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245mm LU (3T40, 3L30, 200C, 4T60-E, 4L60 & E:S-10 only), 4L60-E (300mm) Performance Converter (Mounting Ring), 4L60/E (298mm) Performance Converter (Mounting Ring), 4L80-E, Single Plate Performance Converter, AODE, 4R70W Performance Converter

Friction Ring
Part No. S20320WC

Package Quantity: 5

  • Material: WC
  • Outer Dia.: 9.000"
  • Inner Dia.: 7.750"
  • Thickness: 0.020"

April 24, 2010

Rebuilding the New GM Captive Clutch Without Fear

Ed Lee

Topics: Torque Converter GM 245mm LU (3T40, 3L30, 200C, 4T60-E, 4L60 & E:S-10 only) Torque Converter

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May 24, 2011

Woven Carbon Wear Characteristics

Lowell Caltrell

Topics: Shop Practices Torque Converter

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July 28, 2006

Rebuilders Rally to Crack the Code: Converter Identification

Ed Lee

Topics: Diagnostics And Theory Torque Converter Ford GM 400 (3L80), AT-540 Torque Converter AODE, 4R70W, 4R75W Torque Converter AOD (FIOD) Torque Converter C4, C6, FMX 12", C4 11-1/4" Torque Converter 298mm LU (250C, 350C, 200-4R, 4L60 & E) Torque Converter

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December 27, 2007

Identifying those GM 300mm Dampers

Ed Lee

Topics: Torque Converter GM 280mm LU (4L60-E) “VJCX” Torque Converter 300mm (4L60-E) Torque Converter

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January 06, 2016

A Slippery Slope - The What (and Why) of Woven Carbon

Topics: Diagnostics And Theory Torque Converter

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January 05, 2016

Torque Converter Journal: A Slippery Slope - The What (and Why) of Woven Carbon

Topics: Torque Converter Journals Torque Converter ZF Allison 1000/2000/2400, 2006-Later Performance Converter Torque Converter ZF8HP55 Torque Converter ZF8HP45 Torque Converter

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  • Existing Customers: Contact your sales representative.
  • New Customers: Fill out the form and a sales representative will contact you.
  • S20250wc

Bonding Pressure Calculator

Enter the details of your bonder's ram/piston and the friction ring you are bonding into the calculator here to find the piston pressure required to create the desired pressure at the ring.

Submit
Pressurediagram

Piston Pressure Required:

Minimum Pressure:

Maximum Pressure:


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.

Materials Designed for Slip Converters

  • HTS - Designed for high-thermal capacity applications. Replaces spun-wound, woven or other carbon-based materials.
  • WC - Genuine OE woven carbon material developed by OEMs for continuous slip GM and Ford applications.

Materials Designed for Full Lockup Converters

  • HTE - Thermal capacity of Kevlar®, with improved consistency and shudder resistance.
  • HTL - High thermal and exceptional torque capacity for the most demanding torque-holding applications.
  • XTL - 30% More torque holding capacity than HTL. Available only for a small range of extreme-duty lockup applications.
Learn more about Friction Rings