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$6.99

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

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$4.99

Motorcraft Spark Plugs are original equipment on Ford Motor Company vehicles engineered to meet strict Ford engineering standards to provide original equipment performance and reliability. Delivering performance, reliability and confidence, Motorcraft spa

Product Features:

Motorcraft spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption and optimize emissions.
Backed by Motorcraft’s Service Parts Warranty
Exact fit for Ford, Lincoln and Mercury vehicles
Resistant to oxidation and arc erosion.
Multi-rib insulator protects against misfire.
Service intervals of up to 100,000 miles.
Motorcraft Spark Plugs are designed with high quality materials to provide reliable performance for almost any application.
Motorcraft Spark Plugs are what was in the vehicle when it was manufactured
Motorcraft ignition components help prevent false check engine lights.

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$4.49

Champion Platinum Power spark plugs deliver powerful performance. Made from exclusive Heat-Active alloy, a fine-wire center electrode and V-trimmed ground electrode provides sharp spark focus.

Product Features:

Platinum Power- Premium Spark Plug. Powerful Performance.
Platinum center electrode for long life
Fine-wire center electrode for greater ignitability
V-trimmed ground electrode promotes sharper spark focus
Heat-Active alloy allows electrodes to reach optimal temperature
Platinum tipped center wire resists wear and helps to maintain proper gap spec over life of the plug

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$5.29

The Motorcraft Spark Plug is a high-quality replacement spark plug designed to provide reliable performance and long-lasting durability for your vehicle. It features a nickel alloy electrode that provides superior wear resistance and a platinum tip that ensures consistent performance over the life of the plug. The Motorcraft Spark Plug also has a ribbed insulator design that helps prevent misfires and a copper core that provides efficient heat transfer. It is designed to meet or exceed OEM specifications and is compatible with a wide range of vehicles. Whether you’re looking to replace worn-out spark plugs or upgrade to a higher-quality option, the Motorcraft Spark Plug is an excellent choice that will help keep your engine running smoothly and efficiently.

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$2.99

Motorcraft spark plugs are designed, engineered and recommended by Ford Motor Company.

Product Features:

Same part installed when the engine rolled off the assembly line
30,000-mile service interval
Copper core electrode and nickel chromium alloy side electrode for excellent heat dissipation and durability.
Resistor reduces radio frequency interference (RFI) and electrode erosion
Copper-glass seal bonds insulator and terminal post center electrode together to ensure full required voltage at spark gap and a gas-tight seal

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$4.09

Motorcraft Original Equipment Copper Core spark plugs are designed, engineered and recommended by Ford Motor Company.

Product Features:

Same part installed when the engine rolled off the assembly line
Designed to deliver quick starts, enhanced fuel economy and smooth acceleration

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$4.79

Motorcraft Spark Plugs are original equipment on Ford Motor Company vehicles engineered to meet strict Ford engineering standards to provide original equipment performance and reliability. Delivering performance, reliability and confidence, Motorcraft spa

Product Features:

Motorcraft spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption and optimize emissions.
Backed by Motorcraft’s Service Parts Warranty
Exact fit for Ford, Lincoln and Mercury vehicles
Resistant to oxidation and arc erosion.
Multi-rib insulator protects against misfire.
Service intervals of up to 100,000 miles.
Motorcraft Spark Plugs are designed with high quality materials to provide reliable performance for almost any application.
Motorcraft Spark Plugs are what was in the vehicle when it was manufactured
Motorcraft ignition components help prevent false check engine lights.

from

$4.79

Motorcraft Spark Plugs are original equipment on Ford Motor Company vehicles engineered to meet strict Ford engineering standards to provide original equipment performance and reliability. Delivering performance, reliability and confidence, Motorcraft spa

Product Features:

Motorcraft spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption and optimize emissions.
Backed by Motorcraft’s Service Parts Warranty
Exact fit for Ford, Lincoln and Mercury vehicles
Resistant to oxidation and arc erosion.
Multi-rib insulator protects against misfire.
Service intervals of up to 100,000 miles.
Motorcraft Spark Plugs are designed with high quality materials to provide reliable performance for almost any application.
Motorcraft Spark Plugs are what was in the vehicle when it was manufactured
Motorcraft ignition components help prevent false check engine lights.

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$12.52

DENSO Iridium Power spark plugs represent a performance breakthrough. The laser-welded center electrode is only 0.4mm in diameter – the slimmest iridium electrode in the industry. The taper-cut side electrode complements the design, delivering reliable spark energy under the most gruelling pressures and temperatures. DENSO engineers used the power of this miraculous metal to produce an iridium center electrode that is only 0.4mm in diameter. With its superior thermal qualities, this whisker-fine electrode is capable of taking the most extreme heat and punishment. This breakthrough was matched to one of DENSO’s most famous innovations, the patented U-Groove ground electrode. The combination of these two features resulted in the Iridium Power® plug, one of the most advanced and innovative spark plugs on the market.

Product Features:

Tapered cut, U-Groove ground electrode
0.4mm iridium center electrode
360-degree laser welding assembly process
Required ignition voltage reduced
Unsurpassed center electrode durability
Available for many performance and power sports applications, including Corvette, Viper, and Harley-Davidson The Iridium Power plug delivers greater spark energy while demanding significantly less secondary required voltage from the ignition system.

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$4.99

The ground electrode is cut-back from the center electrode to provide a gap, and its concave face ensures a constant gap to the center electrode. This design opens the spark face for better ignitability of the flame kernel and retains less heat, transferring it to the shell faster to reduce the risk of pre-ignition. Dyno testing has shown proven power gains, making it ideal for all aftermarket cylinder heads used in various racing venues, including oval and road racing. The cut-back ground electrode is an evolution from the practice of grinding back the side electrode, and it features a tapered seat type for optimal performance.

Product Features:

Opens spark face for better ignitability of flame kernel
Retains less heat, transfers heat to shell faster – reduces risk of pre-ignition
Dyno testing has shown proven power gains
Cut-back ground electrode evolved from practice of grinding back the side electrode
Optimal Performance: Features a tapered seat type for optimal performance in various racing venues, including oval and road racing.
Durable Design: Specifically designed to handle intense conditions, making it suitable for all aftermarket cylinder heads used in racing.

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$4.93

The NGK V Power spark plug offers a 90 degree V-Power center copper or platinum electrode that provides performance, improved ignitability, increased fuel economy and lower emissions over standard Spark Plugs. The Trivalent Metal Plating has superior anti-corrosion and anti-seizing properties. NGK’s V-Power Plugs Feature a Unique V-Cut in the Center Electrode that Directs the Spark to the Edge of the Electrode, Helping the Spark Develop More Rapidly, Increasing Ignitability and Reducing Quenching.

Product Features:

Lowers ignition system voltage requirements
Greater ignitability and performance over conventional spark plugs
Corrugated Ribs Prevent Flashover
Trivalent Metal Plating has superior anti-corrosion and anti-seizing properties
Pure Alumina Silicate Ceramic Insulator, Provides Superior Strength and Better Heat Transfer
Increased fuel economy and lower emissions
Highly durable against electrical and chemical wear
Triple Seals Prevent Leakage Economical performance and improved ignitability over standard NGK Spark Plugs original equipment manufacturer and racer approved.

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$6.79

ACDelco Gold (Professional) RAPIDFIRE Spark Plugs are a high quality alternative to Original Equipment (OE) parts. These RAPIDFIRE Single Platinum Performance Spark Plugs are designed for everyday use and are a high quality replacement for many vehicles on the road today. These premium aftermarket spark plugs have high-quality suppressors that help prevent misfiring, an improved plug to boot seal, and a pure copper core for greater durability. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.

Product Features:

Solid state suppressor, with two-piece glass and brass seal, can help reduce radio frequency interference, regulates spark energy for long electrode life, and helps protect against high combustion pressures
Pure copper core provides great heat transfer and helps maximize plug durability
Platinum on center electrode enables superior spark characteristics and can reduce voltage requirements of the ignition system
Ribless insulator helps optimize plug to boot seal
Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
Premium aftermarket replacement part
Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models
High-Quality Suppressors: ACDelco Gold RAPIDFIRE Spark Plugs feature high-quality suppressors that help prevent misfiring, ensuring reliable performance for everyday use.

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$3.49

With over 100 years of engineering expertise and over 11 billion plugs sold, Autolite continues to innovate with its copper spark plugs. Designed and engineered in the USA, these plugs feature a copper-glass seal that bonds the insulator, terminal post, and center electrode together, ensuring full required voltage at the spark gap with a 100% leak-proof, gas-tight seal. The multi-rib insulator reduces the risk of flash-over, while the one-piece terminal post adds strength and durability. Additionally, the built-in resistor minimizes radio frequency interference (RFI) and electrode erosion, making these spark plugs a reliable choice for enhancing your vehicle’s performance.

Product Features:

Copper-glass seal bonds insulator, terminal post center electrode together; assures full required voltage at spark gap; gas-tight seal (100% leak proof)
Multi-rib insulator reduces danger of “flash-over”
One-piece terminal post adds strength
Resistor reduces radio frequency interference (RFI) and electrode erosion
Quick Starts: The Autolite Copper Spark Plug ensures quick engine starts, enhancing your vehicle’s reliability and performance.
Good Fuel Economy: Engineered to optimize fuel efficiency, these spark plugs help you save on fuel costs while maintaining excellent performance.
Smooth Acceleration: Experience smoother acceleration with Autolite’s advanced copper spark plug design, providing a more responsive driving experience.

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$11.99

NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode’s durability is six times harder than platinum. Iridium alloy’s extremely high melting point is perfect for today’s engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.

Product Features:

SINGLE IRIDIUM TIP: Fine wire 0.6 millimeter iridium tip center electrode ensures high durability and a consistently stable spark
IRIDIUM ALLOY CENTER ELECTRODE: Iridium’s density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
TAPERED CUT GROUND ELECTRODE: Reduced quenching design produces outstanding ignitability, improved acceleration, fuel efficiency and durability
SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
Outstanding Acceleration and High Fuel Efficiency: NGK Iridium IX spark plugs are engineered to deliver exceptional acceleration and improved fuel efficiency, making them ideal for performance enthusiasts.
Extreme Ignitability and Anti-Fouling: These spark plugs offer extreme ignitability and exceptional resistance to fouling, ensuring reliable performance in various driving conditions.

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$129.99

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

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$65.99

These ACCEL wire sets are a true performance upgrade replacement for OE types. Efficient delivery of spark energy for a good price. Silicone boots with black wire contain zinc-plated steel terminals. Noise suppression core. Set contains 8 plug wires with coil lead.

Product Features:

7mm And 8mm High Gloss Silicone Jacket
450° F Rated Silicone Jacket
Stainless Steel Plug Terminals
RFI Suppression For Street Driven Applications
Custom-fit Universal And Import Coverage
High-strength Fiberglass Braid Construction
Pre And Post HEI Vehicles

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$63.99

These ACCEL wire sets are a true performance upgrade replacement for OE types. Efficient delivery of spark energy for a good price. Silicone boots with black wire contain zinc-plated steel terminals. Noise suppression core. Set contains 8 plug wires with coil lead.

Product Features:

7mm And 8mm High Gloss Silicone Jacket
450° F Rated Silicone Jacket
Stainless Steel Plug Terminals
RFI Suppression For Street Driven Applications
Custom-fit Universal And Import Coverage
High-strength Fiberglass Braid Construction

1991 Ford E-350 Econoline Spark Plugs

More 1991 Ford E-350 Econoline Spark Plugs

Essential 1991 Ford E-350 Econoline Spark Plugs

Dorman – Help – Spark Plug Non-Foulers – 14mm Tapered Seat (Part No.42006)

Motorcraft – Spark Plug (BSF44P) (Part No.SP-452)

Champion – Platinum Power Spark Plug: Powerful Perfromance, OE Replacement, RS10PYC4 (Part No.3401)

Motorcraft – Spark Plug (Part No.SP-425-X)

Motorcraft – Spark Plug (BSF82C) (Part No.SP-431)

Motorcraft – Original Equipment Copper Core Spark Plug (Part No.F1000194985MTR)

Motorcraft – Spark Plug (BSF44CF6) (Part No.SP-435-A)

Motorcraft – Spark Plug (BSF42C) (Part No.SP-420-A)

DENSO – Iridium Power Spark Plug (Part No.F1000131221ND)

Autolite – Racing Resistor Spark Plug: Enables Performance, Handles Intense Conditions (Part No.AR103)

NGK – V Power Spark Plug (Part No.F100037151NGK)

ACDelco – RAPIDFIRE Premium Platinum Tip Copper Core Spark Plug: Reduces Misfires & Enhances Durability (Part No.2)

Autolite – Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration (Part No.25)

NGK – Iridium IX Spark Plug: Single Iridium Fine Wire, UR5IX (Part No.7177)

MSD Ignition – Wire Set; Super Conductor; Multi-Angle Plug; HEI Cap (Part No.31189)

Accel – Universal Fit Super Stock 8mm Suppression; Spark Plug Wire Set (Part No.4040R)

Accel – Universal Fit Super Stock 8mm Suppression; Spark Plug Wire Set (Part No.4040)

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1991 Ford E-350 Econoline Spark Plugs

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FAQs for 1991 Ford E-350 Econoline Spark Plugs

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