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Product details
The PMO PM-O114-0 is the window O-ring that seals the fuel sight glass on PMO Induction carburetor float bowls, keeping fuel in while letting you read the fuel level from outside. PMO built the sight glass in so the level can be set accurately without disassembly or special tools, where the Weber IDA method requires partly taking the carb apart. An O-ring that has hardened, flattened, or cracked can let fuel seep around the window. Each PMO carburetor takes two.
PMO's 40mm, 46mm, and 50mm rebuild kits (PM-O700-0, PM-O700-1, and PM-O700-2) include four window O-rings, enough for a pair of carbs. PMO states the gaskets, diaphragms, and seals in its carburetors are E85 compatible. If a fuel level problem led you here, check the float needle too. PMO sells the needle alone (PM-O105-3) or complete with a 1.75 or 2.50 body, plus float shims for setting the level.
Technical Details
- Manufacturer: PMO
- Manufacturer part number: PM-O114-0
- Part: sight glass (window) O-ring
- Quantity: two per carburetor, four per PMO rebuild kit
- Priced: each
Fitment & Compatibility
Fits PMO Induction carburetors in 40mm, 46mm, and 50mm sizes, which PMO lists as compatible with flat-six Porsche engines from 1965–1998, including the 911 and 914-6. Weber IDA carburetors have no sight glass and do not use it.
Common Questions
How many window O-rings does each carb need?
Two per carburetor. PMO's rebuild kits include four, enough for a pair.
PMB Performance has kept PMO carbs running for years and can help with float level setup.
