TH400 Hardparts, Shaft Drums

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4L80E Intermediate Outer Sprag Race (REMAN)

Want more strength and performance for your Turbo 400 or 4L80E? Get ATF's 4L80E intermediate (2nd gear) outer sprag race.…

TH400 “SUPER SHAFT” AEROSPACE ALLOY INPUT SHAFT, W/DRUM

TH400 "SUPER SHAFT" AEROSPACE ALLOY INPUT SHAFT, W/DRUM (REQUIRES BUSHING IN TORQUE CONVERTER)

TH400 “SUPER SHAFT” STEEL ALLOY MAIN SHAFT

TH400 "SUPER SHAFT" STEEL ALLOY MAIN SHAFT

TH400 300M ALLOY INPUT SHAFT W/DRUM (LARGER SPLINES SHAFT TO DRUM)

TH400 300M ALLOY INPUT SHAFT W/DRUM (LARGER SPLINES SHAFT TO DRUM)

TH400 300M ALLOY MAIN SHAFT (ALSO FITS 4L80E)

TH400 300M ALLOY MAIN SHAFT (ALSO FITS 4L80E)

TH400 ALUMINUM DIRECT DRUM (7075 BILLET) ASSY. W/36 ELEMENT SPRAG

TH400 ALUMINUM DIRECT DRUM (7075 BILLET) ASSY. W/36 ELEMENT SPRAG

$1,218.00

TH400 ALUMINUM FORWARD DRUM (7075 BILLET) W/ “1 3/16 SHAFT”

TH400 ALUMINUM FORWARD DRUM (7075 BILLET) W/ "1 3/16 SHAFT"

TH400 ALUMINUM FORWARD DRUM (7075 BILLET) W/ 300M ALLOY INPUT SHAFT

TH400 ALUMINUM FORWARD DRUM (7075 BILLET) W/ 300M ALLOY INPUT SHAFT

TH400 Billet Direct Piston

**New** ATF Billet Direct Piston for Aluminum Direct Drums...

TH400 BILLET STEEL FWD DRUM WITH VASCO SHAFT 1 3/16 DIA. (2000+)

TH400 BILLET STEEL FWD DRUM WITH VASCO SHAFT 1 3/16 DIA. (2000+)

$1,170.00

TH400 Boost Valve Assembly

This boost sleeve assembly is made from steel and is precision ground to exact tolerances. O-rings are installed on the…

TH400 DIRECT 5 CLUTCH PISTON, CAST ALUMINUM

TH400 DIRECT 5 CLUTCH PISTON, CAST ALUMINUM

TH400 DIRECT 6 CLUTCH PISTON,MACHINED, CAST ALUMINUM (USE W/ 5 CLUTCH DRUM)

TH400 DIRECT 6 CLUTCH PISTON,MACHINED, CAST ALUMINUM (USE W/ 5 CLUTCH DRUM)

TH400 EXTREME DUTY PUMP ASSEMBLY W/ HEAT TREATED STATOR SUPPORT (200-220 PSI)

TH400 EXTREME DUTY PUMP ASSEMBLY W/ HEAT TREATED STATOR SUPPORT (200-220 PSI)

TH400 FORWARD CLUTCH HUB, BILLET STEEL ALLOY (ALSO FITS 4L80E)

TH400 FORWARD CLUTCH HUB, BILLET STEEL ALLOY (ALSO FITS 4L80E)

TH400 H.D. INTERMEDIATE SPRAG-34 ELEMENT

TH400 H.D. INTERMEDIATE SPRAG-34 ELEMENT

TH400 INTERMEDIATE CLUTCH ELIMINATOR PLATE (ALUMINUM)

This part will eliminate the 2nd gear clutch pack on a 2spd TH400.

TH400 INTERMEDIATE PRESSURE PLATE,5 CLUTCH,STEEL, (FITS 36 ELEMENT SPRAG)

TH400 INTERMEDIATE PRESSURE PLATE,5 CLUTCH,STEEL, (FITS 36 ELEMENT SPRAG)

TH400 Locking Snap Ring

ATF's high performance Spiralox¬†locking snap ring holds the sprag assembly together. Upgrade to this¬† snap ring for extreme reliability. NOTE:…

TH400 LOW-REVERSE ROLLER CLUTCH

TH400 LOW-REVERSE ROLLER CLUTCH

TH400 PUMP ASSEMBLY, RACE PREPARED (180 PSI)

This part helps support the 2nd gear clutch pack snap ring, preventing it from popping out and damaging the case…

TH400 Pump Gears

These pump gears are made in the USA. They are precision ground for an exact fit and superior performance.

TH400 PUMP GEARS (.727″) (65-98)

TH400 PUMP GEARS (.727") (65-98)

TH400 REVERSE BOOST VALVE KIT (INCLUDES O-RINGS) (65-98) (SONNAX)

TH400 REVERSE BOOST VALVE KIT (INCLUDES O-RINGS) (65-98) (SONNAX)

TH400 SONNAX PRESSURE REGULATOR VALVE KIT (USES SEALING RINGS)

TH400 SONNAX PRESSURE REGULATOR VALVE KIT (USES SEALING RINGS)

TH400 SPIROLOC RING (SPRAG RETAINER)

TH400 SPIROLOC RING (SPRAG RETAINER)

TH400 STATOR SUPPORT TUBE, HEAT TREATED W/ BUSHINGS

TH400 STATOR SUPPORT TUBE, HEAT TREATED W/ BUSHINGS