 4HF1, 4HG1-T | 1998-2002 |
| ISUZU | NQR70 | 4HF1, 4HG1-T | 1999-2004 |
| ISUZU | NQR75 | 4HF1, 4HG1-T | 1998-2004 |
Verify your vehicle's chassis code, production year, and engine code before ordering. Quantity required: 1 per vehicle.
Features & Benefits
OEM Specification
Guarantees factory-fit quality and performance with verified ISUZU OEM part numbers
Precision Dimensions
7/16" inner diameter and 145mm length ensure correct fitment and proper routing
Durable Construction
Unhardened vulcanized rubber provides exceptional resistance to oil, heat, and vibration
Direct Fitment
No modifications required - engineered as direct match for original hose
100% New
Guarantees zero wear, immediate sealing performance, and full service life
Broad Compatibility
Fits multiple ISUZU NPR models with verified OEM cross-reference data
Quality Control
Dimensional Accuracy
Precision inspection to verify all dimensions match OE blueprint specifications
Material Composition
Unhardened vulcanized rubber analysis for oil resistance and thermal stability
Leakage Testing
100% pressure testing to guarantee zero oil or air leakage
Thermal Testing
500+ hour thermal cycling for long-term reliability under extreme temperatures
Installation & Maintenance
Professional Installation Recommended
Pre-Installation Checklist
- Ensure engine is cool before starting work
- Clean area around vacuum pump and return hose
- Inspect vacuum pump outlet and crankcase return port for damage
- Verify new hose dimensions match your original
- Use new hose clamps as recommended
Maintenance Schedule
- Inspection: Every 50,000 km / 12 months
- Replacement: Immediately if failure symptoms appear
- Critical safety component - proactive replacement recommended
Packaging & Supply
Packaging:
Neutral box, color box, or customer brand package
Pack Quantity:
1 PC
Net Weight:
0.03 kg
H/S Code:
400931000
Markets:
Middle East, Asia, Africa, South America, North America & Europe
Similar Products
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
Unit 1313, Building 5, Changsheng DDP Fashion Center, No. 17 Dachi Road, Tancun, Shijing Subdistrict, Baiyun District, Guangzhou City.
Contact Person
James