Drivetrain› Automatic Transmissions and Components

TCI Automotive

TH400 TAILHOUSING

$303.52

SKU: T00M 226405

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

These TCI PRO-X TH400 aluminum tailhousings feature light weight and improved strength, while using a tailshaft roller bearing rather than the factory bushing for superior lubrication and durability. The OEM bushing is a common failure point with TH400 transmissions, as it can run dry in high-speed TH400 applications. The TCI PRO-X TH400 aluminum tailhousings are more rigid than other factory or aftermarket tailhousings, with increased structure for added support and durability. The use of the roller bearing provides added lubrication, and the usually unreliable paper gasket used to seal the housing to the transmission is replaced with a precision-machined surface that incorporates an O-ring for a solid, drip-free connection. Build a stronger transmission and have better reliability with one of the TCI PRO-X TH400 aluminum tailhousings.
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TH400 TAILHOUSING

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

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Specifications

BrandTCI Automotive
Part NumberT00M 226405

Videos

TH400: How To Recipe for 800-1000HP

TH400: How To Recipe for 800-1000HP
Spending THOUSANDS of dollars on a TH400 that didn't last! Builder error and set up for failure.

Spending THOUSANDS of dollars on a TH400 that didn't last! Builder error and set up for failure.
TH400 & 4L80E - Rollerizing the Rear Case

TH400 & 4L80E - Rollerizing the Rear Case
TH350 vs. TH400 Transmission #transmission #th350 #th400 #transmissionswap #chevy

TH350 vs. TH400 Transmission #transmission #th350 #th400 #transmissionswap #chevy

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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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