1997-2003 Pontiac Grand Prix Underhood Performance

Grand Prix Performance Parts including Cold Air Intakes, Supercharger Pulleys, Camshafts and more from K&N, Comp Cams and Pulley Boys. ...read more
W-Body Cold Air Induction System 501-0873-B

W-Body Cold Air Induction System 501-0873-B

$299.25

Boost your performance with our true cold air intake by Cold Air Inductions. Our intake system surpasses our competitors with superior q ...more >>

MSD Blaster Ignition Coils 8224

MSD Blaster Ignition Coils 8224

$183.99

When it comes to late model performance parts, nothing beats bolt-on and direct connection components. Especially when they improve performa ...more >>

MSD 8.5mm Super Conductor Spark Plug Wires 32789

MSD 8.5mm Super Conductor Spark Plug Wires 32789

$97.89

MSD's 8.5mm diameter Super Conductor Spark Plug wires (also called spark plug cables) are an extremely popular and well-made brand of wire. ...more >>

MSD 8.5mm Super Conductor Spark Plug Wires 32559

MSD 8.5mm Super Conductor Spark Plug Wires 32559

$89.55

MSD's 8.5mm diameter Super Conductor Spark Plug wires (also called spark plug cables) are an extremely popular and well-made brand of wire. ...more >>

Taylor 8mm Spark Plug Wires - 3.8L V6

Taylor 8mm Spark Plug Wires - 3.8L V6

$48.80

The Finest High Performance Street and Race Wire or cable Engineered to Work with Today's Sophisticated Ignitions. Taylor's Spiro-Pro outper ...more >>

Taylor Space Age Boot Protectors

Taylor Space Age Boot Protectors

$49.99

If you are no longer using factory spark plug cables and the factory heat shields, and you have a supercharged engine or other high-heat pro ...more >>

Caspers High Speed Fan Switch Kit for Pontiac Grand Am 109063

Caspers High Speed Fan Switch Kit for Pontiac Grand Am 109063

$114.79

Finally a solution to manually operate your cooling fans. Great for the track when you need to keep the engine cool while in the staging lan ...more >>

Throttle Position Sensor TPS Enhancer GM engines

Throttle Position Sensor TPS Enhancer GM engines

$99.99

The Throttle Position Sensor (TPS) Enhancer maintains maximum horsepower by optimizing the throttle signal sent to the PCM. At about 70% thr ...more >>

V Plus Voltage Booster for 3.8L Series II Engine

V Plus Voltage Booster for 3.8L Series II Engine

$89.95

The Caspers Electronics V-Plus (V+) Volt Booster is designed to increase your entire electrical system voltage by approximately 2.2 volts ab ...more >>

GM Transmission Filter and Gasket - 3800 Series II Engines

GM Transmission Filter and Gasket - 3800 Series II Engines

$91.79

Official GM Transmission Filter and Gasket Kit. Don't skip this step when you are changing your transmission fluid. This will ensure your tr ...more >>

Engine Oil Breather Filter for 3800 LS1 LS3 LS6

Engine Oil Breather Filter for 3800 LS1 LS3 LS6

$49.99

A nice finishing touch appearance part that is used on bayonet-type mounts found on the LS1 and 3800 GM engines. Made of billet aluminum, co ...more >>

Intake Air Temp Extension (IAT) Harness

Intake Air Temp Extension (IAT) Harness

$24.99

If you have changed your intake system to a K&N cone filter or even a cold air box such as the SLP or K&N, you'll definitely want to ...more >>

GM Performance Supercharger Oil

GM Performance Supercharger Oil

$26.99

Two 4 ounce bottles of GM Supercharger Oil to complete your supercharger oil change. GM recommends you check your supercharger oil every 30 ...more >>

GM Replacement Fuel Filter

GM Replacement Fuel Filter

$20.51

Often overlooked during scheduled maintenance, you should replace your fuel filter according to your owner's manual. The older your vehicle ...more >>

Air-Fuel Gauge Installation Pigtail

Air-Fuel Gauge Installation Pigtail

$19.99

Quickly and easily install your new Air/Fuel (A/F) gauge using this handy pigtail that makes installation literally a plug and play "snap!" ...more >>

NGK V-Power and Iridium Spark Plugs

NGK V-Power and Iridium Spark Plugs

$18.99

About the V-Power. Modern lean-burning, fuel efficient engines create a new set of requirements for spark plugs. NGK Spark Plugs answered ...more >>