PMO Carburetor Jet Set — 50mm Tuning Assortment | Air-Cooled Porsche 911 / 930 (PM-O854-0)

A 50mm PMO setup is the big end of the air-cooled induction range, and it is the least forgiving of a lazy baseline tune. The PMO 50mm Carburetor Jet Set (PM-O854-0) puts the full tuning assortment on your bench so you can dial the fuelling to your engine build rather than hoping the shipped jetting is close enough.

Features

• Jet assortment for tuning 50mm PMO carburetors — test and re-test without waiting on parts orders.
• Lets you correct for altitude, fuel quality, camshaft profile, and exhaust changes.
• Specific to the 50mm PMO carburetor family.
• Essential kit if you are commissioning a fresh big-bore engine.

Fitment

Confirmed: 50mm PMO carburetors fitted to air-cooled Porsche 911 and 930 engines.

Match the set to your carburetors: 40mm carbs use PM-O850-0, 46mm carbs use PM-O852-0. Jets are bore-specific.

Specifications

• Part number: PM-O854-0
• Application: 50mm PMO carburetors
• UPC: 707924557909
• Country of origin: United States
• Shipping weight: 0.11 lb
• Boxed dimensions: 5 x 4 x 2 in

Questions & Answers

• Which carburetors is this for? 50mm PMO carburetors. For 40mm order PM-O850-0; for 46mm order PM-O852-0.
• Do I need this if my carbs are new? Often yes — shipped jetting is a baseline, not a tune for your specific engine and altitude.
• What's the part number? PM-O854-0.
• Are you an authorized dealer? Yes — Washburn's Metal is an authorized PMO dealer.
• How does it ship? Standard ground or air; no hazmat restrictions.

⚠️ WARNING: This product can expose you to chemicals 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.