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Sonnax 4R70W-LB1

Line Pressure Booster Kit AODE, 4R70W, 4R75W

Sonnax 4R70W-LB1

852-4R70W-LB1

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Estimated ship date 08/25/17 if Ordered Today
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Sonnax 4R70W-LB1 Line Pressure Booster Kit AODE, 4R70W, 4R75W $65.00
Line Pressure Booster Kit
  • AODE, 4R70W, 4R75W

  • Sonnax 4R70W-LB1 Details

    Ford

    • Valve
    • Sleeve
    • Pressure Regulator Spring
    Line rise control in the AODE/4R70W is different than in most units. Forward pressure is controlled by EPC oil reacting directly on the spring end of the PR valve. The OE boost assembly only increases pressure in reverse. Traditional use of a larger ratio boost valve to increase line pressure has not been an option for this unit. Sonnax has created a specially designed boost assembly that introduces a supplemental boost valve to augment line rise in forward ranges. Like other Sonnax line pressure booster kits, this special boost valve adds EPC reaction area, providing higher pressure incrementally and when it is needed the most. Combined with a spring that is approximately 10% stronger than OE and more conservative in impact than other aftermarket kit springs, this unique Sonnax booster kit gives you the best of both worlds: a modest pressure increase at the low end, with a high-end pressure that is equal to or greater than that of other aftermarket kit springs.

    • Achieve shorter shifts and increased torque capacity without creating low-speed harshness
    • Improved band and clutch holding capacity for increased durability
    • Progressive pressure increase as driving conditions become more demanding
    • All the benefits of increased line pressure without overloading the pump at idle
    • Simple and affordable drop-in solution with no special tools or reaming required.

    Specifications:

    Manufacturer's Part Number:
    4R70W-LB1

    Affordable Kit for Big Performance without a Big Price Tag

    The larger boost valves and stronger PR springs in Sonnax booster kits raise line pressure the SMART way by controlling pressure increase progressively with the demand of driving conditions.

  • Simple, affordable parts require no special tools or reaming to install.
  • Slightly stronger springs provide a modest base line pressure increase. Unlike other, stronger aftermarket springs, Sonnax springs won't overload the pump at idle.
  • Larger boost valves deliver demand-based line rise without low-speed harshness. How Progressive Boost Works:

    The combination of Sonnax booster kit valves and springs gives you the best of both worlds: a modest pressure increase at the low end, with a high-end pressure that is equal to or greater than that of other aftermarket kit springs.

    The combination of boost valves and springs is the ONLY way to progressively increase line pressure.

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