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Champion Spark Plugs - RHM40E

Packaged Items
SinglePack of 12

Overview

In the early 1900s, small planes flew with single ignition systems powered by adapted automobile engines using Champion-brand automotive spark plugs. By the 1920s, the company had developed innovative spark plugs designed specifically for the aviation industry.

Champion Aerospace designs and manufactures Champion-brand piston-engine ignition components for both OEM and aftermarket for general aviation aircraft applications. Every spark plug manufactured has built-in design advantages that assure longer life and greater reliability.

A typical spark plug number with symbol explanation

1. Resistor None--No Resistor R--Mil-Spec. Resistor-Erosion protection
2. Barrel Style None -- Unshielded E -- Shielded 5/8"-24 Thread
H -- Shielded 3/4"-20 Thread (All Weather Plug)
3. Mounting Thread -- Reach -- Hex Size B-18mm 13/16" / 2.06cm 7/8" / 2.22cm M--18mm 1/2"/1.27cm 7/8"/2.22cm
L-14mm 1/2"/1.27cm 13/16/2.06cm 18mm 1-1/8"/2.85cm 13/16/2.06cm
J -- 14mm 3/8"/0.95cm 13/16/2.06cm
4. Heat Rating Position Low number--cold High number--hot
5. Electrode Design None-Conventional single E -- Two prong massive
N -- 4 prong massive
W -- Fine wire (Iridium) B --2 prong massive, Tangent to Center
P--Fine wire (Platinum)


* Shielded barrel thread size. Check barrel size - 5/8x24 or 3/4x20 threads before ordering and select proper plug number, See page 236 for Sparkplug Application Table.

** The "Iridium S" sparkplugs replace the Platinum and "W" Iridium types. Increased bore diameter improves scavenging action. Greater clearance volume can accept more combustion deposits. Single Iridium electrode offers greater resistance to lead attack. Easy to clean Easy to gap


NOTE:
Spark plugs are shipped in factory sealed plastic cases. Opened spark plug cases make the spark plugs non-returnable. Please do not open any spark plug until you are sure you have received the correct spark plugs for your application
   
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

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Reviews

makes my engine go, boom, boom, boom....

Owen L Verified Purchase

CHAMPION SPARK PLUG RHM40E

March 4, 2024

Great product worth the extra money

David S Verified Purchase

CHAMPION SPARK PLUG RHM40E (BOX OF 12)

November 15, 2023

excellent service

Macario M
March 20, 2021

Awesome service, thanks once again

Case G
December 22, 2020

For many years Champion sold defective plugs with internal resistors that would crack or go open so I began using Tempest plugs. But now the quality of the Tempest seems to be less so I am trying the Champions again to see if they are worth the substantial extra cost.

Pat D Verified Purchase

CHAMPION SPARK PLUG RHM40E

June 1, 2023

Q&A

Please note, Pilotshop.com'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. Pilotshop.com 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: For shipping purposes, can you tell me the weight of the spark plug Champion RHM40E?

0.28 lbs