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If you drive an Acura TSX, the intake manifold plays a central role in throttle response, idle quality, and engine efficiency. Choosing the right intake manifold matters because poor fitment or sealing problems can cause vacuum leaks, rough idling, and driveability issues that are hard to diagnose.This guide covers seven shortlisted intake manifolds that meet common buyer needs for fit, sealing, and durability. We evaluated each option on criteria such as sealing reliability and compatibility with factory sensors and ports. Read on to see which features to prioritize before you pick a replacement.
Looking for other parts? See all Acura TSX parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | ARMLEDVJ Aluminum Intake Manifold for K24A2 / K20Z3 (Fits Acura TSX 04-08, Honda Civic Si 06-11) |  |
| Best Quality Built to a higher standard if you want something more solid | BQGIATYLB Aluminum Intake Manifold for Honda K-series (06-11 Civic Si / 04-08 Acura TSX) |  |
| Best Value The sweet spot between price and what you get | NXMZCOUT Aluminum Intake Manifold for Civic K-Series / Acura TSX |  |
| Best Budget The cheapest option that still gets the job done reliably | WENJTP 70mm Aluminum Intake Manifold for K-Series (Black) |  |
| Highest Rated A top-rated pick with lots of positive feedback | A-Premium Intake Manifold Assembly with Gasket for 2.4L DOHC |  |
| Most Popular A crowd favorite that many people choose with confidence | TRQ Intake Manifold Assembly for Acura TSX / Honda 2.4L (Model IMA08041) |  |
| Best Seller A high-volume bestseller chosen again and again | MAXWIN Intake Manifold Set for 2.4L Honda/Acura K24 Engines (MS97093) |  |
1. ARMLEDVJ Aluminum Intake Manifold for K24A2 / K20Z3 (Fits Acura TSX 04-08, Honda Civic Si 06-11)
| Compatible engines | K24A2, K20Z3 |
|---|---|
| Vehicle fit | Acura TSX 2004-2008; Honda Civic Si 2006-2011 |
| Exterior | Brushed |
This aluminum intake manifold is a direct-fit replacement for K24A2 and K20Z3 engines found in Acura TSX (2004-2008) and Honda Civic Si (2006-2011). It routes intake air to each cylinder and includes the machining precision and sealing surfaces needed to mount to the cylinder head and throttle body. Typical installation involves removing the stock manifold, transferring any sensors or fittings, and bolting this unit in place; the seller notes it is designed for straightforward fitment. The aluminum construction helps with heat resistance and durability compared with many composite units, and the machined ports aim to keep airflow consistent across cylinders for smooth idling and power delivery. Practical benefits include improved reliability over cracked plastic manifolds and the ability to withstand higher intake temperatures. Limitations are that this is a direct replacement rather than a performance-optimized plenum, so expect factory-like flow characteristics rather than significant horsepower gains, and you may need to reuse or transfer factory hardware and gaskets for a proper seal.
Best for: Balanced all-round buyers who want a durable, factory-style replacement intake manifold for routine maintenance or restoration on an Acura TSX 2004–2008 rather than a performance upgrade.
Less Ideal for: Buyers seeking a tuned performance intake or measurable horsepower increases should consider aftermarket manifolds designed specifically for forced induction or high-flow applications.
- Aluminum construction offers better heat resistance and durability than many plastic manifolds
- Built to fit K24A2 and K20Z3 engine applications for direct replacement on specified models
- Machined sealing surfaces and ports designed to promote consistent airflow across cylinders
- Not designed as a performance plenum so it will not produce notable horsepower gains over stock
Verdict: A durable, factory-style aluminum replacement manifold built to restore reliable intake function on K24A2/K20Z3-equipped Acura TSX and Civic Si models.
2. BQGIATYLB Aluminum Intake Manifold for Honda K-series (06-11 Civic Si / 04-08 Acura TSX)
| Application | 06-11 Civic Si; 04-08 Acura TSX |
|---|---|
| Throttle body opening | 72mm (port-matchable to 76mm) |
| Material | Aluminum |
| Finish | Brushed |
This cast-aluminum intake manifold is a direct-fit replacement for K-series engines found in 2006–2011 Civic Si and 2004–2008 Acura TSX models and is targeted at drivers seeking more top-end power. It enlarges runner bores and uses a tapered plenum and venturi-like geometry to accelerate airflow while preserving mid-range response, and the 72mm throttle-body opening can be port-matched to 76mm for larger aftermarket throttles. Installation is intended to use factory mounting and sensor locations so it integrates with stock fuel injection and throttle bodies, making it suitable for both naturally aspirated and turbocharged setups. Practical benefits include a durable brushed aluminum finish and improved high-rpm breathing that can yield noticeable gains on tuned engines. Limitations to keep in mind are that real-world gains depend on supporting modifications and tuning, and the part listing stresses vehicle-specific compatibility so confirm fitment for the TSX before buying.
Best for: Performance-oriented owners who prioritize improved top-end power and airflow for track or spirited driving and are prepared to tune and support the manifold with additional modifications.
Less Ideal for: Drivers seeking a simple, maintenance-free factory replacement for stock performance or those unwilling to modify fueling or engine management should consider a direct factory-quality replacement instead.
- Cast-aluminum construction for heat resistance and durability
- Larger tapered plenum and runner bores to improve high-rpm airflow
- 72mm throttle-body opening compatible with factory throttle bodies or port-matched to 76mm
- Direct-fit design that uses factory sensor and fuel injection mounting points
- Performance gains require complementary mods and ECU tuning to fully realize benefits
Verdict: A performance-focused cast-aluminum intake manifold that improves high-rpm airflow for K-series 06–11 Civic Si and 04–08 Acura TSX engines.
3. NXMZCOUT Aluminum Intake Manifold for Civic K-Series / Acura TSX
| Compatible Engines | K24A2, K20Z3 |
|---|---|
| Compatible Vehicles | Civic 2006–2011, Acura TSX 2004–2008 |
| Material | Aluminum |
| Manufacturer | NXMZCOUT |
This aluminum intake manifold is a direct-replacement style unit designed for K-series engines in 2006–2011 Civics and 2004–2008 Acura TSX models. It replaces the factory intake to restore or improve air delivery, and the listing emphasizes simpler installation steps to reduce install time. The aluminum construction should provide better heat resistance than some plastic manifolds and may help maintain steadier intake temperatures under normal driving. Buyers will appreciate the straightforward fitment claim and the focus on intake efficiency for routine maintenance or budget-minded upgrades. The product description does not include measured flow gains, port matching details, or torque specs, so expect basic, function-first performance rather than a fully tuned aftermarket unit. Fitment and finish can vary with non-branded parts, so careful inspection and standard sealing practices at installation are advisable. This unit is best for practical owners who want a cost-conscious replacement or mild improvement without needing performance calibration.
Best for: Practical optimizers who want an affordable, function-first replacement intake for routine maintenance or a mild airflow improvement on a 2004–2008 Acura TSX without investing in full performance tuning.
Less Ideal for: Enthusiasts seeking documented performance gains, measured flow data, or a fully calibrated aftermarket intake should look at purpose-built performance manifolds with proven testing.
- Aluminum construction offers improved heat resistance compared with typical plastic manifolds
- Sold as direct-fit for K24A2/K20Z3 engines used in specified Civic and Acura TSX years
- Designed to simplify installation with straightforward steps to reduce install time
- Aimed at restoring or improving intake airflow for routine maintenance or mild upgrades
- No published flow numbers, port-match information, or installation torque specifications
- Aftermarket, non-branded part may have variable fitment and finish compared with factory parts
Verdict: A budget-friendly aluminum intake manifold aimed at practical owners who need a straightforward replacement or modest intake improvement for K-series Acura TSX engines.
4. WENJTP 70mm Aluminum Intake Manifold for K-Series (Black)
| Throttle body opening | 70mm (port-matchable to 74mm) |
|---|---|
| Material | A356 cast-aluminum |
| Compatible engines | Honda/Acura K-series (K20/K24) |
This intake manifold is a budget-oriented replacement for K-series engines that swaps in a 70mm throttle-body opening and a larger tapered plenum and runners to boost high-end airflow. It is typically used by street enthusiasts upgrading intake flow for stronger top-end power while retaining usable midrange response. The manifold is cast from A356 aluminum and can be port-matched up to 74mm, which gives room for further tuning; the design aims to enhance the Venturi effect and increase intake charging compared with a factory manifold. Practical benefits are lower cost and a stronger-looking aftermarket plenum that can be adapted by a competent mechanic. Important limitations include uneven quality control reported by multiple users, with some needing to clean up welds, machine ports, or enlarge injector and flange openings for a correct fit and to stop leaks. Expect to budget extra time for test-fitting and minor machining rather than a bolt-on, guaranteed-fit unit.
Best for: Budget-conscious modifiers who want measurable top-end power gains on a K-series swap and are willing to perform or pay for minor machine work and test-fitting.
Less Ideal for: Buyers who need a guaranteed bolt-on, factory-quality replacement or who lack access to a machine shop should consider higher-end, better-toleranced options.
- Cast A356 aluminum construction for strength and heat resistance
- 70mm throttle body opening with port-matching potential up to 74mm for future upgrades
- Tapered plenum and larger runners designed to improve high-end power and airflow
- Lower-cost alternative to name-brand performance manifolds
- Fitment and machining tolerance issues reported including misdrilled flange holes and undersized injector ports
- Some units arrive with casting residue or welds that require cleanup before installation
Verdict: A very affordable K-series intake that delivers stronger top-end airflow for budget builds, provided you accept some fitment and finish work.
5. A-Premium Intake Manifold Assembly with Gasket for 2.4L DOHC
| Fitment Type | Direct Replacement |
|---|---|
| Engine | L4 2.4L DOHC |
| Material | Plastic |
| Single or Dual Plane Type | Single Plane |
| Package Quantity | 1 |
This A-Premium intake manifold is a direct-replacement plastic single-plane assembly made for 2.4L DOHC applications and ships with the necessary gaskets for installation. It installs like a factory unit with bolt patterns and ports that match the original, so it is typically used as a repair or maintenance replacement after intake damage or when rebuilding the top end. Notable features include a smooth inner wall claimed to improve airflow and a packaged set of gaskets including throttle body and intake seals, which simplifies installation. Buyers will appreciate the part's fitment accuracy and the included gaskets that reduce the need to source extra components. Limitations are that the part is plastic rather than metal, which may matter for high-heat or heavily modified engines, and long-term durability depends on installation and operating conditions. The unit comes with a one-year unlimited-mileage guarantee from the brand for added peace of mind.
Best for: Reliability-focused buyers who need a factory-quality replacement manifold that installs cleanly and minimizes downtime during routine repairs or component replacements.
Less Ideal for: Performance enthusiasts planning high-boost tuning or sustained high-temperature use should consider a metal or performance-specific intake manifold instead.
- Direct-replacement fit for 2.4L DOHC Acura/Honda applications so bolt patterns and ports align with factory locations
- Ships with intake and throttle body gaskets, reducing parts needed for installation
- Smooth internal surface designed to promote consistent airflow and reduce turbulence
- Backed by a one-year unlimited-mileage guarantee for added reliability confidence
- Constructed from plastic which may be less durable than metal options under extreme heat or high-boost conditions
Verdict: A practical, reliability-oriented direct-replacement intake manifold that fits 2.4L DOHC Acura TSX applications and includes gaskets for straightforward installation.
6. TRQ Intake Manifold Assembly for Acura TSX / Honda 2.4L (Model IMA08041)
| Material | Plastic |
|---|---|
| Includes | Gaskets |
| Manufacturer Part Number | IMA08041 |
| OEM Reference | 17100-R40-A00 |
This TRQ intake manifold is a factory-replacement style assembly for 2.4L L4 Acura TSX and compatible Honda models. It installs as a direct-fit unit and is supplied with gaskets to simplify DIY replacement; TRQ highlights pre-assembled components and instructional videos to help guide installation. The part is molded plastic with machined exterior surfaces and replaces the factory manifold and its mounting interfaces, including threaded inserts replaced by self-tapping fasteners in this design. In real use buyers report straightforward fitment and restored drivability, with quieter operation initially and typically no tuning required. Some users have noted occasional internal baffle issues on different vehicle applications, so long-term durability can vary by engine and driving conditions. This manifold is best when you want a convenient, mostly bolt-on repair that gets the engine back to normal without machining or major modifications, but those seeking a long-term performance upgrade or metal construction should consider higher-end options.
Best for: Convenience-driven owners who want a straightforward, mostly bolt-on replacement that minimizes workshop time and avoids custom work.
Less Ideal for: Buyers looking for a long-term heavy-duty or performance upgrade should choose a metal or performance-specific manifold instead.
- Direct-fit design with included gaskets for easier DIY replacement
- Pre-assembled components and available video guides reduce installation time
- Machined exterior and reinforced construction improve perceived build quality
- Made from plastic so metal durability and heat resistance are lower than cast alternatives
- Some reports of internal baffles failing on certain applications which can cause noise or rattles
Verdict: A ready-to-install, gasket-included replacement manifold that gets a 2.4L Acura TSX back on the road with minimal fuss.
7. MAXWIN Intake Manifold Set for 2.4L Honda/Acura K24 Engines (MS97093)
| Interchange Part Number | MS97093 |
|---|---|
| Includes | Intake Manifold Set |
| Compatible Engines | K24 2.4L i-VTEC (listed engine codes) |
| Fitment Years | Various years for Acura TSX, ILX, Honda Accord, Crosstour |
This MAXWIN intake manifold set is a complete replacement designed for 2.4L K24 i-VTEC engines found in Acura TSX and ILX and select Honda Accord and Crosstour models; it includes the intake manifold and associated gasket components for a one-vehicle fit. Installation is the same as replacing a factory manifold and is typically performed during engine repair or when intake gasket leaks or manifold damage occur. The listing highlights OEM-equivalent manufacturing standards and compatibility with specific model years and engine codes, which makes it suitable as a direct factory-quality replacement. Practical benefits include restoring proper air intake sealing and engine performance while avoiding the higher cost of dealer parts. Limitations are that fitment is limited to the listed K24 engine variants and buyers should verify engine code and year before ordering, and as with many aftermarket manifolds some minor fitment adjustments or inspection of mating surfaces may be needed during installation.
Best for: Risk-averse mainstream buyers who prioritize restoring factory performance and reliability with a cost-effective, like-for-like replacement for Acura TSX 2.4L engines.
Less Ideal for: Buyers seeking performance upgrades, custom intake tuning, or compatibility beyond the specified Acura and Honda K24 2.4L applications should consider other options.
- Sold as a complete intake manifold set with gaskets for direct replacement
- Manufactured to meet or exceed factory performance requirements according to the brand
- Covers specific K24 2.4L engine applications including Acura TSX and ILX which simplifies fitment for those models
- Includes parts needed per vehicle so you receive everything required for the manifold swap
- Fitment is restricted to listed years and K24 engine codes so it is not universal
- Aftermarket parts may require inspection and minor adjustments at installation to ensure perfect sealing
Verdict: A direct-fit, factory-quality intake manifold set for K24 2.4L Acura/Honda engines that simplifies replacing a worn or leaking factory manifold.
Choosing the Right Acura TSX Intake Manifold: Key Factors to Consider
Fitment And Port Alignment
Exact fitment matters because misaligned ports or mounting holes can prevent a proper seal and create vacuum leaks. When the manifold matches the intake ports and bolt pattern precisely, installation is smoother and the chances of warping or stress on bolts are reduced.
Check that the manifold accommodates the TSX sensor and vacuum port locations so you do not need adapters. A close fit also reduces the need for gaskets to compensate for gaps, which lowers long-term leak risk and improves idle stability.
Sealing Surfaces And Gasket Compatibility
The quality of the mating surfaces and the availability of compatible gaskets determine how well the manifold seals against the cylinder head. Smooth, flat sealing faces and good gasket fitment reduce the likelihood of intake manifold leak issues that cause rough idle or check-engine lights.
Ensure replacement gaskets match the manifold and head profile. Some manifolds include integrated gasket rails or molded seals that simplify assembly and cut down on sealing variables during installation.
Material And Thermal Durability
Materials affect how the manifold responds to heat cycles and exposure to fuel and cleaning chemicals. Aluminum offers stiffness and heat resistance but can transfer heat to the intake charge. Composite materials reduce heat soak and can resist corrosion, though they must be evaluated for long-term dimensional stability.
Consider the operating environment and whether the manifold will be exposed to high under-hood temperatures or aggressive solvents during cleaning, as these factors influence lifespan and sealing performance.
Vacuum And Port Provisioning
A practical manifold provides correct vacuum port locations and sizes for brake boosters, PCV systems, and other accessories. Missing or poorly sized ports often require plumbing work that can introduce additional leak points or degrade performance.
Confirm that vacuum and sensor ports are positioned for easy connection and that any included fittings meet factory specifications to avoid issues such as intake manifold vacuum leak symptoms after installation.
Ease Of Installation And Serviceability
Installation considerations include access to mounting bolts, recommended torque specs, and whether special tools or adapters are needed. A manifold that allows straightforward torque sequence and reachable fasteners reduces installation time and the risk of improper tightening.
Good serviceability also means sensor access for diagnostics and the ability to remove the manifold without disassembling unrelated components, which simplifies routine maintenance and potential intake manifold cleaning.
Design For Performance And Flow
Manifold geometry influences airflow distribution and throttle response. Designs that promote even flow to each cylinder can help maintain consistent fueling and combustion, which improves drivability and efficiency.
If you are considering a performance-oriented option, look for smoother internal transitions and tuned runner lengths that match your goals, while being mindful that aggressive flow designs may require additional engine tuning to realize gains.
How We Chose the Best Acura TSX Intake Manifold
We focused on factors that most affect day-to-day performance and long-term reliability for Acura TSX intake manifolds. Key evaluation criteria included precise fitment to the TSX intake ports and mounting points, sealing effectiveness of mating surfaces and gaskets, material durability under heat and chemical exposure, and compatibility with factory sensor locations and vacuum lines. We also considered ease of installation including provision for bolt patterns and required torque specs, along with design features that influence airflow and potential performance gains.We excluded options that required major cylinder-head modification or that did not directly fit the Acura TSX without significant adapter work. Also omitted were manifolds with unclear manufacturing tolerances or lacking information about gasket and mounting compatibility. The final list prioritizes units that minimize vacuum-leak risk, simplify installation, and hold up to routine engine service.
Our full evaluation process is outlined in our review methodology.
FAQ
What are common intake manifold symptoms on an Acura TSX?
Common symptoms often include rough idle, reduced throttle response, and a check-engine light that points to misfires or lean conditions. Drivers may also notice hissing noises under load or during idle, which can indicate a vacuum leak at the manifold gasket or mating surface.
Can I replace the intake manifold myself?
Many mechanically inclined owners can replace an intake manifold with standard hand tools, but it depends on your experience and access to service information. Correct torque specs, bolt sequence, and proper gasket seating are important, so follow a repair manual or factory procedures to avoid leaks and ensure reliable operation.
How do I diagnose an intake manifold vacuum leak?
Diagnosis often starts with a visual inspection for cracked hoses and loose fittings, followed by listening for hissing sounds while the engine runs. Smoke or spray tests can help pinpoint leaks at the manifold gasket or ports. Also check for inconsistent idle or diagnostic codes that suggest lean conditions.
Do intake manifolds require regular cleaning?
Periodic intake manifold cleaning can help remove carbon buildup that affects airflow and idle quality. The frequency depends on driving conditions and fuel quality, but cleaning is usually performed during major services or when symptoms such as rough idle or reduced throttle response appear.
How important are torque specs when installing an intake manifold?
Torque specs and the correct tightening sequence are important to achieve uniform clamping and prevent warpage or leaks. Following specified torque settings helps the gasket seal properly and reduces the chance of intake manifold leak issues after installation.
Will a performance intake manifold always improve power?
A performance-oriented manifold can change airflow characteristics and may improve power in specific RPM ranges, but gains are not guaranteed. Often additional tuning or supporting modifications are required to realize benefits, and tradeoffs in drivability or idle quality can occur.
Conclusion
When choosing an intake manifold for an Acura TSX, prioritize fitment accuracy and sealing reliability to minimize vacuum leaks and avoid driveability headaches. Consider material durability, proper vacuum port provision, and how the manifold affects airflow relative to your goals.Balance installation practicality against any performance aspirations. Following correct torque specs and ensuring gasket compatibility will pay dividends in long-term reliability and engine smoothness.
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