FAST 146106 Lsxhr Intake Manifold Port 103MM

( Brand: Fast ), ( Type: Engine Intake Manifold ), ( Manufacturer Part Number: 146106 ), ( Country/region Of Manufacture: United States ), ( Item Height: 16.000 ), ( Item Length: 24.900 ), ( Item Width: 13.400 )

Review FAST Lsxhr 103mm Intake Manifold Rectangular Port fits LS3

The 146106 LSXHR 103mm Intake Manifold for LS3 engines is a high-performance aftermarket alternative for your vehicle's factory intake manifold. This intake manifold is engineered to provide improved airflow and better throttle response, making it an excellent choice for enthusiasts seeking increased horsepower and torque.

The 103mm size of this intake manifold is designed to accommodate larger throttle bodies and larger-flowing intake runners, allowing for a more efficient airflow into the engine. The CNC-machined aluminum construction ensures a precise fit and exceptional durability, while the integrated collector design helps to reduce exhaust gas recirculation (EGR) and improve engine response.

The LSXHR Intake Manifold is designed to work seamlessly with LS3 engines and is compatible with various fuel injection systems, including EFI and carbureted applications. The manifold comes with a gasket and hardware kit, making installation a straightforward process.

Additionally, the intake manifold features integrated ports for factory emissions equipment, ensuring that your vehicle remains emissions compliant. The manifold is also designed to work with factory engine accessories such as the power steering pump and alternator, making it a convenient choice for those looking to retain factory convenience features.

In summary, the 146106 LSXHR 103mm Intake Manifold for LS3 engines is a high-performance, CNC-machined aluminum intake manifold designed to provide improved airflow, better throttle response, and increased horsepower and torque. It is compatible with various fuel injection systems, features integrated ports for emissions equipment and factory accessories, and comes with a gasket and hardware kit for easy installation.

Buying a 146106 LSX HR 103mm Intake Manifold for a port LS3 engine comes with several pros and cons that every performance enthusiast or mechanic should consider before making a purchase.

1. Enhanced Airflow: This intake manifold is designed to provide better airflow compared to the stock intake manifold. The 103mm runners are larger, which allows for more air to enter the engine, resulting in increased horsepower and torque.

2. Improved Throttle Response: The larger runners and improved design of the 146106 LSX HR intake manifold allow for quicker throttle response, resulting in smoother and more responsive engine performance.

3. Durability: This intake manifold is made from high-quality materials, making it more durable than the stock intake manifold. It can withstand higher engine temperatures and pressures, making it an excellent choice for high-performance applications.

4. Easy Installation: The installation process of the 146106 LSX HR intake manifold is relatively straightforward and can be completed in a few hours with the right tools and knowledge.

1. Cost: This intake manifold is more expensive than the stock intake manifold. The price difference may be a significant factor for some buyers, especially those on a tight budget.

2. Compatibility: This intake manifold is designed specifically for port LS3 engines. It may not be compatible with other engine types or may require additional modifications to work correctly.

3. Fuel System Upgrade: To fully take advantage of the increased airflow provided by this intake manifold, an upgraded fuel system may be required. This can add to the overall cost of the project.

The 146106 LSX HR 103mm Intake Manifold is an excellent choice for those looking to improve the performance of their port LS3 engine. The increased airflow, improved throttle response, and durability make it a worthwhile investment for high-performance applications. However, the higher cost and potential compatibility issues may be a concern for some buyers. Ultimately, the decision to purchase this intake manifold depends on the specific needs and budget of the buyer.

If you are looking to significantly improve the performance of your port LS3 engine and have the budget for it, the 146106 LSX HR 103mm Intake Manifold is an excellent choice. However, if you are on a tight budget or have compatibility concerns, it may be worth considering other options or upgrades. It is always recommended to consult with a professional mechanic or performance specialist before making any major engine modifications.

Details:

Rated for up to 45psi of boost pressure. Gains 30 HP on average over competitors' aluminum intakes. FAST 146106 LSXHR 103mm Intake Manifold for Rectangular Port LS3: designed boosted and N/A LS3 engines, the intake is not only rated 45 PSI of pressure, but also eliminates heat soak thanks to its advanced polymer construction. All accessories hardware.

Available for rectangular LS3 and raised port LS7 engines. The intake manifold also features two notorious nozzle bosses per runner for clean and easy direct port system installations. Lightweight and strong polymer construction. Virtually eliminates heat soak.

Compound fuel injector angle aims the spray pattern for ideal itemization, resulting in maximum power production and superior provability. FEATURES: Forward or firewall-facing throttle body installation. EO Number: N/A

Placing an order outside the US is easy. Original packaging. Engine Intake Manifold. A reversible top allows for forward or firewall-facing throttle body installations.

Its polymer construction is not only lightweight and high strength, but also virtually eliminates power-robbing heat soak that occurs with commonly available aluminum intake manifolds.

part #: 146106 prices

• $1325.95-$1458.17

specifications inputmanifolds:

• for models: Ls3
• brand: Fast
• type: Engine Intake Manifold
• manufacturer part number: 146106
• country/region of manufacture: United States
• item height: 16.000
• item length: 24.900
• item width: 13.400

shipping inputmanifolds:

• class: Standard
• cost: $0.00
• transit: 5-11 Days
• service: Standard
• type: Fixed

seller inputmanifolds:

• # reviews: 114691
• city: Reno, NV
• rating: 98.6%

returns inputmanifolds:

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

offer inputmanifolds:

• quantity: 2
• options: Ship-to-home
• availability: In Stock
• started: August 9, 2025
• sold: 0

payments inputmanifolds:

• wallet: Paypal
• other
• credit card: Diners-club

general inputmanifolds:

• Car Truck Parts Accessories > Air Fuel Delivery > Intake Manifolds
• condition: New

Fast 146106 Is Similar To:

• Fast 146602b Lsxrt 102mm Intake Manifold For Chevrolet Gmc 4.8l 5.3l 6.0l Trucks (63.9% similar) Makes popping noise sometimes. For sale intake, fuel rails, air breather, can sent video of truck running, still on 2012 GMC. Trucks has lifter or push rod off. Putting stock 5.3 in truck...(August 15th, 2024)
• General Motors 14052552 Intake Manifold Gmc Yukon Xl Denali 2009-2014 Ls 6.0l 6.2l Ships Fast (36.9% similar) Intake manifold GMC Yukon XL Denali 2009 -2014 ls 6.0L 6.2L ships Fast...(September 20th, 2024)
• Fast 146302b Lsxr Intake Manifolds Polymer Black Chevy Ls1 Ls2 Ls6 Efi (55.2% similar) Please review the pictures. Fast lsxhr intake manifolds' 3-PIECE modular design allows for easy disassembly and porting. While they feature a 102MM air inlet that is perfectly suited to the Fast big mouth throttle body, can also be used with stock or aftermarket 90MM 92MM bodies. Up for sale is a...(October 8th, 2024)
• Fast 355082 1997-2007 Lsx 92mm Intake Manifold Ls1 Ls6 Ls2 5.7l 6.0l (50% similar) Search for more parts Chevy corvette...(November 26th, 2024)
• Acura Rdaa157-004286 2004-2008 Tl Oem Upper Intake Manifold Plenum Fast Shipping (38.9% similar) Get your engine running smoothly again with this high-quality intake manifold. The manufacturer part number is RDAA157-004286. It is easy to install and comes with all the necessary hardware. This intake manifold is a genuine aura part and perfect for those who want to replace their old or...(December 2nd, 2024)
• Fast Fuel Air Spark Technology 54039b For Lsx 92mm Cathedral Port Intake Manifold Gen Iii Ls1 Ls2 Ls6 (44.8% similar) See 54039BLS for lower shell. Manufacturer: Fast fuel air spark technology, part number: 54039B, condition: new: lsx 92MM cathedral port intake manifold for gen iii LS1, LS2, LS6 the lsx gm LS2 and engines provides bolt-on performance gains without any loss in bottom-end...(January 25th, 2025)
• Fast 146000b Lsxr 102mm Intake Manifold Replacement Upper Shell (66.1% similar) Smaller items may be shipped in an appropriate envelope using either USPS, ups or FedEx. Fast lsxhr 102MM intake manifold replacement upper shell. Cold air intakes. Our favourite brands. Year after year, Fast engineers have released innovative products, driving the growth of aftermarket...(January 25th, 2025)
• Fast 146105b Engine Intake Manifold Fits Cadillac Escalade 07 16 6.2 L Cadil (50.7% similar) Part #: 146105B. Year after year, Fast engineers have released innovative products, driving the growth of aftermarket efi marketplace. Need advice on which exhaust system to purchase. Having trouble deciding on whether to get a folding or roll-up tonne cover...(January 26th, 2025)
• Fast Fuel Air Spark Technology 146202b For Lsxr 102mm Raised Rectangle Port Intake Manifold Ls7 (47.8% similar) Constructed from the same advanced polymer material as original Fast lsx 92MM intake manifold, but now in popular black color, lsxhr offers a host of benefits over aluminum aftermarket intakes, including lighter weight, increased strength and improved heat dissipating characteristics. Intake port...(January 28th, 2025)
• Fast Electronics 146070 Lsx lxr Intake Runner Set 102mm High Hp 8pk (42.7% similar) Intake runners - high hp composite gray Fast lsxhr gm ls-series set of...(February 6th, 2025)
• Fast 146102b Fst Intake Manifolds (59.8% similar) Photos are for reference only. Constructed from the same advanced polymer material as original Fast lsx 92MM intake manifold, but now in popular black color, lsxhr offers a host of benefits over aluminum aftermarket intakes, including lighter weight, increased strength and improved heat...(February 22nd, 2025)