AED 1/2" Birchwood Carburetor Spacer - Standard Holley 36005R 2a/1 and SFI 3

2a/1 and SFI 3

Noise attenuating ear muffs surround the speakers to hugely reduce external noise and improve the levels of comfort

and drag race applications

Simpson offers 3 types of restraint mounting hardware

1984-1992 Toyota 4Runner

AED 1/2" Birchwood Carburetor Spacer - Standard Holley 36005R 2a/1 and SFI 3AED Carburetor Spacers offer many distinct advantages that are worth mentioning. Besides traditional tuning changes in plenum volume which can improve torque and power output, Birchwood is a great thermal barrier. By keeping fuel bowls cool you get a noticeable increase in fuel density, resulting in a better charge available for combustion. Results on the dyno of up to 20 horsepower. AED originally designed these spacers for racing but soon found out