Browse all torque converter parts here, or use the filters below to find exactly what you’re looking for.
Where to BuyDesigned from the ground up to outperform OE and other aftermarket components, Sonnax has you covered with a full line of performance converter kits for gas and diesel vehicles. Offering the widest variety of options in the aftermarket, these innovative kits deliver customized performance and value.
This unique design for a one-way clutch assembly known as the "Mechanical Diode®" (MD) was developed by Epilogics, Inc. in 1991 and was first introduced to torque converter rebuilders by Sonnax in 1997. The MD overrunning clutch, or freewheel, offers much greater strength than existing roller-ramps and sprags.
Torque converter clutch material is engineered by the OEMs to operate in conjunction with vehicle computer programming. To meet the varied needs of the aftermarket, Sonnax strives to offer a full line of friction products in a wide variety of sizes and materials. Rebuilders should choose the product that best matches their specific vehicle requirements.
Enter a Sonnax part number below to view its instructions. For general reaming instructions, click here.
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Impeller Side
Fits converters marked "21D".
Requires radial lip seal CH-O-13V.
For use with 27-spline stator support shafts.
Fits '13–'18 Duratec 2.5L & 3.0L, Ecoboost 1.5/1.6/2.0L.
Bushing-style
16 required.
Ball bearing-style
Stator employs 18 flat blades at a 35° angle.
Stator employs 18 flat blades at a 35° angle.
For diesel and towing applications.
Fits '17-later.
Fits '17-later.
Fits '17-later.
Late-style, '17-later.
Fits '17–later.
Late, 1.6L engine
Fits late-style units
For use in units with spring and roller one-way clutch.
For street/strip and towing applications.
Early-style
Late-style
Fits late-style units.
GM Only (Non-BMW)
Also fits 65RFE units.
Fits late-style units.
Fits stators with 3.25" bores.
Late Style
Fits late-style 230mm units.
Fits late-style 230mm units.
Chamfered Nose
Stepped, Chamfered Nose
For use with bushing style impeller hubs only.
Also fits Saturn VUE.
Use of this mechanical diode requires a 3.25" bore stator such as the Opel or Sonnax GM-ST-082 or GM-ST-086.
This unit requires the use of Sonnax Smart-Tech® big input shaft kit 22121B-08K.
This unit requires the use of Sonnax Smart-Tech® big input shaft kit 22121B-08K.
For use in TMBX converters only.
Early Style
Late Style
Street/Strip applications only.
Street/Strip applications only.
Street/Strip applications only. For use with GM 258mm early-style stators only.
Street/Strip applications only. For use with GM 258mm early-style stators only.
For use in units with high-stall stators and stator caps with four oil grooves.
Street/Strip applications only. For use with GM 258mm early-style stators only.
Street/Strip applications only. For use with GM 258mm early-style stators only.
Three required
Street/Strip applications only.
For use in units with low-stall stators and stator caps with eight oil grooves.
Use with GM-N-8HLT bearing adapter FD-WA-4 or FD-WA-7 (impeller-side only).
Requires a furnace-brazed, low stall 5R110W, 6-stud core.
For use in units with high-stall stators and stator caps with four oil grooves.
Street/Strip applications only.
Street/Strip applications only. For use with GM 258mm early-style stators only.
Street/Strip applications only.
Street/Strip applications only. For use with GM 258mm early-style stators only.
Also fits Saturn VUE.
Use of this mechanical diode requires a 3.25" bore stator like the Opel or Sonnax GM-ST-082 or GM-ST-086.
Fits '16-earlier.
Street/Strip applications only. For use with GM 258mm early-style stators only.
Street/Strip applications only.
Front cover to turbine hub
Street/Strip applications only.
Street/Strip applications only. For use with GM 258mm early-style stators only.
For use with performance converter kit AL-RK-2A.
Fits 2014 mid-year and later applications.
Turbine-side. Fits units with sprag clutch. For applications utilizing a spring and roller clutch, see GM-WA-49.
Turbine-side. Fits units with springs and roller clutch.
Fits two-piece turbine hub version only.
Two required
Two required
6.2L (4-Stud)
Fits '10–'12.
Converts Opel 8" to Powerglide
Converts GM 245mm LU (3T40, 3L30, TH200C, 4T60-E, 4L60 & E:S-10 only) converter cores to a 36-tooth spline for use in 6L80, 6L90 300mm applications
260mm, 280mm (Late)
For 6L90, Captive Clutch converters
Converts GM 6L80, 6L90 (300mm), GM 258mm LU (4L60-E, 5L40-E) or GM 265mm LU (4T60-E, 4T80-E) converter cores to a 37-tooth internal spline for use in GM 4L80-E single stator applications.
MT(B) 640, 643, 650, 653
Late
Late
'07-'09
Chrysler 10-3/4"
BTR 93LE, Ford Falcon
Chrysler 10-3/4
Use with 1/4" motorplate.
Use with 1/2" motorplate.
BW 310mm LU (A618) and Allison AT 540/545 units require modifications for proper fit. See instructions for details.
Adapts late-model impeller side bearing AL-N-1 to earlier applications
For use with performance converter kits AL-RK-1 and AL-RK-2.
For use with performance converter kits AL-RK-1 and AL-RK-2 in '08-later units.
Converts early style 5R110W 6-stud converters for use in late style 8-stud applications
For 3.9L & 5.2L Chrysler 10-3/4" LU applications. Can be used for 5.9L (Early ‘92–‘95) applications when used with balance weight CH-WT-103.
Used to convert the 8" Opel converter for use with the Chrysler 727.
GM to Ford conversion stator race
For Chrysler A618 lock-up applications with the gas V-10 magnum engine
Adapts thrust washer CH-WB-2 for use in Chrysler 9-1/2" and 10" converters
Borg Warner 310mm LU (Chrysler A618, 47RE & 48RE)
Adapts Jatco (Nissan) RE4R01A cores to GM applications
Late LuK units
Does not fit stock applications, for use only with GM-RK-13 when using late, front-wheel drive GM 245mm cores.
Adapts front-wheel drive GM 245mm cores to GM 298mm applications with 30-tooth input splines.
Four notches
‘96-97 Accord L4, ‘98 Odyssey, ‘98-99 Prelude, ’01 Civic, B7TA, B7VA, B7YA (HO-21, HO80), F4 (HO-7, HO61)
Four notches
“086” GM 245mm blade profile
“082” GM 245mm blade profile
Chrysler 10-3/4" (LU & NLU) TF6/904, A500
Not for street use.
Use with no motorplate.
For use with 10" performance converter (mounting ring).
Use with 1/8" motorplate.
GM 4L60-E (280mm) “VJCX”
4L60-E (280mm) “VJCX” torque converter
Conversion for BW 310mm LU (A618), GM TH400 (3L80), AT-540 & Buick TH350.
Adapts the Ford C5, C6, AOD and E4OD turbine to the 4R100 multiplate clutch assembly.
Used for OE front cover hub repair only
Mitsubishi KM 175, 176, 177 Colt, Excel, Hyundai
Jatco JF404E, FWD, 4-Speed Volkswagen Polo, Lupo, Arozsa, Fabio, Subaru TR690, TR580
'06-Later
Allison® 1000, 2000, 2400, Early & Late (2006-Later) Style Units
Honda L-15, L-16, S-16
Opel, neutral blade angle, furnace brazed.
Can be used as a conversion in early style 245mm converters
Industrial Mitsubishi & Yale
Fits stators with 3.25" bores and Ford FMX 29-tooth stator tube splines.
Chrysler 10-3/4" LU, Late Production (A518)
Use of this mechanical diode requires a 3.25" bore stator like the Opel or Sonnax GM-ST-082 or GM-ST-086.
Adapt the AXOD impeller for use with the A4LD
GM 245mm LU Euro (5L40-E), Transtar BMW41, Dacco B-24-5581
Adapts front-wheel drive GM 245mm front cover to GM 298mm applications.
Adapts late-model impeller side bearing AL-N-1 to earlier applications
Adapts late-model turbine side bearing AL-N-2 to earlier applications
Adapts front-wheel drive GM 245mm core to GM 298mm applications with 27-tooth input splines.
Use with Chrysler & GM 1.875" dia. impeller hubs
Used with GM-N-22.
Use of this mechanical diode requires a 3.25" bore stator like the Opel or Sonnax GM-ST-082 or GM-ST-086.
Use of this mechanical diode requires a 3.25" bore stator like the Opel or Sonnax GM-ST-082 or GM-ST-086.
Fits stators with 3.25" bores and Ford 32-tooth stator tube splines.
Conversion for Chrysler BW 310mm LU (A618), GM TH400 (3L80), AT-540 & Buick TH350.
Also fits Honda M3WC (CVT).
Adapts GM 245mm and 298mm converters for use with Chrysler 904 transmissions.