FREE SHIPPING ON ORDERS OVER $699 (SOME EXCLUSIONS APPLY) | 877-795-2278

Tempest Aviation Spark Plug UREM40E

Select Package Quantity:
Single Plug Box of 12 Plugs
Quantity
Add to Wishlist

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

  • Frequently Purchased With
  • Customers Also Viewed

Reviews

Great product and service from Spruce! . Made a huge ruin performance. Plane runs smoothly. I replaced REM38E with theses Tempest UTEM40E. CHT doesn’t run hotter like I was concern. Much cheaper the the Champion and does exactly same thing. You pay Champion extra for the bran name.

Romeo T Verified Purchase

TEMPEST SPARK PLUG UREM40E

September 20, 2023

Economical and good,replacement for Champion REM40E

Abbas N Verified Purchase

TEMPEST SPARK PLUG UREM40E

September 15, 2023

Norm P Verified Purchase

TEMPEST PLUG UREM40E 12 PK

September 2, 2023

Solid performer

Flying M Verified Purchase

TEMPEST SPARK PLUG UREM40E

August 9, 2023

Arrived quickly and work as expected.

Dana P Verified Purchase

TEMPEST SPARK PLUG UREM40E

August 4, 2023

Plugs worked like a charm and very prompt delivery. You guys are awesome!

William A Verified Purchase

TEMPEST SPARK PLUG UREM40E

August 2, 2023

White B Verified Purchase

TEMPEST SPARK PLUG UREM40E

June 21, 2023

Great product !

James L Verified Purchase

TEMPEST SPARK PLUG UREM40E

June 7, 2023

Made the right choice

Glenn F Verified Purchase

TEMPEST SPARK PLUG UREM40E

June 7, 2023

5 star

Robert L Verified Purchase

TEMPEST SPARK PLUG UREM40E

May 10, 2023

Q&A

Please note, Aircraft Spruce Canada'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 Canada 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: Does Tempest provide the copper gasket on the UREM40E? Or purchased separately?

Each Tempest spark plug will come with one copper gasket. Any additional gaskets must be purchased separately.

Q: Is the Tempest UREM40E the equivalent of the Champion REM40E? I hope so as I have just ordered 8 UREM40E's?

Yes, the Tempest UREM40E is a direct replacement for the Champion REM40E. Both with work in the same applications.

Q: What size copper gasket is required with the Tempest UREM40E plugs, 14 or 18mm?

18mm

Q: The Champion chart calls for a REM40E in a Continental W-670 while Tempest calls for a UREM38E. Why does Tempest call for a colder plug in the same application?

The heat ranges actually overlap each other. You can use either one.

Q: What size is the UREM40E? 5/8 or 3/4 ?

5/8 inch.

Q: Is a fine-wire plug available for the UREM-40E?

UREM38S is the fine wire version of UREM40E.

Q: Does the Tempest UREM40E gap come pre-set?

Yes, these will come pre-gapped within a certain range. The end user will need to verify with their application on what gap they are actually needing. The massive plugs are gapped .016" to .021" and the fine wire are .017 to .021".

Q: Are Tempest UREM40E spark plugs identical in dimensions as the Champion REM40E? The cowling has bump outs for the spark plugs so the dimensions are critical for proper clearance.

Yes, the physical dimensions are the same for both brand plugs.

Q: Are these Tempest UREM40E plugs considered "Long reach" spark plugs?

These are not. UREM37BY would be considered long reach.

Q: Are all the Tempest spark plugs direct replacements for the Champion plugs minus the leading U on the part number. ( is a UREM38E, a direcct replacemet for the Champion #REM38E?)

Yes, they are equivalent applications and interchangeable.

View in Catalog

View Image View in Catalog