Parts/Engines & fuel/Engine accessories/O.S. No.8 Short Body Standard Glow Plug "Medium"
O.S. No.8 Short Body Standard Glow Plug "Medium"
O.S.

O.S. No.8 Short Body Standard Glow Plug "Medium"

Part # OSM716080014.6(9)
Where to buy
$9.99
AMain Hobbies
Seen Oct 11, 2026
$9.99Buy
Prices are as last seen at the store; stock is not tracked.

About this part

The O.S. #8 glow plug is the most widely used O.S. glow plug for O.S. engines. Recommended for most current O.S. (and other brands of) 2-stroke R/C engines. Note that O.S. engine plugs are SHORT body plugs and should only be used in engines that require a short body plug. O.S. plugs should not be used in Novarossi, RB Concept and most other motors manufactured in Europe.

Features:
  • Medium heat range plug for most model engine applications.
  • Plug is medium length, without idle bar.
  • For all 2 stroke engines.
See the O.S. glow plug chart below to compare the different short body standard glow plugs available for O.S. engines:

Model Heat Range Description
No.6 Hot Formerly known as the OS A3 plug. This hot plug will provide a more stable idle and crisp acceleration when compared to a cold plug. This plug is recommended for low nitro content fuels and .12 class engines.
No.7 Medium Hot Slightly "hotter" than the #8 and ideal for the constant "on/off" throttle action in 1/10 and 1/8 scale racing.
No.8 Medium A medium heat range plug for 1/8 scale racing and most .12-21 car, boat and truck engines.
No.10 Cold Formerly known as the OS A5 plug. This is now rated as a cold plug and is recommended for high nitro content fuel. This cold plug will produce the most power, but will provide a less stable idle and a narrow tuning window

Reviews4.6 · 9 reviews

Jaden LobbiaVerified owneron O.S. No.8 Short Body Standard Glow Plug "Medium"

These are the best plugs I use in my nitro engines (short plug). I have tuned hundreds of cars, helis, and planes, and this by far is the longest lasting, best performing plug I have ever come across. At the moment all the cars in my collection with short plug engines run the OS 8. The ones with a standard plug engines run OS LC3s. Buy with confidence.

2 found this helpful
Jesse BodineVerified owneron O.S. No.8 Short Body Standard Glow Plug "Medium"

I've never met an engine that wouldn't run with one of these. Cox 0.049? Throw an adapter on it, screw in an OS 8, and ittl run. Car engines? If they accept standard plugs, the OS 8 will work well. Plane engines? My 46AX runs an OS 8, OS 8s have run engines up to 30CC. They'd probably work in a four stroke but I don't have one to test! If you still run glow and are pondering glow plugs, get an OS 8. Your engine WILL run on this plug. If it doesn't, the problem isn't with the glow plug.

1 found this helpful
Andries BuskensVerified owneron O.S. No.8 Short Body Standard Glow Plug "Medium"

Best glow plugs ever built ever in the history of ever. Any questions?

Michael GonzalesVerified owneron O.S. No.8 Short Body Standard Glow Plug "Medium"

Exactly as described and fast shipping as always!Great product!O.S is where it's at!

Andrew PopeVerified owneron O.S. No.8 Short Body Standard Glow Plug "Medium"

perfect fit for my kyosho fw06 long run times and long lasting

What reviewers say

Reviewers largely rate the O.S. No.8 Short Body Standard Glow Plug highly, with most giving five stars. Several describe reliable running and long life in nitro cars, aircraft and a helicopter engine, and one owner reports two years of trouble-free use. One reviewer says the plug works across a wide range of engines, including small two-stroke and larger engines up to 30cc, though a four-stroke was not tested. Praise for fast shipping and accurate listing appears in some reviews. One reviewer gave a one-star rating with no reasons given. Another owner has not yet tried it in a specific engine and only repeats what they heard. Several reviews are brief or generic, so the evidence on specific engine types is limited.

  • + Long-lasting
  • + Reliable running in nitro engines
  • + Good performance
  • + Wide engine compatibility
  • − One unexplained one-star rating
  • − Limited testing outside two-stroke engines
Summary generated from the reviews above.

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