Buick GS 400 Performance Engines

Your One-Stop Shop For Trusted Buick GS 400 Performance Engines

If you’re in search of Buick GS 400 Performance Engines aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 5 Performance Engines from top brands with prices ranging from $26.99 to $141.99.

Beyond great prices, we stock trusted brands manufacturing all types of Performance Engines for your Buick GS 400. Of the 3 OEM and aftermarket parts brands we carry, some of the most popular are Mr. Gasket, Edelbrock, and FEL-PRO Performance.

And don’t forget to read customer reviews across all Performance Engines categories in our catalog. Buy with confidence by leveraging past customer experiences of our aftermarket and OEM parts.

At Advance Auto Parts, we don’t think top quality Performance Engines have to cost top dollar, and we prove it. Browse our top Buick GS 400 Performance Engines below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

Essential Buick GS 400 Performance Engines

Edelbrock – Sure Seat Valve Springs for Chrysler 383-400-413-440 V8 1969-79 (Part No.5792)

Sure Seat Valve Springs for Chrysler 383-400-413-440 V8 1969-79

from

$141.99
Product Features:
  • Non-Rotator Type
  • 1.550 in. Outer Diameter
  • .190 Wire Size
  • Single Coil Spring Type
  • Set of 16
See More

Mr. Gasket – Water Neck (Part No.2557)

Water Neck

from

$27.49
Precision die cast, these water necks are first polished to a high luster, then chrome plated. Features an O-ring style seal to prevent water leaks. Comes with O-ring gasket and mounting bolts.

Product Features:
  • Complete with o-rings and mounting bolts
  • Features an o-ring style seal to prevent water leaks
  • Chrome plated
  • 1/2″ NPT port can be used for various coolant temp related sensors or switches
See More

Edelbrock – Valve Cover Gasket Set for Buick (Part No.7546)

Valve Cover Gasket Set for Buick

from

$35.99
The Edelbrock valve cover gaskets #7546?provide excellent sealing integrity and conformability for easy installation. The multi-layer construction has two highly compressible, high rubber content, fiber-reinforced outside layers which are chemically bonde

Product Features:
  • 0.1875 in. Thickness
  • Core-Reinforced-Composite Material
  • For Buick 400-455
  • Set of 2
  • Made In The USA
See More

FEL-PRO Performance – Cylinder Head Gasket: Steel Core Composite, Without Head Bolts (Part No.1125)

Cylinder Head Gasket: Steel Core Composite, Without Head Bolts

from

$106.99
Fel-Pro Performance Gaskets deliver reliable sealing under grueling racing conditions

Product Features:
  • PROPRIETARY COATING – Nonstick anti-friction coating seals small surface imperfections
  • NO RETORQUE DESIGN – Steel core helps eliminate the need for retorquing head bolts
  • SUPERIOR SEAL – Precise embossed Printoseal sealing beads at all vital areas to eliminate leak paths
  • STRONG AND DURABLE – Features graphite or reinforced fiber facing material and steel armor for strength and durability
  • DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
See More

Mr. Gasket – High Performance 180 Degree Thermostat for Increased Flow (Part No.4364)

High Performance 180 Degree Thermostat for Increased Flow

from

$26.99
Mr. Gasket High Performance Thermostats are designed to resist large variations of coolant pressure at high RPM (revolutions per minute). This allows them to fully open at correct temperature consistently regardless of engine RPM. The design also provides the high flow that engines operated a higher RPM need. This thermostat also features a copper/brass construction to further resist corrosion. Mr. Gasket High Performance / High Flow Thermostats are suitable for street, drag race, or oval track applications.

Product Features:
  • Opens At 180 Degrees
  • Designed to Resist Large Variations of Coolant Pressure at High RPM
  • Fully Opens at Correct Temperature Consistently Regardless of Engine RPM
  • For High Performance Street, Drag Race, and Oval Track
  • Copper & Brass Construction – Resists Corrosion
  • High Flow
See More

Performance Engines Brands You Can Trust For Your Buick GS 400

3 trusted brands of Performance Engines line our shelves, ready to help keep your Buick GS 400 running smooth. Below are some of the most popular brands and their top Performance Engines offerings:

Popular Mr. Gasket Performance Engines

Mr. Gasket products for the Buick GS 400 span several categories. Some of the highest-rated Mr. Gasket Performance Engines that will fit your Buick GS 400 are:
High Performance 180 Degree Thermostat for Increased Flow
from $26.99
(20)
High Performance 180 Degree Thermostat for Increased Flow
Performance Engine Coolant Thermostats

Most Purchased Buick GS 400 Performance Engines from Mr. Gasket

When you buy the most frequently purchased Mr. Gasket brand Performance Engines, you can be confident it will be the right part for your Buick GS 400. Here are the Mr. Gasket Performance Engines Advanced Auto customers buy the most:
High Performance 180 Degree Thermostat for Increased Flow
from $26.99
(20)
High Performance 180 Degree Thermostat for Increased Flow
Performance Engine Coolant Thermostats
Water Neck
from $27.49
This product is not rated
Water Neck
Performance Water Outlets
Valve Cover Gasket Set for Buick
from $35.99
This product is not rated
Valve Cover Gasket Set for Buick
Performance Engine Valve Cover Gasket Sets

FAQs for Buick GS 400 Performance Engines

What are the most purchased Performance Engines for the Buick GS 400?

Out of 5 Performance Engines for the Buick GS 400, the most popular in our inventory are:
Water Neck
from $27.49
This product is not rated
Water Neck
Performance Water Outlets
Valve Cover Gasket Set for Buick
from $35.99
This product is not rated
Valve Cover Gasket Set for Buick
Performance Engine Valve Cover Gasket Sets
Sure Seat Valve Springs for Chrysler 383-400-413-440 V8 1969-79
from $141.99
This product is not rated
Sure Seat Valve Springs for Chrysler 383-400-413-440 V8 1969-79
Performance Engine Valve Springs