Sonnax rebuilt valve body GM171 is no longer in production. Please check with your distributor for availability. For service inquiries, please see details on Sonnax’s Limited Lifetime Warranty on remanufactured valve bodies.

4T65-E

Channel Plate
Part No. GM171

'97-'02, GM-Style, One Blow-Off Ball, Channel Plate Casting #24211900

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  • 4T65-E Channel Plate GM171
  • 4T65-E Channel Plate GM171 details