901-05 Aluminium washer 1/2"-12mm (EACH)

Speedflow 901-05 | 1/2" (12mm) Aluminium Sealing Washer — Sold Individually

The Speedflow 901-05 is a precision-made 1/2" (12mm) aluminium sealing washer — an essential consumable for motorsport and performance automotive builds running banjo bolt fittings, drain plugs, and ported components with 1/2" / M12 fasteners. Soft aluminium construction compresses on tightening to conform to mating surfaces, creating a clean, reliable, leak-free seal without thread sealant or PTFE tape. The 1/2" / 12mm size is widely used across oil, fuel, and cooling system drain and banjo bolt applications.

Why Choose the Speedflow 901-05?

• Soft aluminium construction — compresses to conform to mating surfaces for a positive, leak-free crush seal
• 1/2" (12mm) internal diameter — suits 1/2" / M12 banjo bolts, drain plugs, and port fittings on engines, gearboxes, and oil systems
• No sealant required — aluminium crush washers seal on compression alone for a clean, professional result
• Single-use design — should be replaced each time the fitting is removed to ensure a fresh, reliable seal
• Ultralight at just 1g — negligible weight for a critical sealing component
• Sold individually — order the exact quantity needed for your build or service

Ideal Applications

1/2" / M12 banjo bolt seals on fuel system components, oil drain plugs, engine and gearbox port sealing, turbocharger oil feed and drain banjos, and any application requiring a 1/2" (12mm) aluminium crush washer.

Specifications

• Part Number: SF901-05
• Internal Diameter: 1/2" (12mm)
• Material: Aluminium
• Type: Sealing / Crush Washer
• Weight: 1g
• Sold: Individually (each)

Stock held locally in Perth, WA — fast dispatch Australia-wide.