400 (3L80), AT-540, 68RFE, 68RFE Multi-Plate Performance Converter, A618, 47RH/RE, 48RE (310mm) Multi-Plate Performance Converter, BorgWarner 310mm LU (A618, 47RH/RE, 48RE), Buick 350

Conversion Spacer
Part No. GMBW-WS-40

Conversion for BW 310mm LU (A618), GM 400 (3L80), AT-540 & Buick 350


View Instructions

Sonnax conversion spacer GMBW-WS-40 and outer stator race GM-R-15 are used with the GM 300mm outer stator race, springs and rollers for a cost-effective upgrade to BW 310mm LU (A618), GM 400 (3L80), AT-540 and Buick 350 stator clutch assemblies. The upgrade repairs and improves the performance of OE stator cams with problematic roller clutch design.

  • Use with Sonnax outer stator race GM-R-15 for a cost-effective upgrade
  • Hardened for added durability
  • Material: Steel
  • Thickness: 0.039"
  • Inner Dia.: 2.350"
  • Outer Dia.: 3.600"

Where to Buy

  • Existing Customers: Contact your sales representative.
  • New Customers: Fill out the form and a sales representative will contact you.
  • 400 (3L80), AT-540, 68RFE, 68RFE Multi-Plate Performance Converter, A618, 47RH/RE, 48RE (310mm) Multi-Plate Performance Converter, BorgWarner 310mm LU (A618, 47RH/RE, 48RE), Buick 350 Conversion Spacer GMBW-WS-40