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If you drive an Infiniti QX60, a failing exhaust manifold can hurt engine performance, increase cabin noise, and set off fault codes. Choosing the right exhaust manifold matters because fit, heat handling, and sealing determine durability and how well the engine runs. This guide shortlists the top options for the Infiniti QX60 based on fitment, thermal performance, and sealing reliability. It explains the criteria we used to pick these manifolds and what to watch for when replacing one.
Looking for other parts? See all Infiniti QX60 parts & accessories.
Top Picks at a Glance
| Best overall The best all-around choice for most situations | Dorman Driver Side Exhaust Manifold Kit (includes gaskets and hardware) |  |
| Best Budget The cheapest option that still gets the job done reliably | A-Premium Left Exhaust Manifold Kit with Gaskets and Hardware for Infiniti QX60 / Nissan 3.5L V6 |  |
| Highest Rated A top-rated pick with lots of positive feedback | A-Premium Right Exhaust Manifold Kit with Gaskets and Hardware for Infiniti QX60 (V6 3.5L) |  |
| Most Popular A crowd favorite that many people choose with confidence | Dorman 674-331 Passenger Side Exhaust Manifold Kit with Gaskets and Hardware |  |
| Best Seller A high-volume bestseller chosen again and again | Dorman Exhaust Manifold Kit (674-332) with Gaskets and Hardware |  |
1. Dorman Driver Side Exhaust Manifold Kit (includes gaskets and hardware)
| Material | Cast Iron |
|---|---|
| Manufacturer | Dorman Products |
| Bolt Pattern (Number of Holes) | 6 |
| Manufacturer Part Number | 674-522 |
This Dorman exhaust manifold kit replaces a warped or cracked driver-side manifold with a ductile cast iron unit designed for durability under high heat. It is supplied as a complete repair kit with the manifold, manifold gasket, flange gasket, three studs and three nuts so you can perform a single-purchase replacement without repeated trips for parts. The part is reverse-engineered to match factory fit for a straightforward install and the machined exterior suggests decent sealing surfaces at the flanges. Practical buyers will appreciate the emphasis on higher-grade iron to resist future cracking and the included hardware that streamlines installation. Limitations are typical of replacement manifolds: it is a direct replacement rather than a performance header, so it will not increase power or significantly change exhaust tone, and buyers should confirm exact Scion xD engine and year fitment before ordering.
Best for: Convenience-driven owners seeking a straightforward, one-purchase repair solution who prioritize a reliable factory-style replacement and minimal parts sourcing.
Less Ideal for: Enthusiasts seeking performance exhaust upgrades or owners who want an aftermarket header for increased power and sound should look elsewhere.
- Complete kit includes manifold plus gaskets and hardware for a single-order repair
- Constructed from ductile cast iron to better resist warping and cracking from heat
- Reverse-engineered for direct-fit installation to match factory mounting points
- Machined exterior surfaces aid flange sealing and fitment
- Designed as a factory-style replacement so it does not provide performance gains
- Fitment must be confirmed for specific Scion xD engine year and trim before purchase
Verdict: A convenient, all-in-one factory-style replacement manifold kit built from ductile iron to reduce future warping and cracking.
2. A-Premium Left Exhaust Manifold Kit with Gaskets and Hardware for Infiniti QX60 / Nissan 3.5L V6
| Material Type | Metal, Stainless Steel |
|---|---|
| Included Parts | Manifold, Manifold Gasket, Flange Gasket, Bolts, Studs, Nuts |
| Vehicle Fitment | Infiniti QX60 2014-2020 V6 3.5L (left side) |
This left-side exhaust manifold kit replaces a damaged or cracked factory manifold on 3.5L V6 Infiniti QX60 and compatible Nissan engines. The kit ships with the manifold, a manifold gasket, a flange gasket and fasteners so you can complete a single-side replacement without sourcing extra parts. Constructed from metal with stainless steel listed as the material type, the manifold is meant to resist heat and corrosion that commonly cause exhaust leaks. In practical use it restores proper exhaust flow and reduces exhaust noise or smell caused by leaks when installed correctly. The inclusion of bolts, studs and nuts simplifies do-it-yourself repairs or professional swap-outs, but buyers should verify fit with the vehicle compatibility notes before ordering. This is a budget-focused replacement so finish and long-term durability may not match higher-end factory-quality manifolds, and installers may want to inspect mating surfaces and torque specifications during installation to ensure a reliable seal.
Best for: Budget-conscious owners seeking an inexpensive, ready-to-install left-side exhaust manifold replacement for 3.5L V6 Infiniti QX60 repairs who prioritize immediate functionality and parts completeness.
Less Ideal for: Drivers wanting a long-term premium or performance upgrade to the exhaust system or those who prefer OEM-brand replacement parts should consider higher-end alternatives.
- Complete kit includes manifold, manifold gasket, flange gasket and all necessary bolts, studs and nuts for a left-side replacement.
- Stainless steel construction aimed at resisting heat and corrosion common to exhaust components.
- Designed to restore exhaust sealing and reduce leak-related noise and odors when fitted properly.
- Budget-level replacement may have a less refined finish and potentially shorter long-term durability than higher-end factory-quality manifolds.
Verdict: A complete, budget-focused left-side replacement manifold kit that gets leaking 3.5L V6 QX60 exhaust systems sealed quickly and affordably.
3. A-Premium Right Exhaust Manifold Kit with Gaskets and Hardware for Infiniti QX60 (V6 3.5L)
| Compatibility | Infiniti QX60 2014-2020 V6 3.5L |
|---|---|
| Included Parts | Manifold, manifold gasket, flange gasket, bolts, studs, nuts |
| Material Type | Metal |
| Part Number | APEMD031AM |
This A-Premium manifold kit replaces the right-side exhaust manifold on Infiniti QX60 models with the 3.5L V6 and is supplied as a complete unit with a manifold gasket, flange gasket, bolts, studs and nuts. It is intended for direct replacement during repair or during manifold failure and is marketed to restore exhaust routing and sealing while reducing noise and vibration. The included hardware and gaskets simplify installation for a competent technician and the metal construction aims to withstand normal exhaust temperatures. The kit carries a one-year unlimited-mileage parts guarantee, which provides short-term peace of mind. Buyers should note this is a direct aftermarket replacement rather than a factory-branded part and long-term durability depends on installation and operating conditions; additional labor and potential related repairs are not covered by the guarantee. Fitment is limited to the compatible vehicle list, so verify year and engine before ordering.
Best for: Reliability-focused owners who prioritize restoring factory function with a ready-to-install replacement and who prefer a parts-first repair approach to maintain vehicle dependability.
Less Ideal for: Owners seeking an upgraded performance manifold, long-term OEM-branded replacement, or those who prefer a professional supply chain with extended manufacturer backing should consider other options.
- Complete kit includes manifold, manifold gasket, flange gasket and mounting hardware for straightforward replacement
- Metal construction designed to handle exhaust heat and help restore proper exhaust flow
- Compatible with Infiniti QX60 V6 3.5L fitment range listed, reducing fitment guesswork
- One-year unlimited-mileage parts guarantee for replacement cost protection
- Aftermarket part with variable long-term durability compared with factory-brand manifolds
- Limited hardware count may require additional fasteners or sealants depending on existing component condition
Verdict: A practical, ready-to-install right-side replacement manifold kit for Infiniti QX60 V6 owners needing a reliable parts-first repair.
4. Dorman 674-331 Passenger Side Exhaust Manifold Kit with Gaskets and Hardware
| Manufacturer Part Number | 674-331 |
|---|---|
| Compatible Models | Infiniti QX60 and select Nissan models (see fitment) |
| Exterior | Machined |
| Includes | Gaskets and downpipe hardware |
This Dorman passenger-side exhaust manifold is a full replacement kit intended to restore exhaust routing and sealing on compatible Infiniti QX60 and select Nissan engines. It ships with the gaskets and downpipe hardware needed for a single-stop repair, so a technician or DIYer can remove the old manifold and install the new unit without sourcing extra parts. The manifold is machined and reverse-engineered to approximate factory fit, and Dorman states the design is tested against emissions and durability targets. In practice the kit simplifies repairs and reduces downtime compared with ordering multiple parts, and the included hardware helps avoid trips to the parts store. Some buyers reported rough interior welds and a missing heat-shield nut, so visual inspection at install and careful torqueing are advisable. This is a practical aftermarket option when you need a ready-to-install replacement rather than an OEM remanufactured part.
Best for: Convenience-driven buyers who prioritize a single-order repair solution and faster turnaround when fixing an Infiniti QX60 exhaust manifold issue.
Less Ideal for: Buyers seeking a dealer-level factory replacement or the highest finish and long-term assurance should consider a factory-quality manifold from the dealer or a certified remanufacturer instead.
- Complete kit includes manifold, gaskets, and downpipe hardware for one-order repair
- Machined finish and reverse-engineered design aimed at matching factory fit
- Simplifies repair workflow and reduces parts-sourcing time
- Some units show uneven internal welds and occasional missing small hardware requiring inspection at install
- Not an OEM factory part so finish and long-term durability may vary from dealer replacements
Verdict: A ready-to-install aftermarket manifold kit that speeds repairs by including all required gaskets and hardware for compatible Infiniti QX60 applications.
5. Dorman Exhaust Manifold Kit (674-332) with Gaskets and Hardware
| Compatible vehicle | Infiniti QX60 (2014–2020) |
|---|---|
| Includes | Manifold plus gaskets and downpipe hardware |
| Exterior | Machined |
| Manufacturer | Dorman Products |
| OEM part reference | 101565; 14002-JA10B |
This Dorman manifold kit is a direct replacement designed to match the fit and function of the original exhaust manifold on specified vehicles, and it ships with the gaskets and downpipe hardware needed for a complete repair. Intended for use as a one-order repair solution, the machined manifold is reverse-engineered from factory parts to simplify installation and reduce the chance of fitment issues when matched to the correct trim. In practice this means fewer trips for missing pieces and a faster repair when replacing a cracked or leaking manifold on the Infiniti QX60. The manufacturer states the part is tested to meet emissions and durability standards and aims to resist warping and cracking. The main limitations are that compatibility must be verified for your exact trim and year before buying, and as with any aftermarket replacement some subtle differences from a factory part can exist that may matter to highly tuned engines or restorations.
Best for: A risk-averse mainstream buyer who wants a ready-to-install, reliable replacement that reduces repair uncertainty and avoids multiple orders.
Less Ideal for: Owners seeking exact factory-original parts for concours restorations or performance tuners wanting custom manifolds should consider other options.
- Includes all required gaskets and downpipe hardware for a complete repair
- Engineered to match factory fit and function to simplify installation
- Machined finish and construction intended to resist warping and cracking
- Requires confirming exact QX60 trim and year for proper fitment
- Aftermarket part may differ slightly from factory parts in finish or fit details
Verdict: A practical, complete replacement manifold kit for Infiniti QX60 owners who want a straightforward, ready-to-install repair.
Choosing the Right Infiniti QX60 Exhaust Manifold: Key Factors to Consider
Fitment and Flange Accuracy
Correct fitment is critical because an exhaust manifold must match the Infiniti QX60 cylinder head flange and bolt pattern precisely. Even small misalignments can lead to leaks, stressed bolts, and warped flanges over time.
Flange accuracy affects how well the manifold seals against the head and how evenly load is distributed across the gasket. Check whether the manifold specifies OEM-equivalent flange dimensions and bolt spacing to reduce the chance of post-installation adjustments or machining.
Material and Thermal Resistance
Materials determine how the manifold handles repeated heat cycles. Cast iron offers good resistance to cracking from heat stress, while certain stainless steels resist corrosion and can be thinner but still strong. The Infiniti QX60 application experiences high exhaust temperatures, so choose materials rated for thermal cycling.
Thermal resistance also influences heat soak into nearby components. A manifold with better heat management reduces the risk of premature gasket failure and protects adjacent sensors and wiring.
Gasket Interface and Sealing Design
A reliable sealing surface and proper gasket selection are essential to prevent exhaust manifold leak symptoms such as ticking noises, poor idle, or reduced performance. Designs that include flat, machined flanges or integrated gasket rails usually seal more consistently.
Consider whether the manifold requires a specific type of gasket and whether the gasket design accommodates thermal expansion. Proper sealing reduces exhaust leakage that can affect oxygen sensor readings and engine control behavior.
Strength and Resistance to Cracking
Exhaust manifold crack prevention depends on material thickness, reinforcement at stress points, and how the part dissipates heat. Cracks often start at areas with sharp transitions or thin sections, so manifolds with smooth, reinforced transitions are preferable.
Regular thermal cycling and rapid temperature changes heighten crack risk. A robust design minimizes stress concentrations and extends service life in the Infiniti QX60 application.
Installation Complexity and Hardware
Installation difficulty affects labor time and the likelihood of correct torquing and sealing. Manifolds that include correct-length studs, bolts, and high-quality gaskets reduce installation headaches and the chance of fastener failures.
Consider access to bolts on the Infiniti QX60 engine, whether manifold removal requires ancillary part removal, and if any special tools or anti-seize practices are recommended. Easier installations reduce the chance of improper assembly that can cause leaks.
Corrosion Resistance and Long-Term Durability
Exposure to road salt, moisture, and combustion byproducts can corrode manifolds over time. Corrosion-resistant finishes or stainless materials help maintain sealing surfaces and bolt threads, reducing the likelihood of future exhaust manifold replacement.
Durability also ties to warranty and manufacturing quality. Choose manifolds built to withstand environmental exposure and that use coatings or materials suited to local climate conditions.
How We Chose the Best Infiniti QX60 Exhaust Manifold
We focused on parts that offer correct fitment for the Infiniti QX60, reliable sealing at the cylinder head, and robust thermal performance under typical driving conditions. Our evaluation prioritized flange accuracy, thermal expansion resistance, and the quality of gasket interfaces because those aspects most directly affect leaks and fitment. Corrosion resistance and material thickness were considered to predict long-term durability in varied climates. We also reviewed ease of installation, including bolt access and required ancillary parts, since installation complexity influences total labor time. Finally, we considered manufacturer quality control indicators such as material traceability and reinforcement at stress points. We excluded poorly documented components, parts with unclear fitment for the Infiniti QX60, and items lacking basic sealing hardware. Items that did not meet minimum standards for flange flatness or that used undersized bolt holes were removed from consideration.
Our full evaluation process is outlined in our review methodology.
FAQ
What are common exhaust manifold symptoms on an Infiniti QX60?
Common symptoms often include a ticking or tapping noise from the engine bay, decreased engine smoothness at idle, and occasional exhaust odor in the cabin. You may also see reduced fuel economy or trigger a check-engine indicator due to altered sensor readings.
How can I diagnose an exhaust manifold leak?
Diagnosis usually starts with a visual inspection for soot marks or cracks at the flange and along the manifold. A running test can reveal ticking noises tied to exhaust pulses, and a hand-held smoke test or a focused pressure check can help locate leaks. Use care around hot components and consider professional help if access is limited.
When should I replace the exhaust manifold gasket versus the whole manifold?
If the flange is flat and free of cracks, replacing the gasket may resolve leaks caused by failed seals. However, if there is flange warping, visible cracking, or damaged bolt bosses, replacing the entire manifold is usually the longer-lasting solution. Evaluate the condition of both the gasket surface and the manifold material.
What causes an exhaust manifold crack?
Cracks commonly result from thermal cycling, stress concentrations at transitions or bolt holes, and corrosion that weakens the metal over time. Rapid temperature changes, such as driving hard immediately after cold starts, can exacerbate stresses that lead to cracking.
How much does exhaust manifold installation typically add to cost estimates?
Installation complexity depends on bolt access, required ancillary removals, and whether studs or bolts are seized. Labor time can vary widely, and more complex installs that require removing intake or other components usually increase labor compared with straightforward bolt-on replacements. Expect varying labor depending on local shop practices.
Is it okay to swap exhaust manifold parts between used manifolds?
Swapping parts can be acceptable if the donor manifold has confirmed flange flatness, no cracks, and matching bolt hardware. However, mixing components risks fitment and sealing issues if dimensions or wear differ. When in doubt, use matched hardware and inspect surfaces carefully before installation.
Conclusion
Prioritize correct fitment, flange quality, and a gasket-friendly sealing surface when choosing an Infiniti QX60 exhaust manifold. Balance material choice and thermal resistance against installation complexity and long-term corrosion resistance. Accept some tradeoffs between ease of installation and maximal durability. Focus on parts that address the specific symptoms you see, such as leaks or cracks, and pick options that make future servicing straightforward.
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