Pressure reg. sleeve, 6HP21/28/34

Pressure reg. sleeve, 6HP21/28/34 The Sonnax direct replacement pressure regulator sleeve addresses sleeve wear and circuit integrity of line pressure balance in the pressure regulator circuit. Sleeve is highly wear-resistant to increase life Direct replacement, no special tools required NOTE: Kit is NOT compatible with ZF6HP19/26/32 (Gen.1) units. To differentiate between Gen. 1 and Gen. 2 valve bodies, see ZF Identification Guide.