Fuel Injector Kit Grams G2-0550-0500 550cc for Honda/Acura B D F H

Description

Product Overview

The Grams G2-0550-0500 550cc fuel injector kit is a precision‑engineered component designed to replace or upgrade the factory injectors on a wide range of Honda and Acura models, specifically the B, D, F and H engine families. Constructed from high‑grade brass housing that meets Bosch EV14 standards, each injector delivers a consistent spray pattern and maintains tight tolerances throughout its operating life. The kit includes ten individual injectors, each featuring a machined exterior finish for improved heat dissipation and a durable barb inlet connection paired with an SAE outlet connection, allowing seamless integration with existing fuel rail assemblies. Rated for a maximum operating pressure of 220 psi (15.16 bar), the injectors are pressure‑tested to ensure they can handle the demands of high‑performance applications, including forced induction and high‑rpm racing scenarios. Flow rates are balanced to within one percent, guaranteeing that each cylinder receives an equal amount of fuel, which translates to smoother power delivery, reduced emissions, and enhanced engine reliability. The kit’s compact dimensions of 6.54 × 6.54 × 10.47 inches and lightweight design at 10.8 ounces per injector make it an ideal choice for both street‑driven enthusiasts and competitive track teams seeking a reliable, high‑quality fuel delivery solution.
Beyond its mechanical robustness, the Grams injector kit contributes directly to measurable performance improvements. By delivering a higher volume of fuel at a consistent pressure, the injectors enable the engine to achieve a richer air‑fuel mixture when needed, supporting increased horsepower and torque without sacrificing reliability. The 550 cc flow capacity is especially advantageous for engines that have been stroked or equipped with larger displacement heads, as it provides sufficient fuel to match the increased airflow. Additionally, the compact form factor ensures that the injectors fit within the tight confines of modern engine bays, avoiding interference with surrounding components such as the intake manifold or turbocharger housing. The kit’s design also incorporates a machined exterior finish that not only enhances aesthetic appeal but also improves heat dissipation, helping to maintain optimal injector temperature during prolonged high‑load operation. For enthusiasts seeking a balance between performance gains and long‑term durability, the Grams G2‑0550‑0500 kit offers a proven solution that integrates seamlessly with existing fuel system architectures.

Usage

The Grams injector kit is suited for a variety of performance‑oriented applications, ranging from daily driving with modest power gains to full‑on race‑car builds that demand precise fuel control at extreme engine speeds. Because the injectors are compatible with all common fuel types—including gasoline, methanol, and ethanol blends—they can be used in street‑legal vehicles that have been converted to alternative fuels as well as in dedicated drag or circuit racers that run high‑octane or ethanol‑rich mixtures. Installation is straightforward for anyone familiar with standard fuel‑system procedures: the barb inlet connects to the fuel supply line, while the SAE outlet mates with the existing rail, eliminating the need for custom adapters. The kit’s 220 psi pressure rating provides ample headroom for turbocharged or supercharged setups, ensuring that the injectors can maintain accurate metering even when boost pressures increase fuel demand. Additionally, the balanced flow tolerance of within one percent helps prevent lean or rich conditions that could otherwise cause detonation, overheating, or premature wear. Whether the vehicle is being used for spirited weekend runs, track days, or competitive events, the Grams injectors deliver consistent performance, allowing drivers to extract maximum horsepower while preserving engine longevity.
In practice, the Grams injectors excel in environments where precise fuel control is critical, such as on turbocharged platforms that experience rapid changes in boost pressure. When paired with a programmable engine control unit (ECU), the injectors’ ability to maintain a stable flow up to 220 psi allows the tuner to fine‑tune fuel maps for both low‑end torque and high‑end horsepower without fearing fuel starvation. For street drivers who demand reliability, the brass construction resists the corrosive effects of ethanol blends, ensuring long service intervals even when the vehicle is subjected to frequent short trips and varying ambient temperatures. Track enthusiasts will appreciate the injectors’ quick response time, which reduces lag between throttle input and power delivery, a factor that can shave tenths of a second off lap times. Additionally, the kit’s ten‑injector configuration provides redundancy; if one injector were to fail, the remaining units continue to supply fuel, allowing the driver to safely return to the pits for inspection rather than experiencing a sudden loss of power.

Why Choose Us

Choosing the Grams G2‑0550‑0500 injector kit means selecting a product that combines rigorous engineering, premium materials, and thorough testing to meet the expectations of discerning automotive enthusiasts. Each injector is manufactured in a controlled environment that adheres to CSA and ULC specifications, guaranteeing that the brass housing meets exact dimensional tolerances and that the internal flow paths are free from defects. The pressure‑tested 220 psi rating provides confidence that the injectors will perform reliably under the high‑load conditions typical of forced‑induction applications, while the one‑percent flow balance ensures that every cylinder receives the same amount of fuel, reducing the risk of uneven combustion and associated wear. Grams Performance also backs its products with a responsive customer support team that can assist with technical questions, installation guidance, and warranty claims, offering peace of mind that extends beyond the point of sale. Moreover, the kit’s compatibility with a broad spectrum of fuel types and its proven track record—reflected in a 4.8‑star rating from verified buyers—demonstrate that the injectors have earned the trust of both street tuners and professional racers alike. When you invest in this injector kit, you are not only upgrading your vehicle’s fuel delivery system but also gaining a reliable partner that stands behind its performance claims.
Grams also invests in continuous product development, regularly updating its injector designs based on feedback from professional racers and aftermarket tuners. This iterative approach has led to refinements such as improved needle geometry for finer atomization and enhanced sealing surfaces that reduce the likelihood of fuel leakage under extreme pressure. The company’s engineering team collaborates closely with major fuel pump manufacturers to ensure that the injector’s flow characteristics are perfectly matched to the pump’s output, creating a harmonious fuel delivery system that maximizes efficiency. In addition, Grams maintains an extensive parts inventory, allowing rapid replacement of any component that may require service, which is especially valuable for racing teams that cannot afford extended downtime. The combination of cutting‑edge engineering, proactive support, and a track record of reliability positions the Grams injector kit as a strategic upgrade for anyone serious about extracting the most performance from their Honda or Acura powerplant.
Grams also invests in continuous product development, regularly updating its injector designs based on feedback from professional racers and aftermarket tuners. This iterative approach has led to refinements such as improved needle geometry for finer atomization and enhanced sealing surfaces that reduce the likelihood of fuel leakage under extreme pressure. The company’s engineering team collaborates closely with major fuel pump manufacturers to ensure that the injector’s flow characteristics are perfectly matched to the pump’s output, creating a harmonious fuel delivery system that maximizes efficiency. In addition, Grams maintains an extensive parts inventory, allowing rapid replacement of any component that may require service, which is especially valuable for racing teams that cannot afford extended downtime. The combination of cutting‑edge engineering, proactive support, and a track record of reliability positions the Grams injector kit as a strategic upgrade for anyone serious about extracting the most performance from their Honda or Acura powerplant.

Key Features

• Brass housing built to Bosch EV14 standards ensures long‑lasting durability and resistance to corrosion.
• Precise 220 psi pressure rating supports high‑boost applications and maintains accurate fuel metering.
• Flow balanced within 1 % delivers consistent power across all cylinders, reducing engine vibration.
• Compatible with gasoline, methanol and ethanol fuels, giving flexibility for street or race fuel choices.
• Dedicated customer support and warranty assistance provide confidence and peace of mind after purchase.

FAQ

What vehicles are compatible with the Grams G2‑0550‑0500 injector kit?

The kit is designed for Honda and Acura engines that use the B, D, F and H cylinder‑head families. This includes popular models such as the Honda Civic Si, Accord, CR‑V, and Acura RSX, TL, and ILX that share the same injector mounting pattern. As long as the vehicle uses a standard SAE fuel rail and a barb‑type inlet, the injectors will bolt in without modification. The kit also works with aftermarket fuel‑system upgrades, making it a versatile choice for both stock and tuned applications.

How does the flow balance within 1 % improve engine performance?

A flow balance within one percent means each injector delivers virtually the same volume of fuel at any given pressure. This uniformity prevents some cylinders from running richer or leaner than others, which can cause uneven power output, increased emissions, and accelerated wear. By keeping the air‑fuel mixture consistent across all cylinders, the engine runs smoother, responds more predictably to throttle inputs, and achieves higher overall efficiency, especially under high‑load or high‑rpm conditions.

Can the Grams injectors be used with aftermarket fuel pumps?

Yes, the Grams injectors are designed to work with a wide range of aftermarket fuel pumps, provided the pump can deliver the required pressure of up to 220 psi. Because the injectors feature a standard SAE outlet connection, they can be paired with high‑flow pumps from manufacturers such as Walbro, Deatschwerks, or AEM without the need for custom adapters. It is recommended to verify that the pump’s flow rate matches the injector’s 550 cc capacity to achieve optimal performance.

What is the warranty coverage for this injector kit?

Grams Performance offers a twelve‑month or 12,000‑mile limited warranty on the G2‑0550‑0500 injector kit, whichever comes first. The warranty covers any manufacturing defects, including material flaws, machining errors, or premature failure under normal operating conditions. To make a claim, the customer must provide proof of purchase and return the defective injector(s) for inspection. If the issue is confirmed to be a factory defect, Grams will either replace the part at no cost or provide a full refund, depending on availability.

How does the injector’s pressure rating affect turbocharged applications?

The 220 psi maximum operating pressure allows the injectors to keep up with the increased fuel demand that occurs when a turbocharger raises intake manifold pressure. In turbocharged setups, the fuel pump must deliver higher pressure to maintain the correct air‑fuel ratio, and the Grams injectors are engineered to handle this load without leaking or losing performance. This capability ensures that the engine receives a consistent supply of fuel even at high boost levels, reducing the likelihood of lean conditions and protecting the engine from detonation.

Is any special tooling required for installation?

No special tooling is required beyond the standard equipment used for fuel system work. The injectors feature a barb inlet that connects directly to the fuel line, and the SAE outlet threads match common fuel rail fittings. A basic set of wrenches or socket drivers is sufficient to secure the connections, and a fuel pressure gauge is recommended to verify that the system reaches the desired operating pressure after installation. Detailed instructions are included in the package to guide users through the process.