As the valve bore wears at the inboard spool, line pressure escalates with increased temperature and the pressure regulator valve does not stroke, reducing converter charge. As line pressure goes up, servo covers and pistons have excess pressure in reverse. Delayed engagements occur as the converter feed is reduced with excess bore wear. Line pressure will be reduced as the circuit between line, converter and exhaust wear. The Sonnax kit 56947J-09K includes a wear-resistant aluminum sleeve that allows reuse of the OE pressure regulator valve.

Highly wear-resistant aluminum sleeve refurbishes hydraulic integrity.
The OE valve is reused as a cost-saving method.

More From This Category

Dart Cylinder Sleeve, Cast Iron, BBC 10.200 4.500 in. Bore, 6.770 in. Length, Each

Dart Cylinder Sleeve, Cast Iron, BBC 10.200 4.500 in. Bore, 6.770 in. Length, Each

$254.52

View
Dart Cylinder Sleeve, Cast Iron, 3.300 in. (84.5mm) Deck, 5.00 in. Length, Each

Dart Cylinder Sleeve, Cast Iron, 3.300 in. (84.5mm) Deck, 5.00 in. Length, Each

$135.88

View
Dart Cylinder Sleeve, Cast Iron, 9.325 in. Deck, 4.000 in. Bore, 5.925 in. Length, + .020, Each

Dart Cylinder Sleeve, Cast Iron, 9.325 in. Deck, 4.000 in. Bore, 5.925 in. Length, + .020, Each

$193.91

View
Dart Cylinder Sleeve, Cast Iron, For Honda 3.300 in. (84.5mm) Deck, 6.00 in. Length, +.010, Each

Dart Cylinder Sleeve, Cast Iron, For Honda 3.300 in. (84.5mm) Deck, 6.00 in. Length, +.010, Each

$155.30

View
Dart Cylinder Sleeve, Cast Iron, Ford 9.5 in. Deck, 4.000 in. Bore, 5.850 in. Length, +.020, Each

Dart Cylinder Sleeve, Cast Iron, Ford 9.5 in. Deck, 4.000 in. Bore, 5.850 in. Length, +.020, Each

$220.57

View
Dart Cylinder Sleeve, Cast Iron, SBC 9.325 in. Deck, 4.180 in Bore, 6.150 in. Length, +.030 4.5 BS, Each

Dart Cylinder Sleeve, Cast Iron, SBC 9.325 in. Deck, 4.180 in Bore, 6.150 in. Length, +.030 4.5 BS, Each

$217.01

View