Holley Power Valve (2.5″) These power valves are an important component in the power enrichment circuit of Holley's performance carburetors. They operate by using engine vacuum to control their opening and closing rate. When they open, additional fuel...

Intake Manifold Stud Kit This kit comes with all new studs to mount your EFI manifold to your cylinder head. This kit also comes with a new long allen bolt to replace to old bolt that goes through the thermostat housing to the head. Replacing your...

Throttle Body Gasket Throttle body gaskets can be a source of more issues then they are often given credit for. Anytime you remove your throttle body it is best to replace the gasket because tiny imperfections you may not see can cause vacuum leaks...

OE Throttle Position Sensor Throttle position sensors are switches on the throttle body that keep the engine control computer informed about the throttle opening. The TPS is a variable resistor that changes resistance as the throttle opens wider. The...

OE Throttle Position Sensor Throttle position sensors are switches on the throttle body that keep the engine control computer informed about the throttle opening. The TPS is a variable resistor that changes resistance as the throttle opens wider. The...

Idle Speed Adjusting Screw (w/ O-Ring) Is your Idle Speed Screw loosening by itself keeping the motor from idling properly? Is it stripped out from all of the adjustments over the years? Is it even on the throttle body anymore or did it fall out? LC...

Throttle Body Spacer Kit Our throttle body spacers feature a unique spiral bore that agitates the incoming air to promote better atomization of the fuel molecules, resulting in a more complete burn in the combustion chamber. These kits include a...

Throttle Body Air Horn Kit Designed to improve the air flow capabilities of a Sidedraft Throttle Body, these air horns are manufactured & machined in-house for the maximum accuracy and quality. The full radius design is accepted by the performance...

4 Cylinder Injector Service NOTE: Customer is responsible for paying postage to send their injectors to LC Engineering. Be sure to include the following with your injectors: Name (First & Last) Return Shipping Address Sales Order Number (Copy of...

Fuel Filter A frequently overlooked tune-up component is the fuel filter. While modern gasoline is highly refined, contaminants can still get in fuel anywhere from the filling of the transport truck to particles in your own gas tank. Little bits of...

Fuel Filter (Carb) LC Engineering carries fuel filters for your Toyota. One of the most commonly overlooked tune-up components is your fuel filter. When you consider factors like a 15 to 25 year old metal gas tank with debris inside it, junk gasoline,...

Fuel Injector Isolators (Bottom) To isolate injectors in the stock intake manifold LC Engineering suggests changing these when rebuilding the engine or when servicing the fuel injectors. LC Engineering flow-matched fuel injectors include new isolators...