144740-43K Oversized Low Reverse/Overdrive (4-5-6) Clutch Regulator Valve Kit, 6F35 (Gen. 1)/6F35 (Gen. 2)/6F35 (Gen. 3)

Name: 144740-43K Oversized Low Reverse/Overdrive (4-5-6) Clutch Regulator Valve Kit, 6F35 (Gen. 1)/6F35 (Gen. 2)/6F35 (Gen. 3)
Brand: SONNAX
SKU: 852-144740-43K
Price: 40.28 USD
Availability: InStock

^$40²⁸

Ships on 09/16/2026

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6F35 (Gen. 1)/6F35 (Gen. 2)/6F35 (Gen. 3)
Tooling: F-144740-TL43
VB-FIX

Sonnax 144740-43K Features:
Wear can occur in Gen. 1, Gen. 2 and Gen. 3 Ford 6F35 clutch control valve bores. This wear allows critical clutch apply pressure and oil loss which can cause shifting issues and a burnt clutch. Reconditioning the bore and installing Sonnax oversized low reverse/overdrive (4-5-6) clutch regulator valve kit 144740-43K restores correct pressure regulation.
New spring matches OE calibration
Hardcoat anodized aluminum valve combats premature wear
Annular grooves help center valve in bore to reduce future side-load wear
O-Ringed end plug provides positive sealing

Contains:

Spring
Valve
End Plug
O-Rings (2) 1 Extra

Part TypeTransmission Rebuild Component

BrandSONNAX

Part CategoryPerformance Parts

Vendor Part Number144740-43K

Package Qty1

Package TypeEA

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144740-43K Oversized Low Reverse/Overdrive (4-5-6) Clutch Regulator Valve Kit, 6F35 (Gen. 1)/6F35 (Gen. 2)/6F35 (Gen. 3)

Sonnax 144740-43K Features:

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