HKS 08 Lancer Evolution GSR/MR M-Series Spark Plugs (Heat Range 9) - Pack
of 10 (Part #50003-M45XL)
Stock Plugs Melt At High Boost. Do Not Risk It.
You tuned your Evo. More boost. More power. More heat. The stock spark plugs? They were not made for this. At 25 psi, the ground strap gets hot. It glows. It acts like a glow plug. You get pre-ignition. Then you get a hole in a piston.This is the HKS M-Series Super Fire Racing Spark Plug. Part #50003-M45XL. Heat range 9. Pack of 10.HKS knows Evos. They built their name on this platform. These plugs are made for high boost. High RPM. High heat.Why Heat Range 9?
Stock Evo plugs are heat range 6 or 7. That is fine for stock boost. At 20+ psi, you need a colder plug. Heat range 9 is cold. It pulls heat away from the tip. No hot spots. No pre-ignition. No melted pistons.Why A Pack Of 10?
Because the Evo has 4 cylinders. You only need 4 plugs. So why 10? Spares. Keep them in your glove box. When you foul a plug at the track, swap it. When you do a tune-up, grab fresh ones. Four for the car. Six for later.Why HKS Over NGK?
NGK makes good plugs. I run them in my daily driver. But HKS has these made to their spec. The iridium center electrode is 0.6mm. Very fine. Very precise. The platinum chip on the ground electrode lasts longer. HKS tested these on their own Evos. They know what works.Features & Benefits
- Heat range 9: Cold plug. For high boost. For track use.
- 0.6mm iridium center electrode: Fine tip. Strong spark. No misfires.
- Platinum chip on outer electrode: Lasts longer. Less wear.
- M-Series: HKS's performance plug line.
- Pack of 10: 4 for your car. 6 spares.
- Made for Evo X: Fits 4B11T engine.
Vehicle Fitment
Exact fit for:- 2008 Mitsubishi Lancer Evolution GSR (4B11T)
- 2008 Mitsubishi Lancer Evolution MR (4B11T)
- Evo 7, 8, 9 (different thread reach)
- Non-turbo Lancers
- Other Mitsubishi models
What Is In The Box?
Ten HKS M-Series spark plugs. Heat range 9. Pre-gapped. Ready to install.FAQ
What gap should I run?
HKS pre-gaps these. Do not touch the gap. Do not use a gap tool on fine wire iridium plugs. You will break the tip.How often should I change them?
On a street tuned Evo? 10,000 to 15,000 miles. On a track car? Check them every event. Change them when the electrode wears.Will these work on my stock Evo?
Yes, but heat range 9 is cold for stock boost. You might foul them in stop and go traffic. If you are stock, stay with heat range 7. If you are tuned, run these.Why 10 plugs instead of 4?
Because you will foul plugs at the track. Because you will need spares. HKS sells them in 10-packs so you have extras. Smart move.Can I use these in my Evo 9?
No. Evo 9 uses a different plug thread pitch and reach. These are for Evo X 4B11T only. Do not force them. You will ruin your cylinder head.
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