My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

BorgWarner 178789 S400SX Turbine Housing 1.10 A/R T4 87mm Twin Scroll

Manufacturer

Picture for manufacturer Borg Warner

Part Number

178789
13 reviews
Sale Price

$198.22

In Stock (8)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The BorgWarner 178789 turbine housing is engineered for S400SX and S400SX-E series turbochargers, delivering high-performance exhaust flow management for competitive motorsports applications. This genuine AirWerks component features a divided twin-scroll volute design that enhances pulse separation and reduces backpressure for improved cylinder scavenging.

Key Specifications:

  • 1.10 A/R (Area/Radius) ratio for balanced spool and top-end performance
  • 87mm turbine wheel compatibility
  • T4 divided inlet flange configuration
  • Twin-scroll (VTF - Variable Twin Flow) design
  • Cast iron construction for durability under extreme heat and boost conditions

This turbine housing is ideal for street/strip single turbo setups, compound turbo configurations, and high-horsepower diesel applications ranging from 500-1050 HP. The 1.10 A/R sizing provides an excellent balance between responsive spool characteristics and strong top-end flow, making it well-suited for drag racing, pulling, and road racing applications where both quick throttle response and sustained high-RPM power delivery are critical.

Note: This is the turbine housing only and does not include mounting hardware or gaskets. Compatible with BorgWarner S400SX3 and S400SX-E turbocharger families.

very easy page to navigate and great price, I ordered a second shipment of the same item, best price in town, thanks.

Seller had the best price online for the item I wanted! Responded to emails within 24 hours as stated, and sent me my tracking info as soon as part shipped. Thanks Autoplicity!

Great price, and quick processing of my order. Will use again.

Was linked here by Amazon. I found the absolute best price on the item I was looking for, I had a confirmation as soon as I ordered it, and shipping as prompt. I would definitely recommend these guys and will be shopping here myself in the future.

Easy

Price is the lowest price you can get anywhere. Customer service goes the extra mile helping me with my oder. Delivery was fast and products were as advertised. I will definitely order from Autoplicity again.

So far so good

Awesome dealer for auto-parts. Fast shipping and they sell good products at great prices! Bought set of club racing brake pads for $15 less than anywhere else on a Saturday and they were here the following Wednesday. I'm in Memphis and it was the week before Christmas. I was very impressed and pleased!

Good Job !

Autoplicity exceeded expectations and produc

Easy to use site!

PARTS WERE CHEAPER THAN MOST

Great price and great service highly recommended. Will purchase again

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy