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FTI Performance TH400 Level 4 Transmissions TH400-4K21 Automatic Transmission Package, level 4, Dipstick & Tube, Cooler Lines, Cooler, ATF Fluid, SST89-0 Racing Billet Stall Converter, Kit

SKU: FTITH400-4K21

Automatic Transmissions

FTI Performance TH400 Level 4 Transmissions TH400-4K21 Automatic Transmission Package, level 4, Dipstick & Tube, Cooler Lines, Cooler, ATF Fluid, SST89-0 Racing Billet Stall Converter, Kit

SKU: FTITH400-4K21

Automatic Transmissions
A$12,483.10
IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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Description

FTI Performance TH400 Level 4 transmissions feature a full manual valve body equipped with a transbrake for the ultimate drag racer. They make an excellent choice for weekend bracket racers, high-powered street cars, and mud trucks. The transmissions have: a 34-element intermediate sprag, performance clutches and steels, high-flow pump, race-prepped stock case, deep aluminum pan, billet forward clutch hub, heavy-duty intermediate retainer, and a 4-clutch intermediate pack. Some models are compatible with Ultra Bell bellhousings.

Part Type

Automatic Transmissions

Data: v4.2 - Upd: 2026-09-29 01:13:03

Specifications

Product Attributes - Brand
FTI Performance
Product Attributes - Manufacturer's Part Number
TH400-4K21
Product Attributes - Part Type
Automatic Transmissions
Product Attributes - Product Line
FTI Performance TH400 Level 4 Transmissions
Product Attributes - UPC
887753824790
Product Attributes - Number of Gears
3
Product Attributes - Bellhousing Bolt Pattern Manufacturer
Chevy
Product Attributes - Transmission Shift Pattern
Reverse
Product Attributes - Valve Body Style
Full manual
Product Attributes - Transmission Advertised Horsepower Rating
900
Product Attributes - Torque Converter Included
Yes
Product Attributes - Flexplate Included
No
Product Attributes - Transmission Controller Included
No
Product Attributes - Wiring Harness Included
No
Product Attributes - Transmission Cooler Included
Yes
Product Attributes - Advertised Flash Stall Rating
3,400-3,800 rpm
Product Attributes - Trans-Brake Included
Yes
Product Attributes - Lockup Compatible
No
Product Attributes - Transmission Pan Style
Deep
Product Attributes - Transmission Pan Material
Aluminum
Product Attributes - Transmission Pan Finish
Natural
Product Attributes - Yoke Style
Slip-on/bolt-on
Product Attributes - Input Spline Quantity
30
Product Attributes - Input Shaft Material
Hardened steel
Product Attributes - Input Shaft Style
TH350/400
Product Attributes - First Gear Ratio (Automatic Transmissions)
2.43
Product Attributes - Clutch Hub
Billet Steel
Product Attributes - Transmission Case Style
OEM
Product Attributes - Transmission Case Material
Aluminum
Product Attributes - Transmission Case Finish
Black
Product Attributes - Transmission Shield Built In
No
Product Attributes - Flexplate Shield Built In
No
Product Attributes - Fluid Fill Location
Case
Product Attributes - Transmission Fluid Included
Yes
Product Attributes - Transmission Fluid Quantity Included
12 qt.
Product Attributes - Dipstick Included
Yes
Product Attributes - SFI Rating
SFI 4.1/ 30.1
Product Attributes - Remanufactured
Yes
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Notes
This kit includes a 3400-3800 stall billet torque converter equipped with a mech. diode and balloon plate. The kit also includes FTI's 3gal RacerPak of performance ATF and a locking dipstick & tube. Kit also includes a complete cooler kit that includes the cooler, 15ft of line, hose ends, and fittings.

Reference Information

Brand Name/s Fti Performance
StreetFX SKU ftiTH400-4K21
SFX Item ID 5031081
Supplier Item Code 5031081
Manufacturer SKU TH400-4K21
Manufacturer UPC 887753824790
Alternative References TH400, SST89-0

Compatibility

Application Data
  • MakeCHEVROLET
    Engine TypeV8
    Transmission Manufacturer CodeTHM400
    DrivetrainRWD
    Application NotesThis kit includes a 3400-3800 stall billet torque converter equipped with a mech. diode and balloon plate. The kit also includes FTI's 3gal RacerPak of performance ATF and a locking dipstick & tube. Kit also includes a complete cooler kit that includes the cooler, 15ft of line, hose ends, and fittings.

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