1. Product Overview
This manual provides essential information for the proper installation and maintenance of the WINBEST Multiple Layers Steel (MLS) Head Gasket, part number 26357PT. This aftermarket replacement cylinder head gasket is engineered with advanced design and material technology to ensure precise fit, form, and function. Each component undergoes rigorous inspection and validation to meet strict quality standards, promoting long-term durability and performance in your vehicle's engine.
2. Vehicle Compatibility
This WINBEST MLS Head Gasket (26357PT) is specifically designed for the following vehicle application:
- 2005-2009 Toyota Tacoma 2.7L DOHC 16v (Engine Code: 2TRFE)
Important Note:
Before installation, it is crucial to verify that this item fits your specific vehicle. Please enter your complete vehicle information (year, make, model, engine size) or provide your Vehicle Identification Number (VIN) to a qualified technician or supplier for accurate confirmation. Incorrect part application can lead to engine damage.
3. Installation Guidelines
Installation of a head gasket is a complex procedure that requires specialized tools, technical knowledge, and adherence to manufacturer specifications. It is strongly recommended that installation be performed by a certified automotive technician.
3.1. Pre-Installation Checks
- Ensure all mating surfaces on the engine block and cylinder head are thoroughly cleaned and free of old gasket material, carbon deposits, oil, and coolant.
- Inspect cylinder head and engine block surfaces for warpage, cracks, or damage. Machining may be required to ensure flatness.
- Verify that all cylinder head bolts are in good condition. It is often recommended to replace head bolts, especially Torque-to-Yield (TTY) bolts, as they are designed for single use.
- Confirm that all coolant passages and oil galleries are clear and unobstructed.
3.2. Installation Steps (General)
- Carefully position the new WINBEST MLS Head Gasket onto the engine block, ensuring correct orientation and alignment with dowel pins and bolt holes.
- Gently lower the cylinder head onto the engine block, aligning it with the gasket and dowel pins.
- Install the cylinder head bolts. Follow the vehicle manufacturer's specified torque sequence and torque values precisely. This typically involves multiple stages of tightening.
- Reassemble all engine components, including intake manifold, exhaust manifold, timing components, and accessories, ensuring all connections are secure and hoses are properly routed.
- Refill the cooling system with the appropriate coolant mixture and the engine with the correct type and amount of engine oil.

Image 1: The WINBEST Multiple Layers Steel (MLS) Head Gasket 26357PT. This image displays the gasket's design, including the four large circular openings for the cylinders and various smaller holes for bolts, oil passages, and coolant flow, highlighting its precise cut and multi-layer construction.
4. Post-Installation Operation
After completing the head gasket installation and reassembling the engine, perform the following steps:
- Start the engine and allow it to reach operating temperature. Monitor the temperature gauge closely.
- Check for any leaks around the cylinder head, coolant hoses, and oil pan.
- Bleed the cooling system to remove any trapped air, following the vehicle manufacturer's procedure.
- Perform a test drive to ensure proper engine operation and no signs of overheating or fluid loss.
5. Maintenance and Care
Proper maintenance of your engine's cooling and lubrication systems is vital for the longevity of your head gasket and overall engine health.
- Regularly check coolant levels and ensure the use of the correct type and concentration of antifreeze/coolant as specified by your vehicle manufacturer.
- Monitor engine oil levels and perform oil changes at recommended intervals using the appropriate oil grade.
- Periodically inspect for any signs of external leaks around the cylinder head, such as coolant seepage or oil stains.
- Address any engine overheating issues promptly, as excessive heat is a primary cause of head gasket failure.
6. Troubleshooting Common Issues
If you experience any issues after head gasket replacement, consider the following common symptoms and potential causes:
- Overheating: Could indicate air in the cooling system, improper coolant mixture, a faulty thermostat, or residual issues with the cooling system.
- White Smoke from Exhaust: Often a sign of coolant burning in the combustion chamber, potentially indicating an internal leak.
- Sweet Smell from Exhaust: Another indicator of burning coolant.
- Oil in Coolant / Coolant in Oil: Cross-contamination can occur if the gasket seal is compromised between oil and coolant passages.
- Loss of Engine Power / Misfires: A compromised head gasket can lead to loss of compression in one or more cylinders.
If any of these symptoms occur, it is recommended to have the vehicle inspected by a qualified mechanic immediately to diagnose and rectify the problem.
7. Product Specifications
| Specification | Detail |
|---|---|
| Brand | WINBEST |
| Manufacturer Part Number | W-HG3165 |
| OEM Part Number | 26357PT |
| Material | Steel (Multiple Layers Steel - MLS) |
| Item Weight | 8.8 ounces |
| Car Application | 2005-2009 Toyota Tacoma 2.7L DOHC 16v 2TRFE |
8. Warranty Information
WINBEST provides a 2-year warranty on this head gasket. This warranty covers defects in materials and workmanship under normal use and service. Please retain your proof of purchase for warranty claims. The warranty does not cover damage due to improper installation, misuse, neglect, or normal wear and tear.
9. Customer Support
For any questions, concerns, or assistance regarding the WINBEST MLS Head Gasket 26357PT, please contact our local US-based customer service team. Our team is dedicated to resolving your issues promptly and addressing any inquiries about the product or your order.
Please refer to your purchase documentation for specific contact details or visit the WINBEST official store page for support options.





