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47872754

fits Ford 4R70W 4R75 2001up 12 Accumulator Piston Springs HD Sonnax 7694810K

by SONNAX
SKU S76741-3EK
$29.22 - $29.22
$29.22
$29.22 - $29.22
$29.22
Availability:
in stock, ready to be shipped

Delivery time

You will receive your package in 2–5 business days within the contiguous U.S.

4R70E, 4R70W, 4R75E, 4R75W Transmission

Heavy Duty 1-2 Accumulator Spring Kit
Part No. 76948-10K

Fits '2001-later units ONLY

In Ford 4R70E, 4R70W, 4R75E and 4R75W transmissions used for heavy-duty or towing applications, soft shifts and 1-2 slips are common. This happens when the OE 1-2 accumulator springs weaken, break, or are not calibrated to withstand the demands of heavy-duty use.

Installing Sonnax heavy duty 1-2 accumulator spring kit 76948-10K restores shift feel and improves overall performance, reliability and longevity of 4R70W series transmissions.

  • Specially designed inboard and outboard accumulator springs provide a firmer and more responsive 1-2 upshift, ensuring optimal performance even under heavy loads
  • Stronger-than-OE springs enhance transmission durability and reliability.

Provides firmer shifts in heavy duty/towing applications. Only use the two springs included in this kit. Some OE applications have a blue inner spring that is NOT used with this kit.


  • Inboard Spring Green
  • Outboard Spring Yellow
Direct Replacements for Ford nos. 1L3Z-7F284-AA & 1W7Z-7F284-AA

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