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Buna-N O-ring to seal the pilot air/fuel screw to the carburetor body
Part number: 1329529900-BUNA
Price: $0.50

Photo courtesy of Gregory Bender.
Buna-N O-ring to seal the pilot air/fuel screw to the carburetor body
Quick reference code: OR-9
O-ring to seal the pilot air/fuel screw to the carburetor body (SPN# 13295-29900). Buna-N is less expensive than Viton material, but Buna-N does not hold up as well when in contact with modern fuels. One is required per carburetor. Fits 1994 - 2023 model years. One is required. Sold each.

Photo courtesy of Gregory Bender.