|Plug Number||Plug Type||Part #
Box of 12
Box of 12
Aviation Spark Plugs
High Conductivity Copper
High Alumina Ceramic Insulator
I like the quality and performance of the Tempest Spark Plugs best. My last set were the Tempest Massive Electrodes that I switched to from the Champion Brand because of radio noise which went away with the Tempest Plugs. My current set for my RV9A are the Tempest Fine Wire Plugs. They too are radio quiet and give great performance.
I replaced my defective Champion plugs with these, and they work great. Although I hear that Champion has fixed their resistor problems, their denial of a problem (and silence on their fix for it) have made me a Tempest fan!
Great spark plug! I rarely have to replace these before theyâre worn beyond spec. I highly recommend tempest spark plugs
I replaced six lower plug on TIO 540. The plugs prior to replacement were new massive plugs, however it was prone to lead fouling after less than 10 hours of flight. I lean it aggressively but unforgiving lead has set plug #4 & #6 foul up. The fine wire in my belief is a must on larger lycoming or continental engine. Highly recommend the fine wire plugs, price is worth it. In my opinion it will pay for itself. I am a Tempest convert now.
There are 12 spark plugs x 2 engines in a Seneca. Had Champions before replacing all the plugs with these winners. No hard starts, no fouling and they look very cool with the stainless bodies. The bonus is lower cost to buy and better fuel economy.
Certified for and a great plug for Lycoming O360. All resistances were between 995 and 1300 ohms. Gaps checked good, no adjustments needed.
We use these plugs in our Pratt and Whitney R1340 engines and have very good luck with them. I highly recommend them to anyone.
I always buy Tempest spark plugs. Nickel coating, resistors that are superior and at competitive priceing I WILL consider any Tempest product before others..
Thanks for the great service. The Tempest plugs arrived on time and as advertised. Im pleased not only with their performance but also with their polished appearance which makes the engine look great.
Yes, the plugs will include the gasket.
The higher the number the higher the heat rating position will be. so the UREM40E vs. UREM38E, the 40E will be the hotter plug because 40 is larger than 38. Hot plugs have relatively long insulator noses and, therefore, a long heat transfer path. Cold plugs have relatively short noses that thus transfer heat more quickly.
Tempest does not have a replacement for an REL37B spark plug.
The H and the E refer to the barrel style. H prefix is shielded 3/4-20 thread and the E prefix is 5/8-24 thread.
"E" designates 5/8"-24. "H" designates 3/4"-20.
5/8"-24: UREB37E, UREM37BY, UREM38E, UREM40E, UREB36S, UREM38S
3/4"-20: URHB32E, URHB37E, URHM38E, URHM40E, URHB32S, URHB36S, URHM38S
The equivalent is the URHB37E. For singles, use part # 08-00247, ad for 12 pack use part # 08-00247-12.
The UREM38S is the fine wire replacement for the REM40E. There is no UREM40S plug.
Part number URHM38S would be the Temepst fine wire replacement.
Yes, massive plugs are gapped .016 to .021 & fine wire are gapped .017 to .021.