Description
Why Replace Your OEM Mitsubishi BISS Screw?
This is the best BISS screw you’ll ever own! You know the OEM plastic one… the base idle set screw that loves to dry rot, crack, and strip the Pozi Drive head? FIBA Motorsport has fixed all that. Our billet version is built to last a lifetime. Just install it once, and you’ll never need another. Seriously… one screw for the life of your car.
Installation is as easy as adding a bit of anti-seize on the threads and installing the new BISS screw.
Product Specs
- ✓ CNC Machined Billet Aluminum
- ✓ Anodized Gold Finish
- ✓ 5mm Hex Head (ease of adjustments and pulling of the BISS screw should you need to)
- ✓ Direct OEM Replacement
What’s in the Box
- 1x Billet BISS Screw (Gold)
- 2x High-Temp O-Rings (uses one at a time – one is a spare)
- 1x Custom Rubber Dust Cap for your new BISS screw
KEY reasons for this new product version
- Never dry rot like a plastic Biss does
- ZERO pozi drive to round out and cause issues
- If you need to drill the plastic one out, you leave plastic inside your TB and intake manifold – which is NOT ideal!
Vehicle Fitment and Compatibility
This is a direct replacement for OEM Part Number MD614948. Verified fitment for:
- 1G DSM (Eagle Talon, Plymouth Laser, Mitsubishi Eclipse)
- 2G DSM (Eagle Talon, Mitsubishi Eclipse)
- Mitsubishi Lancer Evo 1-9
- Mitsubishi 3000GT / GTO VR4 (1991-1999)
- Dodge Stealth R/T (1991-1996)
- Mitsubishi Galant (1996-2005) – (confirm Throttle body first)
NOTES: Once you have installed the BISS screw, it is advised to reset your idle to be correct via your ECU. Failure to do this properly could result in a high/low idle.






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