This rare 3-bolt to T4 turbo adapter flange allows you to mount a T4-style turbocharger to a standard 3-bolt Buick-style header setup — an extremely hard-to-find piece for custom turbo configurations and classic Turbo Buick upgrades.
Details: • Converts: 3-bolt Turbo Buick header flange to T4 turbo flange • 2.5” center opening for optimized flow • Machined steel construction for durability under high heat and boost • Ideal for hybrid setups, testing, or custom fabrication projects • Compatible with 1986–1987 Buick Grand National / Turbo T / T-Type, or similar 3-bolt configurations
Condition: • Shows light surface oxidation from long-term storage, easily removable with light cleaning or media blasting
✅ All sales are final. No refunds, returns, or exchanges. Items are sold as-is. Buyer is responsible for verifying compatibility with their application.
