No one knows transmissions & torque converters like

Sonnax

No one knows transmissions & torque converters like 2008-sonnax-logo-white

Ts robothead 18in high trans rgb

Nobody knows transmissions like Sonnax.

Sonnax transmission products are the number one choice of large transmission remanufacturers, quality valve body rebuilders, and veteran independent specialists around the world. Our innovative parts are designed to address the root cause of automatic transmission problems, allowing rebuilders to salvage valve bodies with highly effective repairs.

Which Sonnax Kit is Right for Your Rebuild?

Line Pressure Booster Kit Line Pressure Booster Kits

Affordable kit for big performance without a big price tag.

  • Affordable kit with no special tools or reaming required
  • Slightly stronger springs for a modest base line pressure increase
  • Larger boost valves for demand-based line rise without low-speed harshness
3d zip kit-box_2010-right-trans Zip Kits®

The first step in correcting common shift problems.

  • Installs quickly & easily without any special tools
  • Stops leaks so the valve body works the way it's supposed to
  • In-depth tech booklet for installation, plus diagnostics & repair
Line Pressure Booster Kit The Sure Cure®

Comprehensive kit for big problems you don't want back.

  • Restores OE shift quality
  • Repairs biggest trouble areas to reduce comebacks
  • Step-by-step instructions for comprehenseive valve/pump body restoration
Performance pack box 3-d right flat trans Performance Packs

The best parts for performance & heavy duty recalibration

  • Firmer shifts under load without low-speed harshness
  • Consistent recalibration results with tuning options
  • Improved durability
  • No special tools required
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New Parts

Zip Kit® Zip Kit®
AW55-50SN-ZIP

Sonnax Zip Kit AW55-50SN-ZIP targets the root cause of multiple complaints by sealing the critical circuit pressure losses in Aisin AW 55-50SN valve bodies. The kit contains uniquely designed pa...

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Boost Valve Kit Boost Valve Kit
39741-44K

In Aisin AW TF-80SC, TF-81SC transmissions, the boost sleeve wears from repeated oscillation of the boost valve, allowing Reverse pressure to exhaust. This can result in delayed Reverse, low lin...

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Secondary Pressure Regulator Boost Valve Kit Secondary Pressure Regulator Boost Valve Kit
25741-36K

Converter-related issues common in Aisin AW TR-60SN (VW/Audi 09D) transmissions are often caused by wear at the secondary pressure regulator valve boost assembly. The boost valve continually osc...

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Lockup Clutch Control Plunger Valve Kit Lockup Clutch Control Plunger Valve Kit
15741-53K

Converter related complaints are common in the Aisin AW TF-80/81SC and TF-60SN transmissions. Many times these complaints can be caused by wear at the plunger sleeve in the lockup clutch control...

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Boost Valve Kit Boost Valve Kit
15741-51K

The boost sleeve in Aisin AW TF-60SN units wears from repeated oscillation of the boost valve, allowing Reverse pressure to exhaust. This will result in delayed Reverse, low line pressure in Rev...

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Lockup Clutch Control Plunger Valve Kit Lockup Clutch Control Plunger Valve Kit
25741-34K

Converter related complaints are common in VW/Audi 09D, Aisin AW TR-60SN transmissions. Many times these complaints can be caused by wear at the plunger sleeve in the lockup clutch control valve...

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Driven Pulley Bearing Driven Pulley Bearing
33241J

Sonnax driven pulley bearing 33241J is an OE equivalent replacement for damaged or worn driven pulley bearings in Saturn VT25-E units.

  • Thickness: 0.707"
  • Inner Dia.: 1.574"
  • Outer Dia.: 3.150"
  • Bearing Style: Ball bearing
Tool Kit Tool Kit
F-47740-TL35

Tool kit for 47740-35K

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