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If you drive a 2005-2010 Jeep Grand Cherokee, a failing exhaust manifold can cause performance loss, noisy operation, and engine bay heat problems. Choosing the right exhaust manifold matters because fitment and heat management directly affect drivability, emissions sensors, and long-term durability for the WK Grand Cherokee platform. This guide covers our six shortlisted exhaust manifolds that meet fitment and thermal needs for the 2005-2010 (WK) Grand Cherokee. We evaluate each option for fit, heat control, and sealing reliability, and we also consider ease of installation and longevity. Read on for the key tradeoffs to help you pick the right replacement for your vehicle.
Looking for other parts? See all Jeep Grand Cherokee parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | Dorman 674-922 Driver Side Exhaust Manifold with Gaskets and Hardware |  |
| Best Quality Built to a higher standard if you want something more solid | Dorman 674-288 Driver Side Exhaust Manifold Kit with Gaskets and Hardware |  |
| Best Value The sweet spot between price and what you get | A-Premium V8 5.7L Exhaust Manifold Kit with Gasket, Bolts & Nuts, Right Side |  |
| Best Budget The cheapest option that still gets the job done reliably | ZHRUIHAN Exhaust Manifold Kit with Gaskets and Hardware for 5.7L V8 |  |
| Highest Rated A top-rated pick with lots of positive feedback | Dorman 674-912 Cast Iron Driver Side Exhaust Manifold Kit |  |
| Most Popular A crowd favorite that many people choose with confidence | Dorman 674-915 Driver Side Exhaust Manifold Kit with Gaskets and Hardware |  |
Dorman 674-922 Driver Side Exhaust Manifold with Gaskets and Hardware
| Position | Center |
|---|---|
| Model | 674-922 |
| Manufacturer | Dorman Products |
| OEM Part Number | 101478; 53034137AC; 68045559AA; 68045559AB |
| Includes | Gaskets and downpipe hardware |
This Dorman driver-side exhaust manifold is an affordable, ready-to-install replacement intended to restore the exhaust path and stop leaks on compatible vehicles. It ships with gaskets and downpipe hardware so you can complete the repair in one visit, and Dorman says the part is reverse-engineered to match factory fit. In real-world use the cast manifold bolts up and quiets exhaust leaks for owners who need a straightforward repair; reviewers report good fitment on compatible Ram and Jeep V8 models. Practical drawbacks include inconsistent hardware quality and some units arriving with damaged gaskets or flange bolt holes that differ from the factory design, which can require sourcing alternative bolts or replacing the supplied gasket before installation. For a balanced buyer this part delivers a cost-effective route to fix a leaking or cracked driver-side manifold, but expect to verify the included fasteners and gasket before final assembly.
Best for: Buyers who want a practical, budget-conscious replacement to stop exhaust leaks on covered Jeep Grand Cherokee V8 models and value a single-package repair that minimizes follow-up parts orders.
Less Ideal for: If you prioritize strictly factory-original hardware or want a premium coated or performance manifold, consider higher-end or OEM-sourced options instead.
- Complete kit includes manifold plus gaskets and downpipe hardware for a one-order repair.
- Engineered to match factory fit for straightforward installation on listed vehicles.
- Durable cast construction intended to resist warping and provide long service life when installed correctly.
- Widely available replacement with documented fitment for Jeep Grand Cherokee and related Rams from the model years listed.
- Some units arrive with damaged or low-quality gaskets that owners replace before final assembly.
- Included exhaust flange bolts may not fit factory flange threads and can require different fasteners.
- A few reviewers report variations in bolt hole threading compared with the factory part, requiring additional work to adapt.
Verdict: A cost-effective, all-in-one replacement that restores factory fit and seals for driver-side exhausts on the covered Jeep Grand Cherokee V8 models.
Dorman 674-288 Driver Side Exhaust Manifold Kit with Gaskets and Hardware
| Manufacturer | Dorman Products |
|---|---|
| Model | 674-288 |
| OEM Part Number | 53013691AC |
| Compatible Vehicles | Dodge Nitro 2009-2011; Jeep Commander 2009-2010; Jeep Grand Cherokee 2009-2010; Jeep Liberty 2009-2013 |
This Dorman driver-side exhaust manifold is a ready-to-install replacement designed to match the fit and function of the original manifold on compatible 3.7L V6 Jeep and Dodge models. It is typically used when the factory manifold has warped, cracked, or begun to leak and you need a complete repair without sourcing multiple parts. Notable features include precision engineering to replicate factory mating surfaces and a full kit of gaskets and downpipe hardware so installers can complete the job with a single part. In practice the included hardware saves trips to the parts store and shortens shop time, and the unit’s construction aims to resist warping and leaks for longer-term reliability. Limitations are that this is a direct replacement rather than a performance header, so it will restore stock exhaust routing and backpressure rather than increase flow or horsepower. Buyers seeking a performance gain should consider dedicated headers or tuned exhaust components instead.
Best for: Buyers who want a reliable, factory-quality replacement manifold to restore proper sealing and drivability on late 2000s Jeep Grand Cherokee and similar vehicles without extra parts hunting.
Less Ideal for: Enthusiasts looking to extract more power through improved exhaust flow or who want a custom-tuned exhaust setup should choose performance headers or a full exhaust upgrade instead.
- Includes all necessary gaskets and downpipe hardware for a one-order complete repair
- Engineered to match factory fit and mounting surfaces for straightforward installation
- Durable construction designed to resist warping and leaking over time
- Saves time by eliminating the need to source multiple parts during manifold replacement
- Not designed to improve exhaust flow or increase engine performance compared with aftermarket headers
Verdict: Choose this Dorman manifold when you need a complete, factory-quality driver-side replacement that saves installation time by including all required gaskets and hardware.
A-Premium V8 5.7L Exhaust Manifold Kit with Gasket, Bolts & Nuts, Right Side
| Compatible engines | V8 5.7L |
|---|---|
| Vehicle fitment | Grand Cherokee 2005-2008, Commander 2006-2008 |
| Package contents | Manifold, gasket, 2 bolts, 2 nuts |
| Manufacturer part number | APEMD054 |
This A-Premium exhaust manifold kit replaces the right-side manifold on 5.7L V8 Jeep Grand Cherokee (2005-2008) and Commander (2006-2008). It ships with a manifold gasket and basic bolts and nuts so you can swap the unit without sourcing extra hardware. The manufacturer states the part reduces noise and helps absorb vibration, and its stamped/cast construction is intended for straightforward bolt-on installation at a repair shop or for a competent DIYer. Practical buyers will appreciate the included gasket and fasteners and the stated one-year unlimited-mileage guarantee. Expect factory-style fit and function for routine repairs, but note some users reported warping over time, so longevity may vary depending on engine heat cycles and installation torque. If you need a quick, budget-minded replacement to restore exhaust sealing and drivability, this kit covers the basics, but plan inspections after high-heat use and consider professional installation to ensure proper torque and alignment.
Best for: Buyers who need an affordable, ready-to-install right-side replacement to restore exhaust sealing and reduce cabin noise without sourcing extra hardware.
Less Ideal for: Drivers seeking a heavy-duty or performance-oriented manifold for sustained high-heat use or long-term durability beyond stock specifications.
- Includes gasket and necessary bolts and nuts for one-side installation
- Designed to fit 5.7L V8 Grand Cherokee and Commander right-side configuration
- Claims noise reduction and vibration absorption to improve cabin comfort
- Offers a one-year unlimited-mileage guarantee
- Some user reports of warping and premature failure under heat cycling
Verdict: A practical, budget-friendly right-side replacement that includes gasket and fasteners to get a 5.7L Jeep back to proper exhaust sealing quickly.
ZHRUIHAN Exhaust Manifold Kit with Gaskets and Hardware for 5.7L V8
| Brand | ZHRUIHAN |
|---|---|
| Model | FDJQG-0003 |
| Exterior | Stainless Steel |
| OEM Part Number | 674-685, 674-922, 101478, 53034137AC, 68045559AA, 68045559AB |
This ZHRUIHAN exhaust manifold kit is a budget-focused driver-side replacement for 5.7L Hemi engines and arrives as a complete package with the manifold, manifold and flange gaskets, studs, and nuts. It is cast metal with a protective coating to resist corrosion and is engineered to handle the high heat of exhaust flow. Typical use is as a direct-fit replacement to stop exhaust leaks and restore sealing where an original manifold has warped or cracked. Buyers will appreciate that the sealing surfaces are machined true and the y-pipe flange aligns correctly, so installation is straightforward for experienced DIYers or a shop. The casting finish is utilitarian rather than polished, so cosmetic roughness is visible but does not affect function. The kit mirrors common aftermarket references and provides a low-cost alternative to dealer parts, though installers should be prepared to deal with seized or broken studs on high-mileage engines during replacement. For a wallet-conscious repair that restores proper exhaust sealing, this kit delivers solid value.
Best for: Buyers looking for an affordable, ready-to-install replacement to fix exhaust leaks and restore proper sealing on a 5.7L Hemi without paying dealer-level prices.
Less Ideal for: Users seeking a show-quality or polished performance part or those who want upgraded high-temp coatings or billet finishes should consider higher-end options.
- Includes required gaskets and hardware for a single, complete replacement
- Direct-fit design with true sealing surfaces and correct flange alignment
- Protective coating to reduce corrosion risk during storage and initial service
- Lower-cost alternative to dealer or premium branded manifolds
- Casting surface is rough and cosmetic rather than finished
Verdict: A complete, low-cost driver-side manifold kit that restores sealing on 5.7L Hemi engines and maximizes value for budget repairs.
Dorman 674-912 Cast Iron Driver Side Exhaust Manifold Kit
| Material Type | Cast Iron |
|---|---|
| Installation Type | Bolt-On |
| Compatible with Vehicle Type | Car |
This Dorman exhaust manifold kit is a direct replacement designed to restore the driver-side exhaust path on compatible 2005–2007 Jeep Grand Cherokee and 2006–2007 Jeep Commander models. It is made from cast iron to resist warping and cracking and ships with all gaskets and downpipe hardware so you can complete the repair in one visit. Typical use is a like-for-like swap when a cracked or leaking factory manifold causes exhaust leaks, noise, or failed emissions tests. The bolt-on fit and vehicle-specific engineering aim to match factory fitment, which helps simplify installation for experienced DIYers and independent shops. Because the kit includes the hardware, it removes the need to source separate gaskets or bolts. Limitations are that this is an aftermarket replacement rather than a factory part and fit depends on correct vehicle trim verification; installers should confirm exact fitment before purchase and expect normal variations in finish and fit that sometimes require minor adjustments.
Best for: Buyers who prioritize a reliable, long-lasting repair and want a complete kit that minimizes additional parts sourcing and downtime.
Less Ideal for: Do not choose this kit if you are restoring a show vehicle that requires original factory finish or if you need a different model year or non-listed vehicle fitment.
- Includes all required gaskets and downpipe hardware for a one-order repair
- Cast iron construction resists warping and cracking for long service life
- Vehicle-specific, bolt-on design simplifies installation compared with generic manifolds
- Aftermarket replacement may show minor finish or fit differences compared with factory parts
Verdict: A durable, ready-to-install cast-iron replacement that provides a complete, reliability-focused repair for specified Jeep driver-side exhaust manifold failures.
Dorman 674-915 Driver Side Exhaust Manifold Kit with Gaskets and Hardware
| Manufacturer | Dorman Products |
|---|---|
| Model | 674-915 |
| Fitment years | 2007-2011 Jeep Wrangler listed in description |
| Position | Center |
| Exterior | Machined |
This Dorman driver-side exhaust manifold is a replacement part engineered to match the fit and function of the factory manifold for specified Jeep models in the covered years. It arrives as a complete kit with gaskets and the downpipe bolts needed to finish the repair, which speeds up a typical shop or DIY replacement and avoids multiple parts orders. The machined construction and reverse-engineered design aim to resist warping and leaks so the engine runs quieter and emissions sealing is restored. Several installers report an easy bolt-on fit when old fasteners are removed carefully, though some users replaced the included gasket with a higher-grade set for extra assurance. Note that head-to-manifold mounting bolts are not included, so you may need to source new bolts and use penetrating spray or anti-seize when removing rusty hardware; a few buyers also called out inconsistent casting quality on rare units. For a budget-focused repair that restores a leaking or cracked OEM manifold on the applicable Jeep, this kit covers the basics without extra aftermarket tuning features.
Best for: Buyers who want a cost-effective, ready-to-install replacement to repair a leaking or cracked driver-side manifold on the specified Jeep models and prefer to rely on community-tested parts.
Less Ideal for: People seeking performance upgrades, custom porting, or a premium OEM-grade cast with guaranteed flawless finish should consider higher-end or dealer-sourced options instead.
- Includes necessary gaskets and downpipe hardware for a one-box repair
- Machined construction designed to resist warping and leaks
- Reverse-engineered to match factory fit for specified applications
- Widely available replacement with many positive installer reports
- Does not include head-to-manifold mounting bolts
- Occasional reports of uneven casting or fit issues on some units
Verdict: If you need a budget-friendly, mostly reliable replacement manifold kit that includes gaskets and downpipe hardware to fix leaks on the covered Jeep models, this Dorman unit is an efficient choice.
Choosing the Right 2005-2010 Jeep Grand Cherokee Exhaust Manifold: Key Factors to Consider
Fitment and Compatibility
Correct fitment is the first priority because misaligned flanges or wrong port spacing will cause exhaust leaks and sensor misreads. Verify flange pattern, bolt hole locations, and the model-year range the manifold lists to ensure compatibility with 2005-2010 WK Grand Cherokee cylinder head ports.
Compatibility also includes clearance to heat shields, steering components, and accessories unique to the WK chassis. Some manifolds are made to fit both 3.7 and 4.7 variants with different mounting brackets; confirm which engine the manifold supports. Poor fitment often translates into difficult installation and recurring leaks, so choose a manifold that matches the factory geometry closely.
Material and Heat Resistance
Material selection affects thermal expansion, cracking resistance, and long-term durability. Cast iron handles heat cycling well and resists warping but can be heavy. Some modern alloys or coated steels offer better weight and corrosion resistance but may expand differently under heat, affecting flange flatness.
For the Grand Cherokee, which can subject exhaust components to off-road dust and varied climates, pick a material or coating that resists surface corrosion and reduces the risk of stress fractures. Consider how the manifold's thermal characteristics will interact with nearby sensors and plastic components under sustained load.
Sealing and Gasket Interface
A tight seal at the flange prevents leaks that cause noise, reduced backpressure, and incorrect oxygen sensor readings. Look for manifolds with flat, machined flanges and clear instructions on gasket type and torque sequence.
Some manifolds include multi-layer steel gaskets or require OEM-style composite gaskets; matching the gasket to the flange finish is essential. Also evaluate whether the manifold design allows even bolt torque and whether studs or bolts are reused, since uneven torque or damaged threads are common sources of leaks on the WK Grand Cherokee.
Durability and Resistance to Cracking
Exhaust manifolds experience repeated thermal cycles that can cause fatigue cracks, especially near high-stress corners or thin sections. Assessments should focus on wall thickness, stress-relief design features, and historical performance of the construction method.
Manifolds with reinforcement around bolt holes, gradual changes in cross-section, and protective coatings tend to resist cracking longer. For vehicles that see towing or extended highway runs, prioritize options rated for higher thermal loads and with proven resistance to hairline fractures.
Installation Complexity and Hardware
Installation difficulty affects both cost and the chance of future problems. Determine whether the manifold requires removing accessories, heat shields, or components that complicate reassembly. Manifolds that provide clear hardware, correct-length bolts or studs, and alignment dowels reduce installation errors.
Also consider whether the design allows torqueing to factory specifications without obstructing access to fasteners. If a manifold requires specialty tools or modification to the exhaust downpipe, that increases labor time and the risk of incorrect installation on the WK Grand Cherokee.
Impact on Emissions and Sensor Function
The Grand Cherokee's oxygen sensors and downstream emissions components depend on stable exhaust flow and correct manifold sealing. Manifold designs that alter pulse timing or location of the O2 sensor ports can affect sensor readings and, in turn, engine management behavior.
Choose a manifold that preserves original sensor locations or clearly documents any differences and the required sensor extensions or fittings. Maintaining proper sensor function avoids check-engine lights and preserves drivability.
Signs You Need an Exhaust Manifold Service
Listen and look for common symptoms before deciding on a replacement. Typical indications include a ticking or tapping noise on cold start that grows with acceleration, a noticeable decrease in low-end torque, and a strong exhaust smell in the engine bay. Heat-related discoloration or soot around the flange and visible hairline cracks are visual cues to act.
Another common sign is fluctuating idle or intermittent check-engine codes tied to oxygen sensor readings. Because the WK Grand Cherokee shares tight clearances in the engine bay, small leaks can quickly lead to visible soot and accelerated gasket wear. Early diagnosis can often prevent more extensive repairs.
- Tapping noise that changes with engine speed
- Soot or black streaks at the flange interface
- Fluctuating idle or O2 sensor-related codes
- Visible warping, cracks, or missing gasket material
Common Causes of Manifold Leaks on the WK Grand Cherokee
Thermal cycling, corrosion, and mechanical fatigue are the primary causes of leaks. Repeated expansion and contraction can warp flanges or stress-crack thin sections. Salt, road grime, and moisture accelerate corrosion at flange faces, bolt holes, and along welds.
Over-torqued or missing fasteners and degraded gaskets are common maintenance-related causes. On WK chassis vehicles that have seen off-road use or winter salt, inspect for corrosion at the mounting surfaces and around studs, which can compromise sealing even if the manifold casting remains intact.
- Heat-induced warping of the flange
- Corrosion around fasteners and gasket surface
- Stress cracks from repeated load cycles
- Improper torque sequence or missing studs
Gasket Options and When to Replace Them
Choosing the correct gasket matters as much as the manifold itself. For many replacements, multi-layer steel (MLS) gaskets provide a durable seal that tolerates heat and minor surface irregularities. Composite gaskets can work for low-stress applications but may degrade faster under high heat cycles.
Replace the gasket whenever the manifold is removed. Inspect flange surfaces for flatness and clean mating faces thoroughly before installing a new gasket. If bolt threads or studs show corrosion, address those issues before reassembly to prevent repeat leaks.
- MLS for high-heat and long-term durability
- Composite for budget or low-heat situations
- Always replace gaskets during manifold service
- Check and service studs and bolts when replacing gaskets
Installation Tips to Reduce Future Problems
Use a proper torque sequence and a calibrated torque wrench to avoid uneven flange loading. Tighten fasteners incrementally in the sequence recommended for the engine, and re-torque where specified after initial heat cycles. Lubricate threads with high-temperature anti-seize sparingly when replacing studs or bolts.
Clean and inspect mating surfaces, and consider light lapping only if needed to restore flatness. If the replacement manifold uses different hardware or requires additional fittings for sensors, plan those steps ahead to avoid surprises during reassembly.
- Follow incremental torque sequence and final torque specs
- Use anti-seize on bolts or studs as recommended
- Clean mating surfaces and replace gaskets at removal
- Plan for sensor extensions or fittings if required
When to Consider a Manifold Swap or Upgrade
A swap makes sense when the original manifold is cracked, heavily corroded, or repeatedly leaking despite gasket changes. Owners seeking better thermal management or a more durable material may opt to replace the original with a more robust design that addresses known weak points on the WK chassis.
However, swaps that alter sensor placement or exhaust routing can increase installation complexity and the chance of engine management issues. Consider a direct-fit replacement unless you have a clear reason and plan for addressing sensor and emissions implications.
- Swap for cracked or irreparably corroded manifolds
- Upgrade for improved heat management or durability
- Prefer direct-fit designs to avoid sensor relocation
- Ensure any swap preserves emissions sensor function
Routine Maintenance to Extend Manifold Life
Regular inspection during oil changes or routine service can catch early signs of leakage or corrosion. Look for soot, loose fasteners, and discoloration that indicate heat issues. Addressing loose bolts or replacing deteriorating gaskets early avoids larger repairs.
Keeping the engine bay clean of salt and debris and addressing cooling system issues that raise under-hood temperatures will also reduce thermal stress on the manifold. For high-mileage WK Grand Cherokees, proactive inspection can prevent sudden failures.
- Inspect flanges and bolts at regular service intervals
- Replace gaskets promptly if signs of leakage appear
- Clean salt and debris from the engine bay
- Monitor cooling system to control under-hood temperatures
How We Chose the Best 2005-2010 Jeep Grand Cherokee Exhaust Manifold
We prioritized criteria that matter specifically to 2005-2010 Jeep Grand Cherokee owners and the WK generation. First, fitment accuracy was nonnegotiable: manifolds had to match factory flange patterns and exhaust port layout for the 3.7, 4.7, or 5.7 engines used in this model range. Second, heat management and material were critical because the Grand Cherokee's engine bay routing concentrates thermal stress near sensors and plastic components. Third, sealing performance guided selections, focusing on flange flatness, bolt pattern integrity, and gasket compatibility to prevent leaks. Fourth, corrosion resistance and expected service life were considered, favoring materials and coatings that resist cracking and rust under highway and off-road conditions. Fifth, installation practicality mattered: we looked for options that minimize accessory removal, use standard fastener locations, and include clear mounting hardware or reuse OEM bolts when possible. We excluded manifolds that required engine modifications, extensive header clearance work, or altered emissions control components. We also did not include products that lack clear fitment data for the WK Grand Cherokee. The resulting list balances real-world durability, thermal performance, and straightforward installation for typical owners.
Our full evaluation process is outlined in our review methodology.
FAQ
How can I diagnose an exhaust manifold leak on my 2005-2010 Grand Cherokee?
Common methods include a visual inspection for soot and cracks, listening for a ticking noise that changes with RPM, and feeling for escaping exhaust gases around the flange when the engine is running at idle. Use a smoke test or a handheld inspection mirror to confirm leak locations safely.
Can I reuse the old gasket when replacing the manifold?
You should not reuse the old gasket. Always install a new gasket when the manifold is removed because reused gaskets often fail to seal properly after being compressed and exposed to heat cycles.
What causes exhaust manifolds to crack on the WK Grand Cherokee?
Cracking usually results from thermal stress cycles, corrosion, and mechanical fatigue. Thin wall sections, rusted fasteners, and repeated extreme temperature swings accelerate the formation of hairline cracks in the casting or welds.
Is a welded repair reliable for a cracked manifold?
Weld repairs can be a temporary or permanent fix depending on the material and location of the crack. High-stress or thin sections are less likely to hold long-term. Evaluate the crack location, accessibility, and whether the weld will restore proper flange flatness before choosing repair over replacement.
Will a manifold leak trigger the check-engine light on my Jeep?
Yes, a leak that alters oxygen sensor readings or exhaust backpressure can cause engine management codes and trigger the check-engine light. Symptoms may include erratic idle or fuel trim adjustments as the ECU compensates for incorrect sensor data.
How much does installation typically add to the exhaust manifold cost?
Labor time varies with symptom complexity and whether accessories or heat shields must be removed, but expect a moderate-to-intensive job that can require several hours. Installation cost depends on shop rates and whether studs or related components need replacement.
Do I need to change sensors when replacing the manifold?
Not always. If sensors are functioning and undamaged, they can usually be reused. However, if sensor threads are corroded, wires damaged, or sensor performance degraded, replacing them during manifold service is prudent.
Final Verdict
When replacing an exhaust manifold on a 2005-2010 Jeep Grand Cherokee, prioritize correct fitment, flange sealing, and materials that tolerate repeated heat cycles. Balance the desire for lighter or coated materials against the need for flange stability and corrosion resistance specific to the WK chassis. Address gasket and fastener condition during installation, and favor options that preserve original sensor locations to avoid engine management issues. With these priorities, you can select a solution that restores performance, eliminates leaks, and reduces the chance of repeat service.
Explore More:
- Check out all Jeep Grand Cherokee parts & accessories
- Explore Exhaust Manifolds Maintenance & Repair Guides
- Explore Exhaust & Emissions
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