Air and Fuel› Superchargers, Turbochargers and Components

WORK Turbochargers

Turbocharger

$1,450.00

SKU: G4S-6766

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The WORK Turbochargers G4S-6766 is a high-performance turbocharger upgrade specifically engineered for the 1986-87 Buick Grand National, T-Type, and Turbo Trans-Am models. This turbocharger features a robust forged milled 67mm, 7-bladed compressor wheel, designed to support an impressive 800+ horsepower. It is available with various turbine housing configurations, including T3, T4, and V-band options, allowing for tailored performance and fitment. This unit has demonstrated its capability in the 1986-87 Buick Grand National market. It is offered as a supercore only, meaning the housing is not included, and buyers can select from different A/R ratios such as .63 and .85 for the Buick 3-bolt pattern, with high-temperature coatings.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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

BrandWORK Turbochargers
Part NumberG4S-6766
CategoryAir and Fuel
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

Buy with Confidence

Returns & Fitment

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.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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