Exhaust Manifold Gasket Set Guide for 2012-2021 Jeep Grand Cherokee
Hearing a ticking noise from your Grand Cherokee's engine? It might be a leaking exhaust gasket, a common issue you can fix.
- A ticking noise when cold is the classic symptom of a leaking exhaust manifold gasket, usually caused by broken bolts.
- Always replace the exhaust manifold bolts and studs with the gaskets; they are the primary point of failure.
- Inspect the exhaust manifold for warpage before installing a new gasket to ensure a lasting repair.
- This repair is difficult for DIYers mainly due to the high chance of breaking bolts off in the cylinder head.
Is Your Grand Cherokee Making a Ticking Noise?
A ticking or tapping sound, especially when the engine is cold, is the most common sign of a failing exhaust manifold gasket on a 2012-2021 Jeep Grand Cherokee. This is particularly well-known on models with the 5.7L HEMI V8, where it's often called the "Hemi tick." 🎬 Watch: See why this common Hemi tick happens and how to fix it. This noise happens because the constant heating and cooling cycles cause the factory exhaust manifold bolts to break. When a bolt snaps, it creates a small gap that allows exhaust to escape, causing the distinct ticking sound. The noise may quiet down or disappear as the engine warms up and the metal parts expand, temporarily closing the gap.
Known Issue: Broken Manifold Bolts & TSB
The primary cause of exhaust manifold gasket failure on this generation of Grand Cherokee, especially the 5.7L V8, is not the gasket itself but broken mounting bolts. The original bolts can fatigue and snap, leading to a leak. This is so common that Jeep issued Technical Service Bulletin (TSB) 09-019-23 for 2019-2021 models with the 5.7L engine, acknowledging the cold-start ticking noise and instructing dealers to replace the manifolds with an updated kit. While the TSB covers specific years, the issue is prevalent across the 2012-2021 range.
Choosing the Right Aftermarket Gasket Set
When replacing your gaskets, you have a choice between standard OEM-style replacements and performance-oriented options. Since the main failure point is often the bolts, always choose a kit that includes new, high-quality hardware.
- Fel-Pro: Widely regarded as a reliable, high-quality aftermarket standard. Fel-Pro gaskets often feature multi-layer steel (MLS) construction and are a go-to choice for many mechanics for stock repairs.
- Victor Reinz: Another reputable brand that often serves as an original equipment manufacturer for various car brands. Their gaskets are known for quality and proper fitment, providing an OEM-level repair.
- Cometic Gasket: Often considered a premium or high-performance option. Cometic specializes in Multi-Layer Steel (MLS) gaskets that are excellent at handling high heat and pressure, making them a great choice for heavy-duty use or modified engines.
Pro Tip: Inspect the Manifold and ALWAYS Replace Bolts
When the old gasket is off, it is essential to check the exhaust manifold's mounting surface for warpage. Lay a straight edge across the surface; if you can see gaps, the manifold is warped and should be replaced, not just resealed. Attempting to seal a warped manifold will cause the new gasket to fail quickly. More importantly, always use new exhaust manifold bolts and studs. The old ones have been weakened by thousands of heat cycles and are likely the reason your gasket failed in the first place.
Cost to Replace Exhaust Manifold Gaskets
The cost of the gasket set itself is relatively low, but labor can be expensive, especially if bolts break during removal.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Gasket Set | $39 - $74 |
| Shop Labor | $415 - $609 |
| Total Estimated Cost | $455 - $683 |
Note: Costs are estimates and can vary by location and repair shop. If manifold bolts break during removal, labor costs can increase significantly.
Frequently Asked Questions
Do I have to replace the exhaust manifold bolts?
Yes, it is highly recommended. The original bolts are a known failure point on the Grand Cherokee, especially the 5.7L HEMI. Reusing old, heat-cycled bolts is asking for the new gasket to fail prematurely. Most quality gasket sets come with new hardware.
Can I just tighten the bolts to stop the leak?
No. The leak is almost always caused by one or more bolts that have already broken off. Tightening the remaining bolts will not close the gap and may cause more bolts to break.
Is this a good DIY project?
This job is considered moderate to difficult. While the steps are straightforward, accessing the bolts can be tight, and there is a very high probability of bolts breaking off in the cylinder head. Removing broken bolts requires special tools and experience and can turn a 3-hour job into a day-long project. 🎬 Watch: Pro tips for removing broken manifold bolts from the cylinder head. It is feasible for an experienced DIYer, but beginners should be cautious.
Should I replace the gasket on both sides at the same time?
If one side is leaking due to broken bolts, the other side is likely not far behind. The bolts on both sides have experienced the same number of heat cycles. While not strictly necessary, it is efficient to replace both gaskets and all hardware at the same time if you have the budget and time.
Are there any related recalls?
There are no direct recalls for the exhaust manifold gasket or bolts. However, some 2014-2019 Grand Cherokees with the 3.0L EcoDiesel engine were recalled for a cracking EGR cooler, which is part of the exhaust system. A TSB was issued for the ticking noise on 5.7L V8 models.
Helpful Videos
Technical Specifications
OEM Part Numbers: 5045495AA 05045496AA 53013933AB
The 2012-2021 Jeep Grand Cherokee uses two exhaust manifold gaskets, one for each cylinder bank of the V6 or V8 engine. Most quality aftermarket and OEM gaskets are made of Multi-Layer Steel (MLS) to withstand high temperatures and pressure. Gasket sets should include new bolts and studs for installation.
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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.
- Jeep Grand Cherokee:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Grand Cherokee Making a Ticking Noise?
- Known Issue: Broken Manifold Bolts & TSB
- Choosing the Right Aftermarket Gasket Set
- Pro Tip: Inspect the Manifold and ALWAYS Replace Bolts
- Cost to Replace Exhaust Manifold Gaskets
- Frequently Asked Questions
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