DeatschWerks · New
DeatschWerks Replacement O-Rings for 5/16in Female EFI Fittings (6-02-0121 / 6-02-0143)
MPN 6-02-0311 · Store SKU dwk6-02-0311
Supplier stock checked 11/7/2026, 10:28:21 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-Rings for 5/16 Inch Female EFI Fittings (6-02-0121, 6-02-0143)
Manufacturer fitment & guides
Check 6-02-0311 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y