Collection: Air and Fuel Delivery
Shop high-performance air and fuel delivery components designed to optimize airflow, ensure precise fuel delivery, and maximize engine performance. From fuel injection systems and throttle bodies to fuel pumps, regulators, and air intake components, these parts work together to support efficient combustion and reliable operation. Ideal for street builds, restoration projects, and high-performance applications.
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2" Phenolic Square Bore 4BBL Carburetor Spacer w/ Gaskets & Hardware
Vendor:Top Street PerformanceSKU: SP9137Regular price $28.95Sale price $28.95 Regular priceUnit price / per$31.85Save $2.90 -
3/8" Aluminum Square Bore 4BBL Carburetor Spacer w/ Gaskets & Hardware
Vendor:Top Street PerformanceSKU: SP9145Regular price $33.95Sale price $33.95 Regular priceUnit price / per$37.35Save $3.40 -
Billet Aluminum Throttle Cable Bracket - Black
Vendor:Top Street PerformanceSKU: JM3101BKRegular price $62.48Sale price $62.48 Regular priceUnit price / per$71.00Sold out -
Billet Aluminum Throttle Cable Bracket - Blue
Vendor:Top Street PerformanceSKU: JM3101BLRegular price $62.48Sale price $62.48 Regular priceUnit price / per$71.00Save $8.52 -
Billet Aluminum Throttle Cable Bracket - Chrome
Vendor:Top Street PerformanceSKU: JM3101CRegular price $62.48Sale price $62.48 Regular priceUnit price / per$71.00Save $8.52 -
Billet Aluminum Adjustable Telescopic Fuel Log for Holley 4150 and 4500 Style Carburetors
Vendor:Top Street PerformanceSKU: JM3110Regular price $81.47Sale price $81.47 Regular priceUnit price / per$92.58Save $11.11 -
4-Piece Carburetor Stud Kit - 3 1/4"
Vendor:Top Street PerformanceSKU: SP9122Regular price $10.95Sale price $10.95 Regular priceUnit price / per$12.05Save $1.10 -
4-Piece Carburetor Stud Kit - 2 1/4"
Vendor:Top Street PerformanceSKU: SP9128Regular price $8.95Sale price $8.95 Regular priceUnit price / per$9.85Save $0.90 -
4-Piece Carburetor Stud Kit - 2 3/4"
Vendor:Top Street PerformanceSKU: SP9129Regular price $9.95Sale price $9.95 Regular priceUnit price / per$10.95Save $1 -
Universal GM LS and LT Swap Cold Air Intake Kit
Vendor:Top Street PerformanceSKU: 81091Regular price $259.71Sale price $259.71 Regular priceUnit price / per$295.13Save $35.42 -
GM LS 104mm Cast Aluminum Throttle Body Elbow with 4150 Flange - Polished
Vendor:Top Street PerformanceSKU: 81141PRegular price $192.50Sale price $192.50 Regular priceUnit price / per$218.75Save $26.25 -
GM LS 104mm Cast Aluminum Throttle Body Elbow with 4150 Flange - Black
Vendor:Top Street PerformanceSKU: 81141BKRegular price $178.75Sale price $178.75 Regular priceUnit price / per$203.13Save $24.38 -
GM LS 104mm Cast Aluminum Throttle Body Elbow with 4150 Flange - Satin
Vendor:Top Street PerformanceSKU: 81141Regular price $165.00Sale price $165.00 Regular priceUnit price / per$187.50Save $22.50 -
3/4" Aluminum Open Port 4BBL Square Bore to Quadrajet Adapter Kit
Vendor:Top Street PerformanceSKU: SP9130Regular price $41.95Sale price $41.95 Regular priceUnit price / per$46.15Sold out -
1" Phenolic Square Bore 4BBL Carburetor Spacer
Vendor:Top Street PerformanceSKU: SP9136SRegular price $14.95Sale price $14.95 Regular priceUnit price / per$16.45Sold out -
1" Phenolic Square Bore 4BBL Carburetor Spacer Kit
Vendor:Top Street PerformanceSKU: SP9136Regular price $25.95Sale price $25.95 Regular priceUnit price / per$28.55Save $2.60 -
Velocity GM LS 102mm Fly-by-Wire Billet Aluminum Throttle Body Housing - Black
Vendor:Top Street PerformanceSKU: 81041BKRegular price $440.00Sale price $440.00 Regular priceUnit price / per$500.00Save $60 -
Velocity High-Flow Fuel Injectors for LS1, LS2, LS6, and 5.0L Coyote, 100 lbs/hr
Vendor:Top Street PerformanceSKU: 81050-100Regular price $527.33Sale price $527.33 Regular priceUnit price / per$527.33Sold out -
Velocity High-Flow Fuel Injectors for LS1, LS2, LS6, and 5.0L Coyote, 130 lbs/hr
Vendor:Top Street PerformanceSKU: 81050-130Regular price $694.40Sale price $694.40 Regular priceUnit price / per$694.40 -
Velocity High-Flow Fuel Injectors for LS1, LS2, LS6, and 5.0L Coyote, 160 lbs/hr
Vendor:Top Street PerformanceSKU: 81050-160Regular price $816.67Sale price $816.67 Regular priceUnit price / per$816.67
About Our Air and Fuel Delivery
Air and fuel delivery systems are responsible for supplying the engine with the correct mixture of air and fuel needed for combustion. This balance is critical for engine performance, efficiency, and reliability. Proper airflow ensures the engine can “breathe,” while precise fuel delivery provides the energy needed for combustion.
Modern systems often use electronic fuel injection (EFI), which relies on sensors and control units to regulate fuel delivery based on engine conditions. These systems offer improved throttle response, better fuel efficiency, and more consistent performance compared to traditional carburetors.
Key components in air and fuel delivery systems include throttle bodies, fuel injectors, fuel pumps, fuel pressure regulators, air filters, and intake components. These parts work together to ensure the correct air-fuel ratio is maintained under all operating conditions.
Upgrading air and fuel delivery components can significantly improve engine performance. High-performance systems increase airflow, improve fuel atomization, and allow for more precise control of combustion. This can result in increased horsepower, improved throttle response, and better overall efficiency.
Whether you're converting from a carburetor to EFI or upgrading individual components, optimizing your air and fuel delivery system is essential for achieving reliable performance and maximizing engine output.








