Mercedes 722.9 transmissions often suffer shift abnormalities caused by excess wear in either or both of the supply pressure regulator valve bores. The supply pressure regulator controls the pressure supplied to solenoids, and functions similarly to solenoid pressure regulators found in Ford units. This wear allows fluid loss which prevents proper regulation of oil pressure supplied to control solenoids, resulting in harsh or soft shifts, solenoid codes, wrong gear starts, TCC apply issues, and clutch failure.
Reconditioning the bore(s) and installing Sonnax oversized supply pressure regulator valve 88740-02 restores hydraulic integrity to this circuit, restoring normal shift operation and feel in all ranges and the hardcoat anodized aluminum valve combats premature wear.

More From This Category

MANLEY Valve, Race Master, Intake, Bead Loc, 44.5mm Head Dia, 0.275 in. Stem Dia, 4.705 Length, For Ford, Each

MANLEY Valve, Race Master, Intake, Bead Loc, 44.5mm Head Dia, 0.275 in. Stem Dia, 4.705 Length, For Ford, Each

$51.07

MANLEY Valve, Titanium, Intake, Bead Loc, 2.25 in. Head Dia, 0.3415 in. Stem Dia, 5.35 in. Length, Each

MANLEY Valve, Titanium, Intake, Bead Loc, 2.25 in. Head Dia, 0.3415 in. Stem Dia, 5.35 in. Length, Each

$325.41

MILODON Valves, Exhaust, Race, Stainless Steel, 1.77 in. Dia, For Pontiac, 1968-70, 326, 350, 389, 400, 421, 455, Set of 8

MILODON Valves, Exhaust, Race, Stainless Steel, 1.77 in. Dia, For Pontiac, 1968-70, 326, 350, 389, 400, 421, 455, Set of 8

$475.89

AFR Exhaust Valve, Ferrea Titanium Valve, 1.880 + .100 w/Tip Race Exhaust, Set

AFR Exhaust Valve, Ferrea Titanium Valve, 1.880 + .100 w/Tip Race Exhaust, Set

$3,942.80

MANLEY Valve, Custom, Titanium, .3415 in. Stem Dia, Set of 8

MANLEY Valve, Custom, Titanium, .3415 in. Stem Dia, Set of 8

$2,804.20

MANLEY Valve, Race Flo, Intake, 2.08 in. Head Dia, 0.3125 in. Stem Dia, 5.176 in. Length, For Chrysler HEMI, Set of 8

MANLEY Valve, Race Flo, Intake, 2.08 in. Head Dia, 0.3125 in. Stem Dia, 5.176 in. Length, For Chrysler HEMI, Set of 8

$1,138.39