ACL RACE SERIES 4M8263H-.25 Oversized High Performance 1GR-FE V6 .25MM Bearing

( Brand: Acl Race Series ), ( Type: Engine Crankshaft Main Bearing Set ), ( Manufacturer Part Number: 4M8263H-.25 ), ( Performance Part: Yes )

Review ACL RACE SERIES Toyota V6 .25mm Oversized High Performance Main Bearing fits TUNDRA

The ACL Race ARC4M8263H-25 bearing is an oversized, high-performance upgrade designed specifically for the Toyota 1GR-FE V6 Tundra engine. This bearing is manufactured by ACL, a renowned name in the automotive industry known for producing top-tier racing and performance parts.

This ARC4M8263H-25 crankshaft main bearing is 25mm in size, representing a significant upgrade from the stock 23mm bearing. The oversized design provides increased load capacity, enabling the engine to handle more power and torque. It is ideal for high-performance applications, such as racing or towing, where the engine is subjected to heavy loads and extreme conditions.

The bearing is made from ACL's proprietary material, which offers superior strength and durability compared to stock bearing materials. It features a precision-machined surface finish that ensures a perfect fit and minimizes friction, leading to improved engine efficiency and better performance.

The ACL Race ARC4M8263H-25 bearing is also designed with a dual lip seal system. This system provides enhanced oil containment, preventing oil leakage and ensuring optimal bearing lubrication. It also helps to maintain engine cleanliness by preventing external contaminants from entering the crankshaft.

The installation of this oversized bearing requires the use of ACL's supplied bearing adapter kit, which is included in the package. The adapter kit ensures a secure and precise fit of the new bearing in the engine block.

In summary, the ACL Race ARC4M8263H-25 is a high-performance, oversized crankshaft main bearing designed specifically for the Toyota 1GR-FE V6 Tundra engine. It offers increased load capacity, superior strength, and durability, making it an excellent choice for high-performance applications. The dual lip seal system ensures optimal oil containment and engine cleanliness. The bearing comes with a supplied adapter kit for easy and secure installation.

The ACL Race ARC4M8263H-25 bearing is an aftermarket upgrade option for the Toyota Tundra's 1GR-FE V6 engine. This bearing is oversized at 25mm and is designed for high performance use. Here are some potential pros and cons of purchasing this bearing:

1. Enhanced durability: Oversized bearings like the ACL Race ARC4M8263H-25 are designed to handle increased loads and temperatures. This makes them a good choice for high-performance applications or for those who tow heavy loads or drive their Tundra aggressively.

2. Improved engine performance: Upgrading to a high-performance bearing like the ACL Race ARC4M8263H-25 can lead to improved engine performance. This is because the bearing reduces friction and allows the engine to rotate more smoothly, which can lead to increased power and torque.

3. Better reliability: A high-performance bearing like the ACL Race ARC4M8263H-25 is designed to last longer than the stock bearing that comes with the Tundra. This can save you money in the long run by reducing the need for frequent engine repairs or replacements.

1. Cost: The ACL Race ARC4M8263H-25 bearing is more expensive than the stock bearing that comes with the Tundra. This may be a deterrent for some buyers, especially those on a tight budget.

2. Installation complexity: Installing an oversized bearing like the ACL Race ARC4M8263H-25 can be more complex than installing a stock bearing. This may require additional time, tools, and expertise.

3. Potential for noise: Some buyers report that upgrading to a high-performance bearing like the ACL Race ARC4M8263H-25 can result in increased engine noise. This is due to the fact that the bearing allows for more clearance between the crankshaft and the engine block, which can lead to more vibration and noise.

The decision to purchase the ACL Race ARC4M8263H-25 bearing for a Toyota Tundra with a 1GR-FE V6 engine depends on individual needs and priorities. If you tow heavy loads, drive aggressively, or simply want to improve your engine's performance, then this bearing may be a worthwhile investment. However, if you are on a tight budget or are concerned about the complexity of the installation process, then you may want to consider other options. Ultimately, it's important to weigh the potential benefits against the costs and make an informed decision based on your specific circumstances.

If you decide that the ACL Race ARC4M8263H-25 bearing is the right choice for your Toyota Tundra, then it's important to ensure that you purchase it from a reputable supplier and follow the installation instructions carefully. Additionally, consider investing in high-quality engine oil and filters to help ensure the longevity of the bearing and the overall health of your engine. Finally, consider having the bearing installed by a professional mechanic to ensure that it is installed correctly and efficiently.

Details:

Max Wall: 0.0983 IN. RACE Series rod and main bearings are standard components in Race engines that have set records won championships from Mexico to Bonneville - sport compact drift racing small block NASCAR, IHRA NHRA competitions. The unique combination of design, metallurgy and engineering provides RACE Series performance bearings with the endurance capability to perform where others cannot. Manufacturer: ACL Race Series, Part Number: 4M8263H-.25, condition: New: Main Bearing Set 4 RACE Series performance engine bearings are recognized as a premier brand throughout the motor sports world.

part #: 4m8263h25 prices

• $79.04-$155.18

specifications engibearing:

• for models: Tundra
• for makes: Toyota
• brand: Acl Race Series
• type: Engine Crankshaft Main Bearing Set
• manufacturer part number: 4M8263H-.25
• performance part: Yes

seller engibearing:

• rating: 99.9%
• # reviews: 126625
• city: San Leandro, California

payments engibearing:

• wallet: Apple-pay
• other
• credit card: Diners-club

shipping engibearing:

• cost: $0.00
• type: Fixed
• class: Standard
• transit: 3-7 Days
• service: Standard

offer engibearing:

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

returns engibearing:

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

general engibearing:

• Car Truck Parts Accessories > Engines Engine Parts > Engine Bearings
• condition: New

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