Product arrived on time and as ordered!!

John C Verified Purchase

TEMPEST SPARK PLUG URHM38S XL

I have been very pleased with these plugs. This is my second set. Each plug comes individually wrapped and sealed. I plan to swap out this set with the Tempest plugs I currently have installed. That way I can have fresh plugs in while I go over the shop to clean, re-gap, and resistance test them. I test my plugs every 50 hours and so far these have performed flawlessly! For me having 2 sets make sense.

William B Verified Purchase

TEMPEST PLUG URHB37E 12 PK

One spark plug was unusable out of the package. The threads were distorted.

A&p S Verified Purchase

TEMPEST SPARK PLUG UREM40E

Works good, doesn’t foul even on bottom side of new cylinders with all that oil and junk in there while it’s wearing in.

Kristopher W Verified Purchase

TEMPEST SPARK PLUG UREM37BY

Tempest sparkplugs are the best. Great pricing. Thanks

Chadwick L Verified Purchase

TEMPEST SPARK PLUG UREM40E

Great product

Chadwick L Verified Purchase

TEMPEST SPARK PLUG UREM40E

Product performed as expected.

George W Verified Purchase

TEMPEST SPARK PLUG UREM40E

fast shipping

Fredrick G Verified Purchase

TEMPEST SPARK PLUG UREM38E

I previously installed these in the lower plugs in an IO-540 engine to eliminate lead fouling. When the standard plugs in the tops needed replacing I upgraded to the Tempest fine wire plugs. The engine now runs noticeably smoother and the mag drops are minimal. I also noticed a drop in EGTs during takeoff. I recommend these spark plugs.

Free S Verified Purchase

TEMPEST SPARK PLUG UREM38S

product performed as expected

Ed T Verified Purchase

TEMPEST SPARK PLUG UREM38S

Outstanding

Trym J Verified Purchase

TEMPEST PLUG URHB32S 12 PACK

Are about the same length as the champion rem40e they replaced. Great for tight spots.

Chad H Verified Purchase

TEMPEST SPARK PLUG UREM37BY

despite being improperly packed for shipping and boxes damaged plugs preformes as expected.

Exec A Verified Purchase

TEMPEST PLUG URHB32E 12PK

They seem better than the champion plugs that were replaced

Glen D Verified Purchase

TEMPEST SPARK PLUG UREM40E

seem great so far, engine started right up and ran smooth

Penny M Verified Purchase

TEMPEST SPARK PLUG UREM40E

Great plugs

Miguel A Verified Purchase

TEMPEST PLUG UREM40E 12 PK

Have used many boxes of these over the years they work great.

Carrizozo A Verified Purchase

TEMPEST SPARK PLUG UREM40E

I bought the fine wire spark plug. To put in the bottom of my cylinder 3. Although the compression still reads 71 it seems to pump oil on that bottom plug. I have only put 4 hours on it so far. But performance seems to be the same as the massive one. I change oil and rotate plugs every 25 hours. I’ll let you know.

Jay B Verified Purchase

TEMPEST SPARK PLUG UREM38S

My plane became hard to start and skipped occasionally. At first, I thought it might be my mags, but decided to try a new set of Tempest plugs first. Wow! What a difference. Now, she starts easily and purrs like a kitten :-)

D. R Verified Purchase

TEMPEST SPARK PLUG UREM40E

I like Tempest above the rest

Judson C Verified Purchase

TEMPEST PLUG URHB32E 12PK

I have purchased these before and really like them!

Edwin G Verified Purchase

TEMPEST SPARK PLUG UREM38S

I have purchased these before and really like them!

Edwin G Verified Purchase

TEMPEST SPARK PLUG UREM38S

Great product, this is my second set. Huge performance difference.

Charles M Verified Purchase

TEMPEST PLUG URHB36S XL 12 PK

Exactly as advertised. Adjusted the gap slightly and worked perfect. Broke the fine wire on an old plug and needed one replacement.

Paul J Verified Purchase

TEMPEST SPARK PLUG URHM38S XL

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 they’re 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.

Good Buy

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.

I've had fine where plugs in my Grumman Cheetah 0320 for about two years, they really work well and I always get the same mag drop with the upper or lower plugs. While they work perfectly, the exterior of the plugs corroded excessively. I mentioned this to Brian Cox at the Tempest booth at Sun n fun, he said for a short while they had an issue with their plating vendor. I sent him some pictures and the date codes, and I just received a completely new set of plugs! This type of customer service is remarkable-I will remain a staunch Tempest customer.

Been providing excellent service to our clubs fleet of light planes & am very happy with the service longevity of them.

Pugetsoundflyers, I Verified Purchase

TEMPEST SPARK PLUG UREM40E

Last much longer and foul much less than standard massive plugs. The downside is the high price.

Jonathan G Verified Purchase

TEMPEST SPARK PLUG UREM38S

Nice Spark Plugs bought with new Kelly Harness My birds starting quicker and running smoother now. The Fit and Finish of these nickel plated plugs is very good.

great spark plugs but too expensive. Also, I wish there was a better and inexpensive way to figure out the spark plugs condition etc...

Good value for money

Plane runs well so far. Had to regap a few plugs out of the box. Quality control by Tempest?? Lost confidence in Champion after their spark plug resistance issue and magneto point redesign. Hopefully Tempest wont go the same way with their quality control.

performs as advertised.

2 of the eight spark plugs I ordered had defective threads and could not be used . not a happy camper

Dr. N Verified Purchase

TEMPEST SPARK PLUG UREM38E

11 of the 12 plugs had scratches / gouges in the ceramic insulator where the lead goes in.