Wehrli · New
Wehrli S400 Compressor Outlet O-Ring Seal
MPN WCF203-21 · Store SKU wcfWCF203-21
Supplier stock checked 11/7/2026, 9:03:37 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
Replacement O-Ring for S400 Compressor outlet flanges. Used with the following WCFab products: LB7 Duramax S400 Single Turbo Install Kit (WCF100489), 2004.5-2007 5.9L Cummins S400 High Mount 2nd Gen Swap Kit (WCF100486), 2003-2007 5.9L Cummins S400/Stock Twin Turbo Kit (WCF100567), 2003-2007 5.9L Cummins S400/S400 Side by Side Compound (Twin) Turbo Kit (WCF100580) Wehrli Custom Fab O-Ring Seal, S400 COMPRESSOR OUTLET O-Ring Seal, S400 COMPRESSOR OUTLET
Manufacturer fitment & guides
Check WCF203-21 against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
Part-specific notes
- California Proposition 65: Y