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Oxygen sensors are vital components that help you adjust to your engine's fuel/air ratio via the electronic control unit (ECU)
you can get 25 to 50 HP from these Proform main bodies
Speedmaster Steel main girdles are machined from 1045 steel
Speedmaster Twin-Carb combine two four-barrel carburetors to achieve the best balance of drivability
they have hardened stem tips for durability and are swirl-polished
Ford C4 Transmission Performance 6 Pinion Planetary Gear Set Oxygen sensors are vital componentsSpeedmaster C4 Power Planets eliminate your weakest link! Speedmaster has redesigned the power gear sets to incorporate six pinion gears unlike a stock 3 pinion style to increase their load handling characteristics by 100 percent!. These Power Planets are precision CNC machined for precise gear alignment and consistent performance.
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