What This Tool Does
The compressor:
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Safely compresses valve springs
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Allows removal of valve retainers & keepers
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Simplifies valve seal replacement
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Supports cam and head rebuild work
Designed specifically around 4G63 head geometry.
Key Features
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Lightweight aluminum construction
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Black anodized finish
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Engine-specific fitment
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Reusable and durable design
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Ideal for DOHC 4G63 cylinder heads
Translation: controlled compression, fewer headaches.
Compatible with:
Works on these Models **Equipped with the DOHC 4G63 engine**
For Mitsubishi Eclipse (1990-1999) GST / GSX
For Mitsubishi Evo 8 (2003-2005)
For Mitsubishi Evo 9 (2005-2007)
For Eagle Talon (1990-1998) TSI / TSI AWD
For Plymouth Laser (1990-1994) RS TURBO / RS TURBO AWD
For Mitsubishi Galant VR4 (1988-1992)
Features and Benefits:
It is designed to make replacing valve stem seals & valves prings, retainers, and even valve guides relativelymore easily.
User can do the valve jobs without removing the head from the block (please make sure to pressurize the head).
This valve spring compressor will save you time and money on a new head gasket, and the time it takes to remove the head.
The tool is also quite easy to use simply attach the tool to the head with the supplied bolt and washers.
Then simply mount the steel “cup” onto the retainer that you want to work on, as you “push” the cup down on the retainer.
Then you can release the keepers to remove the retainers and the rest of parts.
4G63 valve spring compressor tool Ideal Applications
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Valve seal replacement
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Upgraded valve spring installs
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Camshaft upgrades
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Full cylinder head rebuilds
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Performance valvetrain builds
Especially useful when installing upgraded springs like performance or high-RPM setups.
Installation Notes
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Ensure cylinder is at proper position
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Use compressed air or rope method to hold valves (if head on engine)
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Keep track of valve keepers
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Inspect retainers and springs during service
Because losing a keeper inside the head ruins your day.
Final Verdict
The Aluminum Valve Spring Compressor Tool for 4G63 (Eclipse / Talon / Evo 8/9) is an essential tool for top-end engine work. Designed for proper fitment, easier service, and safer spring removal.
Because the right tool saves time—and sanity.
Keith G –
Perfect tool collection for your evo. Direct fit and easy to use. Quality of the tool looks and feels good. Definitely worth the money.
Sean –
Worked great! I had 3 cylinder heads to break down and the two generic valve spring compressors I had just could not fit into the tight spots to get the job done. This was a good value for sure! I would recommend it to everyone working on their own motor. There was a comment that it might not be exactly aligned parallel with the valve stem. I perceived the same thing.. but it was so slight. I’d call it an optical illusion or not materially significant to the function. I never leave 5 star reviews but I guess never say never. Hope this info is helpful.
coralia hanson –
This kit is the balls. It works wonderfully and comes with fixturing for both DSM and Evo spring retainers. This kit helped me swap in Evo beehive springs into my DSM 4G63T along with new Evo spring retainers and seats.I’d buy it again but I don’t have to as the kit is durable and will be stashed away with my custom tools for this platform.
Thoune –
The tools came with all the nuts, bolts and springs adapter. The quality of the tools is great and it’s very easy to use. The long screw that screw down on the adapter would need improvement. I would preferred a bolt type.
BIO BLADE –
This tool is cheap for a reason. I was lucky to get 4 done before it crapped out. Had to modify the tool to be used once more
yeison 4g63 –
My first time using it and it took me probably 1 hour to install all springs retainers and keepers absolutely 💯
Forrest –
Worked perfectly for changing valve seals on my 4g63t no issues
Bill From Iowa –
Bought for building my 6-Bolt Spyder swap. Always used other methods of installing including a conventional valve spring compressor tool with homemade adapters, shoulda ordered one of these along time ago cut my valve spring install down by 90%.
cjls –
Works great!
Accurate machining, smooth operation, allows you to pop those keepers out of your valves without having to use a C-clamp style compressor. It might take a little longer but it’s worthwhile for smooth compression of the valve spring.
Sebastien Vincent Seuron –
worked pretty well
worked pretty well