A Jeep Commander Owner's Guide to Exhaust Manifold Hardware Replacement (2006-2010)
That ticking noise from your engine bay is a common problem, and this guide explains the fix.
- A ticking noise when cold is the primary symptom of broken exhaust manifold bolts, a very common issue on all Commander engines.
- Plan on replacing the exhaust manifold and gasket along with the hardware, as a warped manifold is the likely cause of the failure.
- This is a difficult repair due to the high chance of bolts breaking flush with the cylinder head, requiring expert extraction.
- Using an aftermarket kit from a brand like Motormite (Dorman) can be a cost-effective alternative to OEM parts.
Is Your Jeep Commander Making a Ticking Noise?
If you own a 2006-2010 Jeep Commander, you might hear a distinct ticking or tapping sound coming from the engine, especially when it's cold. This noise often quiets down as the engine warms up. This is a classic sign of a broken exhaust manifold bolt. The constant heating and cooling cycles from the engine can cause the cast iron exhaust manifolds to warp slightly over time. This warping puts immense stress on the mounting bolts, eventually causing one or more of them to break, usually at the front or rear of the cylinder head.
Why This is a Common Problem
This issue is extremely common across all engine options for the Commander, but it is especially well-known on the 5.7L HEMI 🎬 Watch this step-by-step Jeep Commander manifold bolt repair guide., where it's often called the "Hemi Tick". The original factory bolts are prone to snapping under the stress of heat cycles. When a bolt breaks, it creates a small gap that allows exhaust gas to escape, causing the ticking sound.
Symptoms of Failing Exhaust Manifold Hardware
- Ticking Noise: A rhythmic ticking or tapping sound from the engine bay that is loudest on a cold start and may fade as the engine warms.
- Exhaust Smell: You may smell exhaust fumes in the engine bay or even inside the vehicle's cabin.
- Visible Soot: Look for black soot trails on the cylinder head around the exhaust manifold, which indicates a leak.
- Check Engine Light: A significant leak can sometimes affect oxygen sensor readings, potentially triggering a check engine light.
Choosing the Right Aftermarket Hardware Kit
When replacing your exhaust manifold hardware, you have a choice between OEM (Original Equipment Manufacturer) and aftermarket parts. While OEM bolts are the original design, they are also the parts that failed in the first place. Aftermarket brands often provide a more affordable solution.
- Motormite (Dorman): Dorman is a very common aftermarket brand that produces Motormite hardware kits. They are widely available and are often less expensive than OEM. Some forum users have used them without issue, while others express concern about long-term durability compared to OEM. For a known issue like this, sometimes aftermarket companies engineer a part to be stronger than the original.
- Skyward: Skyward is another aftermarket option. While less is known about this specific brand from owner reviews, it provides a cost-effective alternative for the repair.
Pro Tip: Replace More Than Just the Bolts
Since the root cause is often a warped manifold, just replacing the bolts can be a temporary fix. The warped manifold will likely cause the new bolts to break again. Most mechanics recommend replacing the exhaust manifold and the gasket at the same time you replace the hardware for a long-lasting repair. Always use a new gasket when the manifold is removed.
Cost of Replacing Exhaust Manifold Hardware
The cost can vary widely based on how many bolts are broken and if they can be removed easily. The parts themselves are not expensive, but labor can be significant if bolts have broken off flush with the cylinder head and need to be drilled out.
🎬 See how a pro extracts broken bolts from the head.| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Hardware Kit | $42 - $64 |
| New OEM Hardware (per bolt/stud) | $7 - $16 per piece |
| Exhaust Manifold Gasket | $15 - $40 |
| Shop Labor | $250 - $900+ |
| Total Professional Repair | $300 - $1000+ |
*Labor costs increase significantly if broken bolts require extraction.
Frequently Asked Questions (FAQ)
Can I reuse my old exhaust manifold bolts?
No. Exhaust manifold bolts are designed to stretch when torqued and are exposed to extreme heat cycles. They should never be reused. Always install a new hardware kit.
Is this a DIY job?
This is a difficult job for a DIY mechanic. While removing intact bolts is straightforward, there is a very high probability that one or more bolts will snap during removal. Extracting a bolt broken flush with the engine block requires special tools and experience and can be very challenging, especially with limited access in the engine bay.
🎬 Watch this video to understand the common Hemi tick cause.Do I need to replace the exhaust manifold too?
It is highly recommended. The original manifold is likely warped, which is what caused the bolts to break. Installing new bolts with a warped manifold will put them under immediate stress, leading to another failure down the road.
Are there any recalls for this issue?
No, there are no active NHTSA safety recalls for broken exhaust manifold bolts on the 2006-2010 Jeep Commander. The issue is considered a common maintenance problem, not a safety defect by the manufacturer.
Helpful Videos
Technical Specifications
OEM Part Numbers: 06507697AA 06506334AA
Kit typically includes a combination of bolts and studs designed to secure one exhaust manifold to the cylinder head. Material is typically steel or a similar alloy designed for high-heat environments.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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