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Exhaust Valve 8-97028706-0 High-Temperature Alloy Stellite-Faced Tip Direct Replacement for Isuzu NPR NKR 4BG1 Engine

Basic Properties
Place of Origin: China
Brand Name: YIMI
Certification: ISO/TS16949
Model Number: ISUZU NPR, NKR
Trading Properties
Minimum Order Quantity: 10 pcs
Price: Negotiable
Payment Terms: T/T,
Supply Ability: 10000 pcs/month
Specifications
Head Diameter: 36-42mm Tip Treatment: Hardened / Stellite-faced
Face Angle: 45° Or 30° Material: High-alloy Heat-resistant Steel (21-4N Or Equivalent)
Stem Surface Roughness: Ra ≤ 0.2 μm Stem Runout: ≤ 0.05mm
Tip Hardness: HRC 50-55 Valve Clearance: 0.35-0.45mm Cold
High Light:

Isuzu NPR NKR exhaust valve

,

high-temperature alloy engine valve

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Stellite-faced exhaust valve replacement

Product Description
Exhaust Valve 8-97028706-0 For Isuzu NPR NKR 4BG1 Engine

Premium-quality direct replacement exhaust valve designed for Isuzu NPR and NKR series medium-duty trucks equipped with the 4BG1 diesel engine.

Product Specifications
Part Number 8-97028706-0, 8970287060
Product Name Exhaust Valve / Engine Exhaust Valve
Car Model ISUZU NPR, NKR
Engine Model ISUZU 4BG1 (Diesel)
Condition 100% Brand New
Material High-strength aluminum alloy & precision bearings
Warranty 6 Months
Function

Exhaust valve opens at the correct time to release burned gases from the combustion chamber. Precision-engineered for high-temperature resistance, ensuring efficient engine breathing and performance for Isuzu 4BG1 diesel engines.

Isuzu Exhaust Valve 8-97028706-0 for 4BG1 Engine
Features & Advantages
  • OE Quality: Manufactured to Isuzu dimensional and material specifications for perfect fit and long service life
  • High-Temperature Alloy: 21-4N or equivalent steel resists oxidation, creep, and thermal fatigue
  • Stellite-Faced Tip: Hardfacing on the valve tip reduces wear from rocker arm contact
  • Precision-Ground Stem: Smooth surface reduces guide wear and ensures proper oil control
  • Hardened Valve Face: Provides durable sealing against the valve seat, preventing gas leakage
  • Restores Engine Performance: Eliminates compression loss, rough idle, and excessive exhaust smoke
  • Direct Replacement: Matches OE length, head diameter, and stem size - no modification required
  • Cost-Effective: Affordable alternative to genuine OEM without compromising quality
Vehicle & Engine Compatibility

This exhaust valve is specifically designed for Isuzu NPR and NKR trucks with 4BG1 engine.

Isuzu Truck Models:
  • ISUZU NPR (NPR59, NPR66, NPR70, etc. with 4BG1)
  • ISUZU NKR (NKR55, NKR57, NKR59, etc. with 4BG1)
  • Other Isuzu medium trucks using the 4BG1 engine - verify
Engine Specification - ISUZU 4BG1:
  • 4-Cylinder, Inline Diesel
  • Displacement: 3.9L (3856cc, similar to 4BD1 but with different injection)
  • Application: NPR, NKR, industrial equipment
Quality Control
  • Material Verification: Alloy composition tested via spectrometer
  • Dimensional Inspection: Head diameter, stem diameter, overall length, and keeper groove position verified against OE blueprints
  • Hardness Testing: Tip hardness (HRC 50-55) and stem hardness checked
  • Surface Finish Inspection: Stem surface roughness measured (Ra ≤ 0.2 μm)
  • Straightness Test: Valve stem runout checked (≤ 0.05mm)
  • Visual Inspection: 100% checked for cracks, burrs, or surface defects
  • Packaged Safely: Valve wrapped in protective plastic or oiled paper, boxed individually or in sets
Packaging and Delivery
  • Neutral export packing or customized packaging available
  • Carton or wooden case for safe transportation
  • Fast delivery for stock items
  • Shipping by Express Air or Sea
Inquiry

For pricing, availability, or bulk purchase of the Exhaust Valve 8-97028706-0 For Isuzu NPR NKR 4BG1 Engine 8970287060 Isuzu Engine Spare Parts, please contact our sales team for a competitive quote and expert technical support.