Air and Fuel› Intake Manifolds and Components

Precision Turbo

Upper Plenum Adapter

$239.99

SKU: PEP022-1011

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Precision Turbo PEP022-1011 is an upper plenum adapter designed for 1986-1987 Buick Turbo Regals and 1989 20th Anniversary Turbo Trans Ams. It addresses the airflow distribution issue in the factory upper plenum, which can lead to lean conditions in rear cylinders. Manufactured from cast aluminum and CNC machined, this adapter increases internal volume, potentially supporting more horsepower.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandPrecision Turbo
Part NumberPEP022-1011
CategoryAir and Fuel

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy