STM 3.5" Aluminum SD Intake (No MAF) for Evo 8/9

The STM 3.5" aluminum intake pipe was designed specifically for Evo 8/9 bolt-on FP Turbos such as the Red, Black, Zero and Zephyr and works great with any stock or stock-placement turbo. Available in your choice of finish with a matching coupler for your turbo.

Features a 3.5" aluminum intake pipe, 9" long K&N filter and a high-quality silicone coupler.

Vehicle Fitment:
2003-2006 Evolution VIII IX
• Designed for Bolt-On Turbos
• For Speed Density Only
• Does not work with the MAF
• Fits both ACD and NON-ACD models.
• Can be used with the STM Sealed Catch Can (with -10AN Bung)

Speed Density:
This intake pipe does not work with the MAF, and is used for speed density only.

ACD:
The STM 3.5" Intake Pipe will fit both Evo 8 and 9 and will clear the ACD reservoir.

What's the Bung For?
Adding the -10AN bung on the underside of the pipe is allows you to use the STM Sealed Catch Can which vents from the can to the intake pipe.

Install Notes:
If you're not using a catch can, we would suggest to vent your crankcase via the valve cover. This is the K&N Breather Filter you'll need: 62-2470

Features:
• 3.5" Tig-Welded Aluminum Piping
• Huge 9" K&N Air Filter
• Fits ACD & Non-ACD
• Optional -10AN Fitting for STM Sealed Catch Can
• For Speed Density
• STM Products are made in the USA!
• Lifetime Warranty on STM Parts to the original purchaser against manufacturing defects.

Options:
• -10AN Bung
• Coupler Size for Turbo
• Brushed Aluminum
• Wrinkle Black Powdercoat

Includes:
(1) K&N Air Filter (RE-0920)
(1) STM 3.5" Aluminum Pipe
(1) STM Reducing Coupler
(2) Worm Clamps for Coupler

Notes:
Polished has been discontinued as of September 2025
STM-EVO89-INT35-AL-PO-25, STM-EVO89-INT35-AL-PO-3, STM-EVO89-INT35-AL-PO-325, STM-EVO89-INT35-AL-PO-35, STM-EVO89-INT35-AL-PO-4, STM-EVO89-INT35V-AL-PO-25, STM-EVO89-INT35V-AL-PO-3, STM-EVO89-INT35V-AL-PO-325, STM-EVO89-INT35V-AL-PO-35, STM-EVO89-INT35V-AL-PO-4