PMO 40mm Carburetor Kit | Porsche 911 2.8–3.0L Air-Cooled | Billet Triple-Barrel, Street Tune (PM-O803-0)

PMO 40mm Carburetor Kit — Porsche 911 2.8–3.0L, Billet Triple-Barrel (Street)

The billet induction the air-cooled 911 crowd actually trusts. The PMO 40mm Carburetor Kit (PM-O803-0) is a matched pair of aerospace-grade billet carburetors — three barrels per carb, one throat per cylinder — jetted for a 2.8–3.0L flat-six in a street tune. Think of it as Weber 2.0: the proven IDA-style architecture, rebuilt in solid billet with far fewer plugs, gaskets, and leak points, so idle is steadier, throttle response is instant, and tuning stays put.

Vehicle Fitment

• Porsche 911 (air-cooled flat-six): 2.8–3.0L displacement, typical of 1976–1983 cars and any engine built to that spec
• Best for: Replacing tired Weber/Solex carburetors or deleting CIS (K-Jetronic) or MFI
• Note: Fitment is driven by your engine's displacement, cam, and compression — not just model year. Match the kit to your actual build.

Why Choose PMO?

• Billet, not cast: machined from solid aluminum with a superior throttle-shaft and fuel-circuit design — the leaks and flat spots that plague old Weber IDAs and Solexes are engineered out.
• Simpler than CIS or MFI: a clean, mechanical carb setup that ends CIS fuel-distributor headaches and hard-to-service mechanical injection, while keeping that period-correct velocity-stack look.
• Matched to your motor: 40mm throttle bore with the venturi and jetting sized for a 2.8–3.0L engine in street spec — not a generic off-the-shelf carb.
• Smooth where it counts: crisp part-throttle, even fueling across all six cylinders, and a tune that holds so you can drive it, not chase it.

What's in the Kit

• Matched pair of PMO billet carburetors (three barrels each)
• Ported intake manifold set and insulator flanges
• Crossbar throttle linkage
• Fuel line, fuel filter, and install hardware
• Air-cleaner options (standard, or short-body for A/C cars) configured to your build

Made to Order — Jetted to Your Engine

Every PMO set is built and jetted to a PMO Carb Setup Sheet: displacement, cam, compression, and even your elevation. That's why they run right out of the box instead of needing weeks of fiddling — and why these are a build-to-order item, not off-the-shelf. We'll walk you through the setup sheet when you order.

Technical Specifications

• Part Number: PM-O803-0
• Throttle Bore: 40mm
• Tune: Street spec for 2.8–3.0L flat-six
• Configuration: Pair of billet triple-barrel (IDA-style) carburetors
• UPC: 707924554137

Frequently Asked Questions

• How is a PMO different from Weber IDA carbs? PMO carbs use the proven IDA-style architecture rebuilt from solid billet aluminum, with a superior throttle-shaft and fuel-circuit design and far fewer leak points — so idle is steadier and the tune holds.
• What engine does this kit fit? Air-cooled Porsche 911 flat-six engines of 2.8–3.0L displacement (typical of 1976–1983 cars, and any engine built to that spec). Fitment is driven by displacement, cam, and compression.
• Why is it built to order? Every set is jetted to a PMO Carb Setup Sheet — displacement, cam, compression, and elevation — so it runs right out of the box. We'll walk you through the setup sheet when you order.

Explore Related Categories

Fuel & Intake · Engine · Porsche 911

⚠ WARNING (California Proposition 65): This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov. Parts are legal for use on pre-pollution-controlled vehicles only.