Turbo Accessories
44MM CARBON STEEL BLOW OFF VALVE FLANGE
KEY FACT
44mm Carbon Steel — Precision-machined BOV flanges for all common valve sizes. Leak-free sealing on boost and vacuum cycles. Port Size: 38 mm or 44 mm. Bolt Pattern: 2× M6 or 3× M8. SKU BOVF-44-CS. In stock, ships same day from Miami FL.
SKU: BOVF-44-CS
Precision-machined BOV flanges for all common valve sizes. Leak-free sealing on boost and vacuum cycles. Key specifications: Material: 304 Stainless / Carbon Steel A36; Max Temp: 871°C / 1600°F (SS). The 38mm flange is compatible with Tial QR, Turbosmart Kompact, and HKS Super SQV.
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Technical Specifications
| Port Size | 38 mm or 44 mm |
|---|---|
| Bolt Pattern | 2× M6 or 3× M8 |
| Thickness | 1/4″ (6.35 mm) |
| Material | 304 Stainless / Carbon Steel A36 |
| Flatness | ±0.005 in |
| Max Temp | 871°C / 1600°F (SS) |
Variant Comparison
All Blow Off Valve Flange options — your selection is highlighted
| Blow Off Valve Flange Variant | Price | Port Size | Bolt Pattern |
|---|---|---|---|
| 38mm 304 Stainless | $24.00 | 38 mm or 44 mm | 2× M6 or 3× M8 |
| 44mm 304 Stainless | $26.00 | 38 mm or 44 mm | 2× M6 or 3× M8 |
| 38mm Carbon Steel | $16.00 | 38 mm or 44 mm | 2× M6 or 3× M8 |
| 44mm Carbon SteelSELECTED | $18.00 | 38 mm or 44 mm | 2× M6 or 3× M8 |
Frequently Asked Questions
About the 44mm Carbon Steel Blow Off Valve Flange
What BOV brands does this flange fit?
The 38mm flange is compatible with Tial QR, Turbosmart Kompact, and HKS Super SQV. The 44mm version fits Tial MVR, TiAL V60, and Synapse Synchronic BOVs.
Do I need a gasket?
The face is ground to Ra 1.6 μm. A factory paper gasket is acceptable; skip it only on show builds where aesthetics matter. Silicone bead recommended above 25 PSI.
Can I weld this flange directly to piping?
Yes. The carbon-steel variant is fully weldable with MIG, TIG, or stick. The stainless version requires TIG with ER308L filler and back-purging for the cleanest weld.