Pioneer FRA-159 Automatic Transmission Flexplate 168-Tooth External Balance 1-Piece Seal

The Pioneer FRA-159 is a high-quality OEM replacement automatic transmission flexplate engineered for small block Chevrolet and GM applications using a one-piece rear main seal crankshaft. Built from high-grade steel with an automated welding process, this flexplate is precision balanced to factory specifications to ensure smooth, reliable operation and long service life.

Key Features:

• 168-tooth ring gear with 14.13" overall outer diameter and 2" inner diameter
• External balance design — includes counterweight for externally balanced engines
• 1-piece rear main seal crankshaft compatible
• Dual torque converter bolt pattern — fits both 10-1/2" and 11-1/4" converter bolt circle spreads
• Transmission compatibility: GM 700R4, 4L60E, TH-350, TH-400, and Powerglide
• Constructed from high-grade steel with automated welding for exceptional strength and consistency
• Precision balanced to OEM factory specifications

OEM Cross-Reference Part Numbers: 14088761, 10128414

The Pioneer FRA-159 restores OEM-level transmission performance and is sold individually. It is a direct replacement part for a wide range of GM vehicles spanning from the mid-1980s through the early 2000s, covering Chevrolet, GMC, Buick, Cadillac, and Oldsmobile applications.