Air and Fuel› Superchargers, Turbochargers and Components

TDI

S400 Series Turbocharger

$1,399.00

SKU: TDI-491-102

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

Advanced — 4+ hours

Overview

The TDI S400 series turbocharger features a 102mm turbine wheel and a 91mm billet compressor wheel. This turbocharger can be used for both gas and diesel applications.

TDI offers budget-friendly turbo alternatives that provide amazing performance at a competitive price.
Show original supplier description
The TDI Billet S491/102 is a turbocharger from the S400 series, designed for both gas and diesel applications. It features a substantial 102mm turbine wheel paired with a high-performance 91mm billet compressor wheel, aimed at delivering significant airflow and power. TDI positions itself as a provider of budget-friendly turbochargers, emphasizing that the S491/102 offers excellent performance capabilities at an attractive price point. The product specifications list includes its series (S400), turbine wheel size (102mm), and compressor wheel type (91mm Billet). Customers can customize their purchase with various options, including different cover types (Compact Race Cover, V2 Cover), cover coating options (none, Powder Coated, Polished, Smooth), and exhaust housing configurations (e.g., 1.15 T6 Divided, 1.25 T4 Divided). Additional gasket sets and an optional Maven Mount are also available. An ITI air filter is also offered as an add-on for the Compact Race Cover.

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

BrandTDI
Part NumberTDI-491-102
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.

View Full Return Policy

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.

View Full Shipping Policy