Aftermarket Torque Converter Bolts 7/16-20" UHL 0.750" Turbo 350 400 Powerglide

Aeroflow Performance Torque Converter Bolt Kit for Turbo 350/400 & Powerglide

Engineered for durable, secure converter mounting in high-torque transmissions, this Aeroflow Performance bolt kit is built to withstand the demands of Turbo 350, 400, and Powerglide builds. Crafted from aircraft-quality 8740 high-tensile chromoly steel and cold-forged to preserve molecular integrity, these fasteners deliver long-term reliability and resistance to fatigue. With a tensile rating up to 190,000 psi, they outperform typical Grade 8 OEM fasteners, giving you confidence whether you’re hitting the street or the strip.

Why this kit stands out

• Rigid, vibration-resistant interface between the torque converter and flexplate to help prevent costly bolt failure and transmission damage.
• 12-point head design paired with hardened washers for even load distribution and precise torque readings during installation.
• Designed specifically for Turbo 350, 400, and Powerglide installations with secure 7/16”-20 thread fasteners.

Technical details

• Bolt type: 12-point bolts, 7/16”-20 thread; Under Head Length 17.80 mm; Head Diameter 17.50 mm
• Nut type: 12-point nuts; Outside Diameter 18.85 mm; Overall Height 10.80 mm; Collar Height 3.20 mm
• Washer type: flat washers; Outside Diameter 17.15 mm; Inside Diameter 11.30 mm; Thickness 1.55 mm
• Pack contents: 3 bolts, 3 nuts, 3 flat washers

Installation guidance

For best results, apply Loctite 262 or a similar threadlocker and torque to your manufacturer’s specifications. This kit provides a robust, reliable interface that helps maintain secure torque converter mounting under demanding driving conditions.

What you get

• Complete mounting kit with three 12-point bolts (7/16”-20)
• Three corresponding 12-point nuts
• Three flat washers