Vintage Uni-Syn Model A Carb Sync Tool 1959–62 w/ Box – Porsche Weber SU Corvair

**Vintage 1959–62 Uni-Syn Model A Carburetor Synchronizer w/ Box & Instructions – PAT 2,858,697** 📄 **Item Description** **Vintage Uni-Syn Model A Carburetor Synchronizer (c. 1959–1962)** **This is an early first-generation Model A Uni-Syn, produced shortly after the U.S. patent was granted in 1958. It features the original PAT 2,858,697 casting along with “FOREIGN PAT. PEND.” — markings used only on the earliest production run from 1959–1962.** **This tool was widely used in the 1950s–1970s for balancing multiple carburetors on classic imports and sports cars, including Porsche 356/912, Corvair, VW dual carb setups, MG, Triumph, Jaguar, Weber DCOE/IDF, and SU carburetors.** **This listing includes the original synchronizer, original early-style yellow box, and original instruction sheets, including tuning notes for Porsche and Corvair engines.** ⭐ **Condition** **Tool:** **• Good vintage condition and functions normally.** **• Thin float tube is present and intact.** **• Spring and screw linkage move freely.** **• Stamped: UNI-SYN, MOD–A, PAT 2,858,697, and FOREIGN PAT. PEND.** **• No cracks or repairs.** **Instructions:** **• Original paperwork included.** **• Some age toning, light stains, and creasing from age and use.** **• Fully readable.** **Box:** **• Rare early yellow/black box from the first production era.** **• Heavy edge wear and water staining.** **• Still structurally sound and displays original Uni-Syn graphics (“Accurately Balances Multiple Carbs”).** **• Adds authenticity despite cosmetic wear.** **Please review all photos and zoom in for exact condition.** 📌 **What’s Included** **• Uni-Syn Model A carb synchronizer (1959–62 version)** **• Original yellow/black early box** **• Original instruction sheets (with Porsche & Corvair tuning notes)** ✔️ **Terms** **Sold as-is due to vintage age. No returns unless misrepresented.**

• Brand: Uni-Syn
• Type: Model A carb synchronizer
• Manufacturer Part Number: PAT 2,858,697