GMC C25 Ignition and Tune-Up Products

The cap 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. To make things easy, we now offer these caps as replacement kits.

Product Features:

• Stock GM HEI replacement distributor cap
• Red

Our Chevrolet front drive distributors brought the need for a distributor plug. Both are billet aluminum and feature a slip collar to ensure correct installation depth.

Product Features:

• Use On Engines w/Wet Sump Oil System And Front Drive Dist.
• Supplied w/Bronze Gear
• Must Be Used w/An MSD Crank Trigger
• Adj. slip collar mounting flange for engines w/modified deck hts.
• O-ring seals can be installed for oil press. control (Mods only)
• Special oil tract improves lubrication to the dist./cam gear
• QPQ coated polished steel shaft; guided by sealed ball bearings
• Oversized Polished Steel Shaft w/QPQ Coating

The distributor is just one piece of this type of ignition system which is typically driven by the engine’s camshaft. The distributor is the device that delivers the ignition spark to the spark plugs at a precise time, and spark timing is critical. Any wear or component out of place in this type of system will result in failure. Within the distributor and mounted to it are many individual pieces which allow the distributor and system to be maintained and repaired to keep it in top working order.

Product Features:

• Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
• Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
• Global coverage for import and/or domestic applications
• OE specified wire gauge to ensure a reliable electrical connection
• Designed to meet or exceed OE specifications in form, fit and function

Carquest Premium distributors are built to meet or exceed the original equipment (OE) specifications for each application. Our distributors are built by a manufacturer that meets IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Each distributor is supplied with the cap, rotor and any seals needed for installation. Carquest Premium distributors are 100% new and undergo extensive validation testing to ensure long-lasting ignition performance and reliability.

Product Features:

• Designed to meet or exceed OE specifications for fit, form and function
• 100% new unit with no core charges
• Precision machined shafts result in high speed accuracy and help prevent bearing failures
• Every distributor is tested to ensure reliable and long-lasting performance
• O-rings or gaskets included where applicable
• Precision Engineered ignition modules and plugs ensure proper performance plus precise connection.
• Precision machined and ground shafts assure high speed accuracy and prevent bearing failures.
• Original Equipment Equivalent high voltage ignition coils.
• 100% New Components and fasteners eliminate premature failures.

The distributor cap & rotor are just two pieces of this type of ignition system which is typically driven by the engine’s camshaft. The distributor is the device that delivers the ignition spark to the spark plugs at a precise time, and spark timing is critical. Any wear or component out of place in this type of system will result in failure. Within the distributor and mounted to it are many individual pieces which allow the distributor and system to be maintained and repaired to keep it in top working order.

Product Features:

• All products are constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
• Cap terminal conductor wires formed with precision guided machines to ensure precise final location in the final housing assembly.
• Terminal inserts manufactured to precise tolerances to ensure a guaranteed electrical connection between the cap conductor wires and spark plug wire terminals.
• Distributor rotor blade coated with RFI coating to prevent electrical magnetic interference with the vehicles electrical system.
• Distributor and rotor housings manufactured using the latest plastic technologies to guarantee di-electric strength and long life cycle.

This Radio Capacitor is a device that will absorb excessive voltage spikes in electrical systems. The typical location or use for a capacitor is inside a distributor tied into a point ignition system. The radio capacitor may also be called a condenser used in electrical devices which may be susceptible to voltage spikes.

Product Features:

• Application matched component to ensure the system can be returned to like new condition.
• Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.

Product Features:

• SAEJ2031 Class E cable resist heat (428 Deg. F), cold (-104 Deg. F), electrical interference, abrasion and oil.
• Stainless steel magnetic winding delivers maximum voltage to the spark plug for more powerful, and longer spark resulting in optimum engine performance while reducing the chance for misfire, and eliminating radio static.
• 100% Pure silicone external insulation resists oil penetration, for lifetime protection against wire set failure.
• EPDM inner insulation stops power-robbing voltage leaks.
• With Magnetic-impregnated Kevlar internal conductors – durable and break resistant
• Engineered to meet OEM tolerances using variable pitch wire winding, creating better resistance to electric magnetic interference (E.M.I resistance).
• Excellent interference suppression and consistent performance
• Easy lock terminals for more convenient installation.
• Thick silicon outer jacket for excellent heat resistance. Insulating EPDM based compound inner jacket helps minimize voltage drop and enhance durability.
• Broad coverage available for most vehicles on the road today
• Include grease pack to ensure easy installation and removal

The Ignition Coil Ground Strap is designed to ground the ignition coil laminations and prevent lost power from the ignition coil.

Product Features:

• Application matched component to ensure the system can be returned to like new condition.
• Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
• Attaching hardware provided (where applicable)

The MSD 8.5mm super conductor wire is the performance wire. Engineered from the inside out, the 8.5 offers everything you have ever wanted in a wire; incredibly low resistance without electronic interference. In a single 12 inch length of super conductor wire there is only 40 – 50 ohms of resistance. That is the lowest resistance of any helically wound wire. To accomplish this, we use a copper alloy conductor due to it’s great voltage carrying capabilities. The low resistance results in less loss in spark energy so more reaches the spark plug. The conductor is wound extremely tight around a special center core. So tight in fact, that there is over 40 feet of conductor wrapped into a single foot of plug wire. This winding procedure, combined with a ferro-magnetic impregnated center core, produces an extremely effective electro magnetic interference (EMI) or choke. This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. The outer sleeve that surrounds the conductor assembly is just as impressive. A proprietary blend of silicone and synthetic material produce a sleeve that is highly resistant to high heat as well as abrasion and tears. Available in universal kits and bulk lengths.

Product Features:

• Custom Fit For Make And Model Listed
• Wires Are Pre-Cut To Exact Specifications
• Bolt-on Performance

The distributor is just one piece of this type of ignition system which is typically driven by the engine’s camshaft. The distributor is the device that delivers the ignition spark to the spark plugs at a precise time, and spark timing is critical. Any wear or component out of place in this type of system will result in failure. Within the distributor and mounted to it are many individual pieces which allow the distributor and system to be maintained and repaired to keep it in top working order.

Product Features:

• Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
• Where applicable, robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
• Magnet size and strength optimized for precise signal output.
• Precision-wound coated copper windings increase signal output and increase longevity.
• Tailored magnetic circuit programming enhances timing accuracy between the reluctor wheel and circuit output.
• 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
• 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.

Carquest Premium Vehicle Solutions provides high-quality solutions for a wide range of applications. The Ignition Switch allows for reliable control of the vehicle’s electrical systems and engine start-up, enhancing convenience and ensuring consistent performance during operation. Engineered for maximum performance and durability, our products are built to excel in even the most demanding conditions, ensuring reliable operation and long-lasting value.

Product Features:

• Durable Construction: Designed with high-quality materials to withstand harsh environmental conditions, ensuring long-lasting performance in extreme temperatures, vibrations, and moisture exposure.
• Precision Engineering: Accurate sensing and switching capabilities provide reliable performance, reducing the risk of malfunctions and improving vehicle safety and efficiency.
• Easy Installation & Maintenance: Designed for quick installation and minimal upkeep, reducing downtime and repair costs for both manufacturers and consumers.
• Fit/Form/Function: Each vehicle electronic component is engineered to meet or surpass OEM standards, ensuring precise fit, optimal functionality, and reliable performance.

This is the replacement canister for MSD distributors equipped with vacuum advance (except the PN 8365 and PN 8362 HEI distributors.)

Product Features:

• Replacement Canister
• Vacuum Advance Mechanism
• For Replacement On PN[8460/8461]
• Size Replacement Canister For Distributor PN[8360/8361]

The MSD 8.5mm super conductor wire is the performance wire. Engineered from the inside out, the 8.5 offers everything you have ever wanted in a wire; incredibly low resistance without electronic interference. In a single 12 inch length of super conductor wire there is only 40 – 50 ohms of resistance. That is the lowest resistance of any helically wound wire. To accomplish this, we use a copper alloy conductor due to it’s great voltage carrying capabilities. The low resistance results in less loss in spark energy so more reaches the spark plug. The conductor is wound extremely tight around a special center core. So tight in fact, that there is over 40 feet of conductor wrapped into a single foot of plug wire. This winding procedure, combined with a ferro-magnetic impregnated center core, produces an extremely effective electro magnetic interference (EMI) or choke. This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. The outer sleeve that surrounds the conductor assembly is just as impressive. A proprietary blend of silicone and synthetic material produce a sleeve that is highly resistant to high heat as well as abrasion and tears. Available in universal kits and bulk lengths.

Product Features:

• Less than 50 ohms per foot for superior spark
• Ferro-magnetic impregnated core creates an effective EMI choke
• 40 ft. Of Conductor Wound Into A Single Foot Of Wire
• For high EMI suppression
• Conductor core features Dupont Kevlar material
• Proprietary compound sleeves for resistance to high heat/abrasion

Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.

Product Features:

• Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
• WVE electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
• Product constructed to meet all design and operating characteristics as intended by the manufacturer.
• OE specified wire gauge to ensure a reliable electrical connection
• Designed to meet or exceed OE specifications in form, fit and function

Carquest Premium ignition coils meet or exceed original equipment (OE) specifications and are developed by top OE/OES manufacturers to ensure superior performance. All of our Carquest Premium ignition coils are developed by IATF 16949 certified manufacturers for consistent durability and long-lasting performance. These ignition coils use high-quality components and will utilize optimized designs on applications where the OE ignition coil had frequent failures. We require stringent testing standards to ensure proper fit and performance for each application and stand behind our Carquest Premium ignition coils with an industry-leading warranty. Carquest Premium ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:

• Built by IATF 16949 certified manufacturers for consistent durability
• Coil drivers match OE for current limit, electrostatic discharge (ESD) protection and multi-spark
• Segmented secondary bobbins to distribute high voltage and prevent shorting
• Extensive design validation testing to ensure long-lasting reliability
• 100% end-of-line tested to ensure proper performance
• Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

Sealed Power« parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Product Features:

• Unsurpassed quality that you can trust
• Uses leading edge materials
• State-of-the-art manufacturing
• Exacting tolerances
• Meets or exceeds OEM specifications

This high performance HEI module provides your plugs with more spark over the stock module. The solid state electronics provide high coil out put and superior reliability. The Dwell control circuit ensures, long consistent coil charging. The current control circuit protects against coil over heating. This module fits most GM HEI for V8 engines with the 4 pin module 1974 thru 1985

Product Features:

• Fits Most Stock And Modified Distributors
• Solid State Electronics
• Dwell Control Circuit

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 magnet crank trigger system does exactly that by using magnets embedded in an aluminum wheel. The MSD flying magnet crank trigger uses four magnets secured in the aluminum trigger wheel that pass by a stationary non-magnetic pick-up to trigger the ignition. This flying magnet design produces accurate trigger signals and the non-magnetic pick-up cannot be false triggered. Each flying magnet crank trigger includes a two-piece mounting bracket for the non-magnetic pick-up that in most cases will work on either the passenger side or driver’s side of the engine (the SB Chrysler and SB Ford brackets mount on only one side). The adjustable bracket provides a wide range of timing adjustment and spacers are included. These systems will trigger MSD 6, 7, 8 and 10 series ignitions and all MSD timing accessories.

Product Features:

• 6.25 in. Diameter
• Absolutely the most accurate way to trigger the ignition.
• The non-magnetic pickup cannot be false triggered.
• Powerful magnets are embedded in a billet aluminum trigger wheel.

Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:

• Fel-Pro Oil Pan SnapUps 8mm bolts
• Designed to hold up the pan and gasket, for one person installation
• Engine$aver Hardware
• Unsurpassed quality you can trust
• Sold in sets of four and are reusable

This spark plug non fouler is designed for easy installation on specified vehicles to protect spark plugs from fouling and damage. It is engineered for durability and reliable performance.

Product Features:

• Direct replacement – this spark plug non fouler is designed for easy installation to protect spark plugs from fouling and damage on specified vehicles
• Ideal solution – this non-fouler preserves spark plug life and is a reliable replacement for an original non-fouler that has failed due to corrosion
• Durable construction – made from quality components to ensure reliable performance and a long service life
• Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

ACDelco Professional Distributor Cap Cover is a high quality aftermarket replacement component for one or more of the following vehicle systems: cooling, hvac, ignition, starting and charging, body-electrical and lighting, wiper and washer, and/or engine fuel management. This premium aftermarket cover is manufactured to meet or exceed your expectations for fit, form, and function.

Product Features:

• Professional, premium aftermarket replacement
• Provides the performance and dependability you expect from ACDelco
• Manufactured to meet expectations for fit, form, and function

Engineered from the inside out, the 8.5 offers everything you have ever wanted in a wire; incredibly low resistance without electronic interference! In a single 12 inch length of Super Conductor Wire there is only 40 – 50 ohms of resistance! That is the lowest resistance of any helically wound wire. To accomplish this, we use a copper alloy conductor due to it’s great voltage carrying capabilities. The low resistance results in less loss in spark energy so more reaches the spark plug. The conductor is wound extremely tight around a special center core. So tight in fact, that there is over 40 feet of conductor wrapped into a single foot of plug wire. This winding procedure, combined with a ferro-magnetic impregnated center core, produces an extremely effective Electro Magnetic Interference (EMI) “choke”. This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. The outer sleeve that surrounds the conductor assembly is just as impressive. A proprietary blend of silicone and synthetic material produce a sleeve that is highly resistant to high heat as well as abrasion and tears. The MSD’s 8.5mm spark plug terminals feature Dual Crimp terminals. As the name implies, the terminals feature two crimps; one for the sleeve of the wire and another separate crimp to grasp the conductor. The MSD’s 8.5mm spark plug terminals feature Dual Crimp terminals. As the name implies, the terminals feature two crimps; one for the sleeve of the wire and another separate crimp to grasp the conductor.

Product Features:

• Custom fit for make and model listed.
• Bolt-on performance
• Wires are precut to exact specifications
• Conductor core features DuPont Kevlar material for increased tensile strength
• Durable outer sleeve is a proprietary compound for resistance to high heat or abrasion
• Stainless steel terminals feature dual crimp tabs to grip wire conductor and outer jacket separately

Upgrade your vehicle with ZEVO® LED miniature bulbs for added style, performance, and the many benefits of LEDs. Instantly enhance the interior and exterior lighting applications of your vehicle with a modern bright white light for head-turning style and increased visibility by other motorists. Easy-to-install with a robust design and high-quality components, ZEVO replacement bulbs are backed by a limited warranty to provide exceptional performance through the life of the vehicle. Also available in an array of colors to update your car or truck.

Product Features:

• HIGH EFFICIENY: Delivers greater clarity with less power consumption and longer bulb life when compared to standard incandescent bulbs
• RELIABLE: Thermal management to maximize life, matched with robust design that withstands temperature and shock for optimal performance
• NON-POLARITY DESIGN: Plug & play easy installation; SYLVANIA ZEVO LED bulbs light on two sides and can be installed either direction
• INSTANT ON: Provide full brightness instantly, giving drivers around you more time to react, compared to the slower light-up with Incandescent bulbs
• BRIGHT WHITE LIGHT: Ideal for use in Daytime running lights (DRL), back up/reverse, map, dome, trunk, cargo and license plate light bulb replacement
• HYPERFLASH: For some vehicles, installing a load equalizer may be required to eliminate hyper flash or dashboard error messages
• EASY DIY INSTALLATION: A direct replacement for the factory bulbs in your vehicle, no modification required
• SMART MAINTENANCE: Always replace bulbs in pairs to ensure equal brightness and color.
• SAFETY: High-quality SYLVANIA bulbs are designed to perform to all relevant safety standards set for the lighting application.
• TRUSTED BRAND: SYLVANIA is a trusted OEM automotive lighting manufacturer, with over 100 years of superior optical engineering experience

For mounting on non-stock applications, for remote location. Choice of 4 core types. Female and male distributor towers. Terminal crimper and anvil tools. Includes silicone lube, boots and terminals. 20 piece kit.

Product Features:

• 300+Race- 8.8mm Black
• For Race Engine Configurations
• Stainless Steel Spark Plug Terminals
• Suppression of EMI/RFI
• 600 Degree Double Silicone Construction
• Spiral Wound Copper/Nickel Alloy
• Fully Reactive Ferrite Material
• 150 Ohms Resistance

This gear test fixture features variable rpm and oil pressure control allowing MSD engineers the ability to maintain the exact conditions that they want for gear tests. Severe loads can be placed on the gear and the fixture can spin up to 10,000 rpm. Features increased outer hardened layer thickness (RC 55-60). Micro polished surface for smooth contact. Proprietary formulated ductile iron. Melonite QPQ coated reduces friction and initial wear. Interstitial carbide concentration improves wear resistance and running properties.

Product Features:

• Increased outer hardened layer thickness (RC 55-60)
• Micro Polished Surface For Smooth Contact
• Proprietary formulated ductile iron.
• Melonite QPQ coated reduces friction and initial wear
• Interstitial carbide improves wear resistance/running properties