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TEMPEST SPARK PLUG URHM40E

Packaged Items
SingleBox of 12

Overview

MASSIVE ELECTRODE SPARK PLUG

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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Reviews

Eva G Verified Purchase

TEMPEST SPARK PLUG URHM40E

December 2, 2022

Arrived on time and fixed the problem!!!!!!

James D Verified Purchase

TEMPEST PLUG URHM40E 12PK

November 15, 2022

Works as advertised

William O Verified Purchase

TEMPEST SPARK PLUG URHM40E

September 3, 2022

As expected

Rodney A Verified Purchase

TEMPEST PLUG URHM40E 12PK

April 3, 2022

As good as the original Champion plugs I have used for decades but much cheaper.

Safari E Verified Purchase

TEMPEST PLUG URHM40E 12PK

March 29, 2022

Norm P Verified Purchase

TEMPEST PLUG URHM40E 12PK

January 28, 2022

Plugs arrived well packaged and in time as expected

Murray J
April 5, 2021

Have had zero problems.

Glen B
July 30, 2020

You sent me two 38 plugs and four40 plugs instead of six 40 plugs like I ordered!

Jesse S
February 4, 2020

Put a new set of 8 in c177b 0-360 starts great and runs great ! Thanks

Scott
October 7, 2019

Q&A

Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Are the Tempest spark plugs FAA approved with documents?

Yes, all Tempest plugs are all FAA PMA approved. There is a slip inside the spark plug sleeve that says they are FAA PMA approved. Each plug is also stamped with FAA PMA.

Q: Would the RHM38E plugs help the engine run cooler than the RHM40E plugs?

It is a cooler running plug.

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