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In-Store Pickup Location

Sonnax Hydraulic Line Pressure Booster Kits 400-LB1

Line Pressure Booster Kit, Hydraulic, Valve, Sleeve, Pressure Regulator Spring, O-rings, GM, TH400, Kit

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Brand: Sonnax Industries

Manufacturer's Part Number: 400-LB1

Part Type: Automatic Transmission Boost Valves

Product Line: Sonnax Hydraulic Line Pressure Booster Kits

Summit Racing Part Number: SOX-400-LB1

Transmission Valve Type: TV boost valve

Quantity: Sold as a kit.

Notes: Includes valve, sleeve, pressure regulator spring and O-rings

In-Store Pickup: Choose In-store pick-up (OH, NV, GA, TX) on our web site.

Sonnax hydraulic line pressure booster kits contain stronger pressure regulator springs and large ratio boost valves designed to work together, providing progressive pressure increases as driving conditions become more demanding. Their springs are approximately 10 percent stronger than OEM and more conservative in impact than other aftermarket kit springs. Large ratio boost valves provide higher pressure incrementally and when it's needed the most. The combination of these springs and valves in the Sonnax hydraulic line pressure booster kits gives you the best of both worlds--a modest pressure increase at the low-end, with a high-end pressure that's equal to or greater than that of other aftermarket kit springs.

Most Helpful Reviews Review This Product

1 Customer Reviews for Sonnax Industries 400-LB1 - Sonnax Hydraulic Line Pressure Booster Kits

Average Customer Review

5 Star


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1 Star


+See All 1 Reviews

performs well

Summit RacingSummit Racing Verified Purchase

easy to install great addition to any th400 build

0 of 0 found this review helpful.

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Reviewer: from OK

Date: December 31, 2015

Ease of Installation
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Some parts are not legal for use in California or other states with similar laws / regulations

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