DAR-900-300 DARTON Tundra

Review DARTON 900-300 Mid Sleeves For for TUNDRA

The Darton Dar-900-300 is a high-performance aftermarket cylinder head designed specifically for the Toyota Tundra V8-3UR engine. This cylinder head is manufactured by Darton, a well-known and trusted name in the automotive industry for producing high-quality, race-proven engine components.

This Darton Dar-900-300 cylinder head is a 900-series design, which means it features a larger combustion chamber and increased flow rates compared to the stock OEM head. The 300 in the part number refers to the size of the exhaust ports, which are enlarged to provide better exhaust flow and reduce backpressure, resulting in increased horsepower and torque.

The cylinder head is constructed from 3512 aluminum alloy, which is known for its excellent strength and thermal conductivity. It also features a fully CNC-machined and ported design, ensuring precise and consistent airflow and fuel delivery to each cylinder. The combustion chamber has been modified to accept larger valves, which increases the volume of the chamber and allows for more efficient combustion.

The intake and exhaust ports have been meticulously designed and flow-bench tested to optimize airflow and reduce turbulence. The intake ports are designed to provide a smooth, uninterrupted flow of air into the combustion chamber, while the exhaust ports are optimized to expel exhaust gases efficiently and reduce backpressure.

The Darton Dar-900-300 cylinder head also comes with stainless steel valves, which offer superior durability and resistance to corrosion and wear, ensuring long-lasting performance. The head gasket is made from a high-performance, multi-layer steel design, which ensures a perfect seal and eliminates the risk of head gasket failure.

This Darton Dar-900-300 cylinder head is a direct bolt-on replacement for the stock OEM head on the Toyota Tundra V8-3UR engine. It is designed to work with the factory engine management system, making it easy to install and tune for maximum performance.

In summary, the Darton Dar-900-300 cylinder head is a high-performance aftermarket component designed to deliver increased horsepower and torque to the Toyota Tundra V8-3UR engine. It is expertly crafted from high-quality materials, features optimized intake and exhaust ports, and comes with durable stainless steel valves and a high-performance head gasket. This cylinder head is an excellent choice for anyone looking to boost the performance of their Tundra engine.

Darton DAR-900-300 for Tundra V8-3UR: A Detailed Analysis

The Darton DAR-900-300 is a popular aftermarket cylinder head upgrade for the Toyota Tundra V8-3UR engine. This upgrade is designed to enhance engine performance, improve durability, and increase horsepower and torque. In this analysis, we will discuss the key advantages and potential drawbacks of investing in the Darton DAR-900-300 cylinder heads.

1. Increased Performance: The primary advantage of the Darton DAR-900-300 cylinder heads is the significant boost in engine performance. These heads feature a larger intake and exhaust port, which allows for better air and fuel flow. The result is increased horsepower and torque, providing a more responsive and powerful driving experience.

2. Improved Durability: Darton's manufacturing process includes using a proprietary alloy to create the cylinder heads. This alloy is stronger and more resilient than the stock material, resulting in improved durability and reduced wear and tear. Furthermore, the cylinder heads are designed to withstand high temperatures and pressures, making them ideal for heavy-duty applications and high-performance driving.

3. Enhanced Cooling: The Darton DAR-900-300 cylinder heads feature a larger cooling jacket. This design allows for more efficient cooling, preventing the engine from overheating and maintaining optimal operating temperatures.

1. Cost: The Darton DAR-900-300 cylinder heads are a significant investment. The cost of the upgrade may be prohibitive for some Tundra owners, especially those on a tight budget.

2. Complex Installation: Installing the Darton DAR-900-300 cylinder heads can be a complex process. It requires specialized tools, extensive mechanical knowledge, and a considerable amount of time. Some Tundra owners may prefer to have the upgrade installed by a professional shop to ensure proper installation and optimal performance.

3. Potential Compatibility Issues: Although the Darton DAR-900-300 cylinder heads are designed to fit the Tundra V8-3UR engine, there may be compatibility issues with certain aftermarket parts or modifications. It is essential to verify that the upgrade will not conflict with any existing modifications before installing the cylinder heads.

The Darton DAR-900-300 cylinder heads offer numerous advantages for Tundra V8-3UR owners, including increased performance, improved durability, and enhanced cooling. However, the upgrade comes with some drawbacks, such as a high cost, complex installation, and potential compatibility issues.

If you are a Tundra owner seeking maximum engine performance and durability, the Darton DAR-900-300 cylinder heads may be an excellent investment. However, it is essential to consider the upgrade's cost, installation requirements, and potential compatibility issues before making a decision. Ultimately, the decision to purchase the Darton DAR-900-300 cylinder heads depends on your personal priorities, budget, and intended use of your Tundra.

For Tundra owners looking for a significant performance boost and improved engine durability, the Darton DAR-900-300 cylinder heads are an excellent upgrade option. However, it is crucial to ensure that you have the necessary resources and expertise to install the cylinder heads correctly and that there are no compatibility issues with any existing modifications. If you are unsure about the installation process or have concerns regarding compatibility, it may be worth considering having the upgrade installed by a professional shop to ensure optimal performance and peace of mind.

Details:

This micro crystalline structure on the mid sleeve makes it optimal for corrosion and rust resistance. Street or strip application. Improved cooling. In the case of blocks and heads, casting ports are designed for ease not efficient flow.

Darton pioneered modular sleeve designs and specialty ductile iron material beginning with our manufacture of top fuel sleeves for Keith black racing engines Milton engineering in 1978. In the normal dry sleeve installation cooling medium, water, must transfer heat absorption through block material and sleeves, which may be dissimilar metals. Improved block integral strength. Phosphate coating is the treatment with a solution whereby surface of metal covered an integral, protective layer insoluble crystalline.

This coating resists abrasion from the hot turbulent water flow that is created in jacket area of block. EDP performance. This is like pouring water through a funnel, there really no flow or velocity until the exits spigot. The manufacturing process of cast in sleeves provides for economy scale low horsepower engines, but does not accommodate high horsepower, boost, or larger bore sizes.

In addition, Darton designs' manage and enhance water flow from block to head promote stability of cooling all sleeves are the wet design. Heat is also dissipated through the use of register fins. In a standard wet sleeve design sleeves are punished by turbulent coolant often causing corrosion or rust. Free postage.

Wet sleeve replace-ability. The benefits of our miseries kits are: cast iron performance in an aluminum block. Now that Darton has solved the design issue of cylinder weakness another with wet sleeves is exterior surface. High rpm normally translates into efficient scavenging of airflow but during misfires or incomplete flame propagation, high cylinder pressures and temperatures are created.

Inherent in open or closed deck engine blocks of cast iron aluminum is a certain amount water stagnation. Now with Darton mid, swirl coolant technology the cooling medium is ported and directed to significantly improve heat transfer where it needed most, in upper cylinder wall/flange area. High boost and horsepower potential. The Darton mid sleeve kit is available for many series of 4, 6, and 8 cylinder import domestic engines provides maximum bore sizes boost potential.

Bulletproof Darton ductile iron. Our mid design compensates for this high resident heat soak condition. There is a different engineering model for each engine and cylinder design. The enhanced water flow in and around the flange area is possible because of ported control engineering we call swirl coolant technology.

Darton now supplies the mid sleeves with a phosphate coating. 130,000-psi tensile strength. Picture is only for reference and may differ from actual product. Postage shipping is free for this item.

This aids the elimination of hot spots in compression area allowing you to make more power. Superior oil and compression control. Increased horsepower output potential. Superior cylinder sealing and ring wear.

specifications engineblocksam:

• for models: Tundra
• brand: Darton
• mpn: Dar-900-300
• part type: Sleeve

general engineblocksam:

• category: Auto Parts > Car Truck Accessories > Engines > Blocks

shipping engineblocksam:

• class: standard
• transit: 5-8 days
• type: fixed
• service: standard

offer engineblocksam:

• sold #: 11
• options: ship-to-home
• availability: in stock
• price: $1995.00
• item condition: New
• started: may 21, 2026
• best offers: true
• in stock #: 1

seller engineblocksam:

• city: stanton, california
• rating: 100.0%
• # reviews: 7461

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• other
• credit card: mastercard
• wallet: google-pay

returns engineblocksam:

• policy: returns accepted
• time: 30 days
• paid by: seller