Flex
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Upgrade your 2.8L Duramax-powered Colorado with this high-flow FLEX Monoblock Intercooler – built to handle big boost and harsh Aussie conditions.
This intercooler upgrade is the smart choice for any boosted RG build chasing cooler intake temps, reduced heat soak, and consistent power.
✅ Direct OEM replacement: Uses factory mounting points and pipe locations. No cutting or welding required.
Direct replacement for GM part 94714569. Reuse factory mounting hardware and clamps.
Get the most from your FLEX intercooler:
Generally in stock in Australia – ready for fast dispatch.
⚠️ IMPORTANT: From time to time, dispatch may be up to 2–3 weeks. Contact us for current ETA if timing is critical.
For off-road / competition use only. Intercooler modifications may affect compliance. Check local regulations before purchase.
Q: Is this a true bolt-on upgrade?
A: Yes — designed as a direct replacement for RG Colorado LWN 2.8L. No cutting or welding required when used with factory mounting and pipe locations.
Q: What model years does it fit?
A: Confirmed for 2014–2019 LWN Duramax. Earlier builds (approx. 06/2012–2013) may also fit — confirm by matching GM part number 94714569 or send us your VIN.
Q: Do I need a tune after installing?
A: No tune is required for fitment. Tuned vehicles benefit most from lower IATs and reduced heat soak. Always monitor boost and EGTs.
Q: What boost is it rated for?
A: The FLEX monoblock core is rated to 80 PSI. Final safe boost depends on clamps, piping, turbo setup and tune quality.
Q: Will it work with my existing piping?
A: Yes — designed around OEM routing. Aftermarket piping kits may require minor adjustment.
Q: What's the typical lead time?
A: Generally in stock in Australia, but from time to time item dispatch may be up to 2–3 weeks. Contact us for current ETA if timing is critical.
Q: What's the advantage of monoblock construction?
A: One-piece monoblock casting provides superior strength and reliability under high boost compared to multi-piece designs. Less prone to leaks or failure.
Q: Will this improve my performance?
A: Cooler intake air temps mean denser air charge, which supports more consistent power output, especially on tuned vehicles or under sustained load (towing, highway runs).
Q: Do I need to upgrade my clamps or piping?
A: For high-boost applications (40+ PSI), consider upgrading to quality silicone hoses and heavy-duty T-bolt clamps for maximum reliability.
FLEX monoblock intercooler. 80 PSI rated. Direct bolt-on. Cooler IATs. Reduced heat soak. Built for Aussie conditions.
Disclaimer: Common Rail Cowboys is not affiliated with Holden or General Motors. Installation should be performed by a qualified technician. Proper installation and fitment verification are the buyer's responsibility.
