MANLEY 12898-8 Severe Intake Valves 807298018126

( Brand: Manley ), ( Manufacturer Part Number: 12898-8 ), ( Part Type: Intake Valve ), ( UPC: 807298018126 )

Review MANLEY Severe Duty Intake Valves

The Manley 12898-8 Severe Duty Intake Valves are a high-performance upgrade for your engine, designed to deliver improved airflow and enhanced combustion efficiency. These intake valves are engineered for use in high-performance applications, including racing, hot rods, and high-horsepower engines.

The Severe Duty Intake Valves feature a larger diameter than stock intake valves, allowing for a greater volume of air to flow into the cylinders with each intake stroke. The valves are made from 356 aluminum alloy, which provides excellent strength and durability while minimizing weight. The valves also have a increased stem length, which allows for the use of longer, more efficient intake runners.

The valves are designed with a unique, flat-top design, which provides maximum surface area for the intake port to seal against. This allows for a more efficient transfer of air from the intake port to the cylinder, resulting in improved power and torque.

The Severe Duty Intake Valves are also designed with a thicker valve seat, which improves sealing and reduces the risk of detonation and pre-ignition. The valves are also equipped with Manley's proprietary valve guides, which provide a precise fit and minimize the amount of play between the valve and guide.

The valves come with titanium retainers, which provide excellent strength and durability while minimizing weight. The retainers are also designed with a special locking mechanism, which ensures that the valves remain securely in place during high-performance operation.

The Manley 12898-8 Severe Duty Intake Valves are a high-quality, high-performance upgrade for your engine, designed to deliver improved airflow, enhanced combustion efficiency, and increased power and torque. They are ideal for use in high-performance applications, including racing, hot rods, and high-horsepower engines.

Manley Severe Duty Intake Valves (Part Number: 12898-8) are aftermarket intake valves designed to provide improved performance and durability for high-performance engines. These valves are made from high-quality materials and feature unique designs to enhance airflow and reduce engine heat. In this analysis, we will discuss the pros and cons of buying Manley Severe Duty Intake Valves.

1. Enhanced Airflow: Manley Severe Duty Intake Valves are designed to provide improved airflow to the engine, resulting in better combustion and increased horsepower.

2. Durability: These valves are made from high-quality materials, including stainless steel and titanium, which make them more durable than OEM valves.

3. Reduced Engine Heat: Manley Severe Duty Intake Valves have a unique design that helps to reduce engine heat, which can lead to improved engine performance and longevity.

4. Improved Engine Response: The improved airflow and reduced engine heat can lead to faster engine response and smoother power delivery.

5. Suitable for High-Performance Engines: Manley Severe Duty Intake Valves are ideal for high-performance engines that require improved airflow and durability.

1. Cost: Manley Severe Duty Intake Valves are more expensive than OEM valves, which may be a deterrent for some buyers.

2. Installation Complexity: Installing aftermarket intake valves can be a complex process, and it may require specialized tools and knowledge.

3. Potential for Leaks: There is a risk of leaks when installing aftermarket intake valves, which can lead to engine damage if not addressed promptly.

Manley Severe Duty Intake Valves offer several advantages for high-performance engines, including improved airflow, durability, reduced engine heat, and improved engine response. However, they are more expensive than OEM valves, and installation can be complex. Additionally, there is a risk of leaks, which can lead to engine damage if not addressed promptly.

If you are looking to improve the performance and durability of your high-performance engine, Manley Severe Duty Intake Valves can be an excellent investment. However, it is essential to weigh the benefits against the costs and potential complexities of installation. It is also recommended to use a reputable installer to minimize the risk of leaks and ensure proper installation. Overall, if you are willing to invest in high-quality aftermarket parts and have the necessary resources for installation, Manley Severe Duty Intake Valves can help enhance the performance and longevity of your engine.

Details:

Installation Note: These 5/16'' .311'' stem valves are ONLY available with Bead Lock keeper grooves. American Express.

part #: 128988 prices

• $260.00-$301.07

specifications voomvalve:

• brand: Manley
• mpn: 12898-8
• part type: Intake Valve
• upc: 807298018126

offer voomvalve:

• options: Ship-to-home
• availability: In Stock
• sold: 0
• quantity: 2
• started: January 3, 2026

returns voomvalve:

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

payments voomvalve:

• wallet: Apple-pay
• other
• credit card: Mastercard

general voomvalve:

• Engines Engine Parts > Valvetrain Components > Valves
• condition: New

shipping voomvalve:

• class: Standard
• transit: 5-10 Days
• cost: $0.00
• type: Fixed
• service: Standard

seller voomvalve:

• city: , Ohio
• # reviews: 611337
• rating: 98.9%

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