OEM Vacuum Distribution Block

📏 THE CORE OF YOUR GN'S VACUUM SYSTEM – CLEAN OEM BLOCK

This is a genuine GM vacuum distribution block for the 1986–1987 Buick Grand National. It mounts directly on top of the throttle body and acts as the central hub for vacuum routing throughout the engine bay. This listing is for the block only — no attached vacuum lines — making it a great core for a custom setup or restoration where your lines are being replaced.

✅ OEM GM Vacuum Block – Throttle body mount
✅ Fits 1986–1987 Buick Grand National & Turbo Regal (3.8L Turbo)
✅ Ports intact – no stripped threads or cracks
✅ Original finish – not repainted or modified
✅ Perfect for OEM+ or stock restorations

📦 Quantity in Stock
📌 We have 2 units available — both in comparable condition. The one you receive may not be the exact one pictured, but will meet the same standard or better.

🔷 OEM Tier – Rare factory component. Lines not included, but block is intact and ready to be fitted with fresh hose.