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  • Burnt clutches
  • Burnt bands
  • Forward slip
  • Delayed engagement


Wear at the cast aluminum accumulator bores by the steel pistons allows apply oil to exhaust.


The Sonnax accumulator piston incorporates an O-ring for positive sealing and annular grooves for better centering and wear prevention.

09D, 09G, 09K, 09M, 6F21WA, TF-60SN, TF-80SC, TF-81SC, TR-60SN

Accumulator Piston Kit
Part No. 15741-14K

Fits multiple locations.

You need this if... View Instructions

Wear at the multiple accumulator bores in listed units is very common. At the clutch and band locations, wear allows component apply oil to exhaust, resulting in delayed engagements, slipping shifts, and burnt clutches and bands. Wear at the line pressure accumulator allows throttle signal oil leakage, which can result in reduced line pressure. Sonnax accumulator piston kit 15741-14K incorporates an O-ring for positive sealing and annular grooves for better centering and wear prevention.This kit fits in several locations throughout the valve bodies as shown.

  • Piston
  • O-Ring

Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.

Aisin AW TF-80SC Valve Body Layout

Tf 80sc vbl thumb

Aisin AW TF-81SC Valve Body Layout

Tf 81sc vbl thumb

Aisin AW TR-60SN Valve Body Layout

Tr 60sn vbl thumb

Aisin AW TF-60SN Valve Body Layout

Tf 60sn vbl thumb

October 16, 2014

Aisin AW TF-60SN, BMW 6F21WA, VW/Audi 09G, 09K, 09M Vacuum Test Guide

Topics: Vacuum Test Guides Vacuum Testing Transmission BMW VW/Audi Aisin AW 6F21WA Transmission 09G, 09K, 09M Transmission TF-60SN Transmission

Read Now
  • 15741 14k combo2
  • 15741 14k combo3
  • 15741 14k combo4
  • 15741 14k combo1
  • 15741 14k

You need this if...

Visual inspection of the bore often shows shiny patches of wear. If wear is visible, perform a wet air or vacuum test in the necessary locations as shown. Vacuum test must hold a minimum of 18".

  • 15741 14k  1