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  • Quality 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 factory
  • Quality 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 factory
  • Quality 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 factory

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

Basic Properties
Place of Origin: China
Brand Name: YIMI
Certification: ISO/TS16949
Model Number: ISUZU NPR66 / NPR71 / NQR70 4HF1 4HG1-T
Trading Properties
Minimum Order Quantity: 20 pcs
Price: Negotiable
Payment Terms: T/T
Supply Ability: 10000 pcs/month
Tags

Isuzu DMAX clutch slave cylinder

4x4 clutch slave cylinder

Isuzu clutch parts with warranty
Specifications
OEM Part Numbers: 8-94339073-1 / 8943390731 / 8-94339073-0 / 8943390730 Part Name: HOSE; VAC PUMP RETURN / Vacuum Pump Return Hose
Inner Diameter: 7/16" (11 Mm) Overall Length: 145 Mm
Center-to-Center Span: 109 Mm Material: Unhardened Vulcanized Rubber
Net Weight: 0.03 Kg H/S Code: 400931000
Engine Compatibility: ISUZU 4HF1, 4HG1-T, 4HG1 Vehicle Compatibility: ISUZU NPR66, NPR71, NQR70, NQR75
Production Years: 1999–2006 Condition: Brand New — 100% Quality Inspected
Warranty: 12 Months
High Light:

ISUZU NPR66 vacuum pump return hose

,

OEM rubber oil return line

,

ISUZU 4HF1 diesel vacuum hose
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
ISUZU Vacuum Pump Return Hose 8-94339073-1 OEM replacement part
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