Parts for your 2014 Holden Colorado-Exhaust gasket

2014 Holden Colorado exhaust gasket: fitment, purpose and service tips

Technical sources confirm an exhaust gasket is indeed used on the 2014 Holden Colorado (RG series). The GM Holden RG Colorado Service Manual (Engine Exhaust – Manifold and Turbocharger sections), the Holden/GM Global EPC for RG Colorado, and AU/NZ parts catalogues from ACDelco, Permaseal and Victor Reinz all list exhaust manifold gaskets and exhaust pipe/crush-ring gaskets for the 2.8‑litre turbo‑diesel. That means the exhaust-gasket is relevant and fitted to this model.

On the 2014 Colorado, the exhaust gaskets do the quiet achiever’s job. There’s a multi‑layer steel gasket sealing the exhaust manifold to the cylinder head, and crush gaskets at other joins—such as turbo to downpipe/front pipe and some EGR-related connections—depending on exact variant. Their whole purpose is to keep high‑temperature, high‑pressure exhaust gases inside the system, cutting noise, protecting nearby components, and ensuring the turbo and emissions gear work properly.

There’s no strict time-based replacement interval in the factory schedule, but these gaskets should be inspected during routine servicing—especially on vehicles that tow, see corrugations, or do plenty of cold starts. Look for black sooty marks around flanges, a ticking/choofing sound on cold start that fades as it warms up, a sharp exhaust odour in the engine bay, or a slight drop in boost and fuel economy. Any of those can point to a leak.

If the manifold, turbo, DPF or front pipe is removed, best practice is to fit new gaskets. Reusing crushed or heat-cycled gaskets can invite leaks. Follow the RG Colorado torque specs and tightening sequence from the service manual—usually a staged, centre‑out pattern for the manifold. Don’t add sealant unless the procedure explicitly calls for it, most of these are designed to seal dry. It also pays to check the condition of studs/bolts and replace any that are stretched or corroded, and make sure exhaust hangers are sound so the system doesn’t preload the joints.

Owners who do beach work or water crossings should rinse down and inspect more often—thermal shock and salt can hasten gasket and fastener fatigue. When everything’s buttoned up right, the ute runs quieter, spools cleaner, and keeps heat away from wiring and plastic bits under the bonnet. It’s a small, inexpensive part that makes a big difference to day‑to‑day refinement and reliability.

• Common signs of a failing exhaust gasket:
• Cold-start ticking or puffing at the manifold area
• Soot traces around flange joins
• Exhaust smell in the cabin or engine bay
• Slight loss of boost or economy

Popular questions about 2014 Holden Colorado exhaust gaskets

Where are the exhaust gaskets on a 2014 Colorado?
They’re primarily at the exhaust manifold‑to‑cylinder head interface, plus crush‑ring or flat gaskets at the turbocharger outlet to front pipe and other flange joins. Exact locations vary slightly by engine calibration and emissions hardware, but the manifold gasket is common to all diesel variants.

How often should the exhaust gasket be replaced?
There’s no set kilometre interval. Replace any time the joint is disturbed or if there are signs of leakage. During regular servicing, a quick visual and audio check is enough—if in doubt, new gaskets are cheap insurance.

Is it safe to drive with a leaking exhaust gasket?
It’ll usually still drive, but it’s not ideal. Leaks can let hot gases cook nearby parts, upset turbo response, and in some cases allow fumes to enter the cabin. It’s best to sort it promptly to avoid bigger repair bills.