Additional Images

Accufab 86-87 Buick Grand National 3.8L Polished CNC Plenum

GNPLENUM
This Accufab Plenum is specifically designed as a direct bolt on for use on the 1986-1987 Buick Grand National 3.8L V

*Notice Accufab updated this part in Early 2026, it is now CNC machined from solid billet aluminum instead of the old cast aluminum in the past.
Limited Supply: only 1 remaining
Shipping: FREE continental USA ground shipping on ALL Accufab Throttle Bodies!
Was: $489.99
Sale: $389.99
Save: 20%
Save: $100.00

Qty:
Free Basic Shipping

Description

What's In The Box?
CNC Ported Polished Plenum
Plenum Manifold Gasket
Metric and Standard Bolts
Throttle Body O-Ring

Details

Categories

Shipping Information

  • Item Requires Shipping
  • 4.0 lbs.
  • W8.0000” x H8.0000” x L5.0000”
  • Free Basic Shipping
  • FREE continental USA ground shipping on ALL Accufab Throttle Bodies!

  • Have a question? Ask the Pros
  • 877-514-9494Mon - Fri 8:00 AM - 4:00 PM PST