ACURA 19320R40A01 Thermostat Housing 348.AC1U09 2.4

( Part Type: Thermostat Housing ), ( Conditions Options: , Nippon ), ( Genuine Oem: Yes ), ( Ipn: 348.ac1u09 ), ( Descriptionpartcondition: Part Number 19320r40a01. ), ( Manufacturer Warranty: 90 Day )

Review ACURA Thermostat Housing 2.4 Liter fits TSX 2009–2013

The **Acura 348.AC1U09 Thermostat Housing (Part # 19320-R40-A01)** is a precision-engineered component designed specifically for the **2009 2013 Acura TSX (2.4L engine)**, ensuring optimal cooling system performance while maintaining reliability under demanding driving conditions. Crafted from high-quality **cast aluminum**, this thermostat housing is built to withstand the thermal stresses of modern automotive cooling systems, providing a durable and long-lasting solution for temperature regulation. The housing features a **threaded mounting design** that securely integrates with the engine block, ensuring a tight seal to prevent coolant leaks while allowing smooth operation of the thermostat assembly. Inside, the housing houses the **thermostat valve**, which controls coolant flow between the engine and radiator, preventing premature engine overheating and ensuring efficient warming during cold starts. The **precision-machined internal passages** are engineered to minimize turbulence and maximize coolant circulation, contributing to overall engine efficiency and longevity. This part is fully compatible with the **2009 2013 Acura TSX (2.4L J32 engine)** and is a direct replacement for the original equipment (OEM) component, maintaining factory specifications for a seamless fit and function. Whether used in a **restoration project, routine maintenance, or as a replacement for a failed housing**, this thermostat housing delivers the durability and performance expected from Acura s high-performance lineup. Proper installation with the correct **thermostat gasket (19320-R40-A02)** and coolant is essential to ensure optimal cooling system operation and prevent potential leaks.

### **Pros and Cons of buying a Acura 348 (AC1U09) Thermostat Housing (Part # 19320-R40-A01) for 2009-2013 TSX 2.4L Engines**

1. **Direct Fitment** This part is specifically designed for the 2009-2013 Acura TSX with the 2.4L engine (J32 engine family), ensuring compatibility without modification.

2. **OEM Quality** As an original equipment part (or a high-quality aftermarket equivalent), it should meet the same durability and performance standards as the factory unit.

3. **Prevents Overheating** A faulty thermostat housing can lead to coolant leaks or improper temperature regulation, so replacing it ensures proper engine cooling and prevents long-term damage.

4. **Easy Installation** The thermostat housing is a relatively straightforward repair, often requiring only basic tools (socket set, gasket scraper, and coolant). Many DIYers can complete the job in under an hour.

5. **Cost-Effective** Replacing the housing is far cheaper than repairing engine damage caused by overheating or coolant leaks.

6. **Includes Gasket** Many aftermarket versions come with a new gasket, reducing the risk of leaks after installation.

7. **Widely Available** This part is stocked by most auto parts retailers (O Reilly, AutoZone, RockAuto) and online marketplaces (Amazon, eBay, RockAuto), ensuring easy sourcing.

1. **Potential for Counterfeit Parts** Some aftermarket or eBay listings may sell knockoff or low-quality replicas, which could fail prematurely or leak. Buying from a reputable seller (e.g., RockAuto, Amazon Prime, or a trusted local shop) mitigates this risk.

2. **Coolant Drain and Refill Required** The process involves draining the cooling system, which means the vehicle will need to be refilled afterward, adding minor inconvenience.

3. **Gasket Replacement Necessity** Even if the housing is new, the old gasket may need to be removed thoroughly to prevent leaks. Some installers forget to clean the mating surfaces properly, leading to future issues.

4. **Labor Costs if Professional Installation** While DIY is possible, if you choose to have a shop do it, labor costs (typically $80 $150) may apply, increasing the total expense.

5. **Risk of Improper Installation** If not installed correctly (e.g., overtightening bolts, not sealing the gasket properly), it could lead to leaks or coolant loss.

6. **Thermostat Replacement Often Required** Many mechanics recommend replacing the thermostat at the same time, as it s a small, inexpensive part that may also be worn out. This adds to the cost if not already done.

7. **Potential for Hidden Damage** If the housing was leaking for an extended period, the engine bay or surrounding components (e.g., belts, hoses) might show signs of coolant exposure (corrosion, warping). A thorough inspection is advised before purchase.

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### **Conclusion**

Replacing the thermostat housing on a 2009-2013 Acura TSX 2.4L is a **practical and cost-effective solution** to prevent overheating and coolant leaks. The part is widely available, relatively easy to install, and critical for long-term engine health. However, buyers must ensure they purchase a **genuine or high-quality aftermarket part** to avoid counterfeit issues and follow proper installation procedures to prevent leaks.

If you re comfortable with basic mechanical work, **DIY installation is highly recommended** to save labor costs. If not, a reputable mechanic can handle it efficiently. Always **drain and refill the coolant system** after installation and **inspect for leaks** during the first few drives.

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1. **Purchase from a trusted source** (RockAuto, Amazon, or a local auto parts store with a return policy) to avoid counterfeit parts.

2. **Buy a complete kit** (housing gasket new thermostat if needed) for a more comprehensive fix.

3. **Follow a step-by-step guide** (e.g., from Haynes or a reliable YouTube tutorial) to ensure proper installation.

4. **Check for coolant leaks** after the first few drives and top off the coolant if necessary.

5. **Consider professional help** if you re unsure about the process or lack the tools.

**Final Verdict:** This is a **necessary and worthwhile repair** for maintaining your TSX s cooling system. With the right part and careful installation, it will extend the life of your engine and prevent costly overheating damage.

Details:

Toggle navigation Menu.: Part number 19320R40A01. Buzz Gardner. Ryan Ferrell.

Just the option. All Engines and Transmission must be shipped to a commercial address. Menu Thermostat Housing 2009 10 11 12 13 Acura TSX 2.4 Liter 19320R40A01.

part #: 19320r40a01 prices

• $22.73-$58.97

specifications ocoosys:

• for models: Tsx
• for makes: Acura
• for years: 2009-2013
• part type: Thermostat Housing
• conditions options: , Nippon
• genuine oem: Yes
• ipn: 348.ac1u09
• descriptionpartcondition: Part Number 19320r40a01.
• manufacturer warranty: 90 Day

offer ocoosys:

• options: Ship-to-home
• started: February 6, 2026
• availability: In Stock
• quantity: 1
• sold: 0

returns ocoosys:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

seller ocoosys:

• city: Pompano Beach, Florida
• # reviews: 10872
• rating: 99.8%

payments ocoosys:

• credit card: Discover
• other
• wallet: Paypal

general ocoosys:

• Car Truck Parts Accessories > Engine Cooling Components > Thermostats Housings
• condition: Used

shipping ocoosys:

• carrier: UPS
• class: Standard
• transit: 4-11 Days
• type: Fixed
• cost: $0.00
• service: UPS Ground

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