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Walker Products 921-2151 Ignition Coil

Walker Products 921-2151 Ignition Coil

$38.93 USD
$38.93 USD $38.93 USD
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From the brand

  2. As an Industry Leading Supplier of fuel delivery components, emission control products, engine sensors, ignition wire sets, ignition coils, and coil-on-plug boots, Walker Products is uniquely positioned to provide solutions to OEM and Aftermarket distribution channels. From late models to the very first vehicles using O2 sensors, Walker is recognized for exact OEM Fit, Form and Function. We are committed to exceptional quality and performance.

  3. Top Sellers

  4. Oxygen Sensors and Tools

  5. Spark Plug Wire Sets

  6. MAP Sensors

  7. Engine Coolant Temp Sensors

  8. Carburetor Kits

  9. Idle Control Components

  10. Camshaft/Crankshaft Sensors

  11. How did we get our start?

    Walker Products began supplying the fuel system needs of the automotive industry in 1946. Today, Walker is one of the largest privately owned manufacturers of fuel system components and engine sensors.

    What makes our products unique?

    We take quality seriously, which is why our products are engineered, manufactured, and tested to meet and exceed OE Fit, Form, and Function.

    What problem are we solving?

    Walker Products provides OEM and Aftermarket channels with the very best products. We supply over 20,000 products that help engines run better and keep our air cleaner.

From the manufacturer

walker logo

Why Ignition Coils from Walker Products?

thunderspark ignition coils

Walker Products ThunderSpark Ignition Coils for Better Fuel Combustion and Optimized Fuel Efficiency

Walker Products ThunderSpark Ignition Coils are engineered to deliver precise high-voltage pulses to spark plugs at the optimal moment for combustion, triggered by signals from the distributor or engine control computer. Designed for reliable performance, these coils ensure smooth engine operation and enhanced fuel efficiency. Their durable construction resists wear from harsh environments, minimizing the need for frequent replacements. Exceeding OE standards, they provide dependable spark output and consistent ignition. By promoting more complete fuel combustion, they help reduce emissions while maximizing overall engine efficiency.

Walker Products ThunderSpark Ignition Coil Sets are engineered for maximum performance and durability, featuring premium German copper windings for both primary and secondary coils. Enhanced thermoplastic connectors and housings boost longevity, while high-grade epoxy insulation minimizes voltage breakdown and leakage. Silicone rubber boots provide superior heat resistance and insulation, ensuring reliable ignition in extreme conditions. Available in sets of 3, 4, 6, or 8 coils, these kits restore consistent spark energy across all cylinders, improving engine performance and fuel efficiency. Replacing all coils at once reduces labor time, prevents misfires, and helps eliminate costly comebacks.

ignition coils

Optimal Ignition Performance

Our premium Ignition Coils deliver consistent and efficient ignition, ensuring smooth engine operation and improved fuel efficiency.

Frequently Asked Questions

What do ignition coils do? The Ignition Coil takes the battery’s 12-volt output and amplifies it to over 30,000 volts. This higher voltage is then routed to the spark plug via coil boot or wire, which ignites the air/fuel mixture inside engine’s cylinder.
Why does a ignition coil fail? The primary cause for failure is voltage overload caused by worn spark plugs or damaged cables and wires. The hot and cold temperatures plus engine vibrations can cause the coil’s windings and insulation to break.
How to diagnose a faulty coil? The vehicle could experience misfiring, backfiring, hard starting, poor performance, or poor fuel economy - these are all potential signs of a faulty ignition coil. The vehicle’s check engine light could be triggered by a faulty ignition coil
Why choose Walker Products? Walker Products Ignition Coils are 100% engineered and tested. Walker Products works continuously to stay current on all OE design changes, TSB’s, and improvements to the OE design to make the best part for your vehicle. Walker Product’s Ignition Coil Sets provides the ability to fix the vehicle the first time and not make multiple trips to the store getting what you need
Walker Products 921-2005 Ignition Coil
Walker Products Ignition Coil 920-1020
Walker Products 921-2057 Ignition Coil
Walker Products 921-2107 Ignition Coil
Walker Products 921-2126 Ignition Coil
Walker Products Ignition Coil 920-1003
Customer Reviews
4.6 out of 5 stars 3
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4.3 out of 5 stars 2
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5.0 out of 5 stars 1
3.9 out of 5 stars 22
Price $12.08 $21.11 $22.20 $36.78 $31.30 $23.97
SKU 921-2005 920-1020 921-2057 921-2107 921-2126 920-1003
Voltage 12.0 12.0 12.0 12.0 12.0 12.0
Ignition Type Distributorless Electronic Distributorless Distributorless Distributorless Electronic
Oil Filled No No No No No No
Requires External Resistor No No No No No No
Terminal Type Spade Spade Spade Spade Spade Spade
Terminal Quantity 2 4 4 3 4 5
Connector Gender Female Male Female Female Female Male
Terminal Gender Male Male Male Male Male Male
Mounting Bracket Included Yes Yes Yes Yes Yes Yes

Product Description

Walker Products Ignition coils are designed for the professional technician and meet or exceed OEM manufacturers specifications in fit form and function. The primary winding of the ignition coil is wound with a small number of turns and has a small resistance. Applying the battery to this coil causes a sizable DC current to flow. The secondary coil has a much larger number of turns and therefore acts as a step-up transformer. But instead of operating on AC voltages, this coil is designed to produce a large voltage spike when the current in the primary coil is interrupted. Modern coil designs produce voltage pulses up in the neighborhood of 40,000 volts from the interruption of the 12-volt power supplied by the battery. Some modern engines have multiple ignition coils mounted directly on the sparkplugs. Instead of single voltage pulses, they may under some engine conditions produce three voltage pulses. The ignition coil is a compact, electrical transformer that boosts the battery's 12 volts to as high as 40,000 volts. Walker Products began supplying the fuel system and engine management needs of the automotive industry since 1946. As an ISO 9001:2015/TS16949 certified company, we are committed to supplying the highest quality products. Fit: Vehicle Fitment Infiniti EX35 2012-2008, Infiniti FX35 2012-2009, Infiniti G25 2012-2011, Infiniti G35 2008, Infiniti JX35 2013, Infiniti M35 2010-2009, Infiniti M35h 2013-2012, Infiniti Q50 2016-2014, Infiniti Q70 2016-2014, Infiniti QX60 2015-2014, Nissan 350Z 2009-2007, Nissan Altima 2016-2007, Nissan Maxima 2014-2009, Nissan Maxima 2016, Nissan Murano 2016-2009, Nissan Pathfinder 2016-2013, Nissan Quest 2016-2011

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