Best Engine Intake Manifold Spacers of 2026
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Engine intake manifold spacers are a popular aftermarket modification for car enthusiasts looking to increase performance. These spacers are placed between the intake manifold and the engine block, creating a larger plenum chamber and increasing the volume of air that can enter the engine. This results in improved airflow and more power. Engine intake manifold spacers are available in a variety of materials and thicknesses to suit different engines and performance goals. They are a cost-effective way to enhance the performance of a vehicle without the need for expensive engine modifications.
At a Glance: Our Top Picks
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Top 10 Engine Intake Manifold Spacers
X AUTOHAUX Fuel Injector Spacer Set for LS1 LS6
The X AUTOHAUX Injector Spacers are designed to help you upgrade or replace fuel injectors on LS1 and LS6 truck engines with ease. These spacers allow you to switch to taller truck intake manifolds and fuel rails, ensuring a proper fit. The included O-rings provide a secure seal to prevent fuel leaks, giving you peace of mind. Made from durable materials, these spacers offer long-lasting stability and reliable performance. Plus, installation is straightforward and hassle-free, making it a direct replacement for worn or damaged parts. This set contains eight spacers, covering your engine’s needs effectively.
LOSTAR LS1 LS6 Injector Spacer Set
The LOSTAR Injector Spacer Set is crafted from high-quality materials, ensuring durability and a long lifespan. It meets strict quality control standards, which means you can trust its performance. This set allows you to easily adapt short LS Truck fuel injectors to a taller LS1 or LS6 intake manifold, making it ideal for engine swaps. Additionally, it comes with a one-year unlimited-mileage quality guarantee, so you can feel confident in your purchase and reach out for support if needed.
FUSCH Fuel Injector Spacers for LS2 to LS1/LS6
The FUSCH Injector Spacers are designed to help you fit shorter LS2 Truck fuel injectors into taller LS1 or LS6 intake manifolds and fuel rails, making your installation easier and more compatible. Each spacer extends the injector length by almost half an inch, ensuring a proper fit and improved performance. Made from durable 6061 aluminum alloy, these spacers resist corrosion and wear, so they last longer and stay reliable under tough conditions. Plus, the installation is straightforward and does not require any special tools or modifications, making it a convenient upgrade for your engine setup.
MJM Car Speaker Adapters - SAK008_69-1 Pair
MJM Car Speaker Adapters - SAK008_69-1 Pair is a convenient and easy-to-install solution for upgrading the rear deck speakers in your 2002-2011 Camry or 2003-2013 Corolla. These speaker adapter spacer rings are 1/4" thick, ensuring no clearance problems during installation. They utilize the existing vehicle mounting points, eliminating the need for any cutting or drilling. The elliptical cutouts are designed specifically to house 6x9" aftermarket speakers, allowing for a seamless fit. With these speaker adapter spacer rings, you can enjoy enhanced sound quality and a professional-looking installation without any hassle. Upgrade your car audio system with MJM Car Speaker Adapters - SAK008_69-1 Pair and experience the difference.
KH866 Engine Intake Manifold Spacers for Hyundai, Genesis, Kia, Honda
The KH866 Intake Manifold Spacers are designed to deliver reliable and high-quality performance, making sure you get exactly what you need for your vehicle. Built to match original factory specs, this product makes installation simple and hassle-free, so you can quickly get your car back on the road. Manufactured in a professional facility with plenty of stock, you can count on prompt availability when you order. Before purchasing, it’s important to double-check the product details to ensure it fits your specific vehicle model, helping you avoid any compatibility issues and ensuring a smooth experience.
WOTUPHJI LS1/LS6 to LS Truck Fuel Injector Spacer Kit 551371
The WOTUPHJI Fuel Injector Spacer is designed to help you easily fit short truck injectors onto taller LS1/LS6 intake manifolds and fuel rails, making engine upgrades or swaps smoother. Made from aircraft-grade aluminum and high-temperature rubber, it offers strong durability and resists heat, so your fuel system stays reliable. The spacers are precision-made to match factory specs, ensuring a perfect fit with your LS truck engine and simplifying installation. This 8-piece kit comes with secure O-rings that keep fuel rails tight and prevent leaks, helping you maintain proper injector alignment and fuel system performance.
MJM Car Speaker Adapters
The Universal Speaker Adapters by MJM Car Speaker Adapters are a convenient solution for upgrading your vehicle's audio system. These adapters are designed to fit most 6 1/2" aftermarket speakers, with 5 1/2" round cutouts. With a thickness of 1/4", they ensure no clearance problems, allowing for a seamless installation. The best part is that they utilize existing vehicle mounting points, eliminating the need for cutting or drilling. Whether you're a car audio enthusiast or simply want to enhance your driving experience, these speaker adapters offer a hassle-free way to achieve better sound quality in your vehicle. Upgrade your speakers with the Universal Speaker Adapters and enjoy a superior audio experience on the road.
AP Products Aluminum LP Tank Check Spacers
The AP Products Aluminum LP Tank Check Spacers are used to lift propane tanks off flat surfaces and provide clearance for the Tank Check Sensor. These spacers attach to the leveling ring on the bottom of the propane tank and are constructed of durable aluminum. The package includes four spacers.
ICT Billet Fuel Injector Spacer Set of 8
This spacer set allows you to adapt short LS3 fuel injectors into a taller LS Truck intake manifold and fuel rail. It is commonly used when swapping LS3 injectors on an LS Truck engine. These spacers are made of aerospace-grade billet aluminum from Kansas, USA, and add approximately 12.32mm (.48") of length to fuel injectors. The package includes 8 injector spacers, 4 fuel rail riser spacers, and 4 fuel rail bolts.
Rear Deck Speaker Adapter Spacer Rings for Lexus IS300
The Rear Deck 6x9" Speaker Adapter Spacer Rings are designed for Lexus IS300 vehicles manufactured between 2001 and 2005. With a thickness of 1/4", the adapters ensure no clearance issues. They are manufactured with elliptical cutouts to house 6x9" aftermarket speakers. Moreover, the adapters use the existing vehicle mounting points, which means no cutting or drilling is required.
Frequently Asked Questions (FAQs)
1. What do intake manifold spacers do?
Intake manifold spacers are aftermarket enhancements that are bolted on the back of the throttle body. They are designed to increase fuel economy, torque, and horsepower by directing the flow of air into the manifold and maximizing the volume of air that goes into the intake.
2. Do throttle body spacers do anything?
Yes, throttle body spacers can improve high-rpm power by increasing the volume of the intake plenum. They work similarly to carburetor spacers and are used with multi-port injection systems. Throttle body spacers can improve throttle response, low to mid-range power, and fuel economy.
3. Do carburetor spacers work?
Yes, carburetor spacers can provide more horsepower by increasing the volume of the intake plenum. Additionally, they act as insulators, keeping engine heat away from the carburetor to ensure cooler incoming air and fuel. Carburetor spacers are typically made from wood, aluminum, phenolic resin, or polymer.
4. What are the benefits of intake spacers?
Intake spacers provide extra room for more air to enter the intake manifold. This allows the engine to perform more efficiently and generate more horsepower and torque. While the change may not be drastic, adding a spacer can improve combustion reactions and overall engine performance.
5. Do intake manifolds increase horsepower?
A properly designed intake manifold that matches the engine's requirements can increase torque and horsepower compared to a mismatched manifold. The intake manifold is more than just a connection between the carburetor or throttle body and the cylinder head ports. It plays a crucial role in optimizing airflow and fuel delivery.
6. What are the pros and cons of a throttle body spacer?
Throttle body spacers are generally easy to install and do not cause major issues. However, in some cases, they may reduce low-end torque, particularly in smaller engines. Adjustments to intake runner length may also be necessary. Overall, installation is usually straightforward, and the benefits include improved performance and fuel efficiency.
7. What are the benefits of a phenolic spacer?
Phenolic spacers offer good insulation properties and durability. They are a compromise between wood (best insulator) and aluminum (most durable). Alternatively, polymer spacers are also durable and offer decent insulation properties, often at a lower cost compared to phenolic resin spacers.
8. What is the best material for spacers?
Spacers are typically made of metal, but other materials like nylon can be used for non-conductive applications. Nylon spacers are commonly used as screw insulators. The choice of material depends on the specific requirements of the spacer and its intended use.
9. Is a 2 inch carb spacer better than a 1 inch?
The height of a carb spacer depends on the specific application. A two-inch-tall spacer is generally a good choice for race cars operating at higher RPMs. For street cars with lower RPMs and hood clearance limitations, a one-inch spacer may be more suitable. The spacer's purpose is to optimize air-fuel mixture efficiency and vaporization.
10. What is the benefit of a 1 inch carb spacer?
A one-inch carb spacer increases the distance between the intake manifold and the bottom of the carburetor, reducing the velocity of the intake charge. This helps prevent reversion from pressure pulses and improves the efficiency of the air-fuel mixture. Four-hole spacers are commonly used to direct the airflow more effectively.
During our engine intake manifold spacer research, we found 24 engine intake manifold spacer products and shortlisted 10 quality products. We collected and analyzed 8,409 customer reviews through our big data system to write the engine intake manifold spacers list. We found that most customers choose engine intake manifold spacers with an average price of $20.68.
The engine intake manifold spacers are available for purchase. We have researched hundreds of brands and picked the top brands of engine intake manifold spacers, including X AUTOHAUX, LOSTAR, FUSCH, MJM Car Speaker Adapters, KH866. The seller of top 1 product has received honest feedback from 12,437 consumers with an average rating of 4.8.
Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.