The heavy linear force solenoids (LFS) in listed GM and Ford 10-speed transmissions are held in place by small spring retainers that are prone to collapse. When the retainers collapse, the solenoid wobbles in the bore, causing damage to the casting at the clutch valve bore opening. These LFSs actuate by extending a small pintle about .090" to stroke the inboard clutch control valve. When the spring retainer collapses and the LFS is off-center, the pintle cannot stroke the clutch control valve appropriately, resulting in shift complaints and converter issues. Valve body damage can also occur if the LFSs remain loose, resulting in valve damage during rebuild.
Sonnax solenoid stabilization retainer 105740-19K replaces OE clips and provides 32% more surface area to create more support for the solenoid. Another design upgrade is the top of the clip is rolled over to create a positive stop for the flexible side to land against, furthering the prevention of retainer collapse.

32% More casting-to-solenoid surface area for better support and leverage
Positive stop retainer feature to prevent collapse
Drop-in Zip Valve™ parts install quickly and easily

Learn More About Zip Valve™ Drop-In Repairs

More From This Category

Cast Piston

Cast Piston

$100.64

KB Piston, 4 in. Bore, For Ford 302 Rod 5.090 Hollow Dome -14.7cc 2V, .060 Oversized, w/ Rings, Each

KB Piston, 4 in. Bore, For Ford 302 Rod 5.090 Hollow Dome -14.7cc 2V, .060 Oversized, w/ Rings, Each

$1,150.95

Motive Gear Differential Bearing Kit, Koyo, For AM GENERAL HUMMER 1992–2001, Kit

Motive Gear Differential Bearing Kit, Koyo, For AM GENERAL HUMMER 1992–2001, Kit

$256.79

Motive Gear Nv4500 M/S Chev P-Series (Bolt, Each

Motive Gear Nv4500 M/S Chev P-Series (Bolt, Each

$404.23

TURBOSMART Boost Reference Adapter, For VW Golf GTI Mk5/6, Black, Each

TURBOSMART Boost Reference Adapter, For VW Golf GTI Mk5/6, Black, Each

$61.67

Wilwood Caliper, AERO4-DS, Radial, 0.81 in. Rotor Width, 15.00 in. Rotor Dia, 1.12/1.12 in. Bore, Universal, Alum, Black, Each

Wilwood Caliper, AERO4-DS, Radial, 0.81 in. Rotor Width, 15.00 in. Rotor Dia, 1.12/1.12 in. Bore, Universal, Alum, Black, Each

$871.85