Printpartsummary
Symptoms:
  • 2nd Clutch distress
  • 3rd Clutch distress
  • Low line rise
  • Low Reverse boost
  • Soft shifts
Cause:

Worn and leaking boost sleeves

Correction:

These replacement boost valve kits provide more sealing area. Sleeves and valves made from high-quality hardened steel to prevent excessive wear.

4T60, 4T60-E

Reverse & Modulated Line Boost Valve Kit

Part No.

84754-24K

Reverse & Modulated Line Boost Valve Kit
  • 84754-24k_combo

  • Reverse & Modulated Line Boost Valve Kit

Small_84754-24k_combo Small_84754-24k

4T60, 4T60-E

Reverse & Modulated Line Boost Valve Kit

Part No. 84754-24K

  • Modulated Line Boost Valve
  • Modulated Line Boost Sleeve
  • Modulated Line Boost Spring
  • Reverse Boost Valve
  • Reverse Boost Sleeve
  • Reverse Boost Spring

Low ratio

Complaint:

  • 2nd Clutch distress
  • 3rd Clutch distress
  • Low line rise
  • Low Reverse boost
  • Soft shifts

Cause:

Worn and leaking boost sleeves


Correction:

These replacement boost valve kits provide more sealing area. Sleeves and valves made from high-quality hardened steel to prevent excessive wear.

Vehicles with 4T60 or 4T60-E transmissions often exhibit such problems as poor line rise, soft shifts, poor reverse boost, and/or 2nd and 3rd clutch distress. These problems can often be caused by worn and leaking boost sleeves. The OE boost valve spools have very narrow contact surfaces within the sleeves, which contribute to the leakage.

  • Sleeves and valves are made from high-quality, hardened steel to resist wear.
  • Valve spools have been lengthened considerably to provide more sealing area with the sleeves.
  • Kit includes replacement springs to provide proper calibration for the lengthened valve spools.
  • Kit allows replacement of all items together

Related Parts

Click here to view PDF if instructions do not appear below.

It appears you don't have a PDF plugin for this browser. Click here to view the PDF file.

Contact a Sonnax Distributor to purchase this part.