1968 Chevy Corvette Performance Ignition Systems

1 - 60 of 17501 of 03
show:
sort by:
    • E3® Spark Plug
      (0 reviews)
      # 12192583
      Chevy Corvette 5.3L / 5.4L 1968, 0.375" Spark Plug by E3®, 1 Piece. With Gasket Seat. Thread Size: 14 mm. Hex Size: 13/16". If you need a replacement for your damaged spark plug, this is the part you should have. Featuring unique...
      Advanced DiamondFire electrode designProduces a faster burn
      $5.95
    • Pulstar® PlasmaCore Series Inconel Electrode Pulse Plug
      (1 reviews)
      # 21708210
      Chevy Corvette 7.0L 1968, PlasmaCore Series Inconel Electrode Pulse Plug by Pulstar®. PlasmaCore Series Inconel Electrode Pulse Plug provides great fuel efficiency as well as better performance. Moreover this part will give you...
      Increased horsepowerBetter torque
      $14.95 - $119.60
    • Taylor Cable® 8mm High Energy Wire Set
      (0 reviews)
      # 9389051
      Chevy Corvette V8 1968, 8mm High Energy Wire Set by Taylor Cable®. These wires are a top choice for either street or race applications. Each wire is cut to length and terminated with Taylor’s low-profile silicone Proboot with...
      8mm outer diameter350 ohm spiral wound core for RFI suppression
      $31.66 - $34.78
    • Taylor Cable® 8mm Spiro Pro Ignition Wire Set
      (0 reviews)
      # 9391742
      Chevy Corvette V8 1968, 8mm Spiro Pro Ignition Wire Set by Taylor Cable®. These plug wires are the top choice of racers and street enthusiasts for their high performance at an affordable price. With two layers of 100% silicone...
      8mm outer insulationSpiro-Pro wire with conductive spiral-wound core
      $61.29
    • Taylor Cable® 8mm Street Ignition Wire Set
      (0 reviews)
      # 9398010
      Chevy Corvette V8 1968, 8mm Street Ignition Wire Set by Taylor Cable®. These plug wires are the top choice of racers and street enthusiasts for their high performance at an affordable price. With two layers of 100% silicone...
      8mm outer insulationSpiro-Pro wire with conductive spiral-wound core
      $89.10 - $199.10
    • Taylor Cable® 8mm Street Thunder Ignition Wire Set
      (0 reviews)
      # 9399754
      Chevy Corvette V8 1968, 8mm Street Thunder Ignition Wire Set by Taylor Cable®. Get great performance at an extremely affordable price with Taylor’s Street Thunder ignition wires. These 8mm wires deliver all of the performance in...
      Low-resistance Kevlar helically spiral wound core conductor500 ohms resistance for EMI and RFI suppression
      $34.03
    • Taylor Cable® ThunderVolt™ 40 ohm Ferrite Core Performance Ignition Wire Set
      (0 reviews)
      # 9403122
      Chevy Corvette V8 1968, ThunderVolt™ 40 ohm Ferrite Core Performance Ignition Wire Set by Taylor Cable®. 40 ohm Ferrite Core. Gain horsepower and torque with Taylor’s Dyno-proven ThunderVolt racing plug wire sets. Low...
      Exclusive copper/nickel alloy bonded by a conductive acrylic coverFerrite spiral-wound core provides low resistance for optimum RFI and RMI suppression
      $66.06
    • Blue Streak® Premium™ Street Performance Wire Set
      (0 reviews)
      # 23424134
      Chevy Corvette 1968, Premium™ Street Performance Wire Set by Blue Streak®, Use 1 per Car. 8.5mm Wire. Made with the same premium materials and the same high standards used for manufacturing wires for winning NASCAR teams, the...
      Patented conductor offers low resistance (170 ohm/ft), more power to the plug, a hotter spark, and longer spark durationPatented wire wound ferrite core ensures maximum suppression of RFI and EMI for high performance, static free electronics
      $41.88
    • MSD® Spark Plug Wire Set
      (0 reviews)
      # 13960443
      Chevy Corvette 1968, Spark Plug Wire Set by MSD®. The MSD 8.5mm Super Conductor Wire is "the" performance wire. Engineered from the inside out, the 8.5 offers everything you have everwanted in a wire; incredibly low resistance...
      Helically wound conductorSuppresses electro and radio noise
      $40.95 - $96.95
    • MSD® Ignition Coil
      (0 reviews)
      # 13953337
      Chevy Corvette 5.4L / 7.0L 1968, Ignition Coil by MSD®. High performance Red Coil Blaster 2. If you are looking to upgrade your stock coil, or want to compliment the performance of your MSD Blaster Ignition, MSD 5, 6 or 7, the...
      Performance upgrade for canister style coilsHigh voltage and energy output
      $47.95
    • Accel® Super Coil
      (0 reviews)
      # 12671335
      Chevy Corvette 5.4L / 7.0L 1968, Super Coil by Accel®. Primary Resistance 0.7 Ohms / Secondary 11.8 k Ohms. Turn Ratio 70:1. Max Voltage 45000V. Accel Super Coils feature advanced bobbin technology, highly specialized silicone...
      The finest quality at a great priceImproves your engine's performance
      $86.32
    • Accel® Super Stock™ Coil
      (0 reviews)
      # 12691412
      Chevy Corvette 5.4L / 7.0L 1968, Super Stock™ Coil by Accel®. Primary Resistance 1.2 Ohms / Secondary 8.9 k Ohms. Turn Ratio 100:1. Max Voltage 42000V. Accel's Super Stock coils are high-performance replacements for OE canister...
      The finest quality at a great priceImproves your engine's performance
      $31.84 - $37.39
    • Accel® Super Stock™ High Vibrational Coil
      (0 reviews)
      # 12671748
      Chevy Corvette 5.4L / 7.0L 1968, Super Stock™ High Vibrational Coil by Accel®. Primary Resistance 0.6 Ohms / Secondary 9.5 k Ohms. Turn Ratio 123:1. Max Voltage 45000V. Accel's Super Stock coils are high-performance replacements...
      The finest quality at a great priceImproves your engine's performance
      $58.98
    • Mallory® Canister Style Ignition Coil
      (1 reviews)
      # 10167129
      Chevy Corvette 5.4L / 7.0L 1968, Canister Style Ignition Coil by Mallory®. 12V. For Points Type Distributors. Replace your ignition coil with a coil from Mallory, and guarantee a hot, fat spark that will give you the best power and...
      $69.39
    • Mallory® Promaster Classic Series Ignition Coil
      (0 reviews)
      # 10190556
      Chevy Corvette 5.4L / 7.0L 1968, Promaster Classic Series Ignition Coil by Mallory®. Replace your ignition coil with a coil from Mallory, and guarantee a hot, fat spark that will give you the best power and economy possible.
      $143.94
    • Taylor Cable® Blueprint HEI Distributor
      (0 reviews)
      # 9377160
      Chevy Corvette V8 5.4L HJ Engine VIN Code 1968, Blueprint HEI Distributor by Taylor Cable®. Don’t build up a modified engine with a stock distributor, especially a used part of indeterminate lineage. Instead, install a...
      Performs misfire-free up to 7500 rpmPrecision CNC machined A354 T-6 cast alloy housing for maximum accuracy
      $244.58
    • Taylor Cable® HEI Performance Replacement Distributor
      (0 reviews)
      # 9377360
      Chevy Corvette V8 5.4L HJ Engine VIN Code 1968, HEI Performance Replacement Distributor by Taylor Cable®. Don’t put an old distributor into a new engine. Replace your old, worn-out distributor with a new Taylor unit: you’ll...
      Performs misfire-free up to 6500 RPMPrecision CNC Machined A354 T-6 cast alloy housing for maximum accuracy
      $133.93
    • Taylor Cable® Race HEI Distributor
      (0 reviews)
      # 9377538
      Chevy Corvette V8 5.4L HJ Engine VIN Code 1968, Race HEI Distributor by Taylor Cable®. A race motor needs to have the hottest, most consistent spark delivery possible. Any spark scatter means that some cylinders fire too early or...
      Performs misfire-free up to 9500 RPMPrecision CNC Machined A354 T-6 cast alloy housing for maximum accuracy
      $378.51
    • MSD® Distributor
      (0 reviews)
      # 13960438
      Chevy Corvette 1968, Distributor by MSD®. You’ll never have to adjust or replace the points again and your car will run better thanks to the hot MSD sparks. Inside the CNC-machined billet housing there is an ignition module that...
      Billet aluminum housingGreat OEM update. With performance upgrades
      $229.95 - $408.95
    • Accel® DFI Dual Sync Distributor
      (0 reviews)
      # 12682354
      Chevy Corvette 1968, DFI Dual Sync Distributor by Accel®. Accel's DFI dual synch distributors generate two signals for the cam and crank for sequential fire fuel injected motors. LED readout allows you to sync up without expensive...
      One distributor generates two signals, cam and crank for sequential fire fuel injected motorsAll popular applications available
      $383.49 - $487.34
    • Mallory® 75 Series HEI Distributor with HEI Cap, RH Rotation, Coil and Mechanical Tach Drive
      (0 reviews)
      # 10166994
      Chevy Corvette 5.4L / 7.0L 1968, 75 Series HEI Distributor with HEI Cap, RH Rotation, Coil, Mechanical Tach Drive by Mallory®. GM Style Module with Built-In Digital Rev Limiter. Convert or replace your old distributor with a...
      $912.41
    • Mallory® 81 Series Billet Competition Distributor, RH Rotation
      (0 reviews)
      # 10171536
      Chevy Corvette 5.4L / 7.0L 1968, 81 Series Billet Competition Distributor, RH Rotation, Dual Magnetic Pickup by Mallory®. Adjustable Flange. Run two separate ignition systems for the rigors of racing. This distributor has a pair of...
      $517.59 - $682.79
    • Mallory® 95 Series Distributor with Stack Cap, RH Rotation and Mechanical Tach Drive
      (0 reviews)
      # 10167078
      Chevy Corvette 5.4L / 7.0L 1968, 95 Series Distributor with Stack Cap, RH Rotation, Mechanical Tach Drive by Mallory®. Retro or racing engines don’t rely on boxes full of electronics to keep the sparks flowing. This Mallory...
      $669.83
    • Mallory® Comp 9000 Front Drive Distributor
      (0 reviews)
      # 10173825
      Chevy Corvette 1968, Comp 9000 Front Drive Distributor by Mallory®. Relocate the entire distributor to the front of the engine and gain clearance for any manifold or intake configuration. You’ll also need a Distributor Hole Plug...
      $730.77
    • Mallory® Crank Trigger 65 Series Distributor without Mechanical Tach Drive
      (0 reviews)
      # 10176173
      Chevy Corvette 5.4L / 7.0L 1968, Crank Trigger 65 Series Distributor without Mechanical Tach Drive by Mallory®. This Distributors have the optimum in timing stability because the timing signal is based right off of the crankshaft....
      $440.25 - $461.69
    • Mallory® E-Fire Electronic Advance Distributor
      (0 reviews)
      # 10181197
      Chevy Corvette 5.4L / 7.0L 1968, E-Fire Electronic Advance Distributor by Mallory®. E-Fire Distributors feature state-of-the-art, all-electronic advance distributors with a built-in rev limiting, boost-proportional retard, fully...
      $545.76
    • Mallory® Magnetic Breakerless 57 Series Distributor, RH Rotation
      (0 reviews)
      # 10169122
      Chevy Corvette 5.4L / 7.0L 1968, Magnetic Breakerless 57 Series Distributor, RH Rotation, Adjustable Mechanical / Vacuum Advance by Mallory®. Improved Efficiency And Economy. Get rid of your antique points and condenser with a...
      $705.41
    • Mallory® Max-Fire Electronic Advance Distributor
      (0 reviews)
      # 10188859
      Chevy Corvette 5.4L / 7.0L 1968, Max-Fire Electronic Advance Distributor With Built-In CD Ignition by Mallory®. Max Fire Distributors feature state of the art, all electronic advance distributors with a built-in Multi-strike...
      $594.68 - $777.54
    • Professional Products® Distributor
      (0 reviews)
      # 14149915
      Chevy Corvette 5.4L / 7.0L 1968, Distributor by Professional Products®.
      Knob Provides Precise Timing SettingEasy installation
      $124.95 - $174.06
    • BTP® HEI Distributor
      (0 reviews)
      # 66975553
      Chevy Corvette 1968, HEI Distributor by BTP®. This supreme BTP part helps your ignition system to provide a powerful and well-timed spark for complete combustion and maximum horsepower in your vehicle. This performance part is made...
      Designed to make your ignition system operate at its peakMade from superior materials
      $79.77 - $82.51
    • BTP® Pro Billet HEI Distributor with Red Cap
      (0 reviews)
      # 66961895
      Chevy Corvette 5.3L / 5.4L 1968, Pro Billet HEI Distributor with Red Cap by BTP®. This supreme BTP part helps your ignition system to provide a powerful and well-timed spark for complete combustion and maximum horsepower in your...
      Designed to make your ignition system operate at its peakMade from superior materials
      $82.51
    • BTP® Pro Series Pro Billet HEI Distributor with Red Cap
      (0 reviews)
      # 66961893
      Chevy Corvette V8 5.3L / 5.4L / 7.0L 1968, Pro Series Pro Billet HEI Distributor with Red Cap by BTP®. This supreme BTP part helps your ignition system to provide a powerful and well-timed spark for complete combustion and maximum...
      Designed to make your ignition system operate at its peakMade from superior materials
      $170.81
    • AEM® Engine Position Module
      (0 reviews)
      # 58233249
      Chevy Corvette 1968, Engine Position Module by AEM®. If you’re converting your engine to a distributorless wasted-spark or coil-on-plug ignition system, this Engine Position Module (EPM) can be installed in place of the...
      Replaces factory ignition distributor when converting to wasted-spark or COP ignition systemProvides precise engine position signal to ECU
      $321.30
    • MSD® Ignition Crank Trigger
      (0 reviews)
      # 13952509
      Chevy Corvette 5.4L 1968, Ignition Crank Trigger by MSD®. 7" Balancer. For a long time, racers have known that one of the best things to do to an engine to improve its performance is to stabilize the ignition timing. The MSD Flying...
      Acurate trigger signalsNon-magnetic pickup cannot be false triggered
      $158.95
    • Mallory® Wire Retainer for 86 Series
      (0 reviews)
      # 10349603
      Chevy Corvette 1968, Wire Retainer for 86 Series by Mallory®. For Kit For Part# 20900 and 20901. Mallory has been in the ignition business since 1925, and they're determined to stay on top of the heap, spark-wise. Look to Mallory...
      $44.54
    • Mallory® Ignition Condenser
      (0 reviews)
      # 10168612
      Chevy Corvette 5.4L / 7.0L 1968, Ignition Condenser by Mallory®. Mallory has been in the ignition business since 1925, and they're determined to stay on top of the heap, spark-wise. Look to Mallory for not only distributors and...
      $12.76
    • Mallory® Ignition E-Spark Conversion Kit
      (0 reviews)
      # 10168809
      Chevy Corvette 5.4L / 7.0L 1968, Ignition E-Spark Conversion Kit by Mallory®. Window Cap Style. Replacement GM / Delco Distributors. Mallory has been in the ignition business since 1925, and they're determined to stay on top of the...
      $90.04
    • Taylor Cable® Distributor Cap
      (0 reviews)
      # 9377656
      Chevy Corvette V8 1968, Distributor Cap by Taylor Cable®. Without HEI. Periodic replacement of your distributor cap and rotor will keep your car running at peak efficiency. They should both be replaced at the same time.
      Made from alkyd moldingSuperior protection from cross firing and arcing
      $18.94
    • Taylor Cable® Distributor Cap and Rotor
      (0 reviews)
      # 9378272
      Chevy Corvette V8 1968, Distributor Cap and Rotor by Taylor Cable®. Without HEI. Periodic replacement of your distributor cap and rotor will keep your car running at peak efficiency. Here’s a matched set of distributor cap and...
      Made from alkyd moldingSuperior protection from cross-firing and arcing
      $17.99
    • Taylor Cable® Distributor Rotor
      (0 reviews)
      # 9379218
      Chevy Corvette V8 1968, Distributor Rotor by Taylor Cable®. Without HEI. Periodic replacement of your distributor rotor will keep your car running at peak efficiency. Deteriorated distributor rotors can cause misfires by allowing...
      Made from alkyd moldingSuperior protection from cross firing and arcing
      $10.32
    • MSD® Distributor Drive Gear
      (0 reviews)
      # 13954352
      Chevy Corvette 5.4L / 7.0L 1968, Distributor Drive Gear by MSD®. 0.5" ID Iron Gear. A distributor’s performance is only as good as its drive gear. MSD Ignition has put a great deal of effort into researching and testing a variety...
      Increased outer hardened layer thicknessMicro polished surface for smooth contact
      $30.95
    • MSD® Distributor Cap
      (0 reviews)
      # 13954716
      Chevy Corvette 5.4L / 7.0L 1968, Distributor Cap by MSD®. Alkyd. The cap and rotor of any ignition system must be considered mainte­nance items. Just as you change the oil and filter of your car, you should always replace the cap...
      Designed with performance in mindHigh quality material
      $24.95
    • MSD® Distributor Cap and Rotor
      (0 reviews)
      # 13953808
      Chevy Corvette 5.4L / 7.0L 1968, Distributor Cap and Rotor by MSD®. GM Points Style Socket Cap. The cap and rotor of any ignition system must be considered mainte­nance items. Just as you change the oil and filter of your car, you...
      Designed with performance in mindHigh quality material
      $30.95
    • Accel® Condenser with Brackets
      (0 reviews)
      # 12668753
      Chevy Corvette 7.0L 1968, Condenser with Brackets by Accel®. Performance condensers contain special mylar and foil windings to protect against points pitting. A Moisture proff Buna N condenser seal maximizes ignition reliability.
      The finest quality at a great priceImproves your engine's performance
      $16.49
    • Accel® Contact and Condenser Kit
      (0 reviews)
      # 12681630
      Chevy Corvette 5.4L / 7.0L 1968, Contact and Condenser Kit by Accel®. Performance condensers contain special mylar and foil windings to protect against points pitting. A Moisture proff Buna N condenser seal maximizes ignition...
      The finest quality at a great priceImproves your engine's performance
      $32.63 - $38.23
    • Accel® Delco Adjustable Vacuum Advance
      (0 reviews)
      # 12673341
      Chevy Corvette 5.4L / 7.0L 1968, Delco Adjustable Vacuum Advance by Accel®. This unit permits a seamless wide range of adjustment to both amount and rate of ignition advance. This unit helps increase horsepower and throttle...
      Permits seamless wide range of adjustment to both amount and rate of ignition advanceIncreases horsepower and throttle response
      $30.41
    • Accel® Distributor Cap and Rotor Kit
      (0 reviews)
      # 12683808
      Chevy Corvette 5.4L / 7.0L 1968, Distributor Cap and Rotor Kit by Accel®. Accel cap and rotor kits offer superior protection from "arc-thru" and crossfire. Features 60k V-rated alkyd compound, stress-relieved at molding to ensure...
      Accel’s precision-ground, highly polished compression and injection molding equipment for superior qualityHigh performance 60kV-rated tan alkyd molding compound (mineral filled polyester for late model Ford and GM parts) for superior protection from “arc-thru” and crossfire
      $32.29 - $33.67
    • Accel® Points Eliminator Kit
      (0 reviews)
      # 12670582
      Chevy Corvette 5.4L / 7.0L 1968, Points Eliminator Kit by Accel®. Put an end to high maintenance Point Ignition Systems by installing an Accel Points Eliminator Ignition Conversion Kit. By utilizing specialized electronic circuitry...
      Most accurate ignition timing systemImproves performance and fuel efficiency
      $69.94
    • Accel® Points Ignition Tune Up Kit
      (0 reviews)
      # 12687846
      Chevy Corvette 5.4L / 7.0L 1968, Points Ignition Tune Up Kit by Accel®. Accel points sets are equipped with extra thick contact arms to prevent flexing at high rpm. Performance condensers contain mylar foil windings to prevent...
      The finest quality at a great priceImproves your engine's performance
      $24.34 - $30.41
    • Mallory® Distributor Drive Belt
      (0 reviews)
      # 10349646
      Chevy Corvette 1968, Distributor Drive Belt by Mallory®. For Part# 20900, 20901. Mallory has been in the ignition business since 1925, and they're determined to stay on top of the heap, spark-wise. Look to Mallory for not only...
      $42.21
    • Mallory® Distributor Drive Gear, RH Rotation, Shaft Outside/Gear Inside Dia. 0.491''
      (0 reviews)
      # 10177898
      Chevy Corvette 5.4L / 7.0L 1968, Distributor Drive Gear RH Rotation, Shaft Outside/Gear Inside Dia. 0.491'' by Mallory®. Mallory has been in the ignition business since 1925, and they're determined to stay on top of the heap,...
      $83.09
    • Mallory® Distributor Rotor
      (0 reviews)
      # 10615919
      Distributor Rotor by Mallory®. Mallory has been in the ignition business since 1925, and they're determined to stay on top of the heap, spark-wise. Look to Mallory for not only distributors and coils, but for every component needed...
      $11.39 - $55.41
    • Professional Products® Distributor Advance Lockout Kit
      (0 reviews)
      # 14143180
      Chevy Corvette 5.4L / 7.0L 1968, Distributor Advance Lockout Kit by Professional Products®. Timing Advance Lockout Kit; For Powerfire Distributors.
      Timing Advance Lockout KitEasy installation
      $4.49
    • Professional Products® Distributor Drive Gear
      (0 reviews)
      # 14149918
      Chevy Corvette 5.4L / 7.0L 1968, Distributor Drive Gear by Professional Products®. Distributor Drive Gear; Chevy V8.
      For Powerfire DistributorGreat price
      $8.99 - $36.46
    • Professional Products® Distributor Ignition Pickup
      (0 reviews)
      # 14143157
      Chevy Corvette 5.4L / 7.0L 1968, Distributor Ignition Pickup by Professional Products®. Ignition Pickup Assembly.
      For Powerfire DistributorEasy installation
      $25.22
    • Mr. Gasket® Chrome Plated Distributor Clamp
      (0 reviews)
      # 12322165
      Chevy Corvette 7.0L 1968, Chrome Plated Distributor Clamp by Mr. Gasket®. Distributors were used in the ignition systems of virtually all cars between the Model T and only a couple of years ago. Mr. Gasket has the components to...
      Restore original tolerancesReduce spark scatter and drifting dwell
      $6.06 - $12.99
    • Mr. Gasket® Distributor Gaskets
      (0 reviews)
      # 12303773
      Chevy Corvette 5.4L / 7.0L 1968, Distributor Gaskets by Mr. Gasket®, 10 Piece. Distributors were used in the ignition systems of virtually all cars between the Model T and only a couple of years ago. Mr. Gasket has the components...
      Restore original tolerancesReduce spark scatter and drifting dwell
      $17.84
    • Mr. Gasket® Transparent Distributor Cap with Window Cap
      (0 reviews)
      # 12303566
      Chevy Corvette 5.4L / 7.0L 1968, Transparent Distributor Cap with Window Cap by Mr. Gasket®. Distributors were used in the ignition systems of virtually all cars between the Model T and only a couple of years ago. Mr. Gasket has...
      Restore original tolerancesReduce spark scatter and drifting dwell
      $34.57
    • BTP® Chrome Steel Distributor Hold Down
      (0 reviews)
      # 69334046
      Chevy Corvette V8 5.3L / 5.4L / 7.0L 1968, Chrome Steel Distributor Hold Down by BTP®. This supreme BTP part helps your ignition system to provide a powerful and well-timed spark for complete combustion and maximum horsepower in...
      Designed to make your ignition system operate at its peakMade from superior materials
      $4.40
    • BTP® Clear Aluminum Distributor Hold Down Clamp
      (0 reviews)
      # 69334047
      Chevy Corvette V8 5.3L / 5.4L / 7.0L 1968, Clear Aluminum Distributor Hold Down Clamp by BTP®. This supreme BTP part helps your ignition system to provide a powerful and well-timed spark for complete combustion and maximum...
      Designed to make your ignition system operate at its peakMade from superior materials
      $8.95



    Guides & Articles
    Since their inception at the start of the 20th century, motor vehicles with gasoline burning engines have needed a precise way to deliver an electrical spark to each of the engine's cylinders. (Note that diesel engines do not rely on an electrical spark to ignite the fuel-air mixture.) For much of the past 100 years, the spark has been delivered by the ignition...
    The question of whether to buy parts from an automotive dealer vs. ones from aftermarket manufacturers is as age-old as the automobile itself. Below, we'll take a look at things worth considering to help you make a better choice if you're facing that same question. Automobile manufacturers and dealerships always advertise the fact that their parts are "genuine"...
    This article will guide you through a generic tune up on most any car or light duty gasoline-powered vehicle built within the last 20 years or so. We will presume that you are tuning up your engine because it has reached the mileage or time point to do so, and that you are NOT performing a tune up to cure an engine performance defect. We make this distinction...