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Replacing the right exhaust manifold can restore engine performance, reduce noise, and prevent exhaust leaks that affect drivability and emissions. If you own a Nissan Altima, choosing a manifold that fits correctly and handles heat well matters for long-term reliability and engine efficiency. This guide covers the top shortlisted exhaust manifolds for the Nissan Altima, focusing on real-world concerns like fitment, durability, and thermal performance. Read on to understand the evaluation criteria and which attributes matter most when selecting a replacement manifold.
Looking for other parts? See all Nissan Altima parts & accessories.
Top Picks at a Glance
| Best overall The best all-around choice for most situations | Dorman Exhaust Manifold Kit with Gaskets and Hardware |  |
| Best quality Built to a higher standard if you want something more solid | Dorman Exhaust Manifold Kit with Gaskets and Hardware (674-332) |  |
| Best Value The sweet spot between price and what you get | A-Premium Front Exhaust Manifold Catalytic Converter with Gasket Kit for Nissan Altima 2.5L (2007–2013) |  |
| Best Budget The cheapest option that still gets the job done reliably | Anytek Front Catalytic Converter with Exhaust Manifold and Gasket for Nissan Altima/Rogue 2.5L |  |
| Highest Rated A top-rated pick with lots of positive feedback | MOSTPLUS Manifold Catalytic Converter Compatible with Nissan Altima 2.5L (2007–2013) |  |
| Best Seller A high-volume bestseller chosen again and again | Northeastern Exhaust Stainless Steel Exhaust Manifold for 2007–2012 Nissan Altima 2.5L |  |
1. Dorman Exhaust Manifold Kit with Gaskets and Hardware
| Installation Type | Bolt-On |
|---|---|
| Automotive Fit Type | Vehicle Specific Fit |
| Exterior | Machined |
| Position | Center |
This Dorman exhaust manifold kit is a direct-fit replacement designed to restore a leaking or cracked manifold without sourcing extra parts. It ships with the manifold plus gaskets, flange gaskets, studs and nuts so you can complete the repair in one job instead of ordering bits separately. Constructed from ductile iron, the manifold resists warping and cracking better than lower-grade cast iron, which helps when the engine runs hot or has a history of failed cast manifolds. Typical use is a passenger-side replacement during a repair of exhaust leaks, broken studs, or cracked flanges; installers report the kit fits closely to factory geometry though a few mechanics shave minor interference areas or replace the supplied gasket and bolts with higher-quality aftermarket units. The included hardware speeds installation but some buyers choose to upgrade fasteners and gaskets for longer-term reliability. Expect a heavy, robust part that solves common leak and broken-stud issues but may require small adjustments or better gasket/bolt choices for an optimal, long-term result.
Best for: A balanced all-round buyer looking for a reliable, ready-to-install replacement that lets them complete a common exhaust repair in a single purchase and get their Altima back to normal without chasing parts.
Less Ideal for: Drivers seeking a long-term premium rebuild with upgraded fasteners and gaskets or those unwilling to perform minor clearance trimming should consider higher-end remanufactured options or professional machine-shop repairs.
- Complete kit includes manifold, manifold gasket, 2 flange gaskets, studs and nuts for a one-order repair
- Ductile iron construction reduces risk of warping and cracking compared with lower-grade manifolds
- Reverse-engineered direct fit intended to match factory mounting points for easier installation
- Quality engineering and testing performed in the United States
- Some installers report the supplied gasket and a few fasteners are lower quality and may be replaced during installation
- Occasional minor fitment trimming reported on certain installations requiring basic grinding or clearance work
Verdict: A durable, all-in-one replacement kit that fixes common manifold leaks and broken-stud problems quickly, though some installers swap the supplied gasket and bolts for longer-lasting parts.
2. Dorman Exhaust Manifold Kit with Gaskets and Hardware (674-332)
| Manufacturer | Dorman Products |
|---|---|
| Model | 674-332 |
| Exterior | Machined |
| OEM Part Number | 101565; 14002-JA10B |
This Dorman exhaust manifold kit replaces a failed manifold on compatible Nissan Altima models and is designed to match factory fit and function. It arrives as a complete kit with gaskets and downpipe hardware so you can perform a one-stop repair without sourcing additional parts. The manifold is machined for a precise mating surface to reduce leaks and is engineered to resist warping and cracking under heat, which helps restore exhaust flow and keeps the engine running smoothly. For a performance-oriented Altima owner, the part preserves stock backpressure characteristics while providing a reliable long-term replacement that is easier to install than piecing together separate parts. Expect a straightforward swap when trim and year match the vehicle fitment. This is an aftermarket unit, so while it aims to mirror factory performance and fitment, minor adjustments during installation are possible and very high-performance upgrades beyond factory specifications are not the intended use.
Best for: Performance-oriented buyers who prioritize restoring reliable, factory-like exhaust function on a Nissan Altima and want a single-purchase solution to get the car back on the road quickly.
Less Ideal for: Buyers seeking a performance-tuned manifold for increased power or racers looking for custom exhaust tuning should consider dedicated performance options instead.
- Complete kit includes gaskets and downpipe hardware for a single-order repair
- Machined exterior and precision engineering to match factory fit and reduce leaks
- Durable construction aimed to resist warping and cracking under heat
- Aftermarket replacement may require minor adjustments during installation
- Not intended as a high-performance upgrade beyond factory specifications
Verdict: A ready-to-install, factory-style replacement manifold kit that simplifies repairing the Nissan Altima’s exhaust while preserving stock performance.
3. A-Premium Front Exhaust Manifold Catalytic Converter with Gasket Kit for Nissan Altima 2.5L (2007–2013)
| Vehicle Fitment | Nissan Altima 2007–2013 L4 2.5L |
|---|---|
| EPA Compliant | Yes (federal; restricted in some states) |
| Position | Front |
| Body Material | Stainless Steel |
| Gasket & Bolts Included | Yes |
This A-Premium front exhaust manifold catalytic converter replaces the factory front catalytic assembly on 2.5L Nissan Altima models from 2007 through 2013. It arrives as a complete package with welded inlet and outlet flanges, heat shields, gaskets and bolts so it can be fitted in place of the original unit during exhaust repairs or emissions-related replacements. Constructed from stainless-steel tubing and offered as EPA-compliant for federal emissions, it aims to mirror factory fit and function while simplifying installation for a professional or competent DIY mechanic. The included hardware and preformed flanges reduce modification and extra part purchases, and several owner reports show good fit and no check-engine codes after install. Limitations to consider are variable long-term durability across units and state restrictions: this specific EPA compliance does not allow sale or use in California, New York, Colorado or Maine. Buyers should also budget for proper installation and possible replacement studs if original fasteners are damaged.
Best for: Practical optimizers who want a near-factory replacement that minimizes additional purchases and simplifies a front exhaust catalytic manifold swap on a 2.5L Altima.
Less Ideal for: Drivers in states with stricter aftermarket emissions rules or owners seeking a lifetime-proven OEM part without any risk of early failure should consider other options or dealer replacement parts.
- Fits Nissan Altima 2.5L (2007–2013) with factory-style inlet and outlet flanges for straightforward installation.
- Ships with gaskets, bolts and heat shields so you get the necessary hardware for a complete swap.
- Stainless-steel construction resists corrosion better than mild steel alternatives.
- Made to meet federal EPA emissions standards where permitted, helping pass emissions inspections in allowed states.
- Not legal for sale or installation in California, New York, Colorado or Maine due to state emissions rules.
- Some buyers reported dents from shipping and occasional early failures in isolated cases, so build consistency varies.
Verdict: A budget-conscious, near-factory front catalytic manifold for 2007–2013 Altima 2.5L owners that bundles hardware for an easier install but is restricted in several states.
4. Anytek Front Catalytic Converter with Exhaust Manifold and Gasket for Nissan Altima/Rogue 2.5L
| Vehicle fitment | Nissan Altima 2007-2012 L4 2.5L; Rogue 2008-2013; Rogue Select 2014-2015 L4 2.5L |
|---|---|
| Body material | 409L stainless steel shell |
| Position | Front |
| Manufacturer part number | 10080102-ANK02 |
This Anytek front catalytic converter combines the exhaust manifold and catalytic section into a single direct-fit replacement for Nissan Altima 2007–2012 and Rogue 2008–2015 2.5L applications. It is built with a 409L stainless steel shell and high-temperature welding intended to resist corrosion and heat in everyday driving. Typical use is a like-for-like replacement to restore emissions function and pass inspections; reviewers report it can be installed with routine exhaust work and allowed many owners to pass emissions testing. The unit is not CARB-compliant for restricted states, so it is suited to vehicles outside those regions. Practical benefits include simpler installation compared with separate manifold and converter swaps and a much lower cost than dealer parts. Some customers noted fitment and heat shield alignment issues that may require minor adjustments or welding during installation, and the smaller internal catalyst size compared with factory parts could affect long-term durability under heavy use.
Best for: Budget-conscious owners seeking an inexpensive, functional factory-replacement catalytic manifold to get their Nissan Altima back to emissions compliance and roadworthy condition.
Less Ideal for: Owners in states that require CARB-compliant parts or those who want a factory-identical OEM unit with exact fit and original catalyst volume should consider other options.
- Direct-fit combined manifold and catalytic converter simplifies replacement compared with separate components
- 409L stainless steel shell and high-temperature welding for corrosion and heat resistance
- Affordable budget option that has enabled users to pass emissions tests
- Includes gasket and is positioned for front-end replacement so fewer extra parts are needed
- Not compliant for restricted states such as California, Colorado, New York, and Maine
- Some units require minor adjustment or welding for perfect fitment and heat shield alignment
Verdict: A very affordable direct-fit front catalytic converter and manifold that restores emissions function for 2.5L Nissan Altima/Rogue models without the dealer price tag.
5. MOSTPLUS Manifold Catalytic Converter Compatible with Nissan Altima 2.5L (2007–2013)
| Fitment | Nissan Altima 2.5L 2007-2013 |
|---|---|
| OEM Part Number | 674-933 / 140E2-ZX31E / 140E2-JA02E |
| Exterior | Painted |
| Item model number | M25003 |
This MOSTPLUS manifold catalytic converter replaces the front exhaust manifold and integrated converter on 2007–2013 Nissan Altima 2.5L engines and installs using the factory-spec flanges for a straightforward swap. It is built from stainless steel and shipped with the listed OEM part numbers so it aligns with the factory mounting points and sensors for typical bolt-on replacement work. In use it restores exhaust flow and can clear P0420 related faults when oxygen sensors and other systems are functioning correctly. Buyers report it is slightly louder than some factory units and that heat shields or small brackets may require minor adjustment during reinstallation. Important to note this unit is non-CARB compliant, so it is not legal for California emission-regulated vehicles. For reliability-focused owners it offers an affordable way to return drivability and emissions operation to proper function when the original manifold converter has failed, but longevity and fitment consistency can vary compared with higher-end factory-quality replacements.
Best for: Reliability-focused owners who need a cost-effective, direct-replacement manifold catalytic converter to restore drivability and emissions function on a 2007–2013 Nissan Altima 2.5L.
Less Ideal for: Owners in California or other CARB-regulated jurisdictions and buyers who require a certified factory-quality or long-life OEM replacement.
- Direct-fit flanges and listed OEM part numbers for straightforward installation on 2007–2013 Altima 2.5L
- Stainless steel construction intended to withstand exhaust conditions
- Restores catalytic function to clear related check-engine codes when sensors are working
- Affordable aftermarket replacement compared with dealer alternatives
- Not CARB compliant and therefore not legal for vehicles subject to California emissions rules
- Some users report imperfect heat shield alignment or minor fitment adjustments needed
- Durability and long-term performance may vary versus higher-end factory-quality converters
Verdict: A budget-friendly direct-replacement manifold catalytic converter that restores exhaust function and fits 2007–2013 Nissan Altima 2.5L models.
6. Northeastern Exhaust Stainless Steel Exhaust Manifold for 2007–2012 Nissan Altima 2.5L
| Automotive Fit Type | Vehicle Specific Fit |
|---|---|
| Manufacturer | Northeastern Exhaust |
| Exterior | 409 Stainless Steel |
| OEM Part Number | 40800 |
This Northeastern Exhaust manifold is a direct-fit replacement designed specifically for the 2007–2012 Nissan Altima 2.5L. It arrives with the necessary gaskets and is built from corrosion-resistant 409 stainless steel, which helps it resist rust in regular driving conditions and extends service life compared with mild steel cast manifolds. Installation is typical of a factory-replacement manifold and is intended to bolt into the original exhaust flange locations without modification. The manufacturer notes EPA compliance for federal emissions and improved exhaust flow that can help engine efficiency and reduce emissions. Practical benefits include the supplied gaskets, a polished finish that aids longevity, and the convenience of vehicle-specific fitment. Limitations to keep in mind are regulatory: the part is not CARB compliant and cannot be used in states with stricter emissions rules, and buyers should expect dealer or shop labor for installation if they lack mechanical experience.
Best for: Risk-averse mainstream buyers who prioritize a factory-style, vehicle-specific replacement and want a durable, corrosion-resistant manifold that matches original fit and function.
Less Ideal for: Drivers who need a CARB-compliant part for use in strict-emissions states or those seeking performance-tuned or custom exhaust manifolds.
- Direct-fit design for 2007–2012 Nissan Altima 2.5L simplifies installation
- 409-grade stainless steel construction offers improved corrosion resistance
- Comes with required gaskets so you receive a complete manifold assembly
- EPA-approved for federal emissions standards and engineered to improve exhaust flow
- Not CARB compliant and cannot be sold for use in California or Colorado
Verdict: A durable, vehicle-specific stainless steel replacement manifold for 2007–2012 Altima 2.5L buyers who want a reliable factory-style swap but not for use in CARB states.
Choosing the Right Nissan Altima Exhaust Manifold: Key Factors to Consider
Fitment and Bolt Pattern Alignment
Correct fitment is the most important factor because even small misalignments can cause exhaust leaks or stress on mounting bolts. Confirming the bolt pattern and port shape ensures the manifold mates cleanly to the cylinder head and reduces the risk of gasket failure.
A properly aligned manifold makes installation straightforward and lowers the chance of exhaust gases escaping at the mating surfaces, which can affect engine sensors and performance.
Material and Heat Resistance
Manifolds experience high temperatures and thermal cycling, so material selection affects longevity and performance. Cast iron offers good durability and vibration damping, while stainless steel provides resistance to corrosion and lighter weight. Heat-resistant coatings or ceramic finishes can reduce surface temperatures and slow corrosion.
Materials that resist warping and cracking under repeated heating and cooling cycles reduce the need for premature replacement and maintain sealing integrity over time.
Flange and Port Design
The shape and finish of flanges and ports influence flow efficiency and sealing. Smooth, matched ports reduce turbulence and backpressure, which helps engine breathing. Flat, machined flanges ensure even gasket compression and lower the risk of leaks.
Uneven or poorly finished mating surfaces increase the likelihood of exhaust manifold gasket failure and can produce the ticking noises associated with escaping exhaust gases.
Thermal Management and Heat Shielding
Effective thermal management protects nearby components and reduces under-hood temperatures. Built-in heat shields, thermal barriers, or insulating coatings help direct heat down the exhaust path and away from sensitive parts like wiring and intake components.
Lower under-hood temperatures also help preserve hoses, sensors, and plastics, and can reduce heat soak into the engine bay that affects performance.
Ease of Installation and Hardware Compatibility
Ease of installation matters for DIYers and technicians alike. Manifolds that use factory-style mounting points, standard hardware sizes, and match original gasket dimensions shorten install time and reduce frustration.
Consider whether the manifold requires any modification to exhaust downpipes or accessories. Products that align with OEM attachment methods typically simplify installation and decrease the likelihood of fitment surprises.
Durability and Resistance to Common Failure Modes
Look for construction that addresses common causes of failure such as cracking, gasket blowouts, and rust-through. Reinforced welds, adequate wall thickness, and corrosion-resistant finishes all contribute to a longer service life.
Durability reduces the chance of repeat visits for repairs and helps maintain consistent engine performance and emissions control over the life of the vehicle.
How We Chose the Best Nissan Altima Exhaust Manifold
We selected products by focusing on attributes that directly affect fit, longevity, and engine operation for the Nissan Altima. Key criteria included exact vehicle fitment and bolt pattern compatibility, material and coating choices that influence heat resistance and corrosion protection, and flange and port alignment to ensure a proper seal with the cylinder head and downstream components. We also considered thermal management properties such as heat dispersion and resistance to warping, along with ease of installation including whether standard gaskets and hardware align with factory mounting points. Products were excluded if they lacked clear fitment data for the Nissan Altima, used substandard materials likely to warp or crack under normal exhaust temperatures, or required nonstandard modifications to mating components. We prioritized manifolds that balance robust construction with practical installation characteristics and that address common failure modes in this category.
Our full evaluation process is outlined in our review methodology.
FAQ
How do I know if my Nissan Altima needs a new exhaust manifold?
Common signs include a ticking or tapping noise that changes with engine speed, a noticeable exhaust smell in the engine bay, or decreased engine performance. You might also see increased engine bay soot or smell combustion gases when the car is parked. These symptoms often indicate a leak or crack, but diagnosis should confirm the source before replacing parts.
Can I replace the exhaust manifold myself on a Nissan Altima?
Many mechanically inclined owners can perform the replacement, but it depends on tools and access. Expect to deal with rusted fasteners and tight clearances. Using proper torque sequences, new gaskets, and anti-seize on bolts helps achieve a reliable installation. If you are unsure about access or torque procedures, consult a professional.
What causes exhaust manifold cracks or leaks?
Cracks and leaks commonly stem from repeated thermal cycling, which causes metal fatigue, and from uneven torque or warped flanges. Corrosion from road salt or moisture accelerates material breakdown. Poor fitment or damaged gaskets can also allow hot gases to escape and worsen the damage over time.
Is it better to replace the gasket or the entire manifold?
If the manifold is structurally sound and the issue is only a worn gasket, replacing the gasket can fix leaks. However, if the manifold shows cracks, significant warping, or corrosion that compromises sealing surfaces, a full manifold replacement is usually the more reliable long-term solution. Consider the condition of flange faces and mounting points when deciding.
How can I diagnose an exhaust manifold leak?
Diagnosis often starts with a visual inspection for soot marks or hairline cracks around flanges and mounting bolts. With the engine cold, you can check for loose fasteners. A smoke test or listening for ticking noises while an assistant revs the engine can help pinpoint leaks. Use caution and avoid burning yourself when working near a hot exhaust.
Conclusion
Choosing the right exhaust manifold for a Nissan Altima means balancing exact fitment, material durability, and effective thermal management. Prioritize options that match the cylinder head flange and bolt pattern, use materials and finishes that resist warping and corrosion, and offer reliable sealing surfaces. Remember that easier installation and compatibility with factory gaskets and hardware will reduce headaches and potential leak points. Weigh the tradeoffs between long-term durability and installation complexity when making your choice.
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- Check out all Nissan Altima parts & accessories
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