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Aviation Spark Plug With the most automated manufacturing processes and the most innovative spark plug in the aviation industry. Made in USA.

High Conductivity Copper Core Center Electrode copper, co-extruded inside a nickel alloy sleeve ensures outstanding heat and electrical conductivity while the nickel sleeve offers high resistance to corrosive combustion gases.

High Alumina Ceramic Insulator high mechanical strength, superior dielectric properties, proprietary protective glaze, provides high performance to conquer severe operational conditions. "Clean Collar" massive electrode "V" tip focuses heat to reduce fouling and enhance heat range control.

Proprietary Glass Center Seal 21st century 'fired in' resistor replaces the multipart screw, spring, carbon pile stack up used in competitive plugs and known to suffer from resistance value instability that can cause misfires, wasted fuel, engine roughness.

Nickel Finish environmentally preferable electrolytic nickel provides outstanding durable finish, superior corrosion protection, and extreme wear resistance.

Nickel Ground Electrodes aviation grade nickel electrode design focuses on minimizing sparking voltage requirements while maintaining specification gaps to ensure large, stable 'flame kernels' for on-time ignition and complete combustion.

Vacuum Infused Center Electrode proprietary, vacuum infusion process seals electrode/insulator gap providing stable heat range and superior center electrode cooling (heat flow to the insulator).

Hot-Lock Assembly intense pressure and heat create positive, zero-leakage, shrunk in seal between insulator and shell to contain the hot, high pressure combustion cycle gases.

Harness Wire Contact smooth, uninterrupted, oxide treated spring contact surface offers enhanced corrosion resistance, is chemically bonded to the fired-in resistor providing the ultimate harness/spark plug termination integrity and energy transfer.

Application Guide

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Looks like they have improved them over the last few years!

Charles K
March 16, 2021

Best plugs you can buy

Matthew B
February 21, 2021

Find that Tempest products are of high quality and these spark plugs perform as expected

September 17, 2020

Good service in a timely manner.

Klaus A
July 15, 2020

They create sparks, so they work as advertised.

Ned S
July 15, 2020

They worked.

James R
July 13, 2020

Great product and service

Mark A
July 13, 2020

Quality looks great , tested great and gaps were correct . Was plug and play , pun intended.

March 30, 2020

I ordered a dozen Tempest plugs on Friday by phone. Aircraft Spruce shipped them by UPS Ground the same day, and the package arrived on Wednesday, as promised. Well packaged, no damage, best price. Great service!

Doug B
March 25, 2019

Always good service and products from Spruce!

Rae W
April 7, 2017


Q: Do the URHB32E plugs come with the proper gap?

The Tempest plugs come pre-gapped from the manufacturer and have a paper insert in each tube stating the gap requirements.

Q: Do these spark plugs come with the copper gasket washer?

Yes, each Tempest Spark Plug includes one copper gasket.

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