OEM Vacuum Pump Return Hose 8-94339073-1 8943390731 8-94339073-0 For ISUZU NPR66 / NPR71 / NQR70 / NQR75 4HF1 4HG1-T Diesel — Rubber Oil Return Line
Price:
Negotiable
MOQ:
20 pcs
Delivery Time:
5-8 Work Days
Brand:
YIMI
Product Description
OEM Vacuum Pump Return Hose 8-94339073-1 8943390731 8-94339073-0
Product Overview
The Vacuum Pump Return Hose with OEM numbers 8-94339073-1 (also listed as 8943390731, 8-94339073-0, 8943390730) is a verified OEM-grade direct replacement for ISUZU NPR series trucks equipped with the 4HF1 and 4HG1-T diesel engines.
Important Cross-Reference Note: Part numbers 8-94339073-0, 8-94339073-1, 8-94339073-3, and 8-94339073-4 are all related to the same vacuum pump return hose assembly. The -1 suffix represents the current production revision and is interchangeable with the -0 and -3 variants.
Technical Specifications
Part Number:
8-94339073-1 8943390731 8-94339073-0
Car Model:
ISUZU NPR66 / NPR71 / NQR70 / NQR75
Engine Model:
ISUZU 4HF1 4HG1-T
Inner Diameter:
7/16" (11mm)
Overall Length:
145mm
Center-to-Center Span:
109mm
Material:
Unhardened vulcanized rubber
Condition:
100% Brand New
Failure Symptoms
- Oil Leakage: Oil seepage or dripping from vacuum pump area
- Brake Booster Warning Light: Dashboard warning with soft/spongy brakes
- Squealing or Hissing Noise: Unusual noises from vacuum pump area
- Hard Brake Pedal: Increased pedal effort required
- Visible Cracks or Hardening: Brittle or degraded rubber appearance
- Oil Residue on Hose: Visible oil mist accumulation on exterior
Warning: 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 | Chassis / Series | Engine | Years |
|---|---|---|---|---|
| ISUZU | NPR66 | N-Series | 4HF1, 4HG1-T | 1999-2006 |
| ISUZU | NPR71 | N-Series | 4HF1, 4HG1-T | 1998-2002 |
| ISUZU | NQR70 | N-Series | 4HF1, 4HG1-T | 1999-2004 |
| ISUZU | NQR75 | N-Series | 4HF1, 4HG1-T | 1998-2004 |
Critical: 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
Broad Compatibility
Fits multiple ISUZU NPR models with 4HF1 and 4HG1-T engines
100% New
Guarantees zero wear, immediate sealing performance, and full service life
Quality Control
| QC Item | Verification Method |
|---|---|
| Dimensional Accuracy | Precision inspection to verify 7/16" inner diameter, 145mm length, and 109mm center span |
| Material Composition | Unhardened vulcanized rubber analysis for oil resistance and thermal stability |
| Leakage Test | 100% pressure testing for zero oil or air leakage |
| Oil Resistance Test | Extended exposure to hot engine oil for material integrity verification |
| Thermal Cycle Test | 500+ hour thermal cycling for long-term reliability |
| Final Assembly Inspection | 100% visual and dimensional inspection before packaging |
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 original
- Use new hose clamps as recommended
Maintenance Schedule:
- Inspection: Every 50,000 km / 12 months
- Replacement: Immediately if failure symptoms appear
- Note: Critical safety component - proactive replacement recommended
Packaging & Supply
Packaging:
Neutral box, color box, or custom branding
Pack Quantity:
1 PC
Net Weight:
Approx. 0.2 kg
H/S Code:
400931000
Suitable For:
Wholesale distributors, truck parts retailers, repair shops, fleet owners
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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
Unit 1313, Building 5, Changsheng DDP Fashion Center, No. 17 Dachi Road, Tancun, Shijing Subdistrict, Baiyun District, Guangzhou City.
Contact Person
James