Sonnax 77754TL AFL Valve Reamer and Jig Tool Kit for GM 4L60E 4L65E 4L70E 4L80E 4L85E Transmissions

The Sonnax 77754TL is a professional-grade reamer and jig tool kit designed specifically for installing Sonnax actuator feed limit (AFL) valve kits in GM 4L60-E, 4L65-E, 4L70-E, 4L80-E, and 4L85-E automatic transmissions. This essential tool kit is required when installing Sonnax AFL valve kits 77754-09K and 34200-16K, as well as the SC-4L60E and SC-4L80E Sure-Cure kits.

What's Included:

• Reamer for oversizing the AFL valve bore
• Core drill bit (for 4L80-E and 4L85-E applications)
• Reamer jig for 4L60-E, 4L65-E, and 4L70-E transmissions
• Drill guide for 4L80-E and 4L85-E transmissions
• Reamer jig for 4L80-E and 4L85-E transmissions

Application and Function:

This tool kit enables transmission rebuilders to properly oversize the AFL valve bore in the valve body to accept Sonnax's redesigned AFL valve sleeve and valve assembly. The AFL valve regulates pressure to the EPC solenoid and shift solenoids, and bore wear in this area commonly causes low shift solenoid pressure, solenoid codes, ratio codes, and reduced line pressure. The precision-machined drill jigs ensure accurate alignment and proper sizing when preparing the valve body for the upgraded Sonnax AFL valve components.

Professional Tool Quality:

Constructed from high-quality steel, this tool kit provides the precision and durability required for professional transmission rebuilding work. The included drill guides and jigs ensure proper bore preparation for a secure, leak-free installation of the AFL valve sleeve.

Note: This is a tool kit only and does not include AFL valves or sleeves. Compatible AFL valve kits (77754-09K for 4L60-E series or 34200-16K for 4L80-E series) must be purchased separately.