Description
The DMH3619-CH3619 throttle body coolant hose is a precision replacement part designed for the Holden Jackaroo, Holden Rodeo, and Isuzu Rodeo models manufactured between 1988 and 1998. Specifically engineered for 2-door and 4-door variants equipped with the 2.6-litre inline-4 8-valve engine, this hose ensures reliable coolant circulation through the throttle body. By maintaining proper temperature regulation, it prevents overheating, supports smooth throttle operation, and contributes to overall engine efficiency.
🔧 Key Features
OEM Fitment
Exact compatibility with Holden Jackaroo, Holden Rodeo, and Isuzu Rodeo (1988–1998).
Designed for 2.6L I4 8V engines.
Fits seamlessly in both 2-door and 4-door configurations.
Molded to match factory routing for straightforward installation.
Durable Construction
Made from reinforced EPDM rubber for superior resistance to heat and chemicals.
Withstands operating temperatures up to 150°C.
Flexible enough to absorb vibration and engine movement.
Resistant to cracking, swelling, and hardening over time.
Reliable Performance
Provides leak-free coolant transfer to the throttle body.
Ensures consistent throttle body temperature regulation.
Supports overall cooling system efficiency and engine longevity.
🛠️ Installation Guide
Step-by-Step Process
Allow the engine to cool completely before starting.
Drain coolant into a container to prevent spills.
Remove the old throttle body hose by loosening clamps.
Fit the DMH3619-CH3619 hose in place, aligning with factory routing.
Secure with clamps and refill coolant.
Bleed the system to remove air pockets.
Check for leaks and test throttle body function.
Tools required: Screwdrivers, pliers, drain pan, coolant, replacement clamps.
🚨 Signs Your Throttle Body Coolant Hose Needs Replacement
Coolant leaks near the throttle body.
Visible cracks or bulges on the hose surface.
Soft or spongy texture when squeezed.
Engine overheating despite proper coolant levels.
Erratic idle or performance caused by improper temperature regulation.
🛒 Availability
The DMH3619-CH3619 throttle body coolant hose can be purchased from:
Holden and Isuzu parts distributors.
Auto parts retailers (local and online).
Specialized suppliers for Jackaroo and Rodeo components.
🧊 Maintenance Tips
Inspect hoses every 12 months or 20,000 km.
Replace hoses every 4–5 years or sooner if wear is detected.
Use OEM-approved coolant to extend hose life.
Check clamps regularly for corrosion or looseness.
✅ Conclusion
The DMH3619-CH3619 throttle body coolant hose is a dependable replacement for Holden Jackaroo, Holden Rodeo, and Isuzu Rodeo models (1988–1998, 2/4-door, 2.6L I4 8V engines). With its OEM fitment, durable EPDM construction, and reliable performance, it ensures proper coolant circulation and stable throttle body temperatures. Timely replacement of worn hoses prevents leaks, overheating, and costly engine damage, keeping your vehicle running smoothly and efficiently.
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