Powerglide High Volume Pump (Ring Type). Provides SUPERIOR transbrake operation at low RPM. Billet aluminum pump body and stator back. 20% lighter than the stock pump (11.5 lbs versus 14.4 lbs). Positive stop bushing area – prevents the bushing from moving forward. Area for staking bushing – prevents bushing spin. Snap ring to prevent seal blow-out. Lube reliefs on outer gear pockets provide superior lubrication. Steel stator shaft made from 4140 HTSR billetsteel – This shaft will NEVER spin-out as often happens with press-in designs! ALL pump bodies will interchange with stock support. NOTE: The Super Pump is also available for the ringless PG input shaft.. Part# 749603 ringless Super Pump Part# 743400PR.