Bosch Platinum or NGK Spark Plugs
CORV
See Page 77
AC Delco Spark Plugs
Original equipment spark plugs are designed to totally complement every other component in your factory ignition system. The resistance in AC spark plugs is perfectly matched to your ignition system so that radio interference is minimal.You'll realize optimum performance when AC Delco plugs are used in an AC Delco ignition system. 303134 84 (Set of 8)................................................. 30.85 303174 85-86 w/Cast Iron Heads (Set of 8).......................... 29.15 304757 86-87 w/Aluminum Heads (Set of 8)........................ 27.00 304755 88-91 Exc. ZR-1 (Set of 8).................................... 30.25 304760 93-95 LT-1 (Set of 8)........................................... 81.10 304794 96 LT-1/LT-4 (Set of 8)..................................... 75.70 304759 90-92 ZR-1 (Set of 8).......................................... 31.00 304756 93-95 ZR-1 (Set of 8).......................................... 82.80
EGR System EGR (Exhaust Gas Recirculation) valves should be inspected and serviced every 12-15000 miles. Symptoms of faulty EGR valves are over heating, loss of power, engine stall, rough idle, surging, and detonation. 304455 85-86 EGR Pipe..............................................75.70 304364 84 EGR Valve........................................................... 77.25 304223 85 EGR Valve – Auto Trans (ND)........................... 136.30 304431 85 EGR Valve – Manual Trans.................................. 60.75 304780 86-91 EGR Valve........................................................... 82.80 304226 92-95 EGR Valve – Auto Trans...................................... 82.35 304314 92-95 EGR Valve – Manual Trans................................ 102.95 304209 93-95 ZR1 EGR Valve.................................................. 165.50 304226 96 EGR Valve-All...................................................... 82.35 304313 84 EGR Valve Gasket.................................................. 2.50 304244 85-91 EGR Valve Gasket.................................................. 4.10 304131 92-96 EGR Valve Gasket.................................................. 6.35
EGR Pipe Heat Shield
EGR Secondary Check Valves EGR secondary air injection check valve pipes (some call it a tube).
This is easily damaged when you remove it to do engine repairs. It fits both LT1 and LT4 engines. 304262 92-96 Left EGR Secondary AIR Check Valve Tube..... 66.25 304093 92-96 Right EGR Secondary AIR Inj Check Valve Pipe...99.30
304725 OR 304743 SHOWN
Have time and heat taken their toll on your Corvette's EGR Pipe Heat Insulation Shield? In the past, replacement of this heat shield was time consuming and dangerous, let alone costly. Now you can safely and quickly replace the heat shield without removing the EGR pipe! Enjoy the extra time and money you save!
304725 Upper Heat Shield 11-1/2" Long (Fits 85-88, some 89)-Wrap and Velcro. Measure before ordering, some 85-88 cars are 15” long and then use part # 304743.......................................... 20.90 304743 Upper Heat Shield 15" Long (Fits some 89, 90-91)-1 pc. Slides over............................. 23.15 304113 87-91 EGR Pipe Shield-Lower.............................. 11.40 4’ x 4’ Square Foil Shield Held on with Velcro.
EGR Control Valve Relay Solenoid • Replacement Solenoid • Bolt-On Installation • Corrects Stalling, Rough Idle, Engine Knock, Surging or Hesitation Caused by an Inoperative or Incorrectly Functioning Solenoid The EGR valve is opened and closed by the EGR Control Valve Relay Solenoid. 304115 85-91 ................................................................................ 77.25 304108 92-96 ................................................................................ 84.95 664138 92-96 EGR Solenoid Connector Plug with Wire................. 79.95
304455 304944
EGR Pipe
85-86....................................................... 75.70 90-91....................................................... 75.70
AIR System - See Page 73
66
we accept
304704 86-91 EGR Valve Temperature Indicator Switch........ 66.25 664008 86-91 EGR Valve Temperature Switch Plug with Wires............................................. 10.15 Electrical components such as coils, spark plugs, wires, ECM’s, switches and sensors are NON-RETURNABLE PARTS Always refer to a factory service manual when diagnosing engine service problems. You can damage electrical components if the proper procedures are not followed. Be sure you are replacing the correct part.
• ordering information in front of catalog