1991 Ford Bronco Spark Plug Boots

Motorcraft Plug Wires are Manufactured of premium-quality materials to strict Ford Engineering standards. High-Dielectric Insulation helps maintain and control voltage delivery while reducing Radio Frequency Interference. EPDM/Silicone wire jacket, spark plug & coil/ distributor insulators help protect against oil and high temperatures. Optimized wire lengths help minimize part numbers while still providing proper fit. Designed and Tested to Stringent Ford Standards.

Product Features:

• Backed by Motorcraft’s Service Parts Warranty
• Designed for long life – key life durability testing (equivalent to 10 years/150,000 miles) is conducted in addition to on-vehicle durability testing.
• Optimized wire lengths help minimize part numbers while still providing proper fit.
• Wires are optimum lengths for easy installation.
• EPDM/Silicone wire jacket, spark plug AND coil / distributor insulators help protect against oil and high temperatures.
• Motorcraft ignition components help prevent false check engine lights.

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
• 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

The street fire spark plug wires feature a low resistance conductor that’s wrapped in a sleek and durable black sleeve. The terminals are covered in black boots that protect the conductor from engine heat to ensure spark delivery.

Product Features:

• Helically wound conductor suppresses electro and radio noise
• Kevlar core combination for great strength and durability
• Heavy Duty Terminals For Secure Connection
• 8mm silicone and synthetic jacket resists heat and abrasion
• 500 Ohms/ft. Resistance For Improved Spark Delivery And Power
• Silicone Boots Protect Against High Exhaust Temps

The street fire spark plug wires feature a low resistance conductor that’s wrapped in a sleek and durable black sleeve. The terminals are covered in black boots that protect the conductor from engine heat to ensure spark delivery.

Product Features:

• Helically wound conductor suppresses electro and radio noise
• Kevlar core combination for great strength and durability
• Heavy Duty Terminals For Secure Connection
• 8mm silicone and synthetic jacket resists heat and abrasion
• 500 Ohms/ft. Resistance For Improved Spark Delivery And Power
• Silicone Boots Protect Against High Exhaust Temps

Routing spark plug wires is an art form. It takes patience and time to route your wires away from the headers, through separators and to the distributor cap. Some wire sets fit perfect, but a lot of people want to build their own so they can route them exactly how they see fit. Our Universal spark plug wire sets come with the spark plug terminal and boot installed with the other end open. Distributor cap boots and terminals are included so you can cut the wire to the desired length, then install the terminal with the supplied Mini-Stripper-Crimper. It’s a little more work, but in the end it will be worth it.

Product Features:

• Extra Long 8.5mm Wires So You Can Cut To Your Designed Length
• Distributor Cap – Boots and Terminals Included
• Incl. Mini-Stripper-Crimper

The oversized 8.8mm wire features a double silicone construction rated at over 600 F and 60kV. High gloss black silicone wire jacket not only looks great, but resists heat extremes, petrochemicals, ozone and moisture better than so-called blended materials for greater durability and longer life. High-density, high-temperature silicone insulation provides greater dielectric strength and eliminates arcing and the effects of corona better than typical OE style rubber materials. All-Kevlar stranded inner core and fiberglass braiding add greater pull strength and terminal retention. Stainless steel and brass terminals provide unsurpassed electrical conductivity and excellent corrosion resistance compared to terminals made of common or plated metals.

Product Features:

• 150 Ohms/ft Of Resistance
• 600 F Rated Silicone Jacket
• Stainless Steel Plug Terminals
• Custom-fit Universal And Import Coverage
• Pre And Post HEI Vehicles
• Spiral-Wound Copper/Nickel Alloy

For engines with late-model type (HEI spark plug top) distributor caps. Multi-angle boots and terminals installed on one end. 90 degree distributor boots and terminals included.

Product Features:

• Extra Long 8.5mm Wires So You Can Cut To Your Designed Length
• Distributor Cap – Boots and Terminals Included
• Includes Mini-Stripper-Crimper For Factory Style Crimps
• Size Includes [8] 90 Degree Boots/Terminal Ends
• 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