1955 Armstrong-Siddeley Sapphire Spark Plugs
Your 1955 Armstrong-Siddeley Sapphire might be the best vehicle you’ve ever owned. Or you may just be struggling to keep it highway-approved. No matter the situation, Advance Auto Parts has the Spark Plugs you desperately need.
We currently carry 5 Spark Plugs to choose from for your 1955 Armstrong-Siddeley Sapphire, and our inventory prices range from as little as $2.99 up to $7.49.
On top of low prices, Advance Auto Parts offers 4 different trusted brands of Spark Plugs for the 1955 Armstrong-Siddeley Sapphire. We only sell parts from trusted brands like E3 so that you can find quality parts you can count on.
Don’t take our word for it – check out customer ratings and reviews to buy with confidence. We have 56 reviews on our Spark Plugs for the 1955 Armstrong-Siddeley Sapphire from previous customers.
Have parts delivered straight to your home, or find the nearest Advance Auto Parts store to check out our Spark Plugs stock in-person!
Spark Plugs for Your 1955 Armstrong-Siddeley Sapphire
ACDelco – Conventional Spark Plug (Part No.R44XL)
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$3.99
ACDelco Professional Conventional Spark Plugs are designed for reliability and efficient performance, and are a high quality replacement for many vehicles on the road today. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance. They are also available for Marine applications. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function.
Product Features:
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Product Features:
- Black Onyx coating helps reduce corrosion
- Copper core provides great heat transfer and helps maximize plug durability
- Ribbed suppressor seal extends resistance and helps prevent spark ‘flash over’ and misfires
- Nickel-chrome alloy sheathing helps prevent corrosion on center electrode
- Available for use in Marine applications
- 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
Autolite – Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration (Part No.405)
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$3.49
Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, Autolite Double Platinum spark plugs feature platinum-to-platinum firing which virtually eliminates gap erosion, reduces misfires and increases durability of the plug. Consider upgrading to Autolite Iridium XP spark plugs for increased performance.
Product Features:
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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
E3 – DiamondFIRE Automotive Spark Plug: More Power, Saves Gas (Part No.E3.46)
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$7.49
The Spark Plugs are the product of years of fundamental research in the combustion field. The unique patented electrode configuration of these new The spark plugs increases the amount of combustion pressure created during each power stroke of an engine, which results in a marked increase in power output, fuel economy, and reduced emissions in all gasoline engines. E3.46 is a 14mm, 0.750 reach plug with a gasket seat. It fits a wide variety of applications from the 60s to early 90s, especially import. E3.46 is widely stocked in automotive retail stores. The automotive plugs have three legs securing the Diamond FIRE electrode to the shell. This allows for excellent heat transfer, and helps to create more turbulence in the cylinder. The patented Diamond FIRE side wire is proven to increase power, reduce fuel consumption and improve hydrocarbon emissions in long-term use.
Product Features:
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Product Features:
- E3’s Diamond Fire edge to edge ground electrode provides maximum performance with increased efficiency and a faster more complete burn.
- Smoother Acceleration & Idle – The faster flame initiated by the The spark plug results in a more complete burn of the ingested fuel charge. More pressure is created against the piston more fuel is put to work
- Energy – Power output improved up to 6% on average in the typical operating ranges. Results will vary.
- Efficiency – The “diamond shaped” side wire electrode projects the combustion spark in a way that more quickly ignites the air/fuel mixture, thereby creating a significantly faster and larger flame kernel. The result is that more fuel is put to work durin
- E3’s patented Diamond Fire Technology provides a cleaner burning combustion, which translates into fuel savings and reduced engine carbon deposits
- The Spark Plugs are pre-gapped at the factory and cannot be adjusted.
Champion – Copper Plus Spark Plug: Dependable Performance, OE Replacement, RN7YC (Part No.332)
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$2.99
Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.
Product Features:
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Product Features:
- Copper Plus – Dependable Performance.
- Copper core center electrode allows for accurate control of heat range for longer life
- Patented TinTac and ULTRASEAL coated shell for maximum corrosion resistance
- Patented SAC-9 semiconductor resistor for maximum EMI & RFI suppression
- Built to ISO and SAE standards for proven performance
Champion – Copper Plus Small Engine Spark Plug Dependable Performance, OE Replacement N6YC (Part No.315)
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$3.79
Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.
Product Features:
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Product Features:
- Resists fouling
- Superior corrosion resistance
- Dependable and proven performance
- Increased conductivity and heat control for good overall wear
FAQs for 1955 Armstrong-Siddeley Sapphire Spark Plugs
What are the most popular Spark Plugs for the 1955 Armstrong-Siddeley Sapphire?
With 4 brands you can trust, our most popular Spark Plugs for the 1955 Armstrong-Siddeley Sapphire parts are:
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$3.49
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Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration
Spark Plugs
