Product Overview
The Ajusa 51109300 is a complete engine gasket set designed for specific automotive applications. This set provides various gaskets and seals necessary for engine assembly, manufactured to meet OEM quality standards. It is important to note that this particular set does not include a head gasket.

This image displays a selection of Ajusa engine components, including a large engine block gasket, various smaller metal and rubber gaskets, and fluid containers, illustrating the range of parts typically found in an engine gasket set.
Compatibility
This gasket set is compatible with Toyota vehicles manufactured between May 2015 and March 2019, specifically for 2494 c.c. (2.5L) Diesel engines.
Important Note: This kit does not contain a head gasket. Ensure this matches your specific repair requirements before installation.
Installation and Setup
Installation of engine gasket sets requires specialized knowledge and tools. It is strongly recommended that installation be performed by a qualified automotive technician to ensure proper function and prevent damage.
- Ensure the engine surfaces are clean and free from old gasket material or debris before installation.
- Refer to the vehicle manufacturer's service manual for specific torque specifications and assembly procedures.
- Use appropriate sealants where specified by the vehicle or gasket manufacturer.
- For visual guidance, Ajusa provides video tutorials on their YouTube channel. Search for "Ajusa" and the specific part number for relevant assembly instructions.

This image shows a detailed view of a black engine block gasket, highlighting its precise cutouts and material, ready for installation.
Maintenance
Proper engine maintenance, including regular oil changes and inspection of fluid levels, contributes to the longevity of engine gaskets and seals.
- Periodically check for any signs of fluid leaks around engine components.
- Address any engine overheating issues promptly, as excessive heat can damage gaskets.
Troubleshooting
If issues such as fluid leaks or engine performance problems arise after gasket installation, consider the following:
- Leaks: Re-check torque specifications on fasteners. Ensure all surfaces were clean and properly prepared during installation. Verify the correct gasket was used for the application.
- Engine Performance Issues: Confirm all engine components were reassembled correctly and all sensors and connections are secure. Consult a qualified mechanic for diagnosis.
Specifications
| Feature | Detail |
|---|---|
| Brand | Ajusa |
| Model Number | 51109300 |
| Product Type | Complete Gasket Set (without Head Gasket) |
| Compatibility | Toyota (5/2015-3/2019), 2.5L Diesel (2494 c.c.) |
| Item Weight | 700 g |
| Package Dimensions | 55 x 30 x 2.5 cm |
| Manufacturer Part Number | 51109300 |
Support and Warranty
Ajusa offers technical support for all product-related questions. For assistance, please contact Ajusa directly through their official website or designated support channels.
Information regarding specific warranty terms can be obtained by contacting Ajusa customer service or referring to the product packaging.