Tools

8L90 8L45 Converter Feed Limit Valve Vacuum Test Tool

The GM 8L45 and 8L90 converter feed limit valve has an inboard valve spool fed by a hole through the valve into a blind port in the casting. This design makes vacuum testing the inboard spool and casting by traditional methods impossible. The Sonnax...

8L90 8L45 Clutch Control Valve Vacuum Test Tool Kit

The GM 8L45 and 8L90 clutch control valves have an inboard valve spool fed by a hole through the valve into the casting. This design makes vacuum testing the inboard spool and casting by traditional methods impossible. Wear at the inboard valve spool...

8L90 8L45 Bore Sizing Tool (Use w/ 154740-13K)

Sonnax bore sizing tool 154740-BST13 smooths and deburrs clutch control valve bores and may be needed to ensure proper clearance and function of Sonnax S1/S5 clutch control valve kit 154740-13K.

8L90 8L45 Bore Sizing Tool (Use w/ 154740-11K)

Sonnax bore sizing tool 154740-BST11 smooths and deburrs clutch control valve bores and may be needed to ensure proper clearance and function of Sonnax S2/S3/S4/TCC clutch control valve kit 154740-11K.

8L90 Input Shaft Teflon Ring Resizer Kit | HD Stainless Steel | Adapt-A-Case

This is a set of heavy duty stainless steel resizer for the large and small Teflon seals on the 8L90 transmission's input shaft.  It is a four piece kit so you will be able to install all the rings on the shaft at once.