The STM billet block off plugs are typically used to block off the original discharge hose when switching to a fully atmospheric blow off valve. These are available in four sizes to work with almost any application out there.
Sold individually as needed, price is for one block off. Please double check your specs and sizes before purchase.
Features & Specs:
• 6061 billet aluminum
• CNC machined in-house at STM
• STM Products are Made in the USA
• Lifetime Warranty on STM Parts to the original purchaser against manufacturing defects
Purchase Includes:
(1) Plug
| Part Number: | Plug Width OD Outer Diameter: | Overall Height: | Known Fitments: |
| STM-BOP-38 | 38.1mm (1.50″) | 30mm | TBA |
| STM-BOP-34 | 34mm (1.34″) | Fits most Mitsubishi and Subaru (DSM Evo WRX STi) | |
| STM-BOP-29 | 29mm (1.14″) | Fits Nissan R35 GTR | |
| STM-BOP-25 | 25.4mm (1.00″) | TBA |
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