Description
The throttle body coolant hose is a small but essential component in the cooling and fuel management system of the Holden Calais. For models produced between 1995 and 2004, equipped with the 3.8 Litre V6 12-valve engine, the DMH3269–CH3269 throttle body coolant hose is specifically designed to deliver durability, reliability, and an exact fit.
🔧 Product Identification
Part Number: DMH3269–CH3269
Engine Type: 3.8 Litre V6, 12-valve
Vehicle Type: Holden Calais, 4-door sedan (1995–2004)
Primary Function: Transfers coolant through the throttle body to regulate its temperature, ensuring efficient fuel-air mixture and preventing icing
🚗 Vehicle Compatibility
Holden Calais (1995–2004)
Designed for vehicles with the 3.8 Litre V6 engine
Fits factory throttle body and coolant system connections without modification
🛠️ Functional Importance
Provides a sealed pathway for coolant to circulate through the throttle body
Prevents throttle plate icing in cold weather conditions
Helps maintain consistent air-fuel mixture by stabilizing throttle body temperature
Supports overall cooling system efficiency and engine performance
🌡️ Why the Throttle Body Coolant Hose Matters
Engine Efficiency: Ensures proper combustion by keeping throttle body temperature stable
System Balance: Maintains smooth operation of the cooling and intake systems
Performance Stability: Keeps engine running at optimal temperature under varying conditions
Longevity: Reduces wear on throttle body components by avoiding thermal stress
⚙️ Material & Construction
Manufactured from EPDM rubber, resistant to heat, coolant chemicals, and pressure
Reinforced with synthetic fibers for added strength and durability
Flexible enough to accommodate engine vibrations and movement
Designed to withstand repeated thermal cycles without cracking or hardening
🧰 Installation Guidelines
Drain coolant before removing the old throttle body hose
Loosen clamps and detach the worn hose carefully
Fit the DMH3269–CH3269 hose securely onto throttle body and coolant connections
Tighten clamps evenly to prevent leaks
Refill coolant and bleed air from the system to restore circulation
🏆 Key Benefits
Exact Fit: Matches Holden OEM specifications for the V6 engine
Durability: Resistant to cracking, swelling, and hardening over time
Reliability: Reduces risk of sudden cooling system failure
Peace of Mind: Keeps throttle body performance consistent and dependable
🔍 Technical Details
Inner Diameter: Matches factory throttle body and coolant outlets
Length: Precisely measured for Holden Calais engine bay layout
Operating Temperature Range: -40°C to 120°C
Pressure Rating: Suitable for standard cooling system pressures
🛡️ Maintenance Recommendations
Inspect throttle body coolant hoses every 12 months for cracks or bulges
Replace coolant every 2–3 years to prevent chemical degradation
Check clamps for corrosion or looseness
Avoid mixing different coolant types to maintain hose integrity
Keep engine bay clean to reduce external wear on hoses
⚠️ Signs of Wear
Visible cracks or splits along the hose surface
Bulging sections indicating internal weakness
Coolant leaks beneath the vehicle or near throttle body connections
Engine running rough due to inconsistent air-fuel mixture
Hose feels soft or spongy when pressed
📦 Packaging & Availability
Sold individually as a direct replacement hose
Packaged with protective wrapping to prevent damage during shipping
Available through auto parts retailers, online distributors, and Holden specialists
🏁 Value for Holden Calais Owners
Preserves the reliability of Holden’s 3.8 Litre V6 engines
Maintains original cooling and intake performance standards
Protects investment in a premium Holden sedan by preventing costly repairs
Ensures smooth operation for daily driving or long-distance travel
🔧 Tips for Longevity
Replace throttle body coolant hose along with other cooling system hoses for balanced wear
Use new clamps during installation to ensure tight sealing
Monitor coolant levels regularly to detect leaks early
Schedule routine cooling system inspections with other maintenance tasks
Keep an eye on throttle response and idle stability during seasonal changes
📖 Conclusion
The DMH3269–CH3269 throttle body coolant hose is a crucial component for Holden Calais sedans produced between 1995 and 2004 with the 3.8 Litre V6 12-valve engine. By ensuring proper coolant flow through the throttle body, it safeguards engine performance, supports smoother operation, and maintains the overall integrity of the cooling and intake systems. Regular inspection, timely replacement, and proper installation of this hose are essential practices for keeping these Holden vehicles running at their best. For owners who value reliability and authenticity, this throttle body coolant hose is not just a replacement part. It is a key investment in the longevity and performance of their Holden Calais.
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