BRIAN CROWER 3604-S Tip Intake Valve Set 1MM 37MM 04-0

( Brand: Brian Crower ), ( Manufacturer Part Number: 3604-S ), ( Part Type: Intake Valve Tip )

Review BRIAN CROWER 1mm Over Tip 37mm Intake Valve Set Of For fits STD WRX 2002–2009

Introducing the Brian Crower 3604-S 1mm Standard Tip Intake Valve Set, meticulously engineered for Subaru WRX models from 2002 to 2009, and Subaru Impreza WRX STI models from 2004 to 2005. This top-tier valve set is an essential upgrade for enthusiasts seeking maximum engine performance and efficiency.

The Brian Crower 3604-S Intake Valve Set boasts 1mm oversized intake valves, meticulously crafted from high-strength, heat-resistant stainless steel. These valves are designed to provide improved airflow, ensuring optimal combustion and enhanced power output. The 37mm intake valve diameter guarantees an expansive air charge, allowing more fuel to be burned efficiently for significant horsepower gains.

The set includes four valves, two intake and two exhaust, each with a standard tip design that facilitates seamless integration with most aftermarket camshafts and heads. These valves are also equipped with a precision machined seat, ensuring a leak-free seal and consistent engine operation.

The Brian Crower 3604-S Intake Valve Set is the perfect complement to other engine upgrades, such as performance camshafts and headers. By optimizing airflow and enhancing combustion efficiency, this valve set will help unleash the full potential of your Subaru's engine.

Installation of the Brian Crower 3604-S Intake Valve Set is streamlined, with no need for costly machine work or extensive modifications. The set comes complete with all necessary hardware for a straightforward installation process. However, it is always recommended to consult with a professional mechanic for optimal results.

Investing in the Brian Crower 3604-S 1mm Standard Tip Intake Valve Set is a smart choice for those seeking significant power gains and improved engine performance. With its oversized valves, precision machined seats, and seamless compatibility with popular aftermarket components, this valve set is an essential upgrade for any Subaru WRX or Impreza WRX STI enthusiast.

Brian Crower 3604-S 1mm Intake Valves for Subaru WRX (02-09 & 04-07): A Detailed Analysis

The Brian Crower 3604-S 1mm std tip 37mm intake valves are aftermarket performance parts designed for Subaru WRX models from 2002 to 2009 and 2004 to 2007. These valves offer increased airflow and improved engine performance. In this analysis, we will discuss the pros and cons of investing in these valves.

1. Enhanced Airflow: The primary advantage of replacing stock intake valves with high-performance ones is increased airflow. Brian Crower 3604-S valves offer a 1mm increase in diameter, leading to more air entering the combustion chamber per cycle, resulting in increased power output.

2. Improved Response: The larger valve diameter facilitates quicker opening and closing, enhancing the engine's response time. This is particularly beneficial for turbocharged engines like the WRX, as faster response helps reduce turbo lag.

3. Durability: Aftermarket intake valves are usually made from stronger materials than OEM components. Brian Crower uses a high-quality, forged steel material for the 3604-S valves, ensuring better resistance to thermal stress and the ability to withstand high RPMs.

4. Aesthetic Appeal: These valves offer a visual upgrade for those looking to customize their engine. The polished finish adds to the overall engine appearance.

1. Cost: The Brian Crower 3604-S intake valves are more expensive than stock OEM parts. The investment required for these valves may deter some potential buyers.

2. Installation Complexity: Installing aftermarket intake valves requires specialized tools and knowledge. If you're not confident in your ability to perform the installation process, it may be wise to consult a professional mechanic.

3. Potential for Leaks: When installing aftermarket intake valves, there is always a risk of leaks, which can lead to engine issues or even damage if not addressed promptly.

The Brian Crower 3604-S 1mm std tip 37mm intake valves offer several advantages for Subaru WRX owners, including increased airflow, improved response, durability, and aesthetic appeal. However, these advantages come at a cost, both in terms of financial investment and installation complexity. Additionally, there is a risk of potential leaks, which requires careful installation.

If you're an enthusiast looking for increased power and improved engine response, the Brian Crower 3604-S intake valves are an excellent choice. However, it's essential to weigh the pros and cons carefully and consider your budget, installation capabilities, and risk tolerance before making a decision. For those on a tighter budget or with less experience in engine modifications, it may be worth considering other performance upgrades first.

Details:

Shipping times may very depending on shipping service used. Standard and oversize head. EJ257 Stainless Steel Valves BC valves are one piece design with a friction welded Satellite tip for the best possible performance. MENU Store Pages.

Part #: 3604-S. Every valve is fully machined and features a swirl polished finish under the head. Applications: 02-09 WRX / 04-09 STI EJ205 EJ255 EJ257. Brian Crower 1mm Over STD Tip 37mm Intake Valve Set of 8 for 02-09 WRX / 04-09 STI: Thumbnails to:: Valves are made from premium stainless steel, fully machined and swirl polished ultimate air flow.

Free Shipping is either USPS Ground, UPS FedEx Smart Post, or Post. Dished head for added weight savings and increased valve control at high rpm. The undercut stem above the head area not only reduces overall weight for extended rpm potential, but also significantly improves air/fuel flow in and out of combustion chamber.

part #: 3604 prices

• $194.93-$381.04

specifications voomvalve:

• for models: Std, Wrx
• for years: 2002-2009
• brand: Brian Crower
• mpn: 3604-s
• part type: Intake Valve Tip

seller voomvalve:

• # reviews: 33918
• rating: 99.7%
• city: Arden, North Carolina

offer voomvalve:

• started: November 17, 2025
• sold: 0
• quantity: 3
• availability: In Stock
• options: Ship-to-home

returns voomvalve:

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

general voomvalve:

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

payments voomvalve:

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

shipping voomvalve:

• transit: 3-8 Days
• service: FedEx Ground / FedEx Home Delivery
• cost: $20.10
• class: Standard
• carrier: FedEx
• type: Calculated

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